Table of Contents
Advertisement
Repair Item 2-A1: Laser does not emit.
Check circuit around Q107.
Check flexible PCB connect.
Q107 is defective.
Pickup is defective.
Repair Item 2-A2: Object lens of pickup unit does not move up and down.
A2
Is the waveform
IC101 pins 26 and 27 like
that shown in fig. 5 ?
Yes
Pickup is defective.
A1
Is Q107
Base=2.8 V ?
(Play)
Yes
No
Is the waveform
at IC102 pin 6 (FOD) like
that shown in fig. 6 ?
Check circuit and IC101.
IC101 is defective.
7
Check circuit around IC104 pins 1, 2 and 3.
Check circuit around IC103 pins 7, 8 and 9.
No
Check around IC102 pins 37, 36 and IC101
pin 44.
IC102, IC103 or IC104 is defective.
1.8 V
Figure 5
No
Yes
Check soldering of IC102 pin 6.
IC102 is defective.
1 V
Figure 6
Advertisement
Table of Contents
