Casio CD-350S Service Manual page 17

2-B3
Is waveform
at pin 1(RFO) of IC902 like that
shown in figure 19?
Is waveform at
pin 35 (TSO) of IC902 like that
shown in figure 20?
Is waveform at
pin 30 (TS20) of IC902 like that
shown in figure 21?
Is waveform at
pins 2 and 4 of IC903 like that
shown in figure 22?
Check flat cable.
Check tracking coil of pickup
(DC resistance : 8Ω).
Figure 19
B3
No
Yes
No
Yes
No
Yes
No
Yes
Figure 20
Check circuit around pins 1~5
and 41~44 of IC902.
Check circuit around pins 30~40
of IC902.
Check circuit around pins 1~5 of
IC903.
IC902 is defective.
1.5
Figure 21
— 15 —
0.1
Figure 22
1.5