Denon RCD-M39 Service Manual page 49

2.4. iPod/USB PLAY
Check Power Supply Voltages for USB UNIT.
FRONT B'D
• [JK83 ] :1pin USB+5V
MCU_CD B'D
• [IC43] : 1pin +5VD_USB
• [PMMO] : 6,7pin USB_5V
USB_DC_TO_DC B'D
• [PMUO] : 6,7pin USB_5V
Check Data input from USB UNIT
FRONT B'D
• [JK83] : 2,3pin +D,-D
Refer to 2.1. CD PLAY
OK
OK
Check Soldering.
• [CBFF] : 1pin USB+5V on FRONT B'D
• [CWMF] on MCU_CD B'D
NG
• [PFUN] : 6pin DC_9V on USB_DC_TO_DC B'D
• POWER B'D
Check Part
• [IC43] on MCU_CD B'D
• [IC32] on USB_DC_TO_DC B'D
NG Check Soldering.
• [CBFF] : 2,3pin +D,-D on FRONT B'D
• [CWMF],[IC41] on MCU_CD B'D
49