3-8
ONE POINT REPAIR GUIDE
7. IF NOT BOOTING WHEN YOU TURN ON THE SET.
7-1. IC103 (NO 3.3 VA)
7-1-1. Solution
Replace IC103 on MAIN board.
7-1-2. How to troubleshoot (Countermeasure)
1) Check 3.3 VA of IC103 Pin48 (VIN).
2) If 3.3 VA is abnormal, follow the stage 5-1 at the previous page.
3) If 3.3 VA of IC103 Pin48 (VIN) is OK, check the EEP_CLK (Pin1), EEP_DAT (Pin2) signal.
If signal is abnormal change the IC103.
4) If the EEP_CLK (Pin1), EEP_DAT (Pin2) signals are OK, check the IC100 Pin8(VCC / 3.3 VA).
If Pin8 (VCC / 3.3 VA) is OK, change the IC100.
7-1-3. Service hint (Any picture / Remark)
< Main board bottom view >
< Main board top view >
IC103
IC103
IC100
IC100
Содержание NP8340
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Страница 41: ...3 22 3 MPEG IC501 MT8506 XTAL 27 MHz 6 IC501 MT8506 WE IC501 MT8506 CLK 7 8 6 7 8 ...
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