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 2.5V at IC201 pin ?
Check the pattern from
IC501 pin to IC201
pin .
Check IC501.
Replace IC102.
Check the PN301, and then
replace the Sled Motor.
YES
YES
YES
YES
NO
NO
Replace IC201.
NO
NO
34
41
25
35
107
41
CH1
PIN34
DA0
CH2
PIN35
DA1
CH1 TP4
(/A)
(A)
(/B)
(B)
CH2 TP5
CH3 TP6
CH4 TP7
Fig. B-1. DA0 and DA1 Signals
Fig. B-2. TP4, TP5, TP6 and TP7 Signals
