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7.4.
No Remote Control Function
Press Remote Control
Power Button
Power ON
to Power ON the unit
(No Display)
7.5.
USB Device Cannot Detect
Press Power Button
of Unit or Remote
Control
to Turn ON the Unit
7.6.
No Output Sound
CD Play
Press Power Button
of Unit or Remote
Select
Control
CD Mode
to Turn ON the Unit
USB Play
Press Power Button
of Unit or Remote
Select
Control
USB Mode
to Turn ON the Unit
Bluetooth Play
Press Power Button
of Unit or Remote
Select Bluetooth
Control
Mode
to Turn ON the Unit
Tuner Mode
Press the Power Button
of Unit or Remote
Select
Control
FM Mode
to Turn ON the Unit
Noted: DAB+/FM mode
(For UX102 only)
Press the Power Button
If Cannot
of the Unit
to Turn ON the Set
NG
Check Regulator IC
(IC1005)
Measured 3.3V at Pin 2
4
[refer to check point
NG
Change IC1005
Press [USB/CD] on the Set or
Remote Control to
Select USB, Display
" USB" and "NO DEVICE"
OK
OK
Press Play
Output Sound
FL Display " Track & Count"
NG
NG
Check IC2001
Output I2S
Check CD Mechanism
Pin81-83
NG
Change IC2001
O
K
OK
Insert USB Thumdrive
Output Sound
FL Display "USB"
Press "Play"
NG
NG
Check Pin 97 and
Change USB Thumdrive
Pin 98
at IC2001
OK
OK
Press Play
Output Sound
FL Display "BLUETOOTH "
NG
NG
Check IC2001
Re-connect Bluetooth
(Pin 101-103,
into the Device
105-108)
OK
OK
Search for Tuner Signal
Output Sound
NG
NG
Check IC2001
Check the Antenna
(Pin 110-112,
Wire Connection
Pin 73, 74)
OK
OK
FL Display
Press Remote
Show "HELLO"
Control Buttons
NG
Check Panel PCB
]
OK
Plug-in USB Device to USB port
FL Display "USB"
NG
USB_5V at IC2501 pin #1
8
[refer to check point
]
NG
Change IC2501
OK
No Problem
Found
OK
O
K
No Problem
Found
OK
OK
No Problem
Found
OK
OK
No Problem
Found
OK
19
OK
All Remote Control
Buttons are Working
O
K
Press Play
FL Display
"Music Name or Title"
NG
Change Pin 97 & Pin 98
at IC2001 on
Main PCB
OK
Check IC6000
Check IC6500
Speaker output
PWM output
Pin27/32/35/39
Pin27-30
NG
NG
Check Pin 35, 40
Check
at IC6500
IC1005
OK
OK
Check
Check Pin 41, 42
IC2001
at IC6500
NG
Change X6500
Change IC6000
OK
No Problem
Found
O
K
No Problem
Found
NG
NG
Check +12V
Check IC1002
at Pin 1, 12
at IC6000
OK
NG
Check +32V
Check SMPS
at Pin 29, 36
Module
at IC6000
OK
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