
4-1
Spindle motor does not move
Yes
Yes
No
No
No
No
Yes
Check whether “RFA5V”
(+5V) voltage is normal.
Correct connection
Check the RFA5V power
supply
Check/Replace Q7
ǃ
Q8.
Check/ Replace U1.
Have no to focus
1.
Check U1 42pin FOO signals
2. If there are F+, F-, T+ and T-
signals output from U2.
Check/Replace the loader
Yes
Yes
No
Go
Check whether laser voltage
(2V for VCD & 2.2V for DVD)
on Collector of Q7 and Q8
Check the FFC connection
between 24P and the loader.
1. Whether voltage on pin 44 of U1
varies between 0 and 3.3V (3.3V
for VCD and 0V for DVD),
2. Whether peripheral components
are eroded or badly soldered.
Trouble shooting chart
Motor no move