Rautz HC-7852UX Service Manual - page 29
Manual is about: Digital Home Cinema System
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Trouble Shooting Guide
OK
Yes
Control Abnormal of
Disc Loading
9. MECHA CONTROL Abnormal
Check if the
data input of
IC501 is ok?
Check the
output of
IC509 is ok?
Check the
Supplied
power is ok?
Check the
interface data
is ok?
Replace IC509
Replace IC501
Check VFD
data is ok?
Replace Front PCB Ass'y.
Check data waveforn of
VFD_DATA, CLK, CS
Check Power Supply Circuit.
Check data between IC501.
No
Yes
No
Yes
No
Yes
No
No