Sharp 51DT-25H (serv.man27) Service Manual / Technical Bulletin ▷ View online
Sharp Electronics (UK) Limited
Originator AvW Supervisor Approval Date / / Reference SP84401X
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV981202
Month of Issue: December 1998
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 1 of 2
MODELS
51DT25H
REASON
During production the CRT type has been changed from a Philips to Thomson type.
When replacing the CRT, follow the instructions below, depending on the type fitted.
ACTION
When replacing a Philips CRT with a Thomson one follow the procedure below.
1. Replace CRT (refer to diagrams on page two).
2. Replace C606 with a 390nF, 5% 200V capacitor.
3. Replace R609 with a 0.82R, 5% 1W resistor.
4. Replace the deflection yoke wire (QCNW-2621BMZZ).
5. Enter the service mode NVM adjustment mode and change location 58 from 23 to
2. Replace C606 with a 390nF, 5% 200V capacitor.
3. Replace R609 with a 0.82R, 5% 1W resistor.
4. Replace the deflection yoke wire (QCNW-2621BMZZ).
5. Enter the service mode NVM adjustment mode and change location 58 from 23 to
25 (press '0' on the remote control).
When replacing a Thomson CRT with a Philips one, the oposite of the above must be
done.
done.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
VB
Thomson Videocolor CRT
VB51EFS8391*N
CF
R609
Resistor 0.82R, 1W
VRN-VV3ABR82J
AA
C606
Capacitor 390nF, 200V
RC-FZ6394BMNJ
AD
(F)
Deflection yoke wire
QCNW-2621BMZZ
AE
Sharp Electronics (UK) Limited
Originator AvW Supervisor Approval Date / / Reference SP84401X
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
CTV981202
Month of Issue: December 1998
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 2 of 2
5 4 3 2
4 3 2 5
Yellow Orange Red Green
V2 H2 H1
V1
Green Yellow Red
Orange
Orange
V1 V2 F2 F1
FIG. 2.
Philips
CRT
CRT
Thomson
CRT
CRT
Display
