24
B. Pick-Up doesn’t move to the inner track.
Do the signals appear at IC501
pin , ?
(Refer to Fig. B-1.)
Do the signals appear in PN301
pin?
(Refer to Fig. B-2.)
Does “H” output at IC201
pin ?
Is the 2V at IC201 pin ?
Check the pattern from
IC501 pin to IC201
pin .
Check IC501.
Replace IC101.
Check the PN301, and then
replace the Sled Motor.
YES
YES
YES
YES
NO
NO
Replace IC201.
NO
NO
150
41
25
151
145
41
CH1
PIN150
FM0
CH2
PIN151
FMS0
CH1 TP4
CH2 TP5
CH3 TP6
CH4 TP7
Fig. B-1. FM0 and FMS0 Signals
Fig. B-2. TP4, TP5, TP6 and TP7 Signals
