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