5 Troubleshooting
5-10
720C/920C
5-1-17 Micom Failure
IC201 Pin 11 input is right?
IC201 Pins 13 and 14 inputs
are right?
Check X201, C204 and C205.
Yes
Yes
No
Check IC606.
No
IC201 Pin 18 input is right?
Check IC202.
Yes
No
All in/output values are right?
Replace IC201.
Yes
No
Done
1
2
1
3
1
2
3.42 V (IC201, #33)
CH1 P-P = 3.42 V
CH1 RMS = 2.500 V
1
3
3.16 V (IC201, #32)
CH1 P-P = 3.16 V
CH1 RMS = 2.560 V
WAVEFORMS
Содержание 720C
Страница 33: ...720C 920C 6 1 6 1 720C Exploded View and Parts List ...
Страница 34: ...720C 920C 6 2 6 2 920C Exploded View and Parts Lists ...
Страница 79: ...T601 C639 C609 C636 C638 L601 C604 D637 D608 10 1 Power Parts Schematic Diagram 720C 920C 10 1 ...
Страница 80: ...R299 720C 920C 10 2 10 2 MICOM Parts Schematic Diagram ...
Страница 81: ...720C 920C 10 3 10 3 Horizontal Vertical Processor Parts Schematic Diagram R265 C272 R262 ...
Страница 83: ...R561 R562 R501 C530 L521 R523 R526 720C 920C 10 5 10 5 High Voltage Parts Schematic Diagram ...
Страница 84: ...720C 10 6 1 10 6 1 720C Video Parts Schematic Diagram ...
Страница 86: ...720C 920C 10 7 10 7 Connector and Option Boards Parts Schematic Diagram CN142 slcon4p slcon4p CN141 CN208 ...