Casio ZD-1

Pre-Adjustment Procedures
* Remove the bottom chassis assembly. (Refer pages 3, 4)
* Use the plastic screwdriver.
Equipment Required
* Oscilloscope
* Screwdriver (Plastic type)
Focus Sarvo Offset Adjustment (Figures 7 and 11)
CD ADJUSTMENTS
12
Focus Servo E-F Balance Adjustment (Figures 8 and 11)
A
B
0V
(Vref)
A=B
Step Connect Setting Adjust Result
Play the regular disc.1
See
Figure 8
VR702
Keep the button
depressed.
2
Oscilloscope CD PCB
GND
TP706
TP710
Figure 8
E-F balance signal
Step Connect Setting Adjust Result
Oscilloscope
CD PCB
Adjust VR701 for the amplitude of the waveform
at maximum.
VR702
Measuring on oscilloscope.
Play the regular disc.See
Figure 7
1
0V
>1.0V p-p
GND
TP710
TP709
Figure 7