No Output Sound - Panasonic SA-VKX65GA Service Manual

7.6.

No Output Sound

DVD/CD Play
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
USB Play
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
Bluetooth Play
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
Tuner Mode
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
HDMI Output
Plug 1 side HDMI terminal of
HDMI cable to VKX65/25 HDMI
output jack & plug the other
side HDMI terminal of HDMI
cable to HDMI Jack's TV
Note :
1. VKX65/25 in any mode
2. TV in HDMI mode
AV Output
Plug 1 side HDMI terminal of
HDMI cable to VKX65/25 HDMI
output jack & plug the other
side HDMI terminal of HDMI
cable to HDMI Jack's TV
Note :
1. VKX65/25 in any mode
2. TV in AV mode
OK
Press Play
DVD/CD Mode
FL Display "Track & Count"
NG
Check CD Mechanism /
Traverse Unit
Insert USB Thumdrive
OK
FL Display "USB"
USB Mode
Press "Play"
NG
Check USB device
OK
Press Play
Bluetooth Mode
FL Display "BLUETOOTH"
NG
Re-connect Bluetooth
into the Device
OK
FM/AM Mode
Search for Tuner Signal
NG
Check FM Antenna
Wire Connection
OK OK
searching for video Output Video &
& audio data
Sound
NG
Note :
1. Choose "TV mode" at TV to make
sound come out from TV
PW_+5VDVD
2. Choose "Home Theater Mode" to
10
[refer to check point ]
make sound come out from VKX65/25
speaker
NG
Change Back-End
PCB
OK OK
Output Video &
searching for video
Sound
& audio data
NG
Note :
1. Choose "TV mode" at TV to make
sound come out from TV
PW_+5VDVD
2. Choose "Home Theater Mode" to
10
[refer to check point ]
make sound come out from VKX65/25
speaker
NG
Change Back-End
PCB
OK OK
Output Sound
NG
Check
Main PCB
Checking Points:
1) IC4001 (DSP IC) pin 4 (I/P) & pin 27-30 (O/P) PWM signal
2) IC4001 (DSP IC) pin 41/42 for OSC signal
3) IC4803 pin 43 (BCK), 44 (WCK), 45 (SCDO)
4) IC6000 (Power Amplifier) I/P (pin5,6,14,15) and O/P pins (32,35,39,40)
5) IC6000 pin 30/31/36/37 for +32V, pin 1/2/22 for +12V
O K O
Output Sound
NG
Check Main PCB and
USB P.C.B connection
OK OK
Output Sound
NG
Check BT P.C.B on
Main PCB
OK OK
Output Sound
NG
Check IC52 on
Main PCB
30
No Problem
Found
K
No Problem
Found
No Problem
Found
No Problem
Found