SHARP 59CS-05H, 66CS-05H Schematics

CTV990113

ge)

Month of Issue: January 1998

Classification: White

TELEVISION TECHNICAL BULLETIN

Page 1 of 2

MODELS 51CS03H 51CS05H 59CS03H 59CS05H

59CSD8H 66CS03H 66CS05H 66CSD8H

Symptom Possible Remedy
Dead no sound or vision)

Q701 & Q601 failed * 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.

Q601 failed D609, D610, C601, C604, C619 and inspect scan

coils/scan coil socket for bad connections.

Q601 s/c and failur e of audio o/p stage Q601 failed due t o missing - 16V rail (supply to o/p

. Leave Q601 out of circuit until you have

sta
confirmed that both the +16V and the -16V rails are

correct.
No voltage at Q701 drain
NICAM LED on or flashing (aerial disconnected) See flowchart on page 2

Technical Bulletin CTV970201

(Issued Feb 97)

HT rail present, no li ne drive, NICAM LED switches on for
3-6 seconds then goes off ( ari el disconnected)
Keeps switchi ng to standby Check audio output stage for a short circuit
HT rail missing-unsolder pin 2 of
LOPTX and measure the HT rail

Line drive pulsating IC401 not communicating with micro
Line drive pulsating and R628 (R634 in later Q704 (low standby/sound 5V rai l)
models) burning
Slow start up i.e. more t han 3- 6 seconds for
line oscillator to start depending on model

Audio Problems

Intermittent sound Technical Bulletin CTV970203 or CTV980204
Whistle on the Audio (l ater models only) Damage print feedi ng 40V to R368
Distorted sound IC301 (MSP3410)

Vertical O/P Stage Faults

No or intermitt ent ver tical output Technical Bulletin CTV970207 (Issued Feb 97)
Failure of verti c al output stage Technical Bulletin CTV970202 (Issued Feb 97) &

Intermittent fram e c r am ping Replace D501, D502, D507, D512, C506 & C507
Rainbow effect (no line pulses at IC501 pin 2) C501
Rainbow effect and R628 (R634 in later models) open
circuit

0V Power supply not running (check CTV is not in
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

Check R611 and IC201

C714 (please ensure that this is replaced with the
specified part)

check Q507/8/ 9

R631 or R632 fusible resi stor s

Originator AvW Supervisor Approval Date / / Reference AVW120199/2

Sharp Electronics (UK) Limited

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

CTV990113

(

Month of Issue: January 1998

Classification: White

TELEVISION TECHNICAL BULLETIN

Symptom Possible Remedy

Other Problems

East West correction Check D605, D612, D619, D621 & R628

later models)
Blank raster and fl y bac k li nes when hot Technical Bulletin CTV970204 (issued Feb 97)
Blank raster ( no sandcastle pulse) D602
Tuner drift Technical Bulletin CTV970806 (Issued Feb 97)

R634 in

Page 2 of 2

Notes

1. D609 & D610 may not read faulty.

2. Q601, IC201 & C601 are diff er ent devic es i n the 51cm than the larger models.

3. Before replaci ng IC201 ensure that 8V is present on all three supply pins (22,23 & 53)

4. The value of R706 in the 59CS05 & 66CS05 models is 0.33ohm.

5. CTV must be tuned to CH69 and receiving a signal before the IF PLL (ACF) is carried out .

6. For alternativ e 45V and Audi o Mute ci r c uits (??CS)3H models only) refer to ??CSO 5H servic e m anual.

7. Some exchange PWB will hav e a single 4 pin socket instead of t wo 2 pin sockets for the loudspeaker
connections. Carefully trim the two 2 pin plug to enabl e 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

Sharp Electronics (UK) Limited

Originator AvW Supervisor Approval Date / / 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

51 CSCHASSISKIT
59 CSCHASSISKIT

Revision 1