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CONTENTSSECTION 1 . . . . SUMMARYSECTION 2 . . . . CABINET & MAIN CHASSISSECTION 3 . . . . ELECTRICALSECTION 4 . . . . MECHANISM OF VCR PARTSECTION 5 . . . . REPLACEMENT PARTS LIST
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SECTION 1SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ............. 1-3SERVICING PRECAUTIONS .................................................................................................. 1-4
General Servicing Precautions Insulation Checking Prodedure Electrostatically Sensitive Devices
SERVICE INFORMATION FOR EEPROM IC SETTING(VCR)...................................... 1-5SERVICE INFORMATION FOR EEPROM (DVD).............................................................. 1-6SPECIFICATIONS ........................................................................................................................1-7
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1-3
CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY,NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC-TURERS APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLYVOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANYRESULTING PROPERTY DAMAGE OR USER INJURY.SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARETHOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETYCHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE,INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THEUSER.WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTEC-TION FROM A.C. LINE SHOCK.SAFETY CHECKSAFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED. ACHECK SHOULD BE MADE OF THE FOLLOWING.SUBJECT : FIRE & SHOCK HAZARD1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY
AS TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS.THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARETRANSPORTED TO AND FROM THE REPAIR SHOP.
2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICESSUCH AS INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVEBEEN REINSTALLED PER ORIGINAL DESIGN. BE SURE THAT THESAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEENDEFEATED.
3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLDSOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER POINTS.BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.
4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATIONTO PARTS AND COMPONENTS. FOR FRAYED LEADS, DAMAGEDINSULATION (INCLUDING A.C. CORD). AND REPLACE IF NECESSARYFOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS.
5. NO LEAD OR COMPONENT SHOULD TOUCH A RECIVING TUBE ORA RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUNDPROTRUNING METAL SURFACES MUST BE AVOIDED.
6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOFRESISTORS, CAPACITORS, ETC. MUST BE REPLACED WITH EXACTFACTORY TYPES, DO NOT USE REPLACEMENT COMPONENTSOTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIR-CUIT MODIFICATIONS.
7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN A.C.LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABI-NET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HAN-DLE AND SCREWS) TO BE SURE THE SET IS SAFE TO OPERATEWITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C. VOLT-METER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, INTHE FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESIS-TOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITORBETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CON-DUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME.MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUGAND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED 75VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANYVALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCKHAZARD AND MUST BE CORRECTED IMMEDIATELY.
SUBJECT: GRAPHIC SYMBOLSTHE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHINAN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THESERVICE PERSONNEL TO THE PRESENCE OF UNINSULATEDDANGEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAG-NITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIAN-GLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TOTHE PRESENCE OF IMPORTANT SAFETY INFORMATION INSERVICE LITERATURE.
SUBJECT : X-RADIATION1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER-
SONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTEN-TIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PIC-TURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHENTHE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERA-TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC-TURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIR-CUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIR-ABLE LEVELS.
2. ONLY FACTORY SPECIFIED C.R.T. ANODE CONNECTORS MUST BEUSED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD INCOLOR SETS, ALWAYS RE-INSTALL THEM.
3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE ANACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF THE METER SHOULD BE CHECKED PERIODICALLYAGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLEAT YOUR DISTRIBUTOR.
4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLYTHERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERYTIME A COLOR CHASSIS IS SERVICED. THE BRIGHTNESS SHOULDBE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGEWITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOESNOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATINGCORRECTLY, WE SUGGEST THAT YOU AND YOUR SERVICE ORGA-NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGU-LATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCE-DURE. AND THAT THE HIGH VOLTAGE READING BE RECORDER ONEACH CUSTOMERS INVOICE.
5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS INA PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE,AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE ANDTHE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCTLONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCESSIVE VOLTAGE.
6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS(WHERE USED).
SUBJECT: IMPLOSION1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE
GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BETAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOIDSCRATCHING THE TUBE. IF SCRATCHED REPLACE IT.
2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.SUBJECT : TIPS ON PROPER INSTALLATION1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBY-
HOLE OR CLOSELY FITTING SHELF SPACE. OVER OR CLOSE TOHEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW.
2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIOINSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIA-TORS WHERE STEAM LEAKAGE IS A FACTOR, ETC.
3. AVOID PALCEMENT WHERE DRAPERIES MAY OBSTRUCT REARVENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC-ORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHTOBSTRUCT VENTILATION.
4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER-CIAL MOUNTING KIT. MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUNTED TO A SHELF ORPLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENTTHICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERSMUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGETEST ON CUSTOMIZED INSTALLATIONS.
5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ONSLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT ISPROPERLY SECURED.
6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITSMOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZ-ARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSSTHRESHOLDS OR DEEP PILE CARPETS.
7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STANDWHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OFTHE SAME OR LARGER SCREEN SIZE.
8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SIN-GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TOHOME AND FAMILY.
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
A.C. VOLTMETER
GOOD EARTH GROUNDSUCH AS THE WATERPIPE. CONDUIT. ETC
PLACE THIS PROBEON EACH EXPOSEDMETAL PART
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1-4
SERVICING PRECAUTIONSCAUTION : Before servicing the VCR+DVD covered by thisservice data and its supplements and addends, read and fol-low the SAFETY PRECAUTIONS. NOTE : if unforeseen cir-cumstances create conflict between the following servicingprecautions and any of the safety precautions in this publi-cations, always follow the safety precautions.Remembers Safety First:
General Servicing Precautions1. Always unplug the VCR+DVD AC power cord from the AC
power source before:(1) Removing or reinstalling any component, circuit board,
module, or any other assembly.(2) Disconnection or reconnecting any internal electrical
plug or other electrical connection.(3) Connecting a test substitute in parallel with an elec-
trolytic capacitor.Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may resultin an explosion hazard.
2. Do not spray chemicals on or near this VCR+DVD or anyof its assemblies.
3. Unless specified otherwise in this service data, cleanelectrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner,cotton-tipped swab, or comparable soft applicator.Unless specified otherwise in this service data, lubricationof contacts is not required.
4. Do not defeat any plug/socket B+ voltage interlocks withwhitch instruments covered by this service manual mightbe equipped.
5. Do not apply AC power to this VCR+DVD and/or any of itselectrical assemblies unless all solid-state device heatsinks are cerrectly installed.
6. Always connect test instrument ground lead to theappropriate ground before connection the test instrumentpositive lead. Always remove the test instrument ground lead last.
Insulation Checking ProcedureDisconnect the attachment plug from the AC outlet and turnthe power on. Connect an insulation resistance meter(500V)to the blades of the attachment plug. The insulation resis-tance between each blade of the attachment plug and acces-sible conductive parts (Note 1) should be more than 1M-ohm.Note 1 : Accessible Conductive Parts including Metal pan-els, Input terminals, Earphone jacks, etc.
Electrostatically Sensitive (ES) DevicesSome semiconductor (solid state) devices can be damagedeasily by static electricity. Such components commonly arecalled Electrostatically Sensitive (ES) Devices. Examples oftypical ES devices are integrated circuits and some fieldeffect transistors and semiconductor chip components.The following techniques should be used to help reduce theincidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor compo-nent or semiconductor-equipped assembly, drain off anyelectrostatic charge on your body by touching a knownearth ground. Alternatively, obtain and wear a commer-cially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grouned-tip soldering iron to solder or unsolderES devices.
4. Use only an anti-static solder removal device. Somesolder removal devices not classified a anti-static cangenerate electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These cangenerate electrical charge sufficient to damage ESdevices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready toinstall it. (Most replacement ES devices are packaged withleads electrically shorted together by conductive foam,aluminum foil, or comparable conductive material).
7. Immediately before removing the protective material fromthe leads of a replacement ES device, touch the protectivematerial to the chassis or circuit assembly into which thedevice will be installed.
Caution : Be sure no power is applied to the chassis orcircuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Normally harmless motion such as the brushing together of your clothes fabric or the liftingof your foot from a carpeted floor can generate static elec-tricity sufficient to damage an ES device.)
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1-7
SPECIFICATIONS GENERAL
Power requirements AC 200-240V, 50/60 HzPower consumption 17W Dimensions (approx.) 430 x 78.5 x 265 mm (W x H x D)Mass (approx.) 4.2 kgOperating temperature 5C to 35C (41F to 95F)Operating humidity 5 % to 90 %Timer 24 hours display typeRF Modulator UHF 22 - 68 (Adjustable)
SYSTEM
Laser Semiconductor laser, wavelength 650 nmVideo Head system Double azimuth 6 heads, helical scanning.Signal system PALFrequency response DVD (PCM 96 kHz): 8 Hz to 44 kHz
DVD (PCM 48 kHz): 8 Hz to 22 kHzCD: 8 Hz to 20 kHz
Signal-to-noise ratio More than 100dB (ANALOG OUT connectors only)Harmonic distortion Less than 0.008%Dynamic range More than 100 dB (DVD)
More than 95 dB (CD)
INPUTS (VCR)Audio -6.0dBm, more than 10 kohms (SCART)
-6.0dBm, more than 47 kohms (RCA)Video 1.0 Vp-p, 75 ohms, unbalanced (SCART/RCA)
OUTPUTS (DVD)VIDEO OUT 1 Vp-p 75 ohms, sync negativeCOMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 , negative sync, RCA jack x 1(Progressive Scan) (Pb)/(Pr) 0.7 V (p-p), 75 , RCA jack x 2RGB output 0.7 Vp-p, 75 ohmsAudio output (coaxial audio) 0.5 V (p-p), 75 , RCA jack x 1Audio output (analog audio) 2.0 Vrms (1 KHz, 0 dB), 600 ,
RCA jack (L, R)x2/SCART (TO TV)
OUTPUTS (VCR)Audio -6.0dBm, less than 1 kohms (SCART)Video 1.0Vp-p, 75 ohms, unbalanced (SCART)RGB output 0.7 Vp-p, 75 ohms
*Design and specifications are subject to change without notice.
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2-1
SECTION 2CABINET & MAIN CHASSIS
CONTENTS
EXPLODED VIEWS .....................................................................................................................2-21. Cabinet and Main Frame Section ...........................................................................................2-22. Deck Mechanism Section [ DVD MD (DP-10C) ] ...................................................................2-33. DECK Mechanism Section [ VCR DECK D37(N) ].................................................................2-3
1) Front Loading Mechanism Section ..................................................................................2-32) Moving Mechanism Section (1)..........................................................................................2-43) Moving Mechanism Section (2)..........................................................................................2-5
4. Packing Accessory Section....................................................................................................2-6
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2-2
EXPLODED VIEWS1. CABINET AND MAIN FRAME SECTION
280 A
43
A44
A26
A00
A46
A47
A50
285
284
271
265
463
330
261
261
260
452
452
452
261
465
272
273
463
463
463
463
469
274
3002
50
471
469
469
288
323
324
322
470
457
286
NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.
A
5
4
3
2
1
B C D
283
CN
501
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2-3
2. DECK MECHANISM SECTION [ DVD MD (DP-10C) ]
015A
012A
012A
015B
A26
A02439
018
013
017
014
001
002
003
A01
020
435
015
019
012
432
030
024
025
036
A03
430
021
439431
435
010
012
026
440
016
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2-4
3. DECK MECHANISM SECTION [ VCR DECK D37(N) ]1) FRONT LOADING MECHANISM SECTION
054A
100
A21
106
107
102
105
103
110
112
113
114
A23
109
032
A24
115
116
A22
054
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2-5
3. DECK MECHANISM SECTION [ VCR DECK D37(N) ]2) MOVING MECHANISM SECTION (1)
A01
008
006
004
013
409
016
003
022
012
011
017
031
079
032
024
406
405
028
021
031
007
A03
014
015
026 0
27
009
029
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2-6
3. DECK MECHANISM SECTION [ VCR DECK D37(N) ]3) MOVING MECHANISM SECTION (2)
052A
051
052 5
17
064
067
A11
066
068
A12
069 07
0
023
078
032
076
077
058
080
410
055
518 06
0
065
061
056
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2-7
4. PACKING ACCESSORY SECTION
BATTERY808
BAG804
PACKING, CASING803
806
INSTRUCTION ASSEMBLY
RF CABLE810 CABLE ASS'Y RF
801
REMOTE CONTROLLERASSEMBLY900
BOX802
PACKING, CASING803
811
812
PLUG ASS'Y 1WAY
PLUG ASS'Y 2WAY
OPTIONAL PARTS
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3-13-1
SECTION 3ELECTRICAL
CONTENTSVCR PART
ELECTRICAL ADJUSTMENTPROCEDURES..................................................3-2ELECTRICALTROUBLESHOOTING GUIDE......................3-3
1. POWER(SMPS) CIRCUIT .............................3-62. SYSTEM/KEY CIRCUIT ................................3-73. SERVO CIRCUIT ...........................................3-84. Y/C CIRCUIT................................................3-105. HI-FI CIRCUIT..............................................3-146 TUNER/IF CIRCUIT ......................................3-17
BLOCK DIAGRAMS......................................3-191. POWER (SMPS) BLOCK DIAGRAM..........3-192. TU/IF, NICAM & A2 BLOCK DIAGRAM .....3-213. VPS BLOCK DIAGRAM..............................3-224. Y/C BLOCK DIAGRAM ...............................3-235. Hi-Fi BLOCK DIAGRAM .............................3-256. SYSTEM BLOCK DIAGRAM ......................3-27
CIRCUIT DIAGRAMS....................................3-291. POWER (SMPS) CIRCUIT DIAGRAM ........3-292. TU/IF CIRCUIT DIAGRAM ..........................3-313. A/V CIRCUIT DIAGRAM .............................3-334. Hi-Fi CIRCUIT DIAGRAM ...........................3-355. SCART(JACK) CIRCUIT DIAGRAM...........3-376. SYSTEM CIRCUIT DIAGRAM.....................3-39 WAVEFORMS................................................3-41 CIRCUIT VOLTAGE CHART.........................3-43
PRINTED CIRCUIT DIAGRAMS ...............3-491. MAIN P.C.BOARD (TOP SIDE) ...................3-492. MAIN P.C.BOARD (BOTTOM SIDE)...........3-513. POWER P.C.BOARD...................................3-534. KEY P.C.BOARD .........................................3-53
DVD PART
ELECTRICAL TROUBLESHOOTING GUIDE.................................................................3-55
1. POWER OPERATION FLOW......................3-552. SYSTEM TEST FLOW.................................3-563. TEST & DEBUG FLOW...............................3-57
DETAILS AND WAVEFORMS ON SYSTEMTEST AND DEBUGGING.............................3-63
1. SYSTEM 27MHZ CLOCK, RESET, FLASH R/W SIGNAL...................................3-63
2. SDRAM CLOCK ..........................................3-643. TRAY OPEN/CLOSE SIGNAL.....................3-644. SLED CONTROL RELATED SIGNAL
(NO DISC CONDITION)...............................3-665. LENS CONTROL RELATED SIGNAL
(NO DISC CONDITION)...............................3-666. LASER POWER CONTROL RELATED
SIGNAL(NO DISC CONDITION) .................3-677. DISC TYPE JUDGEMENT WAVEFORM ....3-678. FOCUS ON WAVEFORM ............................3-699. SPINDLE CONTROL WAVEFORM
(NO DISC CONDITION)...............................3-7010. TRACKING CONTROL RELATED
SIGNAL(SYSTEM CHECKING) ................3-7111. ZR36868 AUDIO OPTICAL AND COAXIAL
OUTPUT(SPDIF)........................................3-7212. ZR36868 VIDEO OUTPUT WAVEFORM ..3-7213. ZR36868 AUDIO OUTPUT TO
AUDIO DAC...............................................3-7314. AUDIO OUTPUT FROM AUDIO DAC.......3-74
BLOCK DIAGRAMS ......................................3-761. SYSTEM BLOCK DIAGRAM ......................3-76 2. SERVO BLOCK DIAGRAM.........................3-77 3. AUDIO & VIDEO IN/OUT
BLOCK DIAGRAM ......................................3-78
CIRCUIT DIAGRAMS ....................................3-791. SYSTEM CIRCUIT DIAGRAM.....................3-792. SERVO CIRCUIT DIAGRAM.......................3-813. AV/JACK CIRCUIT DIAGRAM....................3-83
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3-2
ELECTRICAL ADJUSTMENT PROCEDURES1. Servo Adjustment
1) PG Adjustment Test Equipment
Adjustment And Specification
a) OSCILLOSCOPEb) NTSC MODEL : NTSC SP TEST TAPE
C) PAL MODEL : PAL SP TEST TAPE
MODE
PLAY
Adjustment Procedurea) Insert the SP Test Tape and play.
Note - Adjust the distance of X, pressing the Tracking(+) or Tracking(-) when the ATR is blink after theSP Test Tape is inserted.
b) Connect the CH1 of the oscilloscope to the H/SW(TP) and CH2 to the Video Out for the VCR.c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(TP), and then check the distance (time
difference), which is from the selected A(B) Head point of the H/SW(TP) signal to the starting point ofthe vertical synchronized signal, to 6.5H 0.5H (412s, 1H=63s).
PG Adjustment Methoda-1) Payback the SP standard tapeb-2) Press the OK key on the Remote controller and the PLAY key on the Front Panel the same time
for more than 5seconds, then it goes in to Tracking initial mode. c-3) Repeat the above step(No.b-2), then it finishes the PG adjusting automatically.d-4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data. CONNECTION
WAVEFORM
V.OutH/SW(TP) R/C TRK JIG KEY 6.5 0.5H
MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION
V.Out
H/SW(TP)
OSCILLOSCOPE
CH1 CH2
V.out
R/C KEY
H/SW(TP)
H/SW
CompositeVIDEO
6.5H(416us)
VCR PART
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3-3
ELECTRICAL TROUBLESHOOTING GUIDE
NO Check or Replacethe D102
Replace the D123
Replace the D124
Replace the D121
YES
YES
Is the D121Normal?
Power Line of MainPCB is short
1. Power(SMPS) CIRCUIT
No 5.3VA
Replace the FR101(Use the same ICW)
Is the FR101Normal?
Is the R101Normal?
Is the BD101Normal?
NO
NO
NO
NO
NO
NO
NO
NO
NO
Replace theBD101
Replace the R101
Is the D102 normal?
Replace the D125
Replace the IC103
YES
YES
YES
YES
YES
YES
YES
Is Vcc (9V - 18V) sup-plied to IC101 Pin2?
Are the D125 normal?
Is there about 2.5Vat the IC103 Pin1?
Is the D123 normal?
Is the D124Normal?
(1) No 5.3VA
-
3-4
No 33V
Is the Vcc(33V) sup-plied to Q161 Emittor?
Check or Replacethe D121
Is the Q162 BaseH?
Check the PWR CTLH signal from -com
Check or Replacethe Q161
YES
YES
YES
(5) No 33V
No 5.0V_D
Check or Replacethe D125
Is the Vcc(5.3V) sup-plied to Q165 Emittor?
Check or Replacethe Q165
Is the Q162 BaseH?
NO
NO Check the PWR CTLH signal from -com
YES
YES
YES
(2) No 5.0V_D
No 5.0V_T
Check or Replacethe D125
Check the PWR CTLH signal from -com
Is the Vcc(5.3V) sup-plied to Q163 Emittor?
Is the Q162 BaseH?
Check or Replacethe Q163
NO
NO
YES
YES
YES
(3) No 5.0V_T
No 3.8V
Check or Replacethe D123
Is the D123 normal?
Power line of MainPCB is short
NO NO
NO
YES
YES
(4) No 3.8V
-
3-5
No Motor_Vcc
Check or Replacethe D124
Is the Vcc(14V)supplied to C134?
Check or Replacethe Cap / Drum
NO
YES
YES
(6) No Motor_Vcc (To Cap, Drum Motor )
No REG 12V
Is the Vcc(14V) suppliedto Q165 Collector?
YES
Is the Vcc(14V) sup-plied to Q165 Base?
YES
Check or Replacethe Q165
YES
(7) No REG 12V
Check or Replacethe D124
NO
NO Check the PWR CTLH signal from -com
-
3-6
2. SYSTEM/KEY CIRCUIT(1) AUTO STOP
(2) The unstable loading of a Cassette tape
Auto Stop
Does the SW25 waveformappear at the IC501Pin23?
Do the T-UP Reel Pulsesappear at the IC501 Pin3?
Is 12V applied to thePMC01 Pin8?
Check the Drum Motorsignal.
Does 5.0V appear at theRS501?
Check the Power Circuit.
Check the Power.
Is 5.0V applied to theR544 ?
Refer to SMPS 5.3VAtroubleshooting.
Check the IC501Pins 86, 87, 88, 89.
Do T/UP Reel Pulsesappear at the Q514 Baseterminal?
Replace the T/UP Reel Sensor (RS501).
Check the CST SW andthe peripheral circuitry.
Replace the IC501.
The unstable loading of aCassette tape
Does the H signal appearat the IC501 Pin32 duringinserting the CST ?
Does the L signal appearat the IC501 Pin19 duringinserting the CST?
Check the DeckMechanism.
Caution : Auto stop can occur because Grease or Oil is dried up
YES
YES
YES NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO NO
YES
YES YES
-
3-7
3. SERVO CIRCUIT(1) Unstable Video in PB MODE
Unstable Video inPB Mode.
Does the Noise level of thescreen changeperiodically?
Replace the IC501.
Refer to When the Y signaldoesnt appear on thescreen in PB Mode.
Does the CFG waveformappear at the IC501Pin67?
On tracking do the CTLpulses move?
Does the Video Envelopewaveform appear at theIC501 Pin82?
Replace the IC501.
YES
YES
YES
YES
YES
NO
NO
(2) When the Drum Motor(2) doesnt run. Do the DFG Pulses appear
at the PMC01 Pin11?
Replace the Cap M.
Arent the foil patterns andthe Components betweenIC501 Pin 104 and PMC01Pin11 short?
Replace the IC501.
Refer to (2)No 12VA of Power section
Do the Drum PWM Pulsesappear at the IC501Pin34?
Arent the foil patterns andthe Components betweenIC501 Pin34 and PMC01Pin12 short?
Do the DFG Pulses appearat the IC501 Pin104?
Do the Drum PWM Pulsesappear at the IC501Pin34?
Arent the connecting patterns and the Componentsbetween IC501 Pin34 and PMC01 Pin12 short?
When the Drum Motordoesnt run,
Does 12V appear at thePMC01 Pin8?
Does 2.8V appear at thePMC01 Pin12?
Check the connector(PMC01) and the Drum Motor Assy.
NOYES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES
-
3-8
Does the CFG signal appear at thePMC01 Pin1?
Does the PWM signal appear at theIC501 Pin33?
Does 2.8V appear at the PMC01?
Check the PMC01 and the CapstanMotor Assy.
Does the Capstan PWM signal appear atthe IC501 Pin33?
Arent the foil patterns and Componentsbetween IC501 Pin33 and PMC01Pin9 short?
Does the CFG signal come into theIC501 Pin67?
Arent the foil patterns and Componentsbetween IC501 Pin33 and PMC01Pin9 short?
2. SERVO CIRCUIT(3) When the Capstan Motor doesnt run,
NO
NO
NO
YES
YES
YES
When the Capstan Motor doesnt run,
Does 12VA appear at the PMC01?
YES
Replace the IC501.
YES
NO
NO
YES
Refer to SMPS(CAPSTAN/12Volt)Trouble Shooting.
Arent the foil patterns and componentbetween IC501 Pin67 and PMC01Pin1 short?
Check the Capstan Motor Assy.
NO
-
3-9
KEY doesnt working.
Is 5V applied to the IC501Pin36?
Does LED or FLD changewhen a function button ispressed?
Refer to SMPS 5.3VATrouble Shooting.
Replace the defective switches.
YES
NO
NO
2. SERVO CIRCUIT(4) KEY doesnt working
-
3-10
4. Y/C CIRCUIT(1) No Video in EE Mode,
No Video in EE Mode
Check the 19Pin of Tuner.Does the Video signalappear at the IC301 Pin48?
Is 5V applied to the IC301Pins18, 24, 42, 55, 72, 91?
Does the Video signalappear at the IC301 Pin65?
Does the Video signalappear at the IC501 Pin47?
Does the Video signal appearat the Emitter terminal of theQ309?
Check the 5.0VT, 5.3VALine. (Power Circuit)
Is I2C BUS signal applied tothe IC301 Pins68, 69?
Check C316. (AGC)Chck the path of the signalbetween the IC301 Pin65and IC501 Pin49.
Replace the IC301.Does the 12VT, 5.3VAappear at the Emitter terminal of the Q309.
Replace the Q309. Check the 12VT, 5.4VALine. (Power Circuit)
Check the System Circuit.(Refer to SYSTEM I2C BUSCHECK Trouble Shooting)
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
-
3-11
3. Y/C CIRCUIT(2) When the Y(Luminance) signal doesnt appear on the screen in PB Mode,
Is 5.0VT, 5.3VA applied to theIC301 Pins24, 42, 55, 72, 91?
Is the I2C Bus siganl applied to the IC301 Pins68, 69 ?
Does the normal RF signalappear at the IC301 Pin78?
Check the line of the 5.0VT,5.3VA Line. (Power Circuit)
Check the System Circuit.(IC501 Pin23)
Check the V.H.S/W level.(Check R303, R304)
Replace the IC301.
Refer to SYSTEM I2C BUSCHECK Trouble Shooting.
Is the V.H.S/W signalapplied to the IC301 Pin70?
Is V.H.S/W H about 3.4Vat the IC301 Pin70?
Clean the Drum.
Check the path of theY(Luminance) RF signal.(Check C327)
Check the path of the Y(Luminance) RF signal.(Check the C312)
Does the Y(Luminance) RFsignal appear at the IC301Pin79?
Is the Y(Luminance) Videowaveform showed up attheIC301 Pin43?
Replace the IC301.
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YESYES
YES
YES
-
3-12
3. Y/C CIRCUIT(3) When the C(Color) signal doesnt appear on the screen in PB Mode,
Is 5.0VT/5.3VA applied to theIC301 Pins24, 42, 55, 72, 91.
Is the Color Rotary signal applied to the IC301Pin70?
Check the line of the 5.0VT/5.3VA Line. (Power Circuit)
Replace the X301.
Check the Color Pass.
Check the Color RotaryCircuit. (IC501 Pin98 )
Check the Color Rotarylevel. (Check the R303)
Does the X301(4.43MHZ)oscillate?
Replace the IC301.
Does the Color signalappear at the IC301 Pin21?
Is Color Rotary Habout 3.4V?
Replace the IC301.
NO
NO
NO
YES
YES
YES
YES
NO NO
NO
YES
Does the Color signalappear at the IC301Pin25 ?
-
3-13
3. Y/C CIRCUIT(4) When the Video signal doesnt appear on the screen in REC Mode,
Is the EE signal normal?
Is 5.0VT/5.3VA applied to theIC301 Pins24,42,55,72,91?
Does the RF signal appearat the IC301 Pin78?
Check EE Mode.
Check the System of RECH. (the IC501 Pin27 / the D301)
Replace the IC301.
Check the line of the 5.0VT/5.3VA Line.(Power Circuit)
Check PB Mode.
Is the REC H signal(about 4V) applied to theIC301 Pin80?
Check the circuit of the IC301 Pins85, 86.
Check REC LuminancePass & Color Pass.
Does PB Mdoe operatenormally?
Does the REC RF signalappear at the IC301Pins88,89,94,95?
Check the Drum &Drum Connector
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
-
3-14
5. Hi-Fi CIRCUIT(A) No Sound(EE Mode)
YES
No Sound.
Check the TU Audio of IC801Pins2, 3.
Check the DVD Audio of IC801Pins4, 5.
Check the AV1 Audio of IC801Pins6, 7.
Check the AV2 Audio of IC801Pins8, 9.
Check the AV3 Audio of IC801Pins10, 11.
Check the Vcc of IC801 Pins34, 40,IC802 Pin13.
YES
Check the IIC Clock and DATA atIC801 Pins42, 43.
YES
Check the Audio of IC801 Pins16, 17.
YES
Check the Audio of IC802 Pins1, 14.
YES
Check the JK902, SC901.
Check the IC751 Pins30, 31.NO
Check the DVD Audio OUT.(JK902 DVD_A_L_L/R).
NO
Check the Scart1 Jack.(SC901 Scart1 Audio in Pins2, 6).
NO
NO
Check the front Jack.
Check the Scart2 Jack.(SC901 Scart2 Audio in Pins2, 6).
NO
Check the Power 5.0V, 12VT.YESNO
Check the IC501 Pins17, 18.NO
Replace IC801.
Replace IC802.
NO
NO
-
3-15
3. Y/C CIRCUIT(B) Hi-Fi Playback
YES
YES
YES
YES
PB mode
No Sound.
Check the Vcc of IC801(Pins34, 40)
Check the Hi-Fi Selection switch.(IC801 Pin41) and the Tape quality.
Is the RF Envelope atIC801 Pin44 over 2Vp-p?
YES
Check IC801 Pin42(Data),Pin43(Clock)
YES
Do Audio Signals appear atIC801 Pin16(L-CH), 17(R-CH)?
YES
Do Audio Signals appear atIC802 Pin10(L-CH), 16(R-CH)?
YES
YES YES
Do Audio Signals appear atIC802 Pins11, 16?
Do Audio Signals appear atJK902?
Check Power 5.0V, 12VT.NO
Check IC501 Pin26(A.H/SW)
NO
NO
Check the parts of -COM(IC501 Pins17, 18)
NO
Check the Connection atP3D01 Pins7, 9.
NO
Check the A.IN line ofIC802(C850, C852)
NO
Check the Vcc of IC802Pin13.
Replace IC802.
Check the Jack(JK902)
NO
NO
Check Power.NO
-
3-16
(C)
Hi-Fi REC.
It cant be recorded Hi-Fi Audiosignal.
Check Vcc of IC801.(Pins34, 40)
YES
YES
Check IC801 Pin42(Data), Pin43(CLOCK).
YES
Do Audio signals appear at IC801Pins16, 17?
YES
Do FM Audio signals appear at IC801Pin36?
YES
Check the Contact Point of DrumConnector if good then Replace the Drum.
YES
Check Power 5V, 12V.NO
Check ports of -COM.(IC501 pins 17, 18)
Check Audio input signal of IC801Pins2, 3(TU.A.), 4, 5(DVD.A.),6, 7(AVI.A.), 8, 9(AV2.A.), 10, 11(AV3.A.).
NO
Replace IC801.NO
NO
-
3-17
6. Tuner/IF CIRCUIT(A) No Picture on the TV screen
No picture on the TVscreen
Does the Video signal atthe TU701 Pin19.
YES
YES YES
Is 33VT applied to TU701Pin17?
YES
Is 5VT applied to TU701Pin4?
NO
Does Sync appear atIC501 Pin111.
NO
Does the Video signal atthe IC501 Pin47.
YES
NO
Does the Video signal atthe IC301 Pin61.
YES
NO
NODoes the Video signal atthe IC903 Pin6.
Check the signal flow from IC903Pins26, 27 to SC901 Pin19.
YES
YES
Check 33V line.NO
Check 5V line.NO
YES
Does the Clock signalappear at TU701 Pin12?
Check the lIC Clock Signalof -COM Pin18.
NO
YES
Does the data signalappear at TU701 Pin13?
Replace Tuner.
Check the signal flow fromTU701 Pin19 to IC301 Pin48.
Check the signal from IC301Pin65 to IC501 Pin49.
Check the signal from IC501Pin47 to IC301 Pin56.
Check the signal from IC903Pin6 to IC301 Pin61.
Check the lIC Data Signalof -COM Pin17.
NO
-
3-18
(B) No Sound
No Sound.
Check the Vcc of IC751 Pins1, 11, 19,22, 33.
YES
Check 5.0V Line.NO
Check the Tuner SiF signal at IC751Pin2.
YES
Check the oscillator of IC751 Pins5, 6.
YES
Check the Audio of IC751 Pins30, 31.
YES
Check the Audio of IC801 Pins2, 3.
YES
Check the Audio of IC801 Pins16, 17.
YES
Check the Audio of IC802 Pins3, 5.
YES
Check the Signal flow from IC802Pins3, 5, SC901 Pins1, 3.
YES
Check the Tuner SIF of TU701 Pin22.NO
Replace X751NO
Check the IIC Clock and Data at IC751Pins12, 13.
NO
Check the signal flow from IC751Pins30, 31 to IC801 Pins2, 3.
NO
Check the IIC Clock and Data at IC801Pins42, 43.
NO
Check the signal flow from IC801Pins16, 17 to IC802 Pins11, 16.
NO
-
3-19 3-20
BLOCK DIAGRAMS1. POWER(SMPS) BLOCK DIAGRAM
BD101
T101TRANS
+
BR BL(BK)(WH)
C103
!
!
!
!!
FUSERESISTOR
(FR101)
NOISE FILTERBLOCK
(C101,L102,C102)
PHOTO COUPLER(IC102)
ERRORAMP
(IC103)
SNUBBERBLOCK
(D101,C105C106,R104)
DRIVE & S/W BLOCK(IC101, D102, R105, C104, C108 , C109,
C107,ZD102)
Y-CAPC111
Y-CAPC110
FEED-BACKBLOCK
(R141,R142,C143,R143.R144.R145
R146)
RECTIFIER &SMOOTING BLOCK(D124,C124,C134,R133,L124,C126)
RECTIFIER &SMOOTING BLOCK(D123,C127,C137,
L127)
RECTIFIER &SMOOTING BLOCK(D121,C126,R136)
RECTIFIER &SMOOTING BLOCK(D122,D125,C128,
L128,C138)
MOTOR VCC14VA
REG12V
8V
3.8V
5.3VA
M5V/5VT
33V
12V REG BLOCK(Q166,ZD151,C160,
R166,C159)
8V REG BLOCK(D126,IC141,R167,
C165)
5VT S/W BLOCK(Q163,C162,D127,
R156,R157)
33V S/W BLOCK(Q161,R154,R155Q173,R174,R177)
5V S/W BLOCK(Q165,C164,R172,
R174)
PWR CTLH
5.0V
9V REG BLOCK(Q164,ZD152,C161,
R168,C166)REG9V
PWR CTL BLOCK(Q162,C161,R164,
R163)
NOTES) WarningNOTES) Parts that are shaded are criticalNOTES) With respect to risk of fire orNOTES) electricial shock.
-
3-21 3-22
3. VPS BLOCK DIAGRAM
COMBI SCART
VPS_VIDEO
IIC C
LK
IIC D
ATA
2. Tu/IF, NICAM & A2 BLOCK DIAGRAM
MSP
3417
MSP
3407
SW1
SW2
AS A.O
UT
AFT
SIF
TU_A
_R
TU_A
_L
IIC DATA
IIC CLK
TU_SE_VL_H
TU_SECAM_H
33V
MOD_VIDEO
5V
MOD_AUDIO
5.4VA
5V AFT
TU_V
IDEO
-
3-23 3-24
4. Y/C BLOCK DIAGRAM
90 93 9684V.
ENV
87
70V.H.SW
C.ROTARYDATA
CLOCK
C.SYNC
V.OUT(MICOM)S2 V.OUT
S1 V.OUT
SYNC
IN
6968
67
C-De
lay
(1H/2H
)BP
FM
AIN
CONV
ACC
C LP
F
CCD
LPF
ACC
DET
CNC
2521
IC20
1LA
7010
0M
IC30
1LA
7175
0M
29
1814
PB F
M E
QFM
OEM
PB F
M
AGC
MAI
ND
E EM
P
Y-LP
F
YNR
SUB
LPF
60dB
AM
P
Y/C
MIX
6563
61
46 43Y-
Del
ay
7978
(PB Mode)
80
REC'H'
V.H.SW
C.ROTARY
DATA
CLOCK
C SYNC
V.OUTMICOM
V.IN4FRONTV.IN3DEC
7978
7675
7069
6867
6559
5854
52
50V.
IN2
S1
V.IN
1 TU
NER
48 46 43 33 32 31
CLK-
IN29
28
4.43
MH
z
2721
95948988
Kille
rC-
LPF
ACC
BPF
Mai
nCo
nvM
ain
Conv
DET
AIL
ENH
NL
EMPH
AW
/DCL
IP IC30
1LA
7175
0M
LP R
EC
SP R
EC
(To D
rum
)
(To D
rum
)
W/D
CLIP
REC
FM E
Q
Y-LP
FFB
C
AGC
SW
Y-D
ELAY
KILL
D
EC
REC
APC V
X02
VX02
COM
PAM
P
1H/2
HD
ELAY
YNR
2916
212
IC20
1 LA
7010
0M
COMBI SCART
(REC Mode)
-
3-25 3-26
5. Hi-Fi BLOCK DIAGRAM
IC802
A
BHi-Fi/REC
16 3
11
1
8 9
142 12
6
5IC801A.OUT
To JACK
DVD_FR_VIDEO
37
Hi-F
i PB
'B'
Hi-F
i PB
'A'
Hi-F
i REC1
2
34567
1011
21 22
36 35
16 A.OUT 'L'
A.OUT 'R'17
EU2.A.OUT.L19
EU2.A.OUT.R
DVD_H
20
89
AUDIO INPUTBLOCK
VIDEO INPUTBLOCK
AUDIO INPUT BLOCK
OSD
V. IN
DVD
/R V
. IN
RF_
H
DVD
A.IN
'L'
DVD
A.IN
'R'NORMAL AUDIO
OUT(To AVCP)
NORMAL AUDIOIN(From AVCP)
Tu A.IN 'L'
Tu A.IN 'R'DVD A.IN 'L'DVD A.IN 'R'EU1 A.IN 'L'EU1 A.IN 'R'EU2 A.IN 'L'EU2 A.IN 'R'AV2 A.IN 'L'AV2 A.IN 'R'
MODULATORA.OUT(To Tu)
COMBI SCART
SCART 2
7
-
3-27 3-28
6. SYSTEM BLOCK DIAGRAM
2fscL505, Q506, R537, 539, 584, 585, C553, 554
LD(+)LD(-)
L/M CONTROLR525, R526
COMBI SCART
R522, C568
MN101D10X
Q504, 505R506, 507, 508, 509, 511C504, 511
L503, C507, C509
L504, C505, C506
-
3-29 3-30
A B C D E F G H I J K L M N O P Q R S T
NOTES) Symbol denotes AC ground.NOTES) Symbol denotes DC chassis ground.
NOTE) WarningNOTE) Parts that are shaded are criticalNOTE) With respect to risk of fire orNOTE) electricial shock.
OPTIONAL PART
CIRCUIT DIAGRAMS1. POWER(SMPS) CIRCUIT DIAGRAM
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIR-CUMSTANCES SHOULD THE ORIGINAL DESIGN BEMODIFIED OR ALTERED WITHOUT PERMISSIONFROM THE LG ELECTRONICS CORPORATION. ALLCOMPONENTS SHOULD BE REPLACED ONLY WITHTYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR-
CUIT. SPECIAL COMPONENTS ARE SHADED ON THESCHEMATIC FOR EASY IDENTIFICATION.THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF-
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,IMPLEMENTATION OF THE LATEST SAFETY ANDPERFORMANCE IMPROVEMENT CHANGES INTOTHE SET IS NOT DELAYED UNTIL THE NEW SERVICELITERATURE IS PRINTED.
NOTE : 1. Shaded( ) parts are critical for safety. Replace only
with specified part number.2. Voltages are DC-measured with a digital voltmeter
during Play mode.
-
3-31 3-32
2. TU/IF CIRCUIT DIAGRAM
A B C D E F G H I J K L M N O P Q R S T
EE MODE(VIDEO)TU MODE (AUDIO)
-
3-33 3-34
3. A/V CIRCUIT DIAGRAM
1
4
5
2
7
8 1311 12
2
39
1014
6
2
A B C D E F G H I J K L M N O P Q R S T
PB SECAM COLOR
REC AUDIOPB Y+C
PB Y
PB C
REC Y+C
REC Y
REC CREC SECAM COLOR
PB AUDIO(MONO) WAVEFORM
Audio Tracking is failed.IC301 Pin 84 is defective.
EE, PB Screen doesnt appear.Q305 is defective.PB COLOR Signal disappear.
IC301 Pin70 is defective.
PB COLOR Signal disappear.X301 is defective.
D301or IC301 Pin 80REC is defective.
PB and Recording is failed.(IC301 doesnt operate.)
IC301 Pin 69, 68 are defective.
Normal Audio signal is not recorded.Q306 is defective.
No mono Audio Signalin PB MODE.
Q302, Q303, Q314are defective.
-
3-35 3-36
4. Hi-Fi CIRCUIT DIAGRAM
A B C D E F G H I J K L M N O P Q R S T
PBREC
44 Pin is defective.Hi-Fi Audio is not appear.
IC801 Pins42, 43 aredefective.All Audio is not appear.
-
3-37 3-38
5. SCART(JACK) CIRCUIT DIAGRAM
A B C D E F G H I J K L M N O P Q R S T
-
3-39 3-40
6. SYSTEM CIRCUIT DIAGRAM
1
3
4
8
5
6
72
WAVEFORM
A B C D E F G H I J K L M N O P Q R S T
Q501, Q503 are defective.-COM is unstable.
IC505 is defective.VCR will not operate.
Q506, Q507 are defective.LED will not operate.
X501 is defective.
CLOCK SETTING will not operate.
X502 is defective.-COM will not operate.
ES501, ES502, LD501 aredefective.
Auto Rew will not working.RS501,RS502 aredefective.
Auto stop occures.
R575, R576, R577,R578 are defective.
Deck will not operate.
-
3-41 3-42
WAVEFORMS
IC301 Pin 75PB mode500mvp-p
IC301 Pins 48, 50,54, 56Video in 1Vp-p
IC301 Pin 67PB/REC mode4.0Vp-p
IC301 Pin 100REC mode1.1Vp-p
IC301 Pin 3REC mode2.0Vp-p
IC301 Pin 65PB mode2.02Vp-p
IC301 Pin 43PB mode400mVp-p
IC301 Pin 28PB mode400mVp-p
IC301 Pin 68PB/REC mode5Vp-p
IC301 Pin 69PB/REC mode5Vp-p
IC301 Pins 21REC mode340mVp-p
IC301 Pins 25 PB mode300mVp-p
IC301 Pin 29PB mode400mVp-p
IC301 Pin 70PB mode3.6Vp-p
* IC301 Oscilloscope Waveform * IC501 Waveform Photographs
V.HSW(IC501 Pin 23)1V/10mSREC/PB MODE
DV.SYNC(IC501 PIN 24)1V/100uSQUE/REV MODE
CTL(+)(IC501 Pin 74)1V/10mS
CTL(-)(IC501 Pin 75)1V/10mS
DFG/DFG(IC501 PIN 65)1V/10mSREC/PB MODE
CFG(IC501 Pin 67)1V/10mS
V.IN(IC501 Pin 49)500mV/20uS
V.OUT(IC501 Pin 47)500mV/20uSEE/PB MODE
-
3-43 3-44
CIRCUIT VOLTAGE CHARTEE PBMODEPIN NO.
1 1.67 1.672 1.88 1.893 1.28 1.284 1.71 1.725 1.28 1.296 0.01 0.017 0.01 0.018 5.24 5.259 0.01 0.01
10 0.02 0.0211 2.62 2.6712 2.53 2.6113 2.72 2.7214 2.39 2.3815 2.6 2.616 2.59 2.5617 3.44 3.4418 1.58 1.5719 5.24 5.2420 1.1 1.121 5.24 5.2422 0.01 0.0123 1.7 2.0524 0.43 0.425 2.9 2.8626 1.7 1.727 1.7 1.728 3.26 3.26
1 5.04 5.012 0.21 0.093 2.38 2.374 0.11 0.835 2.37 2.366 2.37 2.377 2.36 2.368 2.36 2.369 2.35 2.35
10 2.38 2.3711 2.44 2.4912 0.01 0.0113 2.35 2.3414 0.36 0.0315 2.35 2.3416 5.07 0.2317 2.34 2.3518 5.07 5.0619 4.07 4.0820 0.01 0.0121 3.23 2.0222 2.62 4.4423 2.62 4.6624 5.06 5.0425 0.12 3.33
I C 2 0 1
I C 3 0 1
I C 4 0 2
I C 3 S 1
EE PBMODEPIN NO.26 0.92 1.0827 0.03 2.1528 3.98 3.9629 2.61 2.6130 0.01 0.0131 0.46 1.5532 4.74 4.9633 2.05 2.0934 0.05 0.0735 2.54 2.5436 2.72 2.7737 1.91 1.9138 1.99 2.0239 9.32 9.340 0.01 0.0141 0.01 0.0142 5.01 543 2.06 2.7144 0.04 4.1745 2.55 1.1646 2.42 3.2847 4.1 4.148 3.09 3.1249 2.91 2.8450 1.93 1.9351 0.01 0.0152 1.86 1.9453 1.33 2.3154 1.93 1.9855 5.18 5.1756 2.14 2.8657 1.44 1.0158 1.96 1.8559 2.9 2.9260 1.45 1.5761 1.57 2.6362 0.16 0.1663 1.57 2.7764 0.01 0.0165 0.83 2.5166 0.01 0.0167 4.4 0.0168 5.01 4.9969 5.01 5.0470 1.88 2.5771 0.01 0.0172 5.05 5.0373 2.18 1.0174 2.25 3.9575 2.19 0.7376 2.19 0.8477 1.66 0.5678 2.62 3.3279 2.12 1.9980 0.99 0.99
EE PBMODEPIN NO.81 1.13 1.1482 0.01 0.0183 5.04 0.5484 0.13 0.1185 0.01 0.0186 0.45 0.4487 1.92 0.7988 1.94 0.7989 1.94 0.7990 1.89 0.7991 5.06 5.0592 0.01 0.0193 1.91 1.9294 1.91 1.9295 1.86 1.9196 1.91 1.9197 0.01 0.0198 2.38 2.3799 2.38 2.37100 2.38 2.37
1 2.52 2.522 2.42 2.423 3.57 3.574 2.58 2.585 0.08 0.086 0.56 0.567 0.01 0.018 0.01 0.019 3.05 3.0510 2.52 2.5211 2.67 2.6712 3.23 3.2313 4.04 4.0414 2.51 2.5115 1.98 1.9816 3.22 3.2217 0.04 0.0418 0.13 0.1319 2.28 2.2820 2.59 2.5921 1.96 1.9622 0.08 0.0823 5.03 5.0324 5.03 5.0325 1.56 1.5626 1.56 1.5627 2.04 2.0428 0.19 0.1929 4.38 4.3830 2.09 2.09
1 5.89 5.892 3.08 3.23 3.08 3.19
I C 5 0 1
EE PBMODEPIN NO.4 0.01 0.015 3.08 3.226 3.08 3.227 5.9 5.98 11.79 11.79
1 1.44 1.892 0.02 4.473 4.22 2.054 4.75 4.745 4.77 4.756 0.11 0.117 0.02 0.028 5.12 5.119 4.92 4.9110 1.43 1.4511 3.38 3.3712 3.39 3.3913 2.57 2.614 5.13 5.1115 2.31 1.6716 0.03 0.0317 5.02 5.0518 5.02 4.9719 2.6 0.3120 0.06 3.5121 5.11 0.0222 2.41 1.723 2.59 2.5824 0.16 0.1625 5.16 5.1426 2.55 2.5627 4.92 0.0228 0.02 4.8829 0.02 0.0230 0.02 0.3531 0.08 0.0232 0.02 0.0133 2.64 2.6934 0.02 2.6535 5.17 0.0136 2.59 5.1537 2.38 2.5838 0.01 2.439 2.09 0.0240 2.55 2.1841 0.01 2.5742 0.02 0.0143 5.16 0.0144 5.16 5.1545 0.01 5.1546 1.63 0.0247 0.01 2.0648 1.02 0.0149 1.91 2.07
I C 5 0 3
I C 6 0 1
EE PBMODEPIN NO.50 4.96 2.6251 3.07 4.9752 2.47 3.0553 2.45 2.4854 2.03 2.4655 0.01 2.0356 0.01 0.0257 0.09 0.0158 5.08 0.0259 0.09 0.0260 5.09 5.0761 0.11 0.0262 0.77 0.0263 0.15 0.0364 2.59 5.0965 1.38 1.3866 1.65 1.7467 0.16 2.4368 2.39 1.6969 2.59 2.5870 2.59 2.5871 0.01 0.0172 2.28 2.5773 5.16 5.1474 2.28 2.5775 0.02 2.5876 2.58 2.5677 0.01 0.0278 0.01 0.0279 5.16 5.1480 5.15 5.1481 4.51 4.5282 0.15 0.1283 0.22 0.8784 0.2 0.285 0.15 0.1486 5.18 5.1787 5.17 5.1888 5.18 5.1789 0.01 0.0290 5.15 5.1391 5.01 5.0192 0.02 0.0293 5.17 5.1694 2.36 1.4495 0.02 0.0296 5.12 5.1197 5.12 0.0298 2.58 2.5699 0.02 0.02100 0.69 0.49
1 0.01 0.012 0.01 0.013 0.01 0.01
I C 5 F 1
EE PBMODEPIN NO.4 0.01 0.015 5.04 5.056 5.01 4.997 0.01 0.018 5.16 5.16
1 2.22 2.152 0.03 0.033 5.12 5.114 4.89 4.95 4.51 4.416 2.68 2.877 2.86 2.858 2.32 2.629 2.37 2.3110 1.35 2.3111 2.6 2.2812 2.37 2.1313 0.85 0.3114 1.95 0.315 2.38 2.3616 2.36 2.3317 2.37 2.3518 4.52 4.4319 0.01 0.0120 2.4 2.3721 0.27 2.3322 2.39 2.3823 2.52 2.4924 0.01 0.01
1 0.01 1.72 3.29 3.263 3.29 3.274 0.08 0.45 0.05 0.46 0.05 0.37 1.72 1.98 1.72 0.89 2.78 0.510 1.72 0.711 0.01 1.612 0.01 0.0113 3.44 3.2814 0.01 2.115 3.43 3.116 1.71 2.717 3.31 3.118 1.7 2.219 0.7 120 0.01 0.0121 3.39 3.2422 2.6 2.923 3.39 3.2524 2.4 2.5
EE PBMODEPIN NO.25 1.86 1.926 1.1 1.6327 2.5 1.0828 0.01 0.0129 0.01 0.0130 2.7 1.2231 0.01 0.0532 0.01 0.0133 2.7 3.234 3.28 3.2435 0.4 1.1336 1.7 1.537 2 2.538 1.7 3.939 0.01 1.240 1.7 1.541 3.4 3.2842 0.01 1.543 1.71 2.744 1.82 3.1945 1.69 1.646 1.7 1.547 3.41 3.2848 1.68 3.0449 1.68 3.0350 0.01 0.0151 3.39 3.2752 3.39 3.2953 1.63 154 0.13 0.555 0.13 1.2656 0.12 0.557 1.64 158 3.39 3.2859 0.12 0.460 1.64 1.561 0.12 0.562 0.01 0.0163 0.01 0.464 1.85 1.865 1.38 0.0366 0.01 0.0167 0.03 0.3468 3.39 3.2869 0.01 0.0170 3.36 3.2271 0.09 0.3772 0.01 0.0173 0.01 3.2374 3.37 3.2575 3.38 3.2876 3.39 3.2877 3.38 3.1778 0.01 0.0279 0.01 0.01
EE PBMODEPIN NO.80 1.6 1.4981 3.39 3.2782 1.59 1.9183 0.01 0.0184 1.4 1.2585 1.8 1.586 1.6 187 3.39 3.2888 1.6 1.389 1.8 290 1.7 1.591 0.01 0.0192 1.61 1.8993 0.01 1.894 1.29 1.9995 0.01 0.0196 1.69 2.297 3.39 3.2898 1.69 1.8599 1.78 1.3100 1.58 1.52101 0.01 0.01102 1.61 1.81103 1.61 1.9104 1.61 1.7105 3.39 3.28106 0.01 0.01107 0.01 0.01108 0.01 0.01109 0.01 0.01110 1.68 1.61111 0.02 0.01112 0.02 0.01113 0.01 1.07114 0.01 0.01115 1.69 1.64116 1.69 1.61117 0.01 0.01118 1.69 1.5119 3.39 3.25120 0.01 0.01121 0.01 0.01122 0.01 0.01123 0.01 0.01124 1.7 1.64125 3.39 3.28126 0.01 0.01127 0.07 3.25128 0.01 0.01129 0.01 0.01130 0.01 0.01131 1.85 2.35132 3.37 0.04133 3.38 3.21134 3.38 3.21
EE PBMODEPIN NO.135 3.03 0.01136 0.03 0.01137 0.01 3.26138 3.39 3.25139 0.01 0.01140 0.01 0.01141 3.29 3.35142 1.89 2.32143 1.66 2.6144 1.66 2.26145 0.01 0.01146 0.01 0.01147 0.75 1.23148 0.01 0.01149 3.37 3.21150 0.98 1.32151 0.98 1.31152 3.39 3.26153 1.28 1.62154 1.28 1.65155 0.01 0.01156 0.01 0.01157 1.65 1.31158 1.65 1.31159 3.25 3.36160 2.64 3.21161 3.25 3.2162 2.64 3.21163 3.25 3.21164 2.64 3.2165 0.01 0.01166 2.64 3.14167 1.88 2.15168 0.01 0.01169 2.64 2.1170 1.88 2.3171 2.01 2.3172 1.8 2.2173 1.74 2.3174 1.71 1.69175 0.11 1.68176 0.1 0.16177 3.15 0.36178 3.15 3.2179 3.13 3.25180 0.01 0.01181 0.01 0.01182 10.8 2.3183 0.01 3.25184 0.01 0.01185 0.01 0.2186 3.29 3.26187 3.28 3.26188 0.01 0.02189 0.01 0.01
I C 6 0 3
EE PBMODEPIN NO.190 0.1 1.3191 1.2 3.26192 3.3 0.01193 0.01 0.01194 0.01 0.01195 1.7 1.36196 1.8 0.01197 0.01 2.41198 1.4 3.26199 3.3 0.01200 0.01 0.01201 0.01 1.36202 1.51 2.9203 3.9 3.26204 3.3 3.25205 0.01 3.28206 3.24 3.28207 3.25 3.27208 3.24 0.39
1 3.37 3.382 1.67 2.253 3.37 3.374 1.73 1.775 1.8 1.636 0.01 0.017 1.71 2.28 1.6 2.239 3.38 3.37
10 3.38 2.0711 1.97 1.0312 0.01 0.0113 0.16 1.0514 3.38 3.3715 0.01 0.0116 3.36 3.2517 3.36 3.2918 3.34 3.1819 3.34 3.3120 0.19 0.3921 3.34 3.1322 1.2 2.0523 0.15 0.3924 0.14 0.5625 0.38 0.3426 0.3 0.4927 0.34 0.4528 0.01 0.0129 1.93 0.3330 1.94 0.2431 0.15 1.5832 0.17 0.0833 0.04 0.1934 0.27 3.1535 0.27 2.56
-
3-45 3-46
+ -
STOP PLAY- +
Tran-sistorC201 5.11 0 5.11 0C208 3.36 3.21 3.37 3.21C209 3.37 3.21 3.37 3.21C214 5.33 0 5.33 0C216 3.38 0 3.38 0.01C217 1.82 0 1.82 0C223 3.37 0 3.37 0C302 5.08 0 5.08 0C304 5.03 0 5.03 0C307 2.36 0 2.37 0C308 0.01 0 0.01 0C311 0.12 0 0.12 0C314 2.37 0 2.37 0C315 2.95 2.29 2.93 2.45C316 1.56 0 1.56 0C318 2.87 0 2.88 0C320 2.52 0 2.53 0C322 4.11 0 4.12 0C323 2.37 0 2.37 0C324 2.55 0 2.55 0C325 2.92 0 3.14 0C327 2.68 2.39 2.68 2.39C331 0.03 0 0.03 0C333 5 0 5.01 0C336 50.8 0 5.08 0C337 2.69 0 2.69 0C339 2.64 0 2.66 0C346 5.07 0 5.07C347 2.15 0 2.16 0C348 1.54 0 1.54 0C349 5.07 0 5.06 0C356 2.05 0 2.11 0C357 2.07 0 2.07 0C388 5.08 0 5.09 0C3S3 3.56 0 3.56 0C3S4 0.43 0 0.43 0C3S7 3.15 0 3.15 0C3T1 1.98 0 1.98 0C3T2 2.49 0 2.49 0C3T3 2.51 0 2.51 0C3T4 2.25 0 2.25 0C3T6 5.06 0 5.06 0C413 5.1 0 5.1 0C414 5.11 0 5.11 0C414 5.11 0 5.11 0C416 5.89 0 5.89 0C417 5.88 0 5.88 0C501 5.16 0 5.16 0C502 5.15 0 5.14 0C504 3.17 2.16 3.09 2.47C505 5.14 0 5.14 0C507 4.99 0 4.98 0C511 3.2 1.43 3.25 1.75C511 6.56 0 6.56 0C522 2.58 0 2.57 0
+ -
STOP PLAY- +
Tran-sistorC523 2.58 2.57 2.58 2.56C524 2.58 0 2.58 0C534 0.17 0 0.17 0C535 0.01 0 0.01 0C5G2 4.6 0 4.59 0C5R1 4.8 0 4.74 0C612 3.39 0 3.39 0C614 3.32 0 3.32 0C616 3.31 0 3.31 0C618 1.78 0 1.78 0C642 1.8 0 1.8 0C643 3.37 0 3.38 0C673 3.38 0 3.38 0C6C9 3.38 0 3.38 0C702 4.95 0 4.94 0C710 30.29 0 30.29 0C718 5.05 0 5.06 0C719 5.05 0 5.05 0C727 5.06 0 5.06 0C729 2.74 0 2.74 0C732 2.59 0 2.59 0C751 5.11 0 5.11 0C7S1 4.93 0.51 4.93 0.51C7S2 4.92 0 4.92 0C7V1 5.87 0 5.87 0C7V3 3.3 1.68 3.3 1.68C806 0.06 0 0.06 0C807 0.09 0 3.22 0C812 3.89 0 3.89 0C814 3.89 0 3.91 0C815 0.76 0 0.76 0C816 3.89 0 3.89 0C817 0.76 0 0.76 0C818 3.9 0 3.9 0C820 3.88 0 3.88 0C822 11.7 0 11.7 0C825 5.07 0 5.07 0C828 5.88 2.55 5.88 2.55C829 5.87 2.53 5.86 2.53C830 2.96 2.51 2.97 2.51C831 2.35 2.06 2.35 2.14C832 2.97 2.59 2.97 2.96C833 2.35 2.3 2.35 2.3C850 6.56 6.11 6.56 6.11C851 5.77 0 5.77 0C852 6.57 6.11 6.57 6.11C853 5.77 0 5.77 0C856 11.79 0 11.79 0C887 6.11 0 6.11 0C888 6.11 0 6.11 0C892 6.58 1.11 6.57 1.11C902 1.35 0.06 1.35 0.06C904 1.35 0.33 1.35 0.33C941 5.07 0 5.07 0C945 0.01 0 0.01 0
+ -
STOP PLAY- +
Tran-sistorC946 0.01 0 0.01 0C948 1.57 1.64 1.58 1.64C971 4.17 4.15 2.85 2.82C974 1.61 0.95 1.61 0.95C975 2.22 0.04 2.22 0.04C976 2.23 0.65 2.23 0.65C978 2.24 0 2.24 0C979 1.63 0.46 1.63 0.46C980 2.23 0.32 2.23 0.32C981 1.41 0.16 1.41 0.16C983 2.31 0.32 2.31 0.32C984 1.13 0.11 1.13 0.11C985 2.32 0.41 2.32 0.41C987 5.1 0 5.09 0
22 3.77 3.8323 3.87 3.8124 3.88 3.7925 3.89 3.8826 0.79 0.7927 0.01 0.5628 3.85 3.8529 3.89 3.8830 0.79 0.831 3.88 3.8732 3.89 3.8533 3.88 3.8634 11.71 11.7135 0.66 0.6536 0.47 2.2737 0.48 0.6538 0.01 0.0139 0.66 0.7640 5.08 5.0641 0.01 0.9242 5.03 5.0443 4.99 4.9744 0.08 0.95
IC 8021 5.78 5.782 4.99 4.993 5.09 5.094 0.01 0.015 5.07 5.076 5.88 5.887 0.02 0.028 6.57 6.579 0.41 0.4710 0.01 0.0111 6.59 6.5912 4.99 5.0113 11.78 11.7814 5.76 0.4815 0.01 0.0116 6.58 6.58
IC 9031 5.1 5.12 0.11 0.113 0.09 0.094 2.23 2.235 5.1 5.16 1.24 1.247 0.02 0.028 1.58 1.589 2.24 2.2410 0.01 0.0111 1.41 1.4112 0.01 0.0113 2.21 2.2114 5.11 5.1
33 5.05 5.0534 4.1 4.135 0.01 0.0136 2.72 2.7237 0.04 0.0438 0.04 0.0439 0.04 0.0440 2.72 2.7241 2.71 2.7142 2.59 2.5943 2.45 2.4544 0.01 0.01
IC 7V11 0.01 0.012 0.01 0.013 0.05 0.074 5.03 5.015 5.04 5.036 0.01 0.017 5.16 5.168 0.05 0.059 5.16 5.1610 5.16 5.1611 0.01 0.0112 0.02 0.0913 0.07 0.0814 0.01 0.0115 0.01 0.0116 1.56 1.5617 1.02 1.0218 0.07 0.0719 5.16 5.1520 5.16 5.15
1 3.84 3.842 3.83 3.843 3.83 3.824 3.83 3.855 3.83 3.846 3.84 3.867 3.84 3.868 3.83 3.839 3.83 3.8510 3.83 3.8511 3.84 3.8412 0.36 0.0213 3.88 3.8814 0.13 0.0115 0.12 0.0116 6.09 6.117 6.09 6.0918 0.1 0.0119 6.08 6.0820 6.08 6.0821 4.6 4.6
EE PBMODEPIN NO.36 0.29 3.5637 3.38 3.3738 1.78 1.7739 0.01 0.0840 0.04 0.0841 0.04 0.0142 1.9 1.3943 3.37 3.3744 1.64 1.845 1.7 1.3746 0.04 0.0147 1.68 1.5348 0.02 1.9949 3.38 1.6850 1.89 0.2551 0.81 1.4852 0.01 0.4753 1.35 1.2654 0.01 0.01
1 0.4 0.362 1.28 0.353 1.22 1.674 1.63 1.365 1.05 0.356 1.54 0.337 1.06 1.368 2.33 2.289 0.02 0.3410 0.07 0.3111 3.37 3.3712 4.91 4.9113 3.37 3.3814 3.37 3.3815 1.05 0.3116 0.07 1.5817 1.06 2.7618 2.63 1.219 1.46 3.3720 1.54 3.3821 0.01 3.3722 0.01 3.3823 0.07 3.3424 3.33 3.3425 0.01 3.3826 3.37 0.0127 0.01 3.3828 3.37 0.0229 0.01 0.0130 0.34 0.0131 0.33 0.0132 2.86 2.933 2.86 0.0234 0.01 1.7835 0.01 1.88
I C 6 0 4
I C 7 5 1
I C 6 0 5
I C 8 0 1
I C 9 0 3
I C 7 V 1
EE PBMODEPIN NO.36 0.02 3.3837 3.37 1.9638 2.87 1.9239 2.95 1.8940 0.01 0.2641 0.02 1.9242 0.01 1.9643 2.95 1.9544 2.88 1.9445 2.88 0.0146 0.01 3.3847 3.37 3.3748 0.01 3.09
1 0.01 0.012 0.01 0.013 0.01 0.014 0.01 0.015 0.12 0.46 3.35 3.357 0.01 0.018 3.35 3.35
1 5.05 5.052 1.52 1.523 1.52 1.524 0.01 0.015 2.4 2.416 2.35 2.377 0.98 0.998 0.01 0.019 0.01 0.0110 0.01 0.0111 5.05 5.0512 5.01 5.0213 5.02 5.0414 1.16 1.1815 1.06 1.0916 1.08 1.0917 1.04 1.0518 1.03 1.0519 5.02 5.0220 0.01 0.0121 1.06 1.0722 5.05 5.0523 0.01 0.0124 0.01 0.0125 0.01 0.0126 0.01 0.0127 0.05 0.0528 0.03 0.0429 0.01 0.0130 2.7 2.7131 2.7 2.7232 0.04 0.04
EE PBMODEPIN NO.
I C 8 0 2
EE PBMODEPIN NO. EE PBMODE
PIN NO.15 2.22 2.2216 5.11 5.1117 2.3 2.318 2.3 2.319 0.01 0.0120 2.3 2.321 2.3 2.322 0.01 0.0123 1.18 1.1824 1.06 1.0625 0.01 0.0126 1.41 1.4127 1.51 1.5128 0.01 0.0129 1.5 1.530 1.62 1.6231 0.06 0.0632 2.35 2.35
-
3-47 3-48
Base BaseSTOP PLAY
Emitter EmitterCollector CollectorTran-sistorQ201 2.29 2.45 3.18 2.29 2.45 3.17Q202 1.83 1.91 2.59 1.83 1.91 2.59Q204 3.4 2.89 3.67 3.39 2.86 3.65Q205 3.21 3.27 3.34 3.21 3.27 3.34Q206 2.9 5.26 3.67 2.9 5.26 3.65Q207 2.54 4.88 3.37 2.54 4.6 3.36Q208 5.02 0.19 0.01 5.02 0.19 0.01Q209 2.34 2.89 3.34 2.34 2.89 3.34Q302 -2.07 5.08 5.09 -1.27 5.09 5.09Q303 0.14 -0.99 0.22 0.23 -0.96 0.22Q304 0.01 -0.77 0.21 0.01 -1.08 0.12Q305 0.01 1.88 2.55 0.01 1.88 2.55Q309 0.01 1.65 2.29 0.01 1.65 2.29Q401 0.01 -0.68 5.91 0.01 -0.68 5.91Q402 0.01 -0.65 5.9 0.01 -0.66 5.9Q403 5.09 0.01 0.01 5.09 0.01 0.01Q404 -0.75 5.09 5.09 -0.75 5.09 5.08Q405 -0.91 11.79 11.85 -0.91 11.79 11.85Q501 0.03 0.7 0.01 0.03 0.7 0.01Q504 0.01 2.52 3.13 0.01 2.54 3.13Q505 0.01 2.54 3.19 0.01 2.52 3.19Q506 3.81 0.6 0.04 2.84 0.6 0.04Q601 0.01 0.04 0.19 0.01 0.05 0.19Q7S1 4.09 0.02 0.01 4.14 0.18 0.01Q7S2 0.02 5.1 0.01 0.02 5.11 0.01Q801 0.13 -0.84 0.01 0.13 -0.84 0.01Q802 0.12 -0.76 0.01 0.05 -0.84 0.01Q807 0.01 0.09 2.97 0.01 0.09 2.97Q808 0.01 2.36 2.97 0.01 2.36 2.97Q905 0.19 0.37 1.01 0.19 0.37 1.01Q906 0.01 0.14 0.15 0.01 0.14 0.15Q907 11.79 0.02 11.85 11.79 0.02 11.85Q908 0.02 5.11 0.01 0.02 5.11 0.01Q909 0.08 5.11 0.01 0.08 5.11 0.01Q910 0.01 3.55 4.22 0.01 3.55 4.22Q911 0.01 0.74 0.01 0.01 0.74 0.01Q912 0.01 0.74 0.01 0.01 0.74 0.01Q913 0.01 0.74 0.01 0.01 0.74 0.01Q914 5.06 3.41 2.72 5.06 3.41 2.72
-
3-49 3-50
PRINTED CIRCUIT DIAGRAMS1. MAIN P.C.BOARD (TOP SIDE)
LOCATION GUIDE
-
3-51 3-52
2. MAIN P.C.BOARD (BOTTOM SIDE)
LOCATION GUIDE
-
3-53 3-54
4. KEY P.C.BOARD LOCATION GUIDE
3. POWER P.C.BOARD
NOTES) WarningNOTES) Parts that are shaded are criticalNOTES) With respect to risk of fire orNOTES) electricial shock.
-
3-55
ELECTRICAL TROUBLESHOOTING GUIDEDVD PART
1. POWER CHECK FLOW
No 3.4VA.
No 3.4VA
Is 3.4VA section working?
Is 3.4V present at emitterof Q121?
Replace Q121.
Replace IC101.
Is there a DC voltage atCathode of D105 or D107?
Check FR101
No 5V
Is 3.4VA section working?
Replace Q126.
Is 5.6V present at collectorof Q126?
NO
NO
YES YES
YES
Check D105/D106/D107/D108 and replace.
YES
YES
A. B.
NO
NO
NO
-
3-56
2. SYSTEM OPERATION FLOW
NO
NO
NO
YES
YES
YES
YES
YES
Power On
1. 186 CPU initializes SERVO,DSP & RISC registers2. Write RISC code to SDRAM3. Reset RISC
Show LOGO
Tray Closed ?
Tray Close to Closed position
SLED at Inner Side ?
SLED Moves to Inner Position
1. Judge whether have disc and disc type2. Jump to related disc reading procedure
Recieve OPEN/CLOSE Key?
1. Execute Pressed Key & IR Key2. System operation Routine Loop
1. Stop Playback & Open Tray2. Display tray open message & LOGO
Receive CLOSE Key?
-
3-57
3. Test & debug flow
TEST
Check the AC VoltagePower PCBA(110V or 220V)
YES
Switch on the Power PCBA
YES
Is the DC Voltage outputs OK?(5V, 3.3V, 12V, 5.6V MOTOR)
YES
Make sure the main PCBA don't short onVCCs and switch it on.
YES
Is 3.3V outputs normal on main PCBA?
YES
Connect to PC RS232 Cable and updatethe FLASH memory code.
YES
Update FLASH successfully?
YES
A
Replace power PCBA or AC transformer.NO
Repair or Replace Power PCBANO
Check the regulators or related diodes.NO
Is 1.8V Voltage normal for Zoran IC
YES
1. Check Q203. 2. Check D201.3. Check IC102
NO
1. Check 27MHz system clock.2. Check system reset circuit.3. Check FLASH R/W enable signal
PRD,RWR.4. Check RS232 SIGNALS.5. Check FLASH Memory related circuit.
NO
-
3-58
NO
NO
YES YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
A
RESET or Power On.
Flash Memory operatesproperly?Show LOGO?
Does Tray move inside whenit is not at closed position?
B
Check connection lines betweenFLASH & ZR336888 and the FLASHaccess time whether is suitable or not.
SDRAM works properly?Check connection linesbetween SDRAM & ZR36882and the SDRAM is damaged.
ZR36882 VIDEO outputsproperly?
Check the related circuit ofZR36882
Have TV signal output?
Check AV cable connectionto TV set.
Normal OUTSW & INSWsignals?
Check the filtering and ampcircuit of TV signal.
Check the load OPEN &CLOSE switch
Normal OPEN & CLOSEsignal?
Check the Tray control IOpins on ZR36882 &AM5869S
Normal LOAD+ & LOAD -signal?
Check the cable connectionbetween main PCBA andloader.
Check the Tray controlamplifying circuit on Motordriver.
-
3-59
B
Motor Driver MUTE Pin isHigh?
Does the SLED move toinner side when it is at outterposition?
Do not put in disc and trayclose.
Optical Lens has movementsfor searching Focus?
C
NO
NO
YES
YES
YES
YES
YES
YES
Check the connection line ofMUTE signal.
NO
Is SLED_S DC Level higherthan 1.65V?
Check the related circuit ofFMSO.
NO
SLED+ and SLED- outputproperly?
YES
Check the amp circuit onmotor driver.
Check FOCUS_S connectionOn ZR36882 and motor dirv-er.
NO
NO
Check the cable connectionwith MECHA.
Proper FOCUS_S outputs tomotor driver?
Proper FACT+ &FACT- outputs?
Check the amp circuit onmotor dirver.
NO
Check cable connect on withpick-up head.
-
3-60
C
LD_DVD or LD_CD output properly?
Laser turns on when reading disc?
Put disc in?
Disc ID is correct?
Does spindle rotate?
D
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Check the laser power circuiton ZR36882 and connectingto power transistor.
NO
Collector voltage of powertransistor is OK?
Check the related circuit onlaser power transistor
NO
Check cable connectionbetween transistor ouputand pick-up head.
YES
YES
YES
Check the related circuit on ZR36882 RFL signal.
Check SPINDLE_S relatedcircuit on ZR36882.
NO
NO
Check the spindle controlamp circuit of motor driver.
NO
Laser off
Proper RF signal onZR36882?
Check LD_DVD & LD_CDsignal
Proper SPINDLE_S signalon ZR36882
SP+ & SP- output properly?
Check the cable connectionbetween spindle and mainPCBA.
-
3-61
D
Proper signals on A,B,C,Dof ZR36882Focus ON OK?
Track On OK?
Disc is play ?
E
NO
NO
NO
YES
YES
YES
YES
YES
Check connections betweenZR36882 and pick-up head.
NO
Check FE signal onZR36882
YES
Check the FOCUS_S connection on ZR36882and motor driver.
NO
Check FOCUS_S signalon ZR36882
YES
YES
Check the TRACK_S connection on ZR36882and motor dirver.
NO
Check the tracking controlamp circuit on motor driver.
NO
Normal TE Signal onZR36882?
NO Check the related circuit on ZR36882
Properly TRACK_S signalon ZR36882?
TACT+ & TACT- outputproperly?
Check cable connection onpick-up head.
Check RF signal waveform.
-
3-62
E
Audio DAC received correct data stream?
Normal Audio outputwhen disc playback?
Normal IR.VFD & Frontpanel key functions?
TEST END
NO
NO
YES
YES
YES
YES
Check connection betweenZR36882 & Audio DAC.
NO
Normal Audio DAC out?
YES
Check the related circuit ofAudio DAC.
NO
Check Audio filter, amplify,mute circuit.
Communications betweenIR.VFD Front panel key &ZR36882 is normally?
NO Check communication lineson ZR36882
Check the cable connectionon Front panel.
-
3-63
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING1. SYSTEM 27MHz CLOCK, RESET SIGNAL
1) ZR36882 main clock is at 27MH(X601)
FIG 1-1
3.1V,27MHz
2) ZR3682 reset is low active
FIG 1-2
Reset Time
3.3VA
PWR_CTL
RESET
-
3-64
2. SDRAM CLOCK1) SDRAM clock is at 143MHz
FIG 2-1
IC603 PIN38
CLK=143MHz,Vp-p=3.3V
3. TRAY OPEN/CLOSE SIGNAL1) Tray open/close waveform
FIG 3-1
OPEN
OPEN CLOSE
CLOSE
LM-
LM+
-
3-65
2) Tray open waveform
FIG 3-2
3) Tray close waveform
FIG 3-3
OPEN
CLOSE
LM-
LM+
OPEN
CLOSE
LM-
LM+
-
3-66
4. SLED CONTROL RELATED SIGNAL(NO DISC CONDITION)
FIG 4-1
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FIG 5-1
FOCUS_S
FOCUS+
FOCUS-
SLED_S
DRVSB
SLED+
SLED-
-
3-67
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
FIG 6-1
7. DISC TYPE JUDGEMENT WAVEFORM
FIG 7-1(DVD)
DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V
FACT+
FE
SBAD
VR_CD
DVD_LD
CD_LD
-
3-68
FIG 7-2 (DVD)
FIG 7-3 (CD)
FACT+
FACT+
FE
FE
SBAD
SBAD
-
3-69
FIG 7-4 (CD)
8. FOCUS ON WAVEFORM
FIG 8-1 (DVD)
FE
FOSO
FACT+
FACT-
FACT+
FE
SBAD
-
3-70
FIG 8-2 (CD)
9. SPINDLE CONTROL WAVEFORM(NO DISC CONDITION)
(DVD) FIG 9-1
FOCUS
FACT+
SPINDLE_S
SP+
SP-
FE
FACT-
-
3-71
10. TRACKING CONTROL RELATED SIGNAL(System checking)
FIG 10-1 (DVD)
FIG 10-2 (CD)
TE
TRACK_S
TACT+
TACT-
TE
TRACK_S
TACT+
TACT-
-
3-72
11. RF WAVEFORM
FIG 11-1
12. ZR36882 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF)
FIG 12-1
RFO
SPDIF
-
3-73
13. ZR36882 VIDEO OUTPUT WAVEFORM1) Full colorbar signal(CVBS)
FIG 13-1
2) Y
FIG 13-2
JK702 pin6
JK702 pin7
-
3-74
14. AUDIO OUTPUT FROM AUDIO DAC1) AUDIO L/R
FIG 14-1
3) C
FIG 13-3
JK702 PIN8
JK702 PIN4,5
1KHz 0DB
-
3-75
2) Audio Related Signal
FIG 14-2
AOUT0
ABCK
ALRCLK
-
3-76
BLOCK DIAGRAMS1. SYSTEM BLOCK DIAGRAM
M
M
DIS
C
SPIN
DLE
MO
TOR
LOAD
ING
MO
TOR
DECK MECHANISM
DVD
:RF,
A,B,
C,D
CD:R
F,A,
B,C,
D,E
,F
PICK UP
IC60
4M
X26L
V160
TFL
ASH
RO
M
Y / C
AC 90
V~24
0V50
HZ/6
0Hz
OPE
N, CL
OSE
27M
Hz
X-TA
L
IC60
5K
S24C
021C
SEE
PRO
M
IC40
2N
JM45
80O
P-AM
P
LOAD+/-
FACT+/-,TACTT +/-
MOT_SPDL +/-
SLED
(FEE
DING
)M
OTO
R
SLED+,SLED--
IC20
1AM
5869
SM
OTO
RD
RIV
ER
M5V
DV3
3
RFV
33/D
V33/
1.8V
ALPC
LK , AB
CLK
AMCL
K , A
OUT
O
ASPD
IFCO
AX
OPT
ICAL
DVD
_LD
,CD_
LD,
VC
M5V
HOM
ESW
OUT
SW ,
INSW
DR
VSB
,TR
ACK_
S,FO
CUS_
S,SL
ED_S
SPI
ND
LE_S
VCR_
DATA
DVD
_R
ESET
MUT
E_C
CN60
2H
YPER
_TE
RM
INAL
MC
DV3
3
IC60
3H
Y57V
6416
20E
SDRA
M
MD
IC60
1ZR
3688
2ELC
GD
SP/M
PEG
/RF
+12
V
5V
RL
IC50
1M
N10
1DF1
0GVC
R M
ICO
M
DVD
_EN
A*D
VD_C
LKD
VD_D
ATA*
POW
ERBO
ARD
3.3V
33V
5.3V
A5.
0VM
5V/5
VT
PWR
_CTL
_H
Pb(B
)
Pr(R
)
Y(G)
IC80
1TD
A960
5HH
IFI
PICK
SEL
CN60
1D
OW
NLO
AD
5V
5V/R
EG12
V
IC60
7CS
5331
AKA
RAO
KE
AMCL
KAB
CLK
ALR
CLK
AIN
RL
MIIC
_DET
MIC
_IN
KAR
AOKE
OPT
ION
MEM
AD[00
:18
] FL
ASH
CS-
MEM
RD
-
MEM
WR-
MEM
DA[
0:14
]
RAM
ADD
[00:1
0]R
AMB
APC
LKR
SMCS
0R
AMR
AS#
RAM
CAS-
RAM
WE-
RAMDAT[00:15]RAMDQM
MO
TOR_
VCC
REG
_12
V
REG
_9V
8V
MUT
ECI
RCU
IT
MUT
E
A_L
+/-
A_R
+
/ -
-
3-77
IC20
1AM
5869
SM
otor
Dr i
ver
DVD
: A,B
,C,D
, RF
CD: A
,B,
C,D,
E,
F,
RF
MO
T_SP
DL
+/-
X601 IC
601
ZR36
882E
LCG
MPE
G /
DSP/
RF
FOCU
S_S,
TR
ACK_
S,SL
ED_
S, SP
IND
LE_S
,
SPDL
_ SEN
S +/
-FA
CT +
/-, TA
CT +
/-
SLED
+
/-
LOAD
+
/ -
27M
Hz
X-TA
L
DVD
_LD
, CD
_LD
, VR
_CD
, VR
_DVD
PICK
SEL
HO
MES
W,IN
SW,O
UTSW
DR
VSB
FLAS
HR
OM
FLAS
HCS
-M
EMR
D-
MEM
WR-
MEM
DA[
0:15
]
MEM
AD[0:
19]
EEPR
OM
SCL,
SD
A
CN60
1D
OW
NLO
ADR
XD, TX
D
M D
DIS
C
CD_M
D, D
VD_ M
D
OPE
N ,C
LOSE
2. SERVO BLOCK DIAGRAM
-
3-78
3. AUDIO & VIDEO IN/OUT BLOCK DIAGRAM
S/W
IC90
3B
H78
968F
S
IC60
1M
PEG
ZR36
882
IC60
5EE
PRO
MIC
801
HI-F
I
IC30
1AV
C P
V.IN
A.IN
_L
A.IN
_R
V.O
UT
A.O
UT_
LA.
OUT
_
R
Y
PbPr
COAX
IAL
DVD
_A_
LD
VD_A
_RO
PTIC
AL
Y C
A.O
UT_
RA.O
UT_
R
A.O
UT_
L
A.O
UT_
L
DVD
_A_
R
DVD
_A_
L
DVD_A_L
DVD_A_R
A.IN
_R
A.IN
_L
A.IN
_L
A.IN
_R
6
Y C
V_O
UT_1
Y C
EU1_
V_O
UT
Y / G
reen
Pb/ B
lue
Pr /
Red
V.IN
Y / G
reen
Pb/ B
lue
Pr /
Red
ASPD
IF
MUT
E_C
SCL
SDA
A_L+
/-IC
402
OP-
AMP
V_O
UT_2
A_R
+/-
V_IN
-
3-79 3-80
A B C D E F G H I J K L M N O P Q R S T
CIRCUIT DIAGRAMS1. SYSTEM CIRCUIT DIAGRAM
-
3-81 3-82
2. SERVO CIRCUIT DIAGRAM
A B C D E F G H I J K L M N O P Q R S T
-
3-83 3-84
3. AV/JACK CIRCUIT DIAGRAM
A B C D E F G H I J K L M N O P Q R S T
-
POSITION DRAWING OF DECKMECHANISM PARTS Top View......................................................4-1 Bottom View ...............................................4-1
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM01.Disassembly of Drum assembly ................4-202.Disassembly of Plate top disassembly..... 4-403.Holder Assembly CST...............................4-404.Disassembly of Gear Assembly
Rack F/L....................................................4-405.Opener Door .............................................4-406.Arm Assembly F/L .....................................4-407.Lever Assembly S/W.................................4-408.Motor Assembly L/D..................................4-509.Gear Wheel ...............................................4-510.Arm Assembly Cleaner..............................4-511. Head F/E ...................................................4-512.Base Assembly A/C Head .........................4-513.Brake Assembly T .....................................4-614.Arm Assembly Tension..............................4-615.Reel S / Reel T..........................................4-616.Base Assembly P4 ....................................4-717.Opener Lid ................................................4-718.Arm Assembly Pinch .................................4-719.Arm T/up ...................................................4-720.Supporter, Capstan ...................................4-821.Belt Capstan/Motor Capstan.....................4-822.Lever F/R ..................................................4-823.Clutch Assembly D37................................4-824.Gear Drive/Gear Cam ...............................4-925.Gear Sector...............................................4-926.Brake Assembly Capstan..........................4-927.Plate Slider................................................4-928.Lever Tension............................................4-929.Lever Spring..............................................4-930. Lever Brake..............................................4-931.Gear Assembly P2/Gear Assembly P3 ...4-1032.Base Assembly P2/Base Assembly P3...4-1033.Base Loading ..........................................4-1034.Base Tension ...........................................4-1135.Arm Assembly Idler Jog ..........................4-11
DECK MECHANISM ADJUSTMENT Fixtures and tools for service ................4-121. Mechanism Assembly Mode Check ........4-132. Previous Preparation for
Deck Adjustment .....................................4-143. Torque Measuring ...................................4-144. Guide Roller Height Adjustment..............4-15
4-1. Prior Adjustment...............................4-154-2. Fine Adjustment ...............................4-15
5. Audio/Control (A/C) Head Adjustment......4-165-1. Prior Adjustment...............................4-165-2. Tape Path Check between Pinch
Roller and Take-up Guide ................4-175-3. Fine Adjustment
(Azimuth Adjustment).......................4-176. X-distance Adjustment ............................4-177. Adjustment after Drum Assembly
(Video Heads) .........................................4-188. Tachometer Adjustment of
Deck Assembly........................................4-188-1. Check of Audio, RF Normalization
Time (Locking Time) in Play after CUE or REV.....................................4-18
8-2. Check of Tape Curl and Jam Status .......................................4-18
PROTECTION, MAINTENANCE ANDCHECK OF VIDEO FUNCTION1. Checking Points before Repair ...............4-192. Essential Check and Repair....................4-203. Regular Check and Repair......................4-204. Tools for Check and Repair.....................4-205. Maintenance Process..............................4-20
5-1. Removal of Foreign Materials..........4-205-2. Grease Application...........................4-21
TROUBLESHOOTING GUIDE1. Deck Mechanism.....................................4-232. Front Loading Mechanism.......................4-26
EXPLODED VIEWS1. Front Loading Mechanism Section...........4-282. Moving Mechanism Section(1) .................4-293. Moving Mechanism Section(2) .................4-30
SECTION 4 MECHANISM OF VCR PART(D-37)CONTENTS
-
POSITION DRAWING OF DECK MECHANISM PARTS
4-1
5
4
3
2
6
9
108
12
1816
1917
13
15
111
33
14
7
15
35
Top View
Bottom View
21
21
24
23
22
3132
3132253428
27
29
20
2630
24
1 Drum Assembly 3 screws A-1 T2 Plate Top 2 hooks A-2 T
2 3 Holder Assembly CST 6 chasses A-2 T2,3 4 Gear Assembly Rack F/L 1 hook A-2 T2,3,4 5 Opener Door Chassis Hole A-2 T2,3,4,5 6 Arm Assembly F/L Chassis Hole A-2 T
7 Lever Assembly S/W Chassis Hole, A-2 T1 hook
8 Motor Assembly L/D 1 screw A-3 T9 Gear Wheel 2 hooks A-3 T10 Arm Assembly Cleaner Chassis Embossing A-3 T11 Head F/E Chassis Embossing A-3 T12 Base Assembly A/C Head 1 screw A-3 T
2,3 13 Brake Assembly T 1 hook A-4 T2,3 14 Arm Assembly Tension 1 hook A-4 T2,3,13,14 15 Reel S / Reel T Shaft A-4 T
16 Base Assembly P4 Chassis Embossing A-5 T17 Opener Lid Chassis Embossing A-5 T
17 18 Arm Assembly Pinch Shaft A-5 T17 19 Arm T/up 1 hook A-5 T
20 Supporter, capstan Chassis Hole A-6 B17,18 21 Belt Capstan/Motor Capstan 3 screws A-6 B
22 Lever F/R Locking Tab A-6 B21, 22 23 Clutch Assembly D37 Washer A-6 B
24 Gear Drive/Gear Cam Washer/Hook A-7 B25 Gear Sector Hook A-7 B
21 26 Brake Assembly Capstan Chassis Hole A-7 B21,22,23, 27 Plate Slider Chassis Guide A-7 B24,252621,22,23, 28 Lever Tension 1 Hook A7 B24,2526,2721,22,23, 29 Lever Spring 1 Hook A-7 B24,2526,2721,22,23, 30 Lever Brake 1 Hook A-7 B24,2526,2725 31 Gear Assembly P2/ Bass A-8 B
Gear Assembly P32, 3, 14, 32 Base Assembly P2 6 Chasses A-8 B25, 31 /Base Assembly P325, 31 33 Base Loading 3 Hooks A-8 B2,3,14 34 Base Tension Chassis Embossing A-9 T
35 Arm Assembly Idler Jog Locking Tab A-9 T
Parts firstly Disassembled
Order Of Dis-assembled Part Fixing Type
Ref.Draw-ings
Position
NOTE : Assembly order is a reverse of disassembly order.
(1) For assembly, check the assembly mode is accurate. (2) Parts firstly disassembled indicate parts firstly disassem-
bled in disassembly of related parts.
T:Top, B:Bottom
-
4-2
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM
Cap, FPC
Drum Assembly
Cable Flat
(S1) (S1)
(S1)
Holder FPC
H1
H2
1. Disassembly of Drum Assembly(Figure A-1)
1) Separate cable flat from the Drum FPC and the CapstanMotor.
2) Release 3 screws (S1) on the bottom side of the chassis,and separate the drum assembly.
3) Release the hooks (H1, H2) and separate both the holderFPC and the Cap FPC (disassemble if necessary).
Fig. A-1
Cautions in assembly of FPC
Holder FPC
Drum FPC
Cap FPC
Assembly shape seen in the reverse direction
-
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM
4-3
(B)
(E)
(C)
Plate Top
Arm Assembly F/L
Gear Assembly Rack F/L
Opener Door
Holder Assembly CST
(B')
(H3)
(A) (B)
Lever Assembly S/W
(H4)
(E)
Fig. A-2
(Fig. A-2-1)
(Fig. A-2-2)
(Fig. A-2-5)
(Fig. A-2-6)
(Fig. A-2-3)
(Fig. A-2-4)
-
2. Disassembly of Plate Top (Fig. A-2-1)1) Separate the right part while leaning back the (B) part of
the plate top toward the arrow direction.2) Separate the left part while leaning back the (B) part of
the plate top toward the arrow direction.(Tool used: Tool such as (-) driver, auger, etc with point-ed or flat end)
CAUTIONSAssemble while pressing the (C), (C) part after correspond-ing them as in drawing.
3. Holder Assembly CST (Fig. A-2-2)1) Firstly separate the left part from the groove on the (D)
part of chassis while moving the holder assembly CSTtoward the arrow direction.
2) Separate the right part from each groove of chassisCAUTIONS
Assemble by inserting the left part after firstly inserting the(E) part of the holder assembly CST into the groove on the(E) part of chassis.
4. Disassembly of Gear Assembly Rack F/L (Fig. A-2-3)
1) Separate the hook (H3) while leaning ahead the hook (3)after moving the gear assembly rack F/L toward the arrow(A) direction.
2) Separate the gear assembly rack F/L toward the arrow (B)direction.
CAUTIONSFor the assembly, correspond the gear part of gear assem-bly rack F/L to the gear drive.
5. Opener Door (Fig. A-2-4)1) Separate the opener door ahead from the guide hole of
chassis while turning it clockwise.
6. Arm Assembly F/L (Fig. A-2-5)1) Firstly separate the left part of the arm assembly F/L from
the groove of chassis while pushing the arm assembly F/Ltoward the arrow direction.
2) Separate the right part from the groove of chassis.).7. Lever Assembly S/W (Fig. A-2-6)1) Separate the lever assembly S/W while pushing it toward
the arrow direction after removing the hook (4) on the leftside of chassis.
4-4
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM
(B')
(C')(C)
(B)
(D)
Holder Assembly CST Chassis
Chassis
(H4)
Gear Rack F/L
Gear Drive
-
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM
4-5
8. Motor Assembly L/D (Fig. A-3-1)1) Take the connector (C1) connected to the Capstan motor
PCB out. 2) Remove a screw (S4) of the chassis (S4) and step back-
ward, and disassemble it while holding it up.
9. Gear Wheel (Fig. A-3-2)1) Release the hook (H5) of the gear wheel and disassemble
it upward.
10. Arm Assembly Cleaner (Fig. A-3-3) 1) Separate the (A) part of Fig. A-3-1 from the embossing of
chassis, and hold it up while turning it anti-clockwise.
11. Head F/E (Fig. A-3-4)1) Separate the (A) part of the head F/E from the emboss-
ing of chassis, and hold it up while turning it anti-clock-wise.
12. Base Assembly A/C Head (Fig. A-3-5)1) Release a screw (S5) and disassemble while holding it up.
Arm Assembly Cleaner
Motor Assembly L/D
Gear Wheel
Base Assembly A/C Head
(S4)
(S5)
Head F/E
(A)
(C1)
(H5)
(A)
Fig. A-3
(Fig. A-3-3)
(Fig. A-3-5)
(Fig. A-3-4)
(Fig. A-3-2)
(Fig. A-3-1)
-
4-6
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM
Brake Assembly T
Reel T
Spring Tension
Arm Assembly Tension
Spring TensionReel S
(H7)
(H8)
(H6)
Fig. A-4
13. Brake Assembly T (Fig. A-4-1)1) Release the spring tension from the lever spring hook
(H6). 2) Disassemble the brake assembly T while holding it
upward.
14. Arm Assembly Tension (Fig. A-4-2)1) Release the spring tension the hook (H7) from the arm
assembly tension. 2) After releasing the hook (H8) of the base tension, sepa-
rate it while holding it up.
CAUTIONSSpring used for both brake assembly T and arm assemblytension is used (2EA used).
15. Reel S/Reel T (Fig. A-4-3) 1) Disassemble the reel S/ reel T while holding it up (com-
parison between Reel S and Reel T)
Reel S Reel T
(Fig. A-4-3)
(Fig. A-4-2)
(Fig. A-4-1)
(Fig. A-4-3)
-
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM
4-7
Opener Lid
Arm Assembly Pinch
Base Assembly P4
Arm T/up(A)
(B)
(C)
Chassis
(C)
(H9)
Fig. A-5
16. Base Assembly P4 (Fig. A-5-1)1) Release the (A) part of the base assembly P4 from the
embossing of chassis.2) Hold the base assembly P4 up while turning it anti-clock-
wise.
17. Opener Lid (Fig. A-5-2)1) Release the (B) part of the opener lid from the embossing
of chassis.2) Disassemble the opener lid upward while turning it anti-
clockwise.
18. Arm Assembly Pinch (Fig. A-5-3) 1) Hold the arm assembly pinch up.19. Arm T/up (Fig. A-5-4)1) Turn the arm T/up to release the anchor jaw (H9) part of
chassis and then hold it upward.
CAUTIONSFor the assembly, check the (C) part of the arm assemblypinch is assembled as in drawing.
- REVERSE THE MECHANISM.
(Fig. A-5-2)
(Fig. A-5-1)
(Fig. A-5-3)
(Fig. A-5-4)
-
4-8
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM
Chassis
(S6)
Belt Capstan
Motor Capstan
Washer(W1)
Lever F/R
Clutch Assembly D37
(L1) (L1)
Suppoter Capstan
Fig. A-6
20. Supporter, Capstan (Fig. A-6-1)1) Turn the supporter and Capstan by 90 deg. clockwise
with a driver for disassembly.
21. Belt Capstan (Fig. A-6-2) /Motor Capstan (Fig. A-6-3)
1) Separate the belt Capstan.2) Undo 3 screws (S6) on the bottom side of chassis and dis-
assemble it upward.
22. Lever F/R (Fig. A-6-4) 1) Release the locking tab (L1) and then disassemble it
upward.
23. Clutch Assembly D37 (Fig. A-6-5)1) Remove the washer (W1) and then disassemble it
upward.
(Fig. A-6-1)
(Fig. A-6-2)
(Fig. A-6-3)
(Fig. A-6-4)
(Fig. A-6-5)
-
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM
4-9
Gear Drive
Washer (W2)
Gear Cam
Plate Slider
Lever Tension
Lever spring
Base Loading
Gear Sector
(B)
(A)
(H10)
(W2)
(L2)
(H11)
Chassis
Gear Cam Hole(C)
Gear Cam Hole(B)
Gear Drive Hole(A)
Brake Assembly Capstan
Lever Brack
Fig. A-7
24. Gear Drive (Fig. A-7-1)/Gear Cam (Fig. A-7-2)
1) Remove the washer (W2) and then disassemble thegear drive.
2) Release the hook (H10) of the gear cam and then disas-semble it upward.
CAUTIONSFor the assembly,