21
7. USB Device Cannot Detect "NO DEVICE"
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
Press "Selector"on Main Unit
or USB on remote to go
USB mode (FL Display)
NG
Plug in USB/iPod Device and
FL Display "USB/IPOD"
USB/IPOD
operating
normally
OK
OK
FL Display "USB NO DEVICE"
Check DCDC IC
(IC1101)
Measured 5.2V at Pin 1 of LB1101
[refer to check point ]
Change
IC1101
NG
Check DCDC IC
(IC1113)
Measured 5.2V at CN1101 Pin 2/3
[refer to check point ]
Change
IC1103
NG
OK
Check
NG
OK
NG
9
15
8. PC not detected "PC UNLOCK"
Change IC8008
NG
OK
Check USB PCB
Measured 5.2V at CN6100 pin 5/6
Check
USB WIRE
cable
NG
Check USB Mux IC8008
Measured 3.3V at LB8025
[refer to check point ]
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
Press "Selector"on Main Unit
or on remote to go
PC mode
NG
Plug in USB cable from PC,
FL Display "PC"
PC Playback
operating
normally
OK
OK
FL Display "PC UNLOCK"
Check USB VBUS voltage
Measured 3.6V after R8441
[refer to check point ]
OK
Change Main
PCB
NG
16
17
Check USB PC cable