Electrical Troubleshooting Guide; Disc Loading - LG LAD-9600 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

1. DISC LOADING

Is disc loaded normally ?
YES
Is The screen scrolled in uni-
form direction when don't press
Touch Panel at Navi mode?
YES
Continue
NO
Normal loading motor signal?
Normal loading SW signal?
NO
Normal sled motor driver
power ?
Normal sled motor drive
signal ?
Normal limit SW signal ?
4-2
NO
YES
NO
NO
YES
NO
YES
NO
Check IC302 pin 2, 3,
CN303 connectivity and
Polarity (Figure 1, 2)
Check CN202 pin 4 and
IC201 pin 1
Check IC301 pin 43
Check IC301 pin 6, 7, CN301
pin 1, 2, 3, 4 (Figure 3, 4)
Check CN302 pin 13