Troubleshooting Guide; Troubleshooting Guide For F61 And/Or F76 - Panasonic SA-PT70EB Service Manual

7 Troubleshooting Guide

7.1.

Troubleshooting Guide for F61 and/or F76

This section illustrates the checking procedures when upon detecting the error of "F61" and/or "F76" after power up of the unit. It is
for purpose of troubleshooting and checking in SMPS, MAIN/D-AMP & Main P.C.B.
7.1.1. Block Diagram
PCONT
SYS6V
DCDET
IC200
MICRO-P
SYS6V
DCDET 1
DCDET 2
SP-PROTECT
DCDET 1
SD
OTW
SD : Shut-down (Actively Low)
OTW : Over-Temperature (Actively Low)
34
SMPS P.C.B.
VDD
MAIN/D- AMP P.C.B.
SUBWOOFER (+ & -)
CENTER (+ & -)
FRONT FL+/FL-
FRONT FR+/FR-
SURROUND (SL+/SL-)
SURROUND (SR+/SR-)
MAIN/D- AMP P.C.B.
A+12V Detect
M+9V Detect
MAIN/D- AMP P.C.B.
IC403 (CENTER & SUBW)
Digital
IC405 (FL & FR)
Amplifier
IC404 (SURROUND)