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38
SAMPO CORPORATION
TROUBLE SHOOTING OF LG- INVERTER ( DIVTL0023-D22- -)
9-2 HIGHT VOLTAGE PROTECTION:
FAIL
PASS
9-3 OUTPUT CURRENT ABNORMALITY:
FAIL
PASS
1. SHORT R30 OPEN LOAD
2.
TEST C14 INPUT POINT
VOLTAGE Vh=1500
±
150V rms
TO CHANGE ON
PT1 OR PT2
FUNCTION TEST OK!
1. CHECK ON C6 FREQUNCY
&CHIP&IC CPIP
2. OSCILLATOR
FREQUNCY
RANGE = 100 ~ 250 KHZ
TO CHANGE ON C6
CHIP OR IC CHIP
FUNCTION TEST OK!
Summary of Contents for VL5A9DA
Page 1: ...SERVICE MANUAL LCD Monitor VL5A9DA...
Page 34: ...34 SAMPO CORPORATION TROUBLE SHOOTING OF LG INVERTER DIVTL0023 D22 7 CIRCUIT DIAGRAM...
Page 43: ...43 SAMPO CORPORATION TROUBLE SHOOTING OF CPT INVERTER DIVTL0026 D22 7 CIRCUIT DIAGRAM...
Page 52: ...52 III ADAPTER SCHEMATIC Part no 80AL15 2 LI...
Page 87: ...87...
Page 88: ...88 10 PCB LAYOUT...