參數(shù)資料
型號(hào)： SYNCMASTER170T_180T
英文描述： Monitor_ICs:GS1881 AD9884AKS-140 416S1020B MTV121P-31 MX88L282FC 3P863
中文描述： Monitor_ICs：GS1881 AD9884AKS - 140 416S1020B MTV121P - 31 MX88L282FC 3P863
文件頁(yè)數(shù)： 24/65頁(yè)
文件大小： 1211K
代理商： SYNCMASTER170T_180T
5 Troubleshooting
5-4
SyncMaster 753DF/755DF
5-1-5 H_Lin. Failure
IC201 Pin 21 voltage varies with
different H_Lin. DAC values
IC603 Pin 9 voltage varies with
different H_Lin. DAC values
Check +13 V, –10 V line.
Check some parts around IC603.
Check Q412, Q413, T402.
Yes
Yes
No
Replace IC201.
No
5-1-6 Invariable H_Size
IC401 Pin 6 voltage varies with
different B_Out DAC values
Q402 Gate output duty varies with
different B_Out DAC values
Check some parts around Q402,
IC401 Pin 3 ~ 6.
Yes
No
Check and replace IC401.
No
5-1-7 Abnormal H_Size
IC401 Pin 11 output duty
varies with different B+ offset
DAC values
Q404 Collector waveform is
right
Check and replace Q405, Q406, Q407,
Q408.
Check some parts around D409, L401.
Yes
Yes
No
Check and replace IC201.
No
WAVEFORMS
6
6
200 V (Q404, Collector)
CH1 P-P = 200V
CH1 RMS = 387.2V
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