17
3. A Missing Color
Is input signal
normal?
One color is
missing
CRT
Cathode (Rk, Gk, Bk)
is normal?
Is video
output Q801, Q831, Q861
waveform normal?
Each grid (G1, G2)
voltage normal?
Is the
output of
pre-amp IC801
pin 14,16,19 all
normal?
Check video signal
cable or video card
Trouble in IC801 or its
ambient circuit
Trouble in
video output
circuit,
Q803, Q804
Q833, Q834
Q863, Q864
or ambient
Trouble in 65/8Vdc
line
Trouble in G1 line and
G2 line
Replace CRT
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
RK, GK, BK
About 45V p-p
0.7Vpp
Summary of Contents for 529B
Page 1: ...ServiceManual XGA COLOR MONITOR Model 529B DAEWOO ELECTRONICS CO LTD OVERSEAS SERVICE DEPT...
Page 32: ...30 PCB LAYOUT Main PCB Component Side...
Page 33: ...31 Main PCB Solder Side...
Page 34: ...32 CRT PCB Component Side CRT PCB Solder Side...
Page 35: ...33 SCHEMATIC DIAGRAM Power Connection section...
Page 36: ...34 Control Vertical Out section...
Page 37: ...35 Horizontal section...
Page 38: ...36 Video section...
