LG BPM55 - Page 57

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ELECTRICAL TROUBLESHOOTING GUIDE
2B
Power On.
Check IC150, IC151,
IC152, IC153 and adapter.
Proper display
cable connect.
Replace X501.
“LG Logo”
display on monitor
OK?
“LG Logo”
display on monitor
OK?
2A
IC501 Vcc
1.2VA, 3.3VA, 3.3V,1.5V
OK?
Display
cable connection
OK?
X501
27.000 MHz
OK?
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
Check IC152 pin4.
Replace IC602
(NAND flash).
Replace IC501 MPEG IC
or IC601.
IC601
Vcc 1.5 V OK?
Signal
NF_ALE, NF_CLE
OK?
NO
NO
YES
YES