LG GDR-8161B Service Manual page 45

LED doesn't OFF
When a power supply is
switched on.
Pick-up not slide to TOC area.
Check waveform :
TE
IC101(18)
Check waveform :
TD
IC301(28)
Check waveform :
TRN
PG101(3)
TRP
PG101(4)
Check waveform :
ARF
IC201(98)
NARF
IC201(99)
Check waveform :
ARF
IC101(31)
NARF
IC101(30)
A check waveform :
IC101(57)
D
IC101(58)
C
IC101(59)
E
IC101(60)
NO
YES
NG
OK
NG
OK
NG
OK
OK
NG
OK
NG
NG
OK
Note : When the circuit number is written, check parts and
soldering including a nearby circuit.
When two or more pin numbers are indicated by the
party, check signal-line including a nearby circuit.
Check item
Refer
"Pick up not slide"
• IC101
• Pickup unit
• IC101(18) -- IC201(111)
• IC201(120) -- IC301(28)
• IC201
• IC301(30) -- PG101(3)
• IC301(31) -- PG101(4)
• PG101 & connection
• IC301
• IC201
• IC101(31) -- IC201(98)
• IC101(30) -- IC201(99)
• IC101 -- PG101
• PG101 -- Pickup unit
• Pickup unit
• IC101
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