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49
Tray open/close doesn’t work
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S701
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S701 - PG402(1) - PG401(1) - IC201(131)
Push S701 then,
IC201 (131) : Low (0V)?
Check item
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.
NG
OK
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S401
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S401 - PG402(9) - PG401(9) - IC201(132)
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S401 - PG402(10) - PG401(10) - IC201(176)
Push S401 then,
IC201 (132) or (176) : Low(0V)?
NG
OK
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IC301(38) -- IC201(59)
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IC301(41) -- IC201(60)
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IC301(40) -- IC201(65)
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IC201
Check wave form:
IC301(38)
IC301(41)
IC301(40)
NG
OK
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IC101(29) -- IC301(25)
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IC101
IC301(25) : 1.65V?
NG
OK
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IC301
Check wave form:
IC301(36)
IC301(37)
NG
OK
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IC301(36) - PG401(11) - PG402(11) - PG403(1)
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IC301(37) - PG401(12) - PG402(12) - PG403(2)
Check wave form:
PG403(1)-(2)
NG
OK
OK
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Loading motor.
Can Disc tray be moved by hand?
NG