Casio ZD-1

3-C
Is waveform at
pin 42 (TEO) of IC701 like that
shown in Fig. 23 ?
Is waveform at
pin 44 (TE1) of IC701 like that
shown in Fig. 24 ?
Is waveform at
pin 13 (TAO) of IC701 like that
shown in Fig. 25 ?
* Check CN701.
* Check IC701.
* Check circuit around TE-Amp lines.
* VR703 adjustment is no good.
Readjust VR703.
(Refer to CD Adjustments)
* Check circuit around IC703.* Check CN701.
* VR704 adjustment is no good.
Readjust VR704.
(Refer to CD Adjustments)
* Check pickup.
No
No
No
Yes
Yes
Yes
Figure 23 Figure 24
C
100mV
50mV
22
Is pin 3 (DEFECT)
of IC701 high ?
No
Yes
* Check IC701.
Is waveform at
pin 18 of IC703 like that
shown in Fig. 26 ?
No
Yes
* Check circuit around IC701.
* Check IC701.
Figure 25 Figure 26
200mV
0.4V