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VCR PLAYBACK MODE (LUMINANCE) TROUBLESHOOTING
No playback.
Are there Y/C data and
clock signals at pins (17)
and (18) of IC2201
respectively when
playback starts ?
Is there H. SW. Pulse at
pin (1) of IC3301 ?
I
YES
NO GOOD
.
Head cleanning.
I
Is there a signal at pin
NO
YES
Is there 5V at pin (14)
Is there a signal at pin
NO
and (54) of IC2201 ?
YES
FLOWCHART NO. 1-15
line.
I
I
Check video head and/or
replace lC3301.
I
I
Check the PCSV line.
VCR PLAYBACK MODE (CHROMA) TROUBLESHOOTING
I
I
Are there Y/C data and
clock signals at pins (17)
and (18) of IC2201
respectively when
playback starts ?
I
I
I
YES
Check the pin (35) of IC3301 is OV
Check the signal line all the way up to
YES
Check the signal at pm
(Frequency, 4.43MHz
(PAL), Frequency,
I
Replace IC2201.
ABNORMAL
-
-
peripheral circuit.
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