16
NO RASTER
Does horizontal circuit
oscillate ?
Check T701 pin (8) voltage
(Approx. 310V at 220V AC)
Check Secondary Main+B
(Approx. 125V)
Check CRT connector K-
wire and the signal on it.
Check IC801 pin 13
Check
IC801
Check Q752 for 8V regulator
circuit and Q752, IC751, Q754
for 5V regulator circuit.
Check D751,
IC702 and IC703
Normal
Normal
Check Q601,
Q602 and Q604
NO PICTURE NO SOUND
Does noise or signal appear at pin (30)
of IC801 ?
Check the tuner AGC at
JA402.
Check IC801 and
related circuit.
Check pin (1) of
SF201, Tuner and
related circuit.
Check pin (46) at
IC801 and related
circuit.
Check pin (47) of
IC801, Tuner and
related circuit.
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Automatic Gain Control.
(5V), (32V) Power Source.
Does noise or
signal appear at
pin (48) and (49)
of IC801 ?
Does noise or
signal appear at
pin (8) ,(9),(11) (12)and
of IC301 ?
SOUND
Check signal appear
from pin (65) & (66) of
IC801 to pin (2) & (4) of
IC301
Check IC301 and
peripheral circuit
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