(No.MB517)1-19
5.4
USB Maifunction
5.5
Tuner Malfunction (FM/AM)
Front Jack
PCB JIC-1 pin #10
voltage 5V
normal?
Front Jack
PCB JIC01 pin #7
voltage more than
2.5V?
normal?
Front
Jack PCB JIC01
pin #14,15 analog
signal normal?
Front PCB
UIC02 pin #14 voltage
5V normal?
-Check the AMP PCB
-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
NO
NO
NO
NO
YES
YES
YES
Amp PCB
Tuner pack pin No.4
voltage12V
normal?
-Check the Amp PCB SZ105
-Check the SMPS PCB SMIC44
Amp PCB
Check the by-pass
condenser EE01L,
EE01R
-CHECK THE AMP PCB
ER01R.ER01L OPNE?
-CHECK THE APM PCB
EIC!,EIC02
-REPLACE TUNER PACK
Amp PCB
Check the EIC02
PIN#1,2
-REPLACE OF EIC02
-CHECK the arround
EIC02,ER02R/L
EE10R/L
NO
NO
NO
YES
YES
YES
