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5.1.3 USB Malfunction
Front Jack
pcb UIC03 pin#10
voltage 5V
Front Jack
pcb UIC03 pin #7
voltage more than
2.5V? or normal?
Front jack pcb
JIC01 pin #14,15
analog signal
UIC02 pin #14
voltage 5V
Check the amp pcb
5.1.4 Compact Disc Player
CD playing N.G
CD pack
5V,8V(motor)
normal?
1. CD pack to amp pcb
8 pin wire check
(CW106)
2. Amp pcb 5V,8V
supply check
1-12 (No.MB508)
NO
normal?
YES
NO
YES
NO
normal?
YES
Front pcb
NO
normal?
YES
Roulette
operating?
Check
pickup LD
LD and sied
operating?
Spindle
operationg?
1. Replace IC101
2. Replace IC201
Check the USB cable
Check the front pcb JIC01
pin #4 voltage
Check the oscillator
frequency 12MHz
Replace of JIC01
Check the amp pcb
EIC01 function IC
1. Mecha reset
2. IC401 8V check
3. Mecha to CD pcb 8 pin cable check
4. CD pcb to front pcb 22 pin cable check
1. Pickup to CD pcb 6 pin wire check
2. Replace pickup
1. Check the Q302 output 3.3V
2. Check the IC101 pin No.6 voltage 3.3V
3. Check the IC301 pin No.21,22 voltage 8V
1. Check the IC201, JW11 voltage 1.2V
2. Check the Q303 output 2.0V
3. Check the IC201 pin No.87 reset normal?
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