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Document Ref: TB124
Issue No: 01
Model: CI5944/6844
TECHNICAL Product Group:
CI5344(SCT
12A/B)
CTV
BULLETIN Date: 18.12.97
Authorised
Signature:
Originator
Signature
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 8375
BATHCODE N1 VERSION
DATECODE 1X
MASK NUMBER
TDA 8375
BATHCODE N3 VERSION
DATECODE 3Y
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 1997
Serial Number 3JCH8xxxxx
Document Ref: TB126
Issue No: 01
Model: CI3373T
TECHNICAL Product Group:
SCT11D
(00 TO 01)
CTV
BULLETIN Date:
Authorised
Signature:
5.1.98
Originator
Signature
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 oscillates
at 12 MHz, a harmonic of which is beating with the SIF via a ground
loop.
Cure: Remove C907 and fit a 104 (50v) ceramic capacitor as shown
In the diagram.
Condition Symptom Circuit Section Defect Repair
Code Code Ref Code Code Code
2 545 C907 DPR Y I
IRIS Code Information
For Warranty Claims
Document TB127
TECHNICAL Ref:
Issue No: 01
Model: CI5344
BULLETIN Product
Group:
CTV
Date: 27.1.98
Authorised
Signature:
Originator
Signature:
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.
C 301
R 302
V2 V1
NON-CONDUCTIVE
TAPE
EY26
Condition Symptom Circuit Section Defect Repair
Code Code Ref Code Code Code
1 316 EY26 DFL Z I
IRIS Code
Information
For Warranty
Claims
Document Ref: TB139
Issue No: 01
Model:
CI5079/3373
TECHNICAL Product Group:
5373
SCT11B/D
CTV
BULLETIN Date:
9.2.98
Authorised
Signature:
Originator
Signature
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 50V
Part No: 2301-000111
Condition Symptom Circuit Section Defect Repair
Code Code Ref Code Code Code
1 110 C852 PSU Y I
IRIS Code Information
For Warranty Claims
Document Ref: TB141
Issue No: 01
Model:
CI5933/6230/
TECHNICAL Product Group:
Date:
7230/6229
CTV
30.4.98
BULLETIN Authorised
Signature:
Originator
Signature
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 mods
2. Fit 2 parts as illustrated.
Condition Symptom Circuit Section Defect Repair
Code Code Ref Code Code Code
IRIS Code Information
For Warranty Claims
V1 V2 V1
PJ 28
C305
C305
R316 V1
R316
R305
REPLACE PJ28 ->10uh R305
IC401
BEFORE IC401
AFTER
R321
C306 R303
ADD 470nF CAP FIT C306
R303
CLOSE TO IC PIN #5
R317
C302
C303 C302
#5 #1 #3
#5 #1 #3
IC301 TDA3654
IC301 TDA3654
BEFORE AFTER REMARKS
NO CCT REF
SPEC CODE NO SPEC CODE NO
1 ADD POLY 100V 470nF 2305-000407
2 PJ28 10UH AL05 2701-001040
Document Ref: TB142
Issue No: 01
Model:
CI5944/6844
TECHNICAL Product Group:
SCT12 B
CHASSIS
CTV
BULLETIN Date:
16.6.98
Authorised
Signature:
Originator
Signature
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 surge
New part number: 3601-000-279
Replace F801 on all units for repair regardless of fault
Condition Symptom Circuit Section Defect Repair
Code Code Ref Code Code Code
2 111 F801 PSU R A
IRIS Code Information
For Warranty Claims
V1 V2 V1
PJ 28
C305
C305
R316 V1
R316
R305
REPLACE PJ28 ->10uh R305
IC401
BEFORE IC401
AFTER
R321
C306 R303
ADD 470nF CAP FIT C306
R303
CLOSE TO IC PIN #5
R317
C302
C303 C302
#5 #1 #3
#5 #1 #3
IC301 TDA3654
IC301 TDA3654
BEFORE AFTER REMARKS
NO CCT REF
SPEC CODE NO SPEC CODE NO
1 ADD POLY 100V 470nF 2305-000407
2 PJ28 10UH AL05 2701-001040
Document Ref: TB147
Issue No:
Model:
TECHNICAL
CI14F1T
CHASSIS CI3373
S15A CI5373
BULLETIN Product Group:
Date:
CTV
30/03/99
Authorised
Signature:
Originator
Signature
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