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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
AuthorisedSignature:
OriginatorSignature
TECHNICALBULLETIN
Page: 1
Application: Reference ( ) Only Defected Sets ( X) Whole Sets ()
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
IRIS Code InformationFor Warranty Claims
Document Ref: TB141Issue No: 01Model: CI5933/6230/
7230/6229
Product Group: CTVDate: 30.4.98
AuthorisedSignature:
OriginatorSignature
TECHNICALBULLETIN
Pages: 2
Application: Reference ( ) Only Defected Sets ( X) Whole Sets ()
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
IRIS Code InformationFor Warranty Claims
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
Product Group: CTVDate: 16.6.98
AuthorisedSignature:
OriginatorSignature
TECHNICALBULLETIN
Pages: 1
Application: Reference ( ) Only Defected Sets ( X) Whole Sets ()
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
IRIS Code InformationFor Warranty Claims
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
AuthorisedSignature:
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
AuthorisedSignature:
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
AuthorisedSignature:
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
AuthorisedSignature:
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
AuthorisedSignature:
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
AuthorisedSignature:
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: TB83
Issue No: 01
Bulletin Type: Information
Model: CI5344ANSCT 12A Chassis
CI6844 / 5944SCT 12B Chassis
Product Group: C.T.V.
Date: 04.04.97
AuthorisedSignature:
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
AuthorisedSignature:
OriginatorSignature
TECHNICALBULLETIN
Page: 1
Application: Reference ( ) Only Defected Sets ( ) Whole Sets ()
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
IRIS Code InformationFor Warranty Claims
Document Ref: TB90Issue No: 01Model: CI5079Z/T
Product Group: CTVDate: 11.8.97AuthorisedSignature:
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
IRIS Code InformationFor Warranty Claims
Document Ref: TB95Issue No: 01Model: CI5373T
Product Group: CTVDate: 5.9.97AuthorisedSignature:
OriginatorSignature
TECHNICALBULLETIN
Page: 1
Application: Reference ( ) Only Defected Sets ( ) Whole Sets ()
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
IRIS Code InformationFor Warranty Claims
Document Ref: TB110
Issue No: 1Model: TVP5050
TVP5350
Product Group: TVCRDate: 8.10.97AuthorisedSignature:
OriginatorSignature
TECHNICALBULLETIN
Page: 1
Application: Reference (* ) Only Defected Sets ( ) Whole Sets ()
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
IRIS Code InformationFor Warranty Claims
Document Ref: TB111
Issue No: 1
Model: TVP3350
Product Group: TVCR
Date: 8.10.97
AuthorisedSignature:
OriginatorSignature
TECHNICALBULLETIN
Page: 1
Application: Reference (* ) Only Defected Sets ( ) Whole Sets ()
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
IRIS Code InformationFor Warranty Claims
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