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No picture (no raster) with normal sound
NOTE: 1702 locations are in (
).
[Cause] Malfunction of the video amplifier IC201, X202 (lC201, 0201)
The video signal and the audio signal output are supplied respectively to the video amplifier IC20 1
and the audio circuit IC601 . Sound is had but no picture; therefore, the faulty part is IC201 and its
external elements. Since pin 16 of the IC201 to the cathode of CRT is connected by a DC-coupled
amplifier, a fault raising the emitter voltage of X202 (0201) will cause the three initial ouptut tran-
sistors to cut off, resulting in no raster.
Check also the screen grid circuit for igniting the CRT heater and the high voltage module.
No sound (with normal picture)
NOTE: 1701 - Flowchart
1702 - Audio circuit has been reduced to IC601.
[Cause] Trouble in the audio circuit IC601, X601, X603 or X604 are faulty.
• C60S open
• IC601 is
faulty
NO
How is
110V
collector
(Normal)
voltage of
X602?
OV
.X602, X603
short
.FR6010pen
• X601
(open
I
• T602
(shortl
• X601
(shortl
19
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