LG LX-E330A - Page 8

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NO
NO
NO
NO
NO
NO
Laser does not light.
Is “2.5V” applied to pin80
of IC801?
Is power supplied to laser Q801?
(Q801 collector: about 1.8V)
Does laser current flow?
(R808’s voltage are 1.0V)
Is data transferred from
MICOM IC ?
Does voltage appear at IC
802 pin13, 14?
Defective MICOM.
Defective MICOM.
Defective connector.
Defective IC801, 802 .
Defective slide motor and/or
connector.
Defective LMT SW and/or
connector.
Defective Q 801 and/or laser.
Defective laser and/or
connector.
Did pickup return to
innermost circular?
Does it stop at inner pick
circular after shift?
Is defect output from LM
SW applied to pin 2 of
PN803?
R808 »1.0V
R808 «1.0V
YES
YES
YES
YES
OPEN
CLOSE
YES
YES
YES
YES
YES
YES