Read Sharp 51GT-25 (serv.man2) Service Manual online
11
51GT-25H
1. Y-DLY
ALTERNATIVE CRT:
See below detailed information in order to adapt from THOMSON ↔ PHILIPS CRT.
See below detailed information in order to adapt from THOMSON ↔ PHILIPS CRT.
THOMSON CRT
PHILIPS CRT
PARTS
REF.
REF.
PARTS CODE
DESCRIPTION
PARTS CODE
DESCRIPTION
CRT
VB51EFS83912E
21” CRT
VB51EAL15511N
21” CRT
R609
VRN-VV3ABR82J
0.82Ω 1W
VRN-VV3AB3R3J
3.3Ω 1W
C606
RC-FZ6394BMNJ
390nF 250V
RC-FZ6474BMNJ
470nF 250V
(F) wire
CSOCN0460BMV4
(F)
NVM data
Data 24
Address 58
Data 22
Address 58
a) Receive Philips pattern signal.
b) When
b) When
∧
button is pressed, luma phase delays.
c) When
∨
button is pressed, chroma phase delays.
d) Adjust the chroma-luma delay.
•COLOUR ADJUSTMENT PROCEDURES
2. «B-GAIN», «G-GAIN», «R-GAIN»
a) Adjust G2.
b) Tune a white pattern
c) Adjust colour to minimum.
d) Position colourmeter in the center of screen.
e) Using brightness and contrast buttons, select a luminance of »120 nits.
f) Operate again in Service Mode and select location R-GAIN and B-GAIN
to obtain colour coordinates:
b) Tune a white pattern
c) Adjust colour to minimum.
d) Position colourmeter in the center of screen.
e) Using brightness and contrast buttons, select a luminance of »120 nits.
f) Operate again in Service Mode and select location R-GAIN and B-GAIN
to obtain colour coordinates:
X = 0.290 ± 0.015
Y = 0.284 ± 0.015
Y = 0.284 ± 0.015
g) Exit Service Mode and check colour coordinates «X» and «Y» at 20 and 120 nits. It may be
necessary to repeat the same procedure or re-adjust the cuts as show the be below one.
necessary to repeat the same procedure or re-adjust the cuts as show the be below one.
NOTE: Locations «R» alter «X» coordinates; «G» alter «Y» coordinates; «B» alter «X» and «Y»
coordinates.
coordinates.
