LG S62S1-W Service Manual

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ELECTRICAL TROUBLESHOOTING GUIDE
4. SYSTEM PART
MAIN BOARD
TIMER BOARD
Power On.
System part OK.
4A
4A
Replace IC101 UPD78F1165.
Replace IC501 MT8560 or
IC502, IC503.
Proper assemble MAIN and
FRONT PCB OK?
Check DIS301.
“WELCOME”
Display on FLD OK?
“LG Logo”
Display on monitor OK?
“LG Logo”
display on monitor oK?
IC101
3.3VA_MICOM, 3.3 V OK?
IC501 VCC 1.2 V, 1.5 V,
3.3 V OK?
3.3V, FL(+), FL(-) OK?
X101
20.000 MHz OK ?
X501
27.000 MHz OK?
IC504
NF_ALE, NF_CLE OK?
VFD_STB, VFD_CLK,
VFD_RX OK?
Check D101 and SMPS board.
Check IC155, IC150, IC151
and SMPS board.
Check Q303, Q308 and
SMPS board.
Replace X101.
Replace X501.
Replace IC504. (NAND Flash)
Assemble properly.
Check IC101 and CN305.
NO
NO
NO
NO
NO
NO
NO
NO
NONO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

LG S62S1-W Specifications

General

Brand	LG
Model	S62S1-W
Category	Home Theater System
Language	English