Panasonic SA-PMX82EB Service Manual page 21

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