Troubleshooting Guide - Panasonic SA-MAX3500PU Service Manual

7 Troubleshooting Guide

7.1. No Power ( No LED Display + No Response)
Press Power Button of Unit
or Remote Control to Turn
ON the Unit
No Display on FL Panel
Check Fuse
(F1001, F1401,
F14501) =0 ohm
Yes
Check C1403
& measured
200V or more
Yes
Check diode
(D1601)
Measured +5V
Yes
Check C1224
& measured
400V or more
Yes
Check diode D1703 &
D1705 measured
+40V
Yes
1
No
Change
SMPS
PCB
2
No
Change
SMPS
PCB
3
No
Change
SMPS
PCB
4
No
Change
SMPS
PCB
5
No
Change
SMPS
PCB
Check diode
D1702 Measured
+18V r more
Yes
Check IC2107
Measured
1.5V at Pin 3
Yes
Check
IC2108
Measured
3.3V at Pin 2
Yes
If No Display
on FL Panel
End
18
No
Change
SMPS
PCB
6
No
Change
Main
PCB
7
No
Change
Main
PCB
No
Change
Panel
(FL) PCB