Sharp 25WG3, Service Manual

Page: 14 / 44

14
25WG3
Readjust vertical size.
Vertical size is abnormal/non linearity.
Check R503, R504 and R505.
Check IC501 bias.
DEFECTIVE VERTICAL AMP.
AND VERTICAL LINEARITY
NO VERTICAL SCAN
Normal
Abnormal
Check R503, C502, R501, C503 and C501.
Check R638,R620 and R512.
Is some colour produced in B/W broadcast reception?
Check IC201 and bias control circuit.
Correct and change the wrong parts.
Check IC801,IC401, X801, X802, C802, C803 and C804.
(PAL/NTSC)
(SECAM)
Check IC901 and its related parts.
NO SPECIFIC COLOUR
NO
NO
YES
YES
NO SPECIFIC COLOUR
(NO COLOUR SYNCHRONIZATION)
Normal
Abnormal
Check IC201, R802, R803, R804 and R412.
Is the white balance properly adjusted?
Readjust the white balance.
The picture colour is yellow.
The picture colour is magenta.
The picture colour is cyan.
Check pins (2), (8) of IC851 and its adjacent circuit.
Check pins (7), (3) of IC851 and its adjacent circuit.
Check pins (1), (9) of IC851 and its adjacent circuit.
SOLID ST
A
TE DEVICE B
ASE DIA
GRAM
TDA4671
IX3097CE
TDA7429
2SC1906
2SK583
2SK30AG
KIA7045P
RC102M
2SA1015 2SC1815
2SA1037 2SC2412
TOP VIEW
SIDE VIEW
DX0355CE
2SC3886
PX0003PE
M51497L
TDA6107
STR6656
AN5275
TDA8351
TDA4665
TDA8375
FX0024CE
S24C04A1
2SC3808
PX0274CE
PQ12RD PQ09RD PQ05RD
2SA1837 2SC4793
KIA7812P KIA7805P KIA7808P