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12. TROUBLE SHOOTING CHARTS
1. NO RASTER
CHECK MAIN
B+(130V/133V:
Flat Model)
ABNORMAL
CHECK VOLTAGE
OF C850
295VDC AT 230V
ABNORMAL
CHECK/REPLACE
F801
CHECK/REPLACE
D802-D805,R803
CHECK VOLTAGE AT
PIN 21 OF I701
ST-BY:L
POWER ON:H
CHECK VOLTAGE AT
PIN I701
NORMAL
CHECK SIGNAL AT PIN
7(SCL), 8(SDA) OF I701
CHECK/REPLACE
X701(24.576MHz), I701
NORMAL
CHECK/REPLACE
I801
(STR-W6756)
CHECK/REPLACE
I802(LTV-817C)
NORMAL
CHECK/REPLACE
I804(3.3V)
I805(5V)
ABNORMAL
CHECK VOLTAGE
PIN OF I701
CHECK HEATER VOLTAGE
VIDEO B+(189V) LINE
ABNORMAL
CHECK Horizontal
AT PIN 73 OF I701
CHECK VCC
AT PIN 9.16, 86.88 OF I701
CHECK SIGNAL AT
PIN 7.8 OF I701
CHECK/REPLACE
I701
CHECK/REPLACE
Q402,Q401,T402
R404,D401
CHECK/REPLACE
CRT BLOCK
-68-
NORMAL
NORMAL
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