22
B. Pick-Up doesn’t move to the inner track.
Do the signals appear at
IC401 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 1.4V at IC201 pin ?
Check the pattern from
IC401 pin to IC201
pin .
Check IC401.
Check the R290, R291
and C290 and then
replace IC103.
Check the PN301, and then
replace the Sled Motor.
YES
YES
YES
YES
NO
NO
Replace IC201.
NO
NO
94
41
25
95
5
41
CH1
PIN94
DA0
CH2
PIN95
DA1
CH1 TP4
CH2 TP5
CH3 TP6
CH4 TP7
Fig. B-1. DA0 and DA1 Signals
Fig. B-2. TP4, TP5, TP6 and TP7 Signals
