19” CDT Color Monitor 109B7
32
7-5 . No Horizontal Blanking
7-6 . A Horizontal Bright Trace
Check the vertical toothed waveform voltage of
IC101 Pin33, 34
Check C105
、
R135
、
R154
Check IC601 Pin5 vertical output
Check IC601 Pin1,4 VCC about 12V,-12V
Check the inputting vertical toothed waveform
voltage of IC601 Pin6, 7
Check DY
、
IC601 and relative component
Check R603
、
R604
、
C601
、
R601
OK
OK
OK NG
NG
NG
Check IC601, DY and relative
t
NG
Check Q403 collector antidromic
pulse about 1000V
Check D701
、
C412
、
C410
、
D705
、
D707 and relative component
Check IC801 Pin24 input waveform
Check H802 Pin8 waveform
OK
OK
NG
NG
Check P802
NG
Check relative circuit of IC101
Summary of Contents for 109B7
Page 21: ...19 CDT Color Monitor 109B7 21 Step 5 Enter into Fig 8 Fig 8 Step 6 Enter into Fig 9 Fig 9 ...
Page 35: ...19 CDT Color Monitor 109B7 35 8 Mechanical of Cabinet Front Dis Assembly ...
Page 58: ...19 CDT Color Monitor 109B7 58 11 Block Diagram ...
Page 60: ...19 CDT Color Monitor 109B7 60 SAA4849 ...
Page 64: ...19 CDT Color Monitor 109B7 64 13 PCB Layout 13 1 Main Board PCB layout ...
Page 65: ...19 CDT Color Monitor 109B7 65 13 2 CRPC Board Layout ...