CTV970201 Date of Issue : Classification :
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H 66CS05H
59CS03H 51CS05H
10/02/97 White Page 1 of 1
66CS03H 59CS05H
SYMPTOM The set remains in the standby mode. CAUSE
Crack on the PWB due to transport damage.
ACTION
If there is no 300VDC across C708, then check the continuity between L703 and the cathode of D704. If this is open circuit, fit a wire link between the two points as indicated in the diagram below.
Location of wire link on the component side of the PWB
Sharp Electronics (UK) Limited CE Technical Support Group Originator White - Carry out as required
$Y: Supervisor 3*- Approval Date 10/02/97
UK64601Y
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
CTV970202 Date of Issue : Classification :
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H 59CS05H
51CS05H 66CS03H
10/02/97 Yellow Page 1 of 2
59CS03H 66CS05H
SYMPTOM If there is a failure of any component within the vertical deflection circuit or if a set comes in for service then carry out the improvement detailed below. ACTION
1.
Add a new diode ( 1N4148 ) from the emitter of Q509 to the cathode of D513, cathode of diode to the emitter of Q509. Replace R534 with a 390R. Solder a fuse ( QFS-J1023CEZZ ) in series with L607. Solder a fuse ( QFS-J1023CEZZ ) in series with L608.
2. 3. 4.
Refer to the diagrams given below. REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
R534 -
Diode, 1N4148 Resistor, 390R 1/10W Fuse, 1A
RH-DX0045BMZZ VRS-TV1JD331J QFS-J1023CEZZ
Sharp Electronics (UK) Limited CE Technical Support Group Originator White - Carry out as required
$Y: Supervisor 3*- Approval Date 10/02/97
SP64500X
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
AA AA AA
CTV970203 Date of Issue : Classification :
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H 51CS05H
59CS03H 59CS05H
10/02/97 Yellow Page 1 of 1
66CS03H
SYMPTOM When used in a hot environment a bleeping sound may be heard from the speakers or there is intermittent sound loss. CAUSE
Pin 22 of IC301 floating.
ACTION
Insert wire link between pin 22 of IC301 and ground as indicated in the diagram below. To make the insertion of this link easier remove X301, fit wire, then replace X301.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
-
Wire Link, 20mm
VW7UGB0-020AA
Location of wire link on component side of PWB
Sharp Electronics (UK) Limited CE Technical Support Group Originator White - Carry out as required
$Y: Supervisor 3*- Approval Date 10/02/97
GE64801X
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
AA
CTV980204 Month of Issue : February 1998 Classification : White
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H 59CS05H 66CS05H
51CS05H 59CSD8H 66CSD8H
Page 1 of 1
59CS03H 66CS03H
SYMPTOM Intermittent sound. May be especially noticeable on channel change. CAUSE
Erratic response of the multi-standards processor, IC301.
ACTION
Connect a 47nF, 63V polyester capacitor from pin 61 of IC301 to ground. Use the part number given below for the capacitor.
REF NO
DESCRIPTION
PART NUMBER
-
Capacitor, 47nF 63V
RC-FZ9473BMNJ
Originator
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PRICE CODE AC
Sharp Electronics (UK) Limited CE Technical Support Group Supervisor
Approval Date
/ /
Reference GE73703X
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
CTV980602 Month of Issue : June 1998 Classification : White
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H 59CS05H 59CSD8H
Page 1 of 1
51CS05H 66CS03H 66CSD8H
59CS03H 66CS05H
SYMPTOM Intermittent vertical linearity problems or partial loss of vertical scan. CAUSE
Failure of components in the vertical output stage.
ACTION
Replace the following components in the vertical output stage:C506 and C507. D501, D502, D507 and D512 Q507, Q508 and Q512 Use the part numbers given below for these parts. Note that there are no part numbers in the service manual for C506 and C507. These are both 22nF SMD capacitors and should be sourced locally.
REF NO
DESCRIPTION
PART NUMBER
D501 D502 D507 D512 Q507 Q508 Q512
Zener Diode, 18V Zener Diode, 18V Diode, 1N4934 Diode, 1N4934 Transistor Transistor Transistor
RH-EX0558BMZZ RH-EX0558BMZZ RH-DX0504BMZZ RH-DX0504BMZZ RH-TX0147BMZZ RH-TX0151BMZZ RH-TX0150BMZZ
Originator
$Y:
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Sharp Electronics (UK) Limited Supervisor
PRICE CODE AA AA AA AA AD AD AC
CE Technical Support Group Approval Date
/
/
Reference 98269HT
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
CTV980603 Month of Issue : June 1998 Classification : White
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H
Page 1 of 1
59CS03H
66CS03H
REASON
From version 4 of this chassis, various changes have been made to the circuit.
ACTION
When servicing chassis versions 4 or greater ( see diagram below) use the 51CS05H ( Part number SEKL51CS05H/1 ) or the 59/66CS05H ( Part number SEKT66CS05H/2 ) service manuals. Changes to the 51CS03H, 59CS03H and 66CS03H circuitry are :1. An audio mute circuit now incorporated into the chassis. 2. R631 and R632 have been added in series to the vertical +/-13V supplies. For the 59CS03H and 66CS03H only R628, D616 and D621 have been added to the +45V supply line from the line output transformer.
Originator
$Y:
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Sharp Electronics (UK) Limited Supervisor
CE Technical Support Group
Approval Date
/
/
Reference AM 110398
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
CTV980605 Month of Issue : June 1998 Classification : White
TELEVISION TECHNICAL BULLETIN
Page 1 of 1
MODELS
66CS03H
REASON
Due to a running change during production, the loudspeaker has been changed for a smaller type.
ACTION
When fitting the new, small speaker in place of the larger type, a holder has to be fitted following the procedure outlined below. 1. 2. 3. 4.
59CS03H
59CSD8H
Remove the old speaker. Stick the adhesive foam to the speaker holder. Fit the new speaker into the plastic holder. Fit the new speaker and holder into the cabinet.
REF NO
DESCRIPTION
PART NUMBER
-
Loudspeaker Speaker holder Adhesive foam
VSP1306PB067S GBFL-1003BM00 PMLT-1032BM00
Sharp Electronics (UK) Limited
Originator
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Supervisor
PRICE CODE AR AD AC
CE Technical Support Group
Approval Date
/
/
Reference FR81100X
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
CTV970204 Date of Issue : Classification :
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H
59CS03H
10/02/97 White Page 1 of 1
66CS03H
SYMPTOM If used in a hot environment, the picture can become saturated with red, green or blue blanking lines. CAUSE
Build up of flux around transistors on the CRT Socket PWB, causing tracking between them.
ACTION
1. 2. 3. 4.
Remove SMD transistors Q870, Q871 and Q872. Clean the exposed areas with a bristle brush impregnated with alcohol. Clean the SMD transistors with alcohol. Replace the transistors.
Sharp Electronics (UK) Limited CE Technical Support Group Originator White - Carry out as required
$Y: Supervisor 3*- Approval Date 10/02/97
GE64802X
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
CTV970207 Date of Issue : Classification :
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H
59CS03H
Page 1 of 1
66CS03H
SYMPTOM No or intermittent vertical output. CAUSE
Intermittent solder joint on L501.
ACTION
Resolder joint on L501 as shown in the diagram below.
Points to resolder on L501
Sharp Electronics (UK) Limited CE Technical Support Group Originator White - Carry out as required
10/02/97 White
$Y: Supervisor 3*- Approval Date 10/02/97
UK70200X
Yellow - Carry out as required and whenever unit comes in for service
Red - Carry out on all units
CTV990113 Month of Issue: January 1998 Classification: White Page 1 of 2
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H
51CS05H
59CS03H
59CS05H
59CSD8H
66CS03H
66CS05H
66CSD8H
Symptom
Possible Remedy
Dead no sound or vision) Q701 & Q601 failed
*
Q601 failed Q601 s/c and failure of audio o/p stage
No voltage at Q701 drain NICAM LED on or flashing (aerial disconnected)
D609, D610, D720, D718, Q702, Q703, C601, C604, C619, C714, C708, R706, R707, R720 and inspect scan coils and scan coil socket for bad connections. D609, D610, C601, C604, C619 and inspect scan coils/scan coil socket for bad connections. Q601 failed due to missing - 16V rail (supply to o/p stage). Leave Q601 out of circuit until you have confirmed that both the +16V and the -16V rails are correct. Technical Bulletin CTV970201 (Issued Feb 97) See flowchart on page 2
HT rail present, no line drive, NICAM LED switches on for Check R611 and IC201 3-6 seconds then goes off (ariel disconnected) Keeps switching to standby Check audio output stage for a short circuit HT rail missing-unsolder pin 2 of 0V Power supply not running (check CTV is not in LOPTX and measure the HT rail standby mode 20V-40V Short on one of the secondary LT supply rails e.g. audio o/p stage 110V-150V Short circuit on line o/p stage Line drive pulsating IC401 not communicating with micro Line drive pulsating and R628 (R634 in later Q704 (low standby/sound 5V rail) models) burning Slow start up i.e. more than 3-6 seconds for C714 (please ensure that this is replaced with the line oscillator to start depending on model specified part) Audio Problems Intermittent sound Whistle on the Audio (later models only) Distorted sound
Technical Bulletin CTV970203 or CTV980204 Damage print feeding 40V to R368 IC301 (MSP3410)
Vertical O/P Stage Faults No or intermittent vertical output Failure of vertical output stage Intermittent frame cramping Rainbow effect (no line pulses at IC501 pin 2) Rainbow effect and R628 (R634 in later models) open circuit
Originator AvW Supervisor
Technical Bulletin CTV970207 (Issued Feb 97) Technical Bulletin CTV970202 (Issued Feb 97) & check Q507/8/9 Replace D501, D502, D507, D512, C506 & C507 C501 R631 or R632 fusible resistors
Sharp Electronics (UK) Limited Approval Date / / Revision 1
Reference AVW120199/2
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV990113 Month of Issue: January 1998 Classification: White Page 2 of 2
TELEVISION TECHNICAL BULLETIN Symptom
Possible Remedy
Other Problems East West correction
Check D605, D612, D619, D621 & R628 (R634 in later models) Technical Bulletin CTV970204 (issued Feb 97) D602 Technical Bulletin CTV970806 (Issued Feb 97)
Blank raster and flyback lines when hot Blank raster ( no sandcastle pulse) Tuner drift
Notes 1. 2. 3. 4. 5. 6. 7.
D609 & D610 may not read faulty. Q601, IC201 & C601 are different devices in the 51cm than the larger models. Before replacing IC201 ensure that 8V is present on all three supply pins (22,23 & 53) The value of R706 in the 59CS05 & 66CS05 models is 0.33ohm. CTV must be tuned to CH69 and receiving a signal before the IF PLL (ACF) is carried out. For alternative 45V and Audio Mute circuits (??CS)3H models only) refer to ??CSO5H service manual. Some exchange PWB will have a single 4 pin socket instead of two 2 pin sockets for the loudspeaker connections. Carefully trim the two 2 pin plug to enable them to fit into the single 4 pin socket.
* These parts except for R707 & R720 are available as a kit. Part numbers are: 51 cm models 59/66cm models
Originator AvW Supervisor
51 CSCHASSISKIT 59 CSCHASSISKIT
Sharp Electronics (UK) Limited Approval Date / / Revision 1
Reference AVW120199/2
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV990108 Month of Issue: January 1999 Classification: White Page 1 of 1
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H
51CS05H
59CS03H
59CS05H
59CSD8H
66CS03H
66CS05H
66CSD8H
SYMPTOM During a fault condition, the NICAM LED may flash in a certain sequence to indicate where the fault lies. ACTION
The diagram below reprensents the NICAM LED flashing sequence to indicate which part of the circuit is fualty. Note that this facilty is only avialable on later CS chassis. Vertical deflection failure detected: 66% ON / 33% OFF and OFF for a second.
One second
One second
Unable to read or write into NVM: 66% ON / 33% OFF for two times and OFF for a second.
One second
One second
MSP failure: 66% ON / 33% OFF for three times and OFF for a second
One second
One second
Video IC failure: 66% ON / 33% OFF for four times and OFF for a sec.
One second
One second
Sharp Electronics (UK) Limited Approval Date / / Reference JC091298 Revision 2 White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units Originator AvW Supervisor
CTV970806 Month of Issue: August 1997 Classification: White Page 1 of 1
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H
51CS05H
59CS03H
59CS05H
59CSD8H
66CS03H
66CS05H
66CSD8H
SYMPTOM After the set has warmed up, the AFT circuit may become unstable. This leads to the set drifting off tune, either on one channel or all channels. CAUSE
Changes of tollerances in the AFT circuit.
ACTION
Readjust the AFT circuit as descibed in the adjustment service manual. This is duplicated below for reference. 1. 2. 3. 4. 5.
Place the set in the service mode. Apply a colour bar pattern to the RF input at 855.25MHz. Press the standby button on the remote control. The set will now undertake the AFT adustment automatically. Turn the set off by the mains switch to cancel the service mode.
Sharp Electronics (UK) Limited Reference UK72700X Revision 1 White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV990603 Month of Issue: June 1999 Classification: White Page 1 of 2
TELEVISION TECHNICAL BULLETIN MODELS
51CS03H
51CS05H
59CS03H
59CS05H
59CSD8H
66CS03H
66CS05H
66CSD8H
SYMPTOM The receiver can suffer from any of the symptoms listed below. • • • •
ACTION
Intermittent failure of Q601 Intermittent failure of Q701 No start up Q601 running excessively hot
Fit the CS Chassis kit, details given below.
REF NO
DESCRIPTION
PART NUMBER
-
Kit for 51cm models Kit for 59/66cm models
51CSCHASSISKIT 59CSCHASSISKIT
PRICE CODE AT AV
The kits in the parts list above contain the following parts, it is strongly recommended that ALL parts are fitted.
C601 C604 C619 C708 C714 D609 D610 D718 D720 F701 Q601 Q701 Q702 Q703 R706 R706 R707
51CSCHASSISKIT
59CSCHASSISKIT
RC-FZ0147BMZZ RC-EZ0122BMZZ VCEAGA1JW107M RC-FZ9683BMNJ VCEAHA1AB108M RH-DX0503BMZZ RH-DX0504BMZZ RH-EX0419BMZZ RH-DX0045BMZZ QFS-C3226CEZZ RH-TX0125BMZZ RH-TX0166BMZZ RH-TX0102BMZZ RH-TX0102BMZZ VRN-VV3ABR47J
RC-FZ0152BMZZ RC-EZ0122BMZZ VCEAGA1JW107M RC-FZ9683BMNJ VCEAHA1AB108M RH-DX0503BMZZ RH-DX0504BMZZ RH-EX0419BMZZ RH-DX0045BMZZ QFS-C3226CEZZ RH-TX0144BMZZ RH-TX0166BMZZ RH-TX0102BMZZ RH-TX0102BMZZ VRN-VV3ABR47J VRN-VV3ABR33J VRS-TV1JD221J
VRS-TV1JD221J
Note
High temperature type
High temperature type
Different transistor for 51 and 59/66cm models
Not for 59CS05H or 66CS05H models For 59CS05H and 66CS05H models only
Notes: Check the scan coils and scan coil plug for dry joints. Ensure that the resistor next to C604 (R638) is at least 5mm away from the body of the capacitor. R706 is 0.33 Ohms in the 59CS05H and 66CS05H. The schematic diagrams on page 2 are based on the 59CSD8H.
Sharp Electronics (UK) Limited Reference JCJRAVW040699 Revision 1 White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV990603 TELEVISION TECHNICAL BULLETIN
Month of Issue: June 1999 Classification: White Page 2 of 2
Schematic Diagram Showing the Location of Components in the Power Supply
Schematic Diagram Showing the Location of Components in the Line Stage
Sharp Electronics (UK) Limited Reference JCJRAVW040699 Revision 1 White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV990110 Month of Issue: January 1998 Classification: White Page 1 of 1
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H
51CS05H
66CS03H
66CS05H
59CS03H
59CS05H
SYMPTOM Doming caused by high beam current in limited areas of the CRT shadowmask causing short term purity errors.
ACTION
Reduce the customer brightness and contrast settings to a point at which doming does not appear. Note that these levels then need to be stored while in the user picture set up menu.
Sharp Electronics (UK) Limited Reference JC110199/1 Revision 2 White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV2000 01 09 Month of Issue: February 2000 Classification: White Page 1 of 1
TELEVISION TECHNICAL BULLETIN MODELS
51CS03H
51CS03IR
51CS05H
59CS03H
59CS03IR
59CS05H
59CSD8H
66CS03H
66CS03IR
66CS05H
66CSD8H
SYMPTOM • • • • • •
Slow start up Intermittent text Intermittent OSD rolling Intermittent height problems Poor vertical linearity (cramping top or bottom of the picture) Intermittent failure on the line output transistor.
CAUSE
Failure of C604, C619 and/or C714.
ACTION
Replace the capacitors with high temperature types. Please use the part numbers listed below.
REF NO
DESCRIPTION
PART NUMBER
C604 C619 C714
Capacitor 330µF, 10V 105°C Capacitor 100µF, 63V 105°C Capacitor 1000µF, 10V 105°C
VCEAHA1AN337M VCEAHA1JN107M VCEAHA1AN108M
FIG 1
PRICE CODE AB AC AD
FIG 2 Sharp Electronics (UK) Limited Reference UK92300X Revision 2
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV2000 03 03 Month of Issue: Classification:
TELEVISION TECHNICAL BULLETIN MODELS
March 2000 White Page 1 of 1
51CS03H
51CS05H
59CS03H
59CS05H
59CSD8H
66CS03H
66CS05H
66CSD8H
SYMPTOM A bright line appears at the top of the frame (approximately one-inch down) if it is adjusted correctly. Usually the customer complains that the frame has come down about half an inch at the top of the picture (no fold over). This cannot be removed by adjustment.
CAUSE
Failure of C512 or C517.
ACTION
Replace C512 and C517 (22uF, 25V).
Sharp Electronics (UK) Limited Reference JC03032000-2 Revision 1
White – Carry out as required Yellow – Carry out as required and whenever the unit comes in for service Red – Carry out on all units
CTV2000 04 02 Month of Issue: Classification:
TELEVISION TECHNICAL BULLETIN MODELS
April 2000 White Page 1 of 1
51CS03H
51CS05H
59CS03H
59CS05H
59CSD8H
66CS03H
66CS05H
66CSD8H
SYMPTOM No or intermittent sound.
CAUSE
D333 breaking down intermittently.
ACTION
Replace D333 using the part number given below.
REF NO
PART NUMBER
DESCRIPTION
D333
RH-EX0544BMZZ
Zener diode, 4.7V
Sharp Electronics (UK) Limited Reference GGN31032000-1 Revision 1
White – Carry out as required Yellow – Carry out as required and whenever the unit comes in for service Red – Carry out on all units
PRICE CODE AA
CTV2000 06 07
Month of Issue: Classification:
TELEVISION TECHNICAL BULLETIN MODELS
June 2000 White Page 1 of 1
51CS03H
51CS05H
59CS03H
59CS05H
59CSD8H
66CS03H
66CS05H
66CSD8H
SYMPTOM 1. Intermittent failure of one or both of the vertical supply line fuses (R631 and R632). 2. Frame rises up when warm until there is a large black band at the bottom of the screen. This can eventually lead to the 'rainbow effect' at the top of the screen. 3. Line tripping (same symptom when the Megatext IC goes faulty). 4. Slow to come out of standby. CAUSE
Breakdown of Q707, causing variation of the main 5V supply rail to the vertical stage and Megatext IC.
ACTION
This problem can be checked by measuring the voltage at the emitter of Q707 during the fault condition. Note that Q707 can fail when C714 is replaced, so it is recommended that C714 is changed at the same time as Q707.
REF NO
DESCRIPTION
PART NUMBER
Q707 C714
Transistor, BC338-40 Capacitor, 1000mF 10V 105°C
RH-TX0218BMZZ VCEAHA1AB108M
Sharp Electronics (UK) Limited Reference JR20062000-1 Revision
1
White Carry out as required Yellow Carry out as required and whenever the unit comes in for service Red Carry out on all units
PRICE CODE AB AD
CTV990113 Month of Issue: January 1998 Classification: White Page 1 of 2
TELEVISION TECHNICAL BULLETIN
MODELS
51CS03H
51CS05H
59CS03H
59CS05H
59CSD8H
66CS03H
66CS05H
66CSD8H
Symptom
Possible Remedy
Dead no sound or vision) Q701 & Q601 failed
*
Q601 failed Q601 s/c and failure of audio o/p stage
No voltage at Q701 drain NICAM LED on or flashing (aerial disconnected)
D609, D610, D720, D718, Q702, Q703, C601, C604, C619, C714, C708, R706, R707, R720 and inspect scan coils and scan coil socket for bad connections. D609, D610, C601, C604, C619 and inspect scan coils/scan coil socket for bad connections. Q601 failed due to missing - 16V rail (supply to o/p stage). Leave Q601 out of circuit until you have confirmed that both the +16V and the -16V rails are correct. Technical Bulletin CTV970201 (Issued Feb 97) See flowchart on page 2
HT rail present, no line drive, NICAM LED switches on for Check R611 and IC201 3-6 seconds then goes off (ariel disconnected) Keeps switching to standby Check audio output stage for a short circuit HT rail missing-unsolder pin 2 of 0V Power supply not running (check CTV is not in LOPTX and measure the HT rail standby mode 20V-40V Short on one of the secondary LT supply rails e.g. audio o/p stage 110V-150V Short circuit on line o/p stage Line drive pulsating IC401 not communicating with micro Line drive pulsating and R628 (R634 in later Q704 (low standby/sound 5V rail) models) burning Slow start up i.e. more than 3-6 seconds for C714 (please ensure that this is replaced with the line oscillator to start depending on model specified part) Audio Problems Intermittent sound Whistle on the Audio (later models only) Distorted sound
Technical Bulletin CTV970203 or CTV980204 Damage print feeding 40V to R368 IC301 (MSP3410)
Vertical O/P Stage Faults No or intermittent vertical output Failure of vertical output stage Intermittent frame cramping Rainbow effect (no line pulses at IC501 pin 2) Rainbow effect and R628 (R634 in later models) open circuit
Originator AvW Supervisor
Technical Bulletin CTV970207 (Issued Feb 97) Technical Bulletin CTV970202 (Issued Feb 97) & check Q507/8/9 Replace D501, D502, D507, D512, C506 & C507 C501 R631 or R632 fusible resistors
Sharp Electronics (UK) Limited Approval Date / / Revision 1
Reference AVW120199/2
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV990113 Month of Issue: January 1998 Classification: White Page 2 of 2
TELEVISION TECHNICAL BULLETIN Symptom
Possible Remedy
Other Problems East West correction
Check D605, D612, D619, D621 & R628 (R634 in later models) Technical Bulletin CTV970204 (issued Feb 97) D602 Technical Bulletin CTV970806 (Issued Feb 97)
Blank raster and flyback lines when hot Blank raster ( no sandcastle pulse) Tuner drift
Notes 1. 2. 3. 4. 5. 6. 7.
D609 & D610 may not read faulty. Q601, IC201 & C601 are different devices in the 51cm than the larger models. Before replacing IC201 ensure that 8V is present on all three supply pins (22,23 & 53) The value of R706 in the 59CS05 & 66CS05 models is 0.33ohm. CTV must be tuned to CH69 and receiving a signal before the IF PLL (ACF) is carried out. For alternative 45V and Audio Mute circuits (??CS)3H models only) refer to ??CSO5H service manual. Some exchange PWB will have a single 4 pin socket instead of two 2 pin sockets for the loudspeaker connections. Carefully trim the two 2 pin plug to enable them to fit into the single 4 pin socket.
* These parts except for R707 & R720 are available as a kit. Part numbers are: 51 cm models 59/66cm models
Originator AvW Supervisor
51 CSCHASSISKIT 59 CSCHASSISKIT
Sharp Electronics (UK) Limited Approval Date / / Revision 1
Reference AVW120199/2
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV990203 Month of Issue: Febuary 1999 Classification: White Page 1 of 1
TELEVISION TECHNICAL BULLETIN
MODELS
51DS02H
51DS03H
51DS05H
59DS03H
59DS05H
66DS03H
66DS05H
66ES05H
Common Faults on the CA10 chassis Fault
Reason
Cause
No functions - set will not turn on
Supply to IC702 missing
R704 open circuit
Set not coming out of standby
Start up pulse missing
R713/4 open circuit or high
Vertical scanning problems
No supply to vertical output stage
F601 and/or F602 (note that both these fuses shoulc be 1.5A)
Child lock problems
Programming error
Go into the service mode and select Auto Installion On, then restart set.
No or intermittent response from the remote control and/or front buttons
No response from the slave micro
R704 and/or R705 high resistance
Set locks up
No response from the slave micro
R704 and/or R705 high resistance
Circuit changes around IC201
IC201 has been changed in production
Refer to Technical Bulletin CTV980809
Other circuit changes
Change of CRT type to Thompson
Refer to Technical Bulletin CTV981203 or CTV981204
When replacing R704, R705, R713 or R714 please ensure that 1W resistors are used. Note that the CA1\CA10 chassis training course notes are available on the Sharp Electronics (UK) Limited Web Site (www.tradenet.sharp.co.uk/tech) under the models fitted with these chassis - grouped under the Service Manual heading. These notes contain in depth details on circuit operation. Please refer to these while fault finding. If you have a fault to add to the above list, please do no hesitate to contact Sharp Technical Support via the Hot Line telephone number.
Sharp Electronics (UK) Limited Reference AVW150299/2 Revision 6 White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
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