TECHNICAL CI5944/6844 BULLETIN - free-vk.t-com.hrfree-vk.t-com.hr/kmirkov2/samsung_bulletins.pdf ·...

Document Ref: TB124

Issue No: 01

Model: CI5944/6844CI5344(SCT

12A/B)

Product Group: CTV

Date: 18.12.97

AuthorisedSignature:

OriginatorSignature

TECHNICALBULLETIN

Page: 1

Application: Reference (* ) Only Defected Sets ( ) Whole Sets ()

Subject: CHANGE OF IC201 (ONE CHIP) TYPE

Symptom: New Parts Supply

Cure: When replacing IC201, identify chip type as described and order using the part numbers in the table below.

TDA 8375BATHCODE DATECODE 1X

N1 VERSION

MASK NUMBER ↑↑↑↑ TDA 8375 BATHCODE DATECODE 3Y

N3 VERSION

MASK NUMBER ↑↑↑↑DEVICE TYPE VERSION PART NUMBER CHASSIS

TDA8375 N1 1204-000443 SCT12B

TD8375 N3 1204-001193 SCT12B

TDA8374A N1 1204-000467 SCT12A

TDA8374 N3 1204-001190 (French only) SCT12A

TDA8374A N3 1204-001191 SCT12A

Changeover from N1 ! N3 occurred August 1997Serial Number 3JCH8xxxxx

Document Ref: TB126Issue No: 01Model: CI3373T

SCT11D(00 TO 01)

Product Group: CTVDate: 5.1.98AuthorisedSignature:

OriginatorSignature

TECHNICALBULLETIN

Page: 1

Application: Reference ( ) Only Defected Sets ( X) Whole Sets ()

Subject: BUZZ/WHISTLE ON SOUND

Symptom: Intermittent buzz/whistle on sound

Cause: Inter modulation distortion traced to Micom Crystal which oscillatesat 12 MHz, a harmonic of which is beating with the SIF via a groundloop.

Cure: Remove C907 and fit a 104 (50v) ceramic capacitor as shownIn the diagram.

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

2 545 C907 DPR Y I

IRIS Code InformationFor Warranty Claims

DocumentRef:

TB127

Issue No: 01Model: CI5344ProductGroup:

CTV

Date: 27.1.98AuthorisedSignature:OriginatorSignature:

TECHNICALBULLETIN

Page: 1

Application: Reference ( ) Only Defected Sets (√ ) Whole Sets ( )

Subject: FAILURE OF FRAME IC (IC301)

Symptom: Frame Collapse

Cause: Tube Flash Over

Cure: Replace frame IC301.Solder Zener Diode onto the underside of PCB as shown.

Part number 0403-001039. 56V Zener Diode.

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

1 316 EY26 DFL Z IIRIS CodeInformation

For WarrantyClaims

EY26

C 301

R 302

V2 V1

NON-CONDUCTIVETAPE

Document Ref: TB139Issue No: 01Model: CI5079/3373

5373SCT11B/D

Product Group: CTVDate: 9.2.98


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TECHNICALBULLETIN

Page: 1


Subject: HIGH B+ IN STANDBY MODE

Symptom: 125V rail at approx 180V in standby (should be 140V)

Cause: Due to a mismatch in the resonubber circuit.

Cure: C852 should be changed to a polyester type 182 50VPart No: 2301-000111

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

1 110 C852 PSU Y I


Document Ref: TB141Issue No: 01Model: CI5933/6230/

7230/6229



OriginatorSignature

TECHNICALBULLETIN

Pages: 2


Subject: FAILURE OF FRAME OUTPUT CHIP, IC301 (TDA 3654)

Symptom: Partial or complete frame collapseTB141

Cause: Noise on V1 Line of TDA 3654

Cure: 1. Remove previous mods2. Fit 2 parts as illustrated.

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode


V1 V2

C305

R316

R305

R321

R317

C303

IC401

C306

C302

IC301 TDA3654

#5 #1 #3

R303

BEFORE

V1C305

R316

R305

C302

IC301 TDA3654

#1

R303

AFTER

#5 #3

C306

IC401

V1

REPLACE PJ28 ->10uh

ADD 470nF CAP FIT CLOSE TO IC PIN #5

PJ 28

NO

12

CCT REFBEFORE AFTER REMARKS

SPEC SPECCODE NO CODE NO

ADD POLYPJ28

100V 470nF10UH AL05

2305-0004072701-001040

Document Ref: TB142Issue No: 01Model: CI5944/6844

SCT12 BCHASSIS



OriginatorSignature

TECHNICALBULLETIN

Pages: 1


Subject: FAILURE OF F801 MAINS INPUT FUSE

Symptom: Dead set (no standby LED)

Cause: F801 o/c

Cure: Replace F801 with 4A anti surgeNew part number: 3601-000-279Replace F801 on all units for repair regardless of fault

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

2 111 F801 PSU R A


V1 V2

C305

R316

R305

R321

R317

C303

IC401

C306

C302

IC301 TDA3654

#5 #1 #3

R303

BEFORE

V1C305

R316

R305

C302

IC301 TDA3654

#1

R303

AFTER

#5 #3

C306

IC401

V1

REPLACE PJ28 ->10uh

ADD 470nF CAP FIT CLOSE TO IC PIN #5

PJ 28

NO

12

CCT REFBEFORE AFTER REMARKS

SPEC SPECCODE NO CODE NO

ADD POLYPJ28

100V 470nF10UH AL05

2305-0004072701-001040

Document Ref: TB147

Issue No:

Model:

CHASSISS15A

CI14F1TCI3373CI5373

Product Group: CTV

Date: 30/03/99


OriginatorSignature

TECHNICALBULLETIN

Page: ONE

Application: Reference ( ) Only Defected Sets (X) Whole Sets ( )

Subject: DISTORTED SIBILANCE

Symptom: Distorted sibilance on certain programs

Cause: C614 out of tolerance

Cure: Replace C 614 with new type – part no. 2201-000823

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

2 530 C614 APA Y I

Document Ref: TB148

Issue No:

Model:

CHASSISSCT 13B

CI 3373CI 5373CI 5079

Product Group: CTV

Date: 30/03/99


OriginatorSignature

TECHNICALBULLETIN

Page: ONE

Application: Reference ( ) Only Defected Sets (X) Whole Sets ( )

Subject: WHISTLE ON SOUND

Symptom: Whistle on sound. Varies with volume.

Cause: Inter modulation distortion traced to micom crystal.

Cure: Fit insulated wire link as shown. (From link J190 to C911-ve).

ONE CHIP IC201 MICOM IC901

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

1 542 C911 DPR Y I

J190 + C911 -

Document Ref: TB152Issue No: 01

Model:

CI-3373CI-5079CI-5373CI-5073

SCT11B,PIB,SCT11D

CHASSIS

Product Group: CTV

Date: 15.07.99


OriginatorSignature

TECHNICALBULLETIN

Page: 1 OF 1

Application: Reference ( ) Only Defected Sets ( ) Whole Sets ()

Subject: POWER SUPPLY FAILURE/INT. FAILURE OF Q401

Symptom: Dead.

Cause: DZ801 Short Circuit/Q401 Short Circuit.

Cure: Replace the following PSU parts. Check/replace Q401 as necessary.

DZ801 – 0403-000691IC801 – AA13-20004PHC801 – AA13-20004MF801 – 3601-000261L803 – AA27-90001GC803 – 2303-000163C851 – 2401-002280C852 – 2301-000111(Q401 14” – 0502-000294 20”-21” – 0502-000295

The chassis number is printed underneath the FBT on solder sideof PCB.

Condition Code Symptom Code Circuit Ref SectionCode

DefectCode

RepairCode

1 110 DZ801 PSU Q A

IC801 - Q A

HC801 - Q A

F801 - R A

L803 - R A

C803 - Q A

C851 - Q A

IRIS Code Information for WarrantyClaims

C852 - Q A

Document Ref: TB153Issue No: 01

Model:CI-14F1Z/TCI-20S10BZCI-20S20BTCI-21S20BTCI-5079Z/TCI-5373Z/TCI-3373Z/T

S15A,SCT13BCHASSIS

Product Group: CTV

Date: 26.07.99


OriginatorSignature

TECHNICALBULLETIN

Page: 1 OF 1

Application: Reference ( ) Only Defected Sets ( ✔ ) Whole Sets ()

Subject: FAILURE OF IC801 (KA3S0680RF)

Symptom: Dead Set.

Cause: C804 incorrectly inserted.

Cure: De-solder and re-fit C804

Replace IC801 – Part No.1203-001494

Condition Code Symptom Code Circuit Ref SectionCode

DefectCode

RepairCode

1 110 IC801 PSU A A

C804 PSU T D

Document Ref: TB155Issue No: 01Model:Chassis

S15A,SCT13B,

S51A

Product Group: CTV

Date: 11/11/99AuthorisedSignature:

OriginatorSignature

TECHNICALBULLETIN

Page: 1

Application: Reference ( ) Only Defected Sets (!) Whole Sets ( )

Subject: FAILURE OF IC801 (PSU)

Symptom: No Power

Cause: Surge Flow into VCC Terminal

Cure: Fit a 30v, 0.5w Zener from Pin 3 (IC801) to ground.

Part Number 0403-000555

The chassis number is printed under the F.B.T. (on solder side)

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

1 110 IC801 PSU Q A

IRIS CodeInformation ForWarranty Claims

Document Ref: TB82

Issue No: 03

Bulletin Type: Information

Model: CI3373, CI5373,CI5079

Product Group: C T V

Date: 29.1.98


OriginatorSignature

TECHNICALBULLETIN

Page: 1

APPLICATION: Reference ( ) Only Defected Sets (√) Whole Sets ( )

Subject: Power Supply Failure SCT11B Chassis

This Bulletin has been re-released due to changes in the versions of availablecomponents.

Symptom: Dead

Cause: DZ801 Short Circuit

Cure: Replace the following parts.

Circuit Reference Part Number - Version

DZ801 0403-000691

IC801 AA13-20004P - Ver C

HC801 AA13-20004M - Ver C

F801 3601-000261

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

1 110 D2801 PSU Q A

IC801 PSU Q A

HC801 PSU Q A

F801 PSU R AIRIS Code InformationFor Warranty Claims

Document Ref: TB83

Issue No: 01

Bulletin Type: Information

Model: CI5344ANSCT 12A Chassis

CI6844 / 5944SCT 12B Chassis

Product Group: C.T.V.

Date: 04.04.97


OriginatorSignature

TECHNICALBULLETIN

Page: 1

Subject: New Crystal Types Used In Production X201, X202

Symptom: The new Crystals are not directly compatible with the old type.The old Crystals are marked KDSI or PHILIPSThe new Crystals are marked KONY

Cause: When replacing KDSI or PHILIPS Crystal to KONY, the ParallelResonance Capacitor must be changed to match the Crystaltype.

Cure: X201 and C218 go together as a pair and similarlyX202 and C219 are a pair.

CircuitReference

Part Number Description

X201 2801-000231 3.579545 MHz 30 ppm

X202 A1280-0173 4.433619 MHz 30 ppm

C218 2201-000611 Ceramic 56 Pf, 5%, 50 V

C219 2201-000139 Ceramic, 100 Pf, 2%, 50 V

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

X201 CPA A A

X292 CPA A A

C218 CPA A A

C219 CPA A AIRIS Code InformationFor Warranty Claims

Document Ref: TB86

Issue No: 01

Model: CI-5373T,CII-5079T

Product Group: CTV

Date: 08.07.97


OriginatorSignature

TECHNICALBULLETIN

Page: 1


Subject: INTER MODULATION DISTORTION

Symptom: Buzz / Whistle on sound.

Cause: Inter Modulation Distortion traced to Micom Crystal whichOscillates at 12 MHz, a Harmonic of which is beating withthe SIF via a Ground Loop.

Cure: Locate C907. Remove the Capacitor and fit in position C907A.

DISTRIBUTION:

Clive BinghamIan MerringtonMike StevensonMalcolm JonesZdena BestColin BrewerJudy StevensonDavid Castle

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

1 540 C907 DPR Y K


Document Ref: TB90Issue No: 01Model: CI5079Z/T


OriginatorSignature

TECHNICALBULLETIN

Page: 2

Application: Reference ( ) Only Defected Sets (√) Whole Sets ()

Subject: CRT ESD PROBLEM

Symptom: Cyclic start up from cold (can be intermittant).Frame collapse. (Due to faulty frame IC).

Cause: Electrostatic discharge through the frame IC causing Micom toreset.

Cure: Fit an insulated wire link between EY23 and EL07 (See diagram).

This modification is for the SCT 11B chassis version 04/05 only.See diagram for identification.

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode

2 11B EL07 DFL U 1


Document Ref: TB95Issue No: 01Model: CI5373T


OriginatorSignature

TECHNICALBULLETIN

Page: 1


Subject: CHANGE OF MICOM TYPE

Symptom: New parts supply. Original Type - SAA 5290ZP-026 (Part No: AA13-30005A)

New Type - SAA 5290ZP-042 (Part No: AA13-30010T)

Cause: When fitting new type Micom the following adjustment shouldbe carried out in Factory Mode to change the option BYTE.

Cure: Switch set on and key in the following sequence using theremote.

STBY, P.STD, HELP, SLEEP, STBY

Select option BYTE from the Factory Menu and changefrom "5D" to "CA".

Note: The IRIS information will depend upon the fault found.

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode


Document Ref: TB110

Issue No: 1Model: TVP5050

TVP5350

Product Group: TVCRDate: 8.10.97AuthorisedSignature:

OriginatorSignature

TECHNICALBULLETIN

Page: 1


Subject: CHASSIS CHANGE FROM SCV11A TO SCV11D

Symptom: The circuit and some major parts have been changed

Cause: Chassis change from SCV11A to SCV11D. The chassis version is marked underneath F.B.T. on print side

Cure: The changes are listed below.

Old (before) Parts (SCV11A) New (changed) Parts (SV11D)LocationNo.

SEC Code Description SEC Code Description

IC

Tuner (1)Tuner (2)FBTIC-MCUIC-Video

AA40-10002MAA40-10002BAA26-30004EAA13-30011L1201-000539

TECC2989PA19CTECC2889PA19CFTK20R008CCXP85332A-196STDA6101Q

AA40-10005NAA40-10005MAA26-30001YAA13-30015Y1201-001159

TECC2979PK28A(S)TECC2879PK28A(S)FSV20A001CXP85332A-319STDA6107Q

DDDDD

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode


Document Ref: TB111

Issue No: 1

Model: TVP3350

Product Group: TVCR

Date: 8.10.97


OriginatorSignature

TECHNICALBULLETIN

Page: 1


Subject: CHASSIS CHANGE FROM SCV11B TO SCV11D

Symptom: The circuit and some major parts have been changed

Cause: Chassis change from SCV11B & C to SCV11D. The chassis version is marked underneath F.B.T. on print side

Cure: The changes are listed below.

Old (before) Parts (SCV11B & C) New (changed) Parts (SV11D)LocationNo.

SEC Code Description SEC Code Description

IC

Tuner (1)Tuner (2)IC-MCUIC-Video

AA40-10002MAA40-10002BAA13-30011L1201-000539

TECC2989PA19CTECC2889PA19CCXP85332A-196STDA6101Q

AA40-10005NAA40-10005MAA13-30015Y1201-001159

TECC2979PK28A(S)TECC2879PK28A(S)CXP85332A-319STDA6107Q

DDDD

ConditionCode

SymptomCode

CircuitRef

SectionCode

DefectCode

RepairCode


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