Check the waveform
at pin 52, 60 of IC501.
Check/Replace
VGA01.
Check the waveform
at pin 31, 32, 33 of IC507.
NO
NORMAL
Check/Replace
VGA01.
Check/Replace
IC507.
NO
NORMAL
NO VGA
Check the voltage
at pin 44 of IC01.
Check/Replace
IC01.
Check the waveform
at pin 10~13 of IC203.
0V
5V
Check the waveform
at pin 6~8 of IC203.
Check/Replace
IC503.
NO
NORMAL
Check/Replace
Q202, Q208, Q209.
Check/Replace
IC203.
NO
NORMAL
NO COMPONENT
Summary of Contents for MC-993A
Page 13: ...31V FR852 D814 ...
Page 14: ......
Page 15: ...FR848 D811 FR829 ZD103 IC102 R110 61 19 IC201 Q203 Q204 IC204 IC03 ...
Page 18: ...Service Sheet of MC 993A P N 3854VA0061A S1 1 2 Date 1999 7 23 Video Y C Audio Waveform ...
Page 19: ...Service Sheet of MC 993A P N 3854VA0061A S2 1 2 Date 1999 7 23 ...
Page 20: ...CPT CONTROL POWER ...
Page 21: ...DIGITAL TOP DIGITAL BOTTOM ...
Page 22: ...PRINTED CIRCUIT BOARD MAIN ...
Page 23: ...MAIN 2 ...
Page 24: ...SIDE BOARD SOFT TOUCH ...