Panasonic SA-PT160E - Page 88

21.2. Basic Troubleshooting Guide for SMPS/MAIN/PANEL
Problems Checking Points Checking Components
a) Check AC cord connection
(open/short)
b) Check fuse F1 on SMPS
Module P.C.B.
F1
1) No power supply to unit
c) Check supply voltage to
Main P.C.B. from SMPS
Module P.C.B. (+5V/+7V/2.7V)
H2002 Pin 1, 4, 8, 9, 11
between SMPS Module & Main
P.C.B.
d) Check cable connection
e) Check DC voltage (+9.1V) IC2903, L2909 Pin 2, 3
a) Check supply voltage (Refer
to Item 1) checking points
a) Check speaker connection
b) Check amplifier IC circuit
(audio output)
b) Check SYS6V to IC2018 IC2018 Pin 16
3) No audio output
2) No FL Display
c) Check oscillator circuit X2001, IC2018 Pin13, 16
d) Check soldering condition
* Solderability condition
IC2018, IC6901, FL6901
JK5000
IC5100, IC5200, IC5300
Pin 4, 10
b) Check supply to amplifier IC
IC5100, IC5200, IC5300
Pin 1
88
SA-PT160E / SA-PT160EB / SA-PT160EG