LG LAC-M5600, Руководство по обслуживанию

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- 2-3 -
3. Initial reading is not carried out.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES (with disc)
NO NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Slide motor moves.
(With disc)
Spindle motor turns.
(Refer to FIG3.)
Does RF waveform
appear at IC506 Pin
(Refer to FIG4.)
Check the Voltage change of
PN502 Pin (6.4~6.8V).
Check the Voltage change of PN506
Pins , , , . (1.4V~1.8V).
Check the Data transmission
from IC510 pins , ,
(Refer to FIG7.)
Check the Data transmission
from IC510 pins , ,
(Refer to FIG8.)
Check the TRVP
Voltage.
(IC506 Pins )
Check the change of
SL +, SL – Voltage.
(IC504 Pins , )
Does FA+ waveform appear
at IC504 Pin ?
(Refer to FIG1.)
Laser light check A ?
Defective contact
PN501 or PICK-UP
Defective IC504
Defective IC506
Defective IC506
Defective MICOM
Defective IC506
Defective
Connector. (PN502)
Does TE waveform appear at
R517? (Refer to FIG2.)
Is rotation normal?
Is there no dropout of RF signal?
Defective IC506 or
PICK-UP
1
42
26 76 77 42
58
48
23
13
15
14
57 71
70 72