LG CD-372A Service Manual page 12

C
YES
Is FSL signal Output?
IC601 pin13
YES
Is FEO signal output at IC601
Pin31 ?
FEO
YES
Is SMDS signal output
by IC602 Pin13 ?
Is SMPD signal output by
IC602 Pin12 ?
YES
Has voltage at disc motor?
At start
YES
NO
NO
NO
NO
- 2-7 -
• IC701 defective.
• Pick-up defective.
• Connector defective.
• IC 601 defective.
• Pattern defective between
• IC602 Pin18 19 20 21 and
IC701
• IC601, 603 defective.
• Surrounding circuitry
defective.
• Disc Motor defective.
• Connector defective.
When Fok focus
Servo Conform
by FEO signal.