Panasonic SC-UA7E, Service Manual

Page: 18 / 100

18
7 Troubleshooting Guide
7.1. No Power or No Display
7.2. Bluetooth
®
Pairing Failure
7.3. No Key Function (Touch Panel)
7.4. No Remote Control Function
Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
No Display on
FL Panel
Caution:
1. AC Cord Plug-out
2. Check Fuse(F1001) = 0 ohm
3. Check Fuse(F1401) = 0 ohm
4. Check Fuse(F1501) = 0 ohm
[ refer to check point 1 ]
Change SMPS PCB
Check Primary E-Cap (C1224)
Measured 400V or more
[refer to check point 4 ]
Change SMPS PCB
Change SMPS PCB
Change SMPS PCB
Check Standby Regulator IC
(IC2104/IC2108)
Measured 3.3V at Pin 2
[refer to check point
8 ]
OK OK
OK
OK
OK
NG
NG
NG
NG
Check Secondary Cap. (C1706)
or Secondary Diode (D1703/D1705)
Me40
Change SMPS PCB
NG
Check Primary E-Cap (C1403)
Measured 200V or more
[refer to check point 2 ] Check Secondary Diode (D1601)
Me5
[refer to check point
3 ]
Change Main PCB
NG
Check DC-DC Regulator IC
(IC2107)
Measured 1.55V at pin 3
[refer to check point
9 ]
Change Main PCB
NG
OK
If No Display on
FL Panel
Change Panel
PCB
OK
NG
[refer to check point 5 ]
Press the Po w er Button
of Unit or Remote Contro l
to Turn O N the Unit
Press [ PAIRI N G] on the S et
or Remote Contro l
Disp l a y " BLUETOOTH"
Change BT+Touch
Pane l PCB Assemb ly
N G
"PAIRI N G' w i ll disp l a y and
b l inking w hi l e handphone or other
devices are Connecting to the S et
Do the Co l d S tart
AC P l ug-out. Press and Ho l d
Po w er Button then
AC P l ug-I N , w ait to disp l a y "-------"
then w i ll OFF the S et, back to start.
N G
Change BT+Touch Pane l PCB Assemb ly
N G
option 1
option 2
The set w i ll disp l a y ed the
"CO NN ECTED" fo ll o w ed
b y "BLUETOOTH"
N o Prob l em
Found
OK
K O K O
Press the Po w er Button
on the Unit
to Turn O N the Unit
If Cannot
Po w er O N
( N o Disp l a y )
Refer to 7.1
OK
N G
Use Remote Contro l
to Turn O N the S et
FL Disp l a y
S ho w "HELLO"
OK
Press the Po w er Buttons
or Other Buttons
Check and Ensure that
Touch Pane l Connector is
Proper ly Insert
N G
OK
A ll Buttons
are Working
If Buttons are not Working
Change the Touch
Pane l PCB
N G
OK
N o Prob l em Found
Press the Remote Contro l
Po w er Button
to Po w er O N the Unit
(Ensure have Batter y & N e w )
If Cannot
Po w er O N
( N o Disp l a y )
OK
N G
Press the Po w er Button
of the Unit
to Turn O N the S et
FL Disp l a y
S ho w "HELLO"
OK
Press Remote
Contro l Buttons
Change Remote Contro l
N G
OK
A ll Remote Contro l
Buttons are Working
OK
N o Prob l em Found
Refer to 7.1
Change IR S ensor
/ Pane l PCB
N G
N o Prob l em Found
OK