Lg Zenith C-line Zp94 95 Projection Tv Training Manual 2000 [Et]

2000 C-Line Projection TV Zp94 & ZP95

Z E N I T H E L E C T R O N I C S C O R P O R A T I O N

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MBR3475Z924-10092

AUXILLIARY

CURSOR RIGHT

CURSOR UP

CURSOR LEFTCURSOR DOWN

GREEN (3X3 ADJUSTMENT)

RED (7X5 ADJUSTMENT)

REMOVE COLOR

INITIALIZE RASTERPOSITIONROM READ

CROSSHATCH /VIDEO MODE

ADJUSTMENT

ROM WRITE

PHASE

DIGITAL CONVERGENCE REMOTE CONTROL

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T901Switch ModeTransformer

I902Opti-Coupler

I903Opti-Coupler

Q905SCR

28V

ShutdownInput

AC

1

3DrainI901

SwitchMode

IC Reg

Q914SCR

4

Q910Buffer

Q902Buffer

Raw 150V

T901Switch ModeTransformer

SBY+7PQS2

+29V

+29 toAudioCircuitPQU1

Common-ActionShutdown

Input

AC

I902Opti-

CouplerOCP

I903Opti-

CouplerCAS

1

3Drain

I901SwitchMode

IC

Protect

Regulate

4

+28V

+35V

17

14

11

2

8

S903Relay

S902Relay

SW+35PQS1

D912G

D927G

I905

I906

I907

SBY+11PQD2 &

PQS1

SW+5PQS2

I908 SW+12PQD2

D949G

D931G

S901AC Relay

To Main PowerSupply PQD1

Q905

Q901

D902

D903R

5

Gnd

Vin

ZP94/95 SERIES CHASSIS STBY POWER SUPPLYCIRCUIT

Q902

Q910

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IC

4

R906R905D902

D904C907

R908 D905

C908

8

9

T901

AC

R909

Q901

C910R910

1

23

I903

4

28V

R945

R911

Q905

C947

R955

Sw +12V

Sw +5V

Stby +7V

D936 D935

D933 D932

D938Stby +11V

D941

D921

Q909

C949R959

Q908

R958

+28V

R957

D945Q903

On/Off

OnOff On

Off

D946

R960D944Sw +12V

D943Sw +5V

D957

D958Protect 1

PQS2R198

Pin 10

D015Sw +9V

D014Sw +5V

D016Sw +3.3V

Sw +2.5V

Q912

C956R969

D951

R960D952

Stby +11V

D955

Stby +7V

D959

D960

Protect 2PQS2R014

Pin 11D032

Stby +5V

D007Stby +9V

Stby +3.3V

D954

D953

R968

R967 D956

11

12

ZP94/95 STBY POWER SUPPLY (Low Voltage) SHUT-DOWN CIRCUIT

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ZP-94/95 SERIES "POWER ON & OFF" DIAGRAM

I001Microprocessor

53 PQS1

8

R958D946 To Gate of Q914

(Shutdown SCR)

R959

6 ShutdownInputs,

Active Low

PowerOn/Off

+28V

C948

SW+5V

Sub Power PWB

Signal PWB

RP36

CP44

HVcc

C964Power/Deflection PWB

I701H Drive IC

15 8Def.B+Hoz. Out

Signal Sub PWB

C544

2.5V

I907SW+5VReg IC5

1

I908SW+12VReg IC

1

5

2

2

3

3

VDD5V

L004Q026

R029

D034

1

C074

STBY+5V

3.3V

3.9V

61

54

Reset

I006Reset 2

3

1

SBY11V

3.3V3.3V

C032

R053

I905STY+7V

2

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Q002

I008STBY+5V

1

3

2SYB+7V

PQS2

D928

D948SW+12V

R949

R950

+28V

D947

PQD2

1DP21

RP38RP37

QP04 DP35

DP363

L701

I906STY+11V2

2

3

Q909

Q908

R957

D945Q903

R951

Off On

On

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C075

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Sub CCD

Main FV Det

G+Reset

ZP-94/95 SYSTEM CONTROL PORT DESCRIPTION

Sub FV Det

Comp

IRef

I014LevelShift

CLOCK

DATA

ENABLE

AFC

MAINTUNER

Audio DSPAC3/ProLogic

I001

6

62

63

64

1

28

30

10

8

U201

Main/Sub AFC

IRIn

VSS (Gnd)

OSC Out

OSC In

CLH 26

27VRefHS

57

56 SCL3

SDA3

ADKeyIn

5Ft. Panel Control Keys

Key In

DATA

CLOCK

ENABLE

AFC

PinPTUNER

11

7

U202

34

35

17

18DSP Err Mute

16

15

19

46

20

21

DSP SI

DSP Sck

DSPSS

DSPRST

FC Enable

Clock

Data

Clock

Data

Enable

Flex Conv & PinPUnit

U205

DSP Err

DSP SI

DSP Sck

DSPSS

DSPRST

FE Enable1

SO Select

FE Enable2

AVDD 3.3V

Test

DSP S0

DSP Busy

SCL2

SDA2

SCL

SDA

SCL

SDA

SCL

SDA

SCL

SDA

SCL

SDA

3D/YCComb Filter

Front AudioControl

Front EQ

Cent EQ

Deflection

44

50

60

59

13

12

I701

IS10

IS05

U204

SCL

SDA

SCL

SDA

Cent/LFE/PinPAudio Control

DAC3IS01

IS08

SCL

SDA

RainforestIC

IX01

Reset 54

32CLL

43

BVCOI 42

33

52

IS03

IS05

61VDD (3.3V)

SCL

SDA

SCL1

SDA1

SCL

SDA

SCL

SDA

EEPROM

DAC 1

DAC 2 3

2I004

I003

I002

SDA

SCL

Rear AudioControl IS11

Half Tone

B+Fail

Power On/Off 53

9

40

45

55VSync

VMute

36VRef

39

47

4

51

29

19

23

37

41

VSS (Gnd)

Dimmer

OSD Blk

DSP Reset

AC In

POO

OSD R

OSD Xo

OSD B

OSD X1 48

38

39OSD B

OSD G

N/C

Pin ID Function Active1 IRIN Receives Remote Control Inferred pulses. Data2 SDA1 Serial Data Sent and Received from the EEPROM, A/V Selector, DAC1, DAC2.

Function of I2C. Data

3 SCL1 Serial Clock Synchronization Sent to the EEPROM, A/V Selector, DAC1, DAC2. Function of I2C.

Data

4 Dimmer Receives DC voltage generated from the Photo Receiver on the Front Panel monitoring Room Light. For AI

DC

5 AD Key In Receives Level Shifted DC voltage from Front Panel Key presses. DC6 Main/Sub

AFCReceives the Main Tuner AFC or Sub AFC DC Voltage switched by I005. Used during channel change.

DC

7 Key In When the Power switch is pressed, Clock data from pin 21 is routed through Q014 back to this pin. Power is toggled On or Off.

Data

8 Not Used Not Used N/A9 Not Used Not Used N/A10 Main FV

DetReceives Composite 1 V Sync from I015 pin 4 for OSD Positioning. Sync

11 Sub FV Det Receives Composite 2 V Sync from I016 pin 4 for OSD Positioning. Sync12 DSP Busy Receives the Busy command from the Digital Surround Processor on the

Surround PWB. DC

13 DSP SO Control command to the DSP Unit for controlling Modes. Data14 DSP Dir Receives Digital Surround Processor Error information from the DSP unit on the

Surround PWB. Data

15 DSP SS Control command to the DSP Unit for controlling Modes. Data16 DSP SCK Digital Surround Processor Clock. Data17 DSP S1 Control command to the DSP Unit for controlling Modes. Data18 DSP ERR

MuteMutes Audio when a DSP Dir input is detected. (DSP Error). DC High

19 DSP Reset Resets the DSP module on the Surround PWB DC High20 Clock Sent to the Level Shift I014 then to both Tuners and the Flex Converter as a

timing signal. Also see pin 7. Data

21 Data Sent to the Level Shift I014 then to both Tuners and the Flex Converter to control each unit.

Data

22 Comp 1/2 FH Det

Either Component One or Two Horizontal Input from I005 through Q046. Used for OSD Display. And Auto Link

DC

23 AC In Receives Timing pulses for advancing the Clock. Received from the Smitt Amp Q008 and Q009

60Hz.

24 Main/Sub SD Det

Station Detection. Used during Auto Programming and when channels are changed to open AFC Loop. Switched by I005.

Sync

25 VDD Stby +3.3V generated by 0029. Main Microprocessor B+. DC26 CHL Clamp level High DC27 VRefFHS Use as a reference signal within the Microprocessor High Frequencies. DC28 CVBS0 Composite Sync used for Closed Caption Detection for the Main Tuner. Sync29 VSS Ground N/A30 CVBS1 Not Used. Composite Sync used for Closed Caption Detection for the PinP

Tuner. N/A

31 VREFLS Reference Signal used within the Microprocessor Low Frequencies. N/A32 CLL Internal function of the Microprocessor. N/A

Pin ID Function Active33 AVDD Stby +3.3V generated by 0029. DC34 COMP Internal function of the Microprocessor. DC35 IREF Internal function of the Microprocessor. DC36 VREF Internal function of the Microprocessor. DC37 OSD R Outputs Red characters for the Service Menu. Data38 OSD G Outputs Green characters for the Service Menu. Data39 OSD B Outputs Blue characters for the Service Menu. Data40 HALF

TONEControls the Translucency of the Main Menu Background. Low = Clear, Mid = Transparent, Hi = Gray.

Data

41 PDO Internal function of the Microprocessor. DC42 BVC0I Internal function of the Microprocessor. DC43 FE

ENABLE 2Front End Enable. Enables the reception of data from the Microprocessor by the PinP Tuner.

Data

44 FE ENABLE 1

Front End Enable. Enables the reception of data from the Microprocessor by the Main Tuner.

Data

45 V.MUTE Mutes Audio and Video through Q008 and Q010 to Sub Video and Surround PWB during channel change. High = Mute

DC

46 FC ENABLE

Flex Converter Enable Line. Allows the Flex Converter to receive commands from the Microprocessor.

Data

47 OSD X0 Reference Frequency for OSD. Determines the OSD Size. Data48 OSD X1 Reference Frequency for OSD. Determines the OSD Size. Data49 H SYNC Receives Horizontal Blanking pulses 3.3Vp/p for OSD positioning. Generated

from H Blk through Q006 H Blk

50 SD SELECT

Sent through Q030 to I015 for setting the internal selection switches. Hi = Main, Lo = Sub

DC

51 OSD BLK Outputs a pulse slight wider and in time with the OSD characters to clean up video where character will be displayed.

Data

52 TEST Use by the factory for internal test of the Microprocessor and to place in a specific set of criteria.

DC

53 Power ON/OFF

This output goes high when the Power Button is pressed for ON and Low for Off. DC

54 RESET Low when Power first applied then rises to a high of 3.3V. Received from I006. Resets the Microprocessor.

DC

55 VSYNC Receives Vertical Blanking pulses 3.3Vp/p for OSD positioning. Generated from V Blk through Q005

Data

56 P BLK Sent to the Rainforest IC IX01. Used to Mute the Video during Channel change, Child Lock, AVX selected with no input. Hi = Mute

DC

57 SDA3 Serial Data Sent to the Rear Audio Output IC IS11 on Surround PWB. Controls Volume, Bass, Treble, and Bal. Function of I2C.

Data

58 SCL3 Serial Clock Sent to the Rear Audio Output IC IS11 on Surround PWB. Used for Timing of Data. Function of I2C.

Data

59 SDA2 Serial Data Sent to U204, I701, IX01, IS03, IS05, IS10, IS08, IS01, I201 and I403. Function of I2C.

Data

60 SCL2 Serial Clock Sent to U204, I701, IX01, IS03, IS05, IS10, IS08, IS01, I201 and I403. Function of I2C.

Data

61 VDD Stby +3.3V generated by 0029. Main Microprocessor B+. DC62 OSC In OSC In (4MHz) Data

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DSPSCKDSPERR Mute

DSPIDSPRST

ZP94/95 CHASSIS MICROPROCESSOR DATA COMMUNICATIONS CIRCUIT DIAGRAM

IOO1 PSZ2

IX01Rainforest

RGBProcessor

2H Video PWB

60

59

SCL2

SDA2

PSD2Sweep Control

Surround PWB

Clock

DataU205FLEX

&PinP

PFC1

Enable

ClockData

FCENAble

1

2

17

16

SCL2

SDA2

SDA2

26

27

SCL22

1I201

Main VideoChroma33

34 SDA2

SCL2

SDA2

SCL2 U2043DY/C

PYC1

2

3

I0143.3V -> 5VLevel Shift

234

567

181716

151413

202146

151618

89

1211

1719

DSPSS

DSPSCKDSPERR Mute

DSPIDSPRST

PSU252631

PSU1

2

1

IS03FrontAudio

ControlSCL2

SDA2

IS08Center/LFE/

PinPAudio Control

IS10Center

Equalizer

IS05Front

Equalizer

SCL2

SDA2

SCL2

SDA2

IS01DAC3SCL2

SDA2

I403Sub

VideoChroma

PST1

Deflection PWB

Signal PWB

I701

91281113

DSPUnit

HC4051

PMU1

5

6I401

A/V SelectSCL1

34

33

SDA1

FCEN

SCL2

SDA2

SCL2

SDA2

10

11

12

4

5

4

5

17

16

17

16

14

15

3

2

SCL1

SDA1 IOO2EEPROM

56

SDA1SCL1

I004DAC2SDA1

SCL1

565

6SDA1

SCL1I003

DAC1

SCL3

SDA3

58

57

SCL3 IS11Rear

Audio ControlSDA3

Terminal PWB

3

4

5

4

DSPSS

DSPSCKDSPERR MuteDSPIDSPRST

FEENABLE2 43 17

U202Tuner 2

Pinp

16Clock

Data15Enable

6Enable

U201Tuner 1

MainFEENABLE1 44

5Clock

Data4

3334 SDA2

SCL221

9 ,3 ( -3G467(3#I*1>,=&,#!2G469-

3G46, - ( &*8+G46+(&:&+

G46-

#!#5!G46#5!

-#!(%!:89'G46

-#!3

3G46

-:G46- 3G46 +G469( ==&>-3G46

2$($G469(!:+(97R(SG46 %'-G46,7- (8$5034$55>IG46

34$56>IG464$56BCA7(>I(K

2#G2G46

7-G467-(7-9-G46

0#"709:(7

!(%#R$5B#'G46(7-5%;'8R$0G468R$034R0>G464R0,A7>

2#G2G46

%5'#R$#!-7G46>(3+.

3+G463H3+G46(2B+!(3H! *5$(%52G46B:1'G46 3+

2.

5%5'8R$34R0> G464R0,A7>

2#G2G46 .

3+

%5'#R$#!-7G46

.

3+G46(7B+!(3H! *5$(%7G46B:1'G46 3+

7

5%6'8R$34R0> G464R0,A7>

2#G2G46

3+

%5'#R$#!-7G46

3+G46

Right Ft. Audio

Left Ft. Audio

RX52

F. Spk Off

Q023

R192

I001

ZP-94/95 Series Chassis AUDIO and VIDEO MUTE Circuit(See also Surround Mute Circuit)

D027

PSD26

D028

D030D031

V. Mute 1

Micro Processor

V MUTE

PSZ2 IX01

25 FBPIn

"HV PROTECT"Horizontal Sweep Loss Det.

Vertical Sweep Loss Det.(From Deflection PWB)

IC01

FRONTL&RAudioOutput

Mute

CC03

4

2

R In R Out

L In L Out

CC04

11

13

2H Video PWB

Signal PWB

SBY +11V

45 A5V

CC01

CC02 7

12

Mute = Lo

DN08

R

N

1

5

C008

R007C009

DN09

PQS1

R

0

0

8

From I904Pin 3

AC PhotoCouplerAC Sig

Q00110 R010

D029

R193

R194

Q022

R029

R190 R191

R198

C070

V Mute 1

R195

Q024

R196

V Mute 2

DC04

ERRMuteQC02

RC04

QC01RC03

QC03RC07DC03

RC08CC08

RC09

CC09

QX18

12

6

H Blk FC

V Blk FC DX09

DX08

DX08

RX57

SW+9V

PSU1

6

8

9

7

DC02

DC01

14V Mute 2

From IS01 Pin 6

18 I0147

PSU2

14

13

ERR Mute

ERRMuteLevel Shift

Mute

AudioDSP

Surround PWB

V

M

u

t

e

R

0

1

1

"9&0#:09:(77-

34$5>IG46K

7-5G46(8!$(34!$6>I%'#!$9#!-G46(*%'(!&(#!G46-

7##9:(7=&A>9,-(=&&-

%0'#$%IG46

34$56>IG464$56BCA7(>I(K

2#G2G46

7-G467-(7-H G46

0(1>,B2.

7

G46) .

33!&G462.

7

:8HG4685%;'(8$5IG46

34$56>IG464$56BCA7(>I(K

2#G2G46

7-G467-(7-H G46

Prevents CRT Burn

ZP-94/95 SWEEP & AC LOSS DETECTION CIRCUIT

DN01

DN02

RN04

DN03

CN02

CN01

RN01V. Blk.

24V P/P

H. Blk.CN04

RN11

RN12

DN06

RN13

RN09

CN03 DN04 RN06

RN07Stby 11V

RN08

DN1111.6V P/P

SW+12V

SPOT

RN02

RN03RN05

RN10

VerticalBlanking

FromPin 11 I601

HorizontalBlanking

FromQ755 Emitter

QN05

QN03

QN04

QN02

QN01

IH02

1 Drive

High VoltageDriver IC

PSD3

2

I701

24DAC3

Horizontaland

VerticalDrive IC

R718HVcc

Spot Inhibit

DN12

When Vertical Drive isturned Off duringadjustment, I2C.

DN13

DN09

QN07

DN05

QN08

SW+12V

14RN15

StopsDrive

RN14

RH60

Stops High Voltage DriveSignals From beingproducedwhen Sweep Loss isdetected.

H DriveQN08

See Deflection PowerSupply Circuit

Diagram

RN10

SPOTPROTECT

DN14

DN15

C0

=#0*&

#$%;'G46

*

ZP-94/95 Series Chassis SURROUND MUTE Circuit(See also Audio Video Mute Circuit)

Mute

Sub Woofer

SurroundDSP

Module

PMU1

F. Spk Off

IS15

CENTERAudioOutput

Mute

CSJ5

4

2

C In C Out

C In C Out

CSJ4

11

CSJ3CSJ2 7

12

Mute = Lo

ERRMute

QS05RS04

QS04RS03

QS06RSF5

RSF6CSJ9

RSF7

CSK01

PSU1

6

7

14V Mute 2

PSU2

14ERR Mute

IS01

6

8

Mute

VMute

IS16

REARAudioOutput

Mute

CSM4

4

2

R In R Out

L In L Out

CSM3

11

CSM2CSM1 7

12

Mute = Lo

QS08RSJ5

QS09RSJ6

QS10RSJ7

RSJ8CSM8

RSJ9

CSM9

DS37

DS27

CENTER

DS26

VMute

Mute

CSpkOff

REAR R

REAR L

DS36

RSpkOff

DS35

DS34

QS20

DS24

DS48

DS25

DS49

SD50

HiFi L

QS17

DS44

SD47

HiFi R

QS16 SD46

DS45

6

6RSpkOff

F. Spk Off

%;'

,B7-!G4697-!

=H8G46

3!,4!.9790#)8 G46& B+! G46& -!3G468G46& >IG46:353G462G46%93

I>3'G46& G46!==&>-(#9!35G46I!:+(56G46&3!

73+G46G46I>=O9

K9)*G46

%#

Main Y/Video

IJ01

PinP VY

PinP C

S-Y1S-C1

PinP TUNER (Mono)Always PinP

ZP-94/95 SERIES CHASSIS VIDEO SIGNAL PATH (Main & Terminal)

I401

53

49

Lum/Audio Selector IC

23

103V

VOut1

U202

Avx 3 In

PinPVide

o

17

15

60

TerminalPWB

Signal PWB 1 of2

Front Control PWB

19

MainVideoNTSC

Aux Input 3

V1 810

AuxInputs

U201Main Tuner

63Q205

53

S-Y3S-C3 19

S-3 In

S-1 In12

S-Y2S-C2

V2 13S-2 In5

YIn1

2Line

CombFilter

V In

Y Out

C Out

S Det.

S Det.

S Det.56

PinP Yout2

18

Q206

14TV1V

TV2V

4

1

351CIn1

41Vout3Q409 Monitor Out

32PinP C Cout2

39

37

Q410 Q411

Y/S Monitor Out

Yout3

Cout3

Q405

Q404

I40340

6

V3V

PST1

Q403

Q406

Q408

374647

YR-YB-Y

See Component Signal FlowDiagram for Continuation

44Q402

47Q401

V/Yout2

Cout2

13

9

Main C

PST25

7

I20140

6

9

7

Q216

Q213

Q235

Q214

Main C

Main Y/Video

PFT

Sub Video Route

PYC1

11

7

Main Y/Video

Main C

MainVideo/

Chroma

Signal PWB 2 of 2

Terminal PWB

5S-CIn

38 1

QJ09

QJ106

IJ02

QJ11QJ12

8 25 QJ08 QJ07QJ06

QJ05 1025

QJ04QJ03

QJ02QJ01

3 Line Comb Filter

Video In

"C$2

,*&62-%77' ;63%757' ;$7

,B 0)7%C'

,B $)7%!'

,B 575

,B )75%C'

,B 6)75%!'

,B 76!,B )76%C'!,B %!'3 07C>5-7)7%C'68C! !>5)7%!'68C! 67- C>6)7%C'- 6!>6)7%!'- 6 7# C> !> 6

')2=9>7C ! 6C> !>#$G46

,*,"42!5%C!33!'#$

Sub B-Y Cb Out

Sub Y Out

Sub R-Y Cr Out

Main B-Y Cb Out

Main Y Out

Main R-Y Cr Out

ZP-94/95 SERIES CHASSIS COMPONENT SIGNAL PATH (Main & Terminal)Lum/Audio Selector IC Terminal PWB

Component 1Inputs

Cr/Pr

Cb/Pb

Y

Component 2Inputs

Y

Cb/Pb

Cr/Pr

30

22

Comp 2 forAuto Link

Comp 1forAuto Link

161

3

1114

5

98

6

I4061

21

21

2

Q439

Q438

Q437

Q434

Q435

Q436

I401

Y

Cb/Pb

Cr/Pr Q427

Q426

Q425

71

21

93

19

115

15

I2051

21

21

2

Q232

233 Q23413Q229

Q230 Q23111Q226

Q227 Q2289

PST2

13

145

86

I4071

21

21

2

Y

Cb/Pb

Cr/Pr

17

21

39

19

511

15

I4041

21

21

2

Q416

Q417 Q418Q419

Q420 Q421Q422

Q423 Q424

PST2

5

4

3

U205PFC1

19

17

15

4847

37

I403

19

18

17

Sub B-Y Cb Out

Sub Y Out

Sub R-Y Cr OutSUB PICTURE

MAINPICTURE

FLEX CO

NVERTER

I2014847

37

Terminal PWB

Signal PWB

Signal PWB

11

16

Cr/Pr1

Cr/Pr2

Cb/Pb2

Y2

Y1

9

Q440

Q441

Q442

16

18

20

PFC215

17

19

PSZ22H Y

2H B

2H R

2H Y

2H CB

2H CR

PZC 2H Video PWB

To CRT PWB

IX01

Rainforest

Y2 In

CB/Q

CR/I

5242QX36

3G

5343QX31

1R

QX21

5141QX41

5B

YCBCR to YIQCONVERTER

Q22~27 & 54,55

SUPERMATRIXIX03, 04

IX02YCBCR/YIQSELECTOR

See Chroma After Flex Converter Sig. Diagram

Q414Q413

Q412

2"C$27;

CB/Q

CR/I

ZP-94/95 SERIES CHASSIS CHROMA AFTER FLEX CONVERTER SIGNAL PATH

1820

PFC2

1719

PSZ2

2H B

2H R

2H CB

2H CR

IX03QX25

QX23

QX22

2H CB

2H CB

2H CR

2H CR

QX24

QX54

QX26

QX55

QX27

2

H

C

R

2H C

B

2

34

5

61

SW9V

IX04

5

I

Q

13

2

4

11

IX021

21

2

141

QX52

QX53 Q

II

Q16

2H CB

5152

IX01

53

U/Q In

V/I In

Rainforest ICRGB

Processor

YCBCR/YIQSelector

SUPER MATRIXYCBCR YIQCONVERTER

Q

I

I

Q

F

L

E

X

C

O

N

V

E

R

T

E

R

U205

Signal PWB 2H VIDEO PWB

SW9V

2;C$27;

: *.;& -&)CB)CC#5$3&)CB)CC#$G46!3

%-3'G46!

52%6G46

TV1V

TV2V

S-Y1S-C1

PinP TUNER (Mono)Always PinP

ZP-94/95 SERIES CHASSIS SYNC SIGNAL PATH

I401Lum/Audio Selector IC

23

103V

VOut1

U202

Avx 3 In

PinPVideo

17

15

60

Terminal PWB

Signal PWB 2 of 2

Front Control PWB

19

MainVideoNTSC

Aux Input 3

V1 810

AuxInputs

U201Main Tuner

63Q205

53

S-Y3S-C3

19S-3 In

S-1 In12

S-Y2S-C2

V2 13S-2 In5

S Det.

S Det.

S Det.

18

Q206

14

V3V

PST1

PFT

3

PST2

Sub Video

VOut2 3

Main Y/Video

I005Z1

Z0

3

5

Q210

Q208

I001

Q019 Q0184

4

Main SubSD Det

I003

53

44

Q403

Q402

Q02128

Main for CCD

30

Sub for CCDQ031

Q017

2Q016

Y In Det

SDA1

SCL1

SCL1

SDA1

2

3

15

14

SIGNAL PWB 1 of 2

Composite 2

Composite 1

I0151 4 10

I0161 4 11

PST1

8

9

Q434

Q437

Q431

Q433

Component 1 Y

Component 2 Y

Sync Sep Comp 1

Sync Sep Comp 2

Composite 3

Aux Input 1

Aux Input 2

Also, see Main/Component SyncSeparation Circuit Diagram

MicroProcessor

Lo = MAINHi = SUB

Lo

Hi

C$27;

,*&627>%3'7#$$-3#!

#$$3!!8G467C>5-7)7%C'#$$-3#!

#$$-!!8G467#!C!!8%0$'9:+G467#!5C!!8%0$'9:+G46

2=)>!%C'#$!#!G46!5%C'#$;!5#!G46

*&.2&7

#$$#!!78G462.

#$$-3#!G46

*&+2 7

#$$#!!578G462.

#$$-3#!G46

**.94#$$8%8':Q-(2Q3(%'637%#'-7%#'3-88%>'5!2%#'!52%#'!528%>'539!%#'6-9!%#'3-9!%>'

**&93 6$!!8G46- 50!!8G46!

/$(#$G46!5

/(#$;G46!5.

/55(#$$G468$#$$3FH!2G46-385#$$G46

,*+92&42 C;G46

SHW

I406 See VideoSignal PathV.Out

H.Out

I409

ZP-94/95 SERIES CHASSIS MAIN/COMPONENT SYNC SEPARATION SIGNAL PATH

See ComponentSignal Path (Main)

PTS2

Q223

I207

1

4

2

V.Sync Out

H.Sync Out

2

3

I2021

2

1

2

1

I2035 6

I201MainVideo/

Chroma

13

14

Q224

5

10 11

4

5

12 13

10

9

2 1

4 3

U2058

7

15

14

PTS2

3

1Sub H. Sync

Sub V. Sync

I4051

2

1

2

15

10

9

4

Q4282

I403

4 2

14

40

13

H.Out

V.Out

3

I4084

2

5

Q415Q4421

TERMINAL PWB

SIGNAL PWB

Flex C

on

verter

MHW

MVW

SVW

Sub Video/Chroma

Select 3Hi : Main NTSCLo : Main Component

Select 4Hi : Sub NTSCLo : Sub Component

Select 3

Select 4

SyncSep.

SubSyncSel.

Select 4

1

Q425

9

1

I4071See Component

Signal Path (Sub)

Select 340

See VideoSignal Path

16

18

20

SeeComponentSignal Path

2C$27;

*-92C257>

*'2#5$

*'#

>%-2(-7(32(37'H! G46-23-2,H! -73-7,H! 3232,H! 3737,H! *.J*.090

3!,4!.090

CX31

SignalPWB

ZP94/95 CHASSIS A.B.L. CIRCUIT DIAGRAM

DX02

RX37

CX19

45

3

B+

ToFocus

CH25

C

RH59RH58

High Voltage B+ 120V V2

Sw +12V

SW +9VRX33

RX35

IX01

Rainfo

restIC

ABL

SDA2

PSZ2

SDA216

To Anodes

ABLTo QH01Collector of Horz.Output Transistor

2H VideoPWB

or

Signal SubPWB

Deflection PWB

Clamp

ABL Pull-UpResistors

As Brightness goes Up, ABL Voltage goes Down. (Inverse Proportional)

[ Cu

rrent Path

]

QX13RX34

RX36

5

27See uPData

SignalPath

DH33

RH56Deflection B+ 120V V1

PSD3

1

DX03CX32

CX34PSZ1

SCL2SCL217 28

TH01

RH67

LH03

CH31

RX32

2$62=6>C$27;9B: 9B:3+(2$G469B:

)&20&2G46

BA5$7%75'8 6(38(3!66H &

Prevents CRT Burn

ZP-94/95 SWEEP & AC LOSS DETECTION CIRCUIT

DN01

DN02

RN04

DN03

CN02

CN01

RN01V. Blk.

24V P/P

H. Blk.CN04

RN11

RN12

DN06

RN13

RN09

CN03 DN04 RN06

RN07Stby 11V

RN08

DN1111.6V P/P

SW+12V

SPOT

RN02

RN03RN05

RN10

VerticalBlanking

FromPin 11 I601

HorizontalBlanking

FromQ755 Emitter

QN05

QN03

QN04

QN02

QN01

IH02

1 Drive

High VoltageDriver IC

PSD3

2

I701

24DAC3

Horizontaland

VerticalDrive IC

R718HVcc

Spot Inhibit

DN12

When Vertical Drive isturned Off duringadjustment, I2C.

DN13

DN09

QN07

DN05

QN08

SW+12V

14RN15

StopsDrive

RN14

RH60

Stops High Voltage DriveSignals From beingproducedwhen Sweep Loss isdetected.

H DriveQN08

See Deflection PowerSupply Circuit

Diagram

RN10

SPOTPROTECT

DN14

DN15

55"06(7#"7#:(,4I$(73

3278 #!#2$5 &I8I6G46,(#!

27 42$0(278 G469( !&3(

G46

0

G46G46G46

DigitalConvergence Unit

I601

DP29+B 120V Green LED

QH01

PCB PDF

RH44

High Voltage ADJ.RH44

TP91

PMB

PMRPMG

YOKE PLUGS

SK01:SERVICESWITCH

PSD1

CONVERGENCEHEAT SINK

FBT

TH01 REAR

VIEW

R630V.SizeAdj.

R683H.SizeAdj.

R686H.Size

Adj. HDDP37

Red LED

DP01

IP01

PQD1

Q701

D752 Q777

Q657

D657

D656

IK01

QK01

QF06

PCGPCR

PQD2

PDC1

IK04 IK05

PSD1 PSD2 PSD3

G46G46G46

QS4

U2043D/YC

REARVIEW

U205FLEXConv.andPinPUnit

U201MainTuner

U202PinP

Tuner

PP1

I001

PFS

SURROUND PWB

2HVIDEOPWB

TERMINAL PWB

MICROPROCESSOR

I010

I011

I012

PR

PL

IC01

DIGITAL BOARDHC4051

I007

LINE COMBPWB

G46G46G46

DAG

P851R879

P852Cathode

GREEN

E831

P801R829

P802Cathode

RED

BLUE

E8A1

P8A1

PTSB

P8A2CATHODE

PVB

GND

SHORT TOKILL THE

COLOR

PRV

GND

SHORT TOKILL THE

COLOR

PGV

GND

SHORT TOKILL THE

COLOR

PTSR

E801

W801

W801

PTSGDAG

DAG

G46G46G46

D903IC POWER

MONITOR RED

T901

SWITCHINGTRANSFORMER

REARVIEW

PQD2PQS1PQU1

PQS2 PQU2

D949STBY +11VGREEN

D931SW +5VGREEN

D927STBY +7VGREEN

D912Audio F SW +29VGREEN

= RED or GREEN LED USED FOR VISUAL TROUBLESHOOTING

D901

I901

S901

S904

S903

S902

PQD1

PQS4

PA

F9016 Amp

I906

I907

I905

1 9 1 10

1 11

7 1

1 8

2 1 2 1

1

3

MENU

PFJ

PFV

SM09

SOURCE

VOL -

VOL +

CH -

CH +

POWER

G46G46G46

No Raster

Is Power LED on Control Panel on?

Is Red LED Blinking on SMPS?

Find which LED fails to light or dims first on SMPS.D949-SMPS STBY +11v

Check D918,I906,I007,I009D931-SMPS SW +5v

Check D918,I907,I011,I012D927-SMPS STBY +7v

Check D918,I905,I008,I010D912-SMPS SW +29v (Audio)

Check E992,D910,IC01

Turn off power wait (3) seconds, turn ON carefullyinspect all Green LEDs on SMPS.

Did all 5 LEDs turn off at the same time?Is voltage at pin(4) of I901 14v-18v?

Check D904,R905,R906,C907,F901,R902No

Check I901,D961,R918,R919,Q901Replace E991

Has protector E991 blown?

Does raster appear with G and K ofQ905 shorted?

Replace I901Check R918,R919

Yes

No

Yes

Replace Q905

Check Q905,D921,D908,I902,Q902,D923

No

No

Yes No

Is Click of Relay heard

Is the voltage at pin(51) and (33) of I0013.3v?

Check Q029,D035,L004

Is voltage at pin(23) of I001"AC Clock" in?

Is Voltage at pin(53) of I001 low? Is the voltage at PQS2 pin(1) 7volts?

No

No

Check I001 pin(54)Does reset occur?

Replace I006

Replace X001

Check I002Replace I001

Check I001 pin(63)Is 1.6v present?

Check I001 pin(62)is 4mhz present?

Check Q008,Q009,I904,D909

Check Q003,Q004,D922,S901,Q002 No

Yes

Yes Replace I001

No

D927-SMPS STBY +7vCheck D918,I905,I008,I010

Yes

Yes

No

Yes

No

No

Yes

Yes

No

No

Yes

Yes

Yes

Yes

To page ____Inspect Red LED (DP37) on Deflection, Blinking?

Check EP98,DP11,Q777,QH01,TH01,DH11, ondeflection module.

Turn off power wait (3) seconds, turn ON ,carefullyinspect Green LED.

Does the Green LED tun off at the same time?Is voltage at pin(4) of IP01 14v-18v?

Yes

Check PQD1 for 120vac

CheckVR923 on SMPS

Has protector EP01 blown?

Check IP01,DP04&5RP10,RP11,RP12

Replace EP91

Check DP04&5, Rp02&3,CP05RP10,RP11,RP12

Does raster appear with G and K ofQP01 shorted?

Check Q777,QH01,T751,T752

Are voltages of both ends of T751(primary side)normal?

Is the base of Q751 normal?

No

Check T751,R754,R755

Check I701 pin(15) H-out,pin(8) Hvcc,QP04,DP35,DP36

Check QP01/ Replace QP01Yes

No

YesNo

Yes

YesNo

Check IP01,RP10,RP11,RP12

No

Yes

No

No

Yes

Yes

No

G46G46

!"#$%&'()%*%*+ ,),','G46-./0 1G46000

/G46 "#-//.02"*3//.//04G4610 /0/562/.G46

7/2"89 89/*3G4600:;9 00"#-059892"G4689/

DTV at 480pin 4:3 Aspect Ratio 4:3 ASPECT RATIO

OF IMAGE DISPLAYIN 4:3 SCREEN

D3FC

NTSC at 480iin 4:3 Aspect Ratio(DVD)

NTSC at 270iin 4:3 Aspect Ratio (Broadcast or Cable)

480p

480pD3FC

1080i

*AVSL of1080i Lines

*AVSL of480p Lines

DTV at 480i 480p 720p

in 16:9 Aspect Ratio

480i480p720P

D3FC

16:9 ASPECT RATIO OFIMAGE DISPLAY IN 4:3

SCREEN

*AVSL OF 360pLinesWatchable Picture

480pLines

480p

DIAGRAM A

DIAGRAM C

DIAGRAM B

DTV AT 1080i IN16:9 ASPECT RATIO

1080iD3FC

16:9 ASPECT RATIO OFIMAGE DISPLAY IN

4:30SCREEN

1080i*AVSL of 810iLinesWatchable Picture

1080iLines

SignalACCEPTED Image

DISPLAYED

SignalACCEPTED

ImageDISPLAYED

ImageDISPLAYEDSignal

ACCEPTED

*AVSL:Active VideoScan Lines

Lg Zenith C-line Zp94 95 Projection Tv Training Manual 2000 [Et]

Documents

Transcript of Lg Zenith C-line Zp94 95 Projection Tv Training Manual 2000 [Et]