參數資料
型號: DP17L*
英文描述: Monitor_ICs:S1D2506A01 S5D2501E09
中文描述: Monitor_ICs:S1D2506A01 S5D2501E09
文件頁數: 6/42頁
文件大小: 664K
1 Troubleshooting
DP17L*
1-3
1-1-3 H_Deflection Failure
Does Horizontal paluse signal
appear at at Pin 26 of IC401
Check IC401.
Yes
No
Does 20 Vp-p signal appear
at Collector of Q403
Check Q403.
No
No
Check Q402, Q404, T401.
WAVEFORMS
4
3
2.00 V (IC401, #28)
CH1 P-P = 2.00V
CH1 RMS = 5.868V
4
1.00V (IC401, #26)
CH1 P-P = 1.00V
CH1 RMS = 1.298V
5
20.0 V (Q403, Collector)
CH1 P-P = 20.0 V
CH1 RMS = 46.80V
Does PWM output signal appear
at Pin 28 (H_out) of IC401
Check IC401.
Check 12V line.
Yes
No
Does DC 12V appear at
Pin 29 of IC401
Yes
No
3
1-1-4 S Correction Failure
S1~S3 signals are right at each
frequency block
Check S1 ~ S3 signal.
Check and replace Q404, Q409, Q410,
Q411,Q414, Q415, Q416
Yes
Check and replace IC201.
No
5
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