No Remote Control Function; Usb Device Cannot Detect - Panasonic SA-AKX220PN Service Manual

7.4.

No Remote Control Function

Press the Remote Control
Power Button
to Power ON the Unit
(Ensure have Battery & New)
7.5.

USB Device Cannot Detect

Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
If Cannot
Press the Power Button
Power ON
of the Unit
(No Display)
to Turn ON the Set
NG
Check Regulator IC
(IC1005)
Measured 3.3V at Pin # 2
4
[refer to check point
NG
Change Main PCB
Press [ USB/CD] on the Set or OK
Remote Control to
Select USB A or B, Display
" USB A/B" and "NO DEVICE"
OK OK
FL Display
Control Buttons
Show "HELLO"
Change FL PCB
]
Plug-in USB Device to USB port
with Red LED indicated
(e.g. USB B) FL Display " USB B"
NG
USBB_5V at CN2503 pin #7
(USBA_5V at pin # 6)
8
[refer to check point ]
NG
Change Main PCB
22
OK
Press Remote
All Remote Control
Buttons are Working
NG
OK
Press Play
FL Display
"Music Name or Title"
NG
Change Main PCB
OK
No Problem Found
OK
No Problem
Found