4. NO VIDEO
NO VIDEO
YES
CHECK
SCREEN CONTROL
CLOCKWISE
YES
CHECK
U201 PIN 5, 8, 11
SIGNAL LEVEL
YES
CHECK
U201 PIN 18, 20, 23
SIGNAL LEVEL
PROBLEM IN U201
CLAMP(PIN 15)
U201 12V VOLTAGE
YES
CHECK
U203 PIN 1, 3, 5
SIGNAL LEVEL
CHECK
CATHODE VIDEO
LEVEL
PROBLEM IN CRT
YES
YES
PROBLEM IN
R220, R240, R260
NO
PROBLEM IN U203
12V, 77V VOLTAGE
NO
NO
TROUBLE IN
R/G/B SIGNAL,
SIGNAL CABLE
NO
REFER TO
“NO RASTER”
ON PAGE
NO
35
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 ...