Casio CD-350S Service Manual page 19

4. Selected music cannot be searched smoothly.
Press the play key.
Is waveform
at pin 35 (TSO) of IC902 like that
shown in figure 23?
Press the "
Is waveform at pins
36~37 and 29 of IC701 like that
in figure 24?
Is waveform at pins
2 and 4 of IC903 like that shown
in figure 25?
Check gear and mechanism of sled motor.
Check lens of pickup.
VREF-TEO
A
B
Figure 23
4
(PAUSE)
No
Yes
" or " " key.
No
shown
Yes
No
Yes
5 V
VREF
A=B
A+B>1.3
Check 100mV PP waveform at pins
3 and 8 of CN901.
Check pins 4 and 5 of IC901.
Check pickup.
Check R-SKIP and F-SKIP.
Check wire connector (CN902).
Check pins 29 and 36~37 of IC701.
Check voltage of IC903.
Check flat cable.
0 V
Figure 24
— 17 —
2.5 V
Figure 25