參數(shù)資料
型號(hào): PN22N*
英文描述: 10A High Efficiency DC/DC µModule; Package: LGA; No of Pins: 104; Temperature Range: -40°C to +85°C
中文描述: Monitor_ICs:XC62FP3302 61CC4202 KA555D/TR RYC8220 - 200萬FST3257 52742 S5D2501E19 - D0 52324 33262 TDA16850 7045
文件頁(yè)數(shù): 26/98頁(yè)
文件大?。?/td> 2244K
5 Troubleshooting
5-8
PN22N*
IC102 Pin 15 input exists and
varies with different patterns
Check and replace
QS204 and QS205.
Input full white pattern to monitor.
Yes
No
T501 Pin 8 output exists
Check and replace T501.
Yes
No
IC102 Pin 15 intput exists and
varies with different patterns
Check and replace IC102.
Yes
No
Done
5-1-14 ABL Failure
5-1-15 Dynamic Focus Failure
IC503 Pin 3 and CN950 Pin 11
output are right
Check and replace ICS202 and IC950.
Yes
No
Some parts around Q551,
Q552, Q553, Q554, and
IC503 are right
Replace failed part.
Yes
No
Some parts around T502 are right
Replace failed part.
Check the connection between FBT
Pin 13 and CRT Socket PCB.
Yes
No
31
WAVEFORMS
31
IC503 #3
CH1 RMS = 1.770V
Check CN204.
Yes
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