Samsung SyncMaster 1000s Service Manual page 32

7 Troubleshooting
7-1-10 Tilt Failure
Check tilt connector connection at
CN405.
Does the IC201 Pin 6 output duty
vary with different DAC values?
Yes
Does the IC404 Pin 3 output vary
with different DAC values?
Yes
Check and replace CRT.
7-1-11 V Deflection Failure
Is the +14 V, –12 V line DC
output correct?
Yes
Does the IC403 Pin 23 output
17
waveform match #17?
Yes
Does the IC301 Pin 1 input
8
waveform match #8?
Yes
Does the IC301 Pin 5 output
7
waveform match #7?
Yes
Check V-DY connector connection
CN301.
7-6
No
Check and replace IC201.
No
Check and replace IC404, +12 V line
and –12 V line.
No
Refer to 7-1-1 No Power Supply.
No
Check and replace IC403.
No
Check and replace IC301.
No
Check and replace some parts
around IC301.
WAVEFORMS
54.8 V (IC301, #5)
7
CH1 P-P = 54.8 V CH1 RMS = 6.4 V
8 2.62 V (V_RAMP)
CH1 P-P = 2.62 V CH1 RMS = 0.45 V
17 4.16 V (IC403, #23)
CH1 P-P = 4.16 V CH1 RMS = 3.5 V
SyncMaster 1000s (CGP1607L)