3. VIDEO NOISE, UNSYNCHRONOUS
CHECK HORIZONTAL
FREQUENCY C114 TO GND
CHECK
Q102 G-S FREQUENCY
SYNCRONIZE
WITH H-SYNC
CHECK HORIZONTAL
FREQUENCY C132 TO GND
CHECK C132, R139,
D115, R138, R140
NORMAL OPERATION
CHECK
Q101 G-S FREQUENCY
SYNCRONIZE
WITH H-SYNC
CHECK C114, R116
D109, R115, R117
YES
YES
NO
NO
NO
NO
34
Summary of Contents for Diamand Scan 71
Page 9: ... 6 Diamand Scan 71 ...
Page 70: ...10 Monolithic triple 13 5nS CRT driver 67 ...
Page 71: ...68 ...
Page 72: ...69 ...
Page 73: ...70 ...
Page 102: ...99 SCHEMATIC DIAGRAMS 1 Video Board ...
Page 103: ...100 2 Main Board ...