Integra DTR-7.7 Service Manual

DEBUG MODE -3
DTR-7.7
This debug mode will help in analysing digital audio no sound trouble.
Check information on FL display and the related devices or circuits below.
Trouble Cause Analysis by Debug Mode
Symptom on Display
Cause
Check
"E" is displayed
No input signal to DIR
Related devices and circuits from digital
input to Q361
Displayed freq. is different
from input signal freq.
No input signal to DIR
Related devices and circuits from digital
input to Q361
Displayed format is different
from input signal format
No input signal to DIR
Related devices and circuits from digital
input to Q361
Displayed format is different
from input signal format
Input signal to DSP is no good
Related devices and circuits from Q361
to Q201
"x" is displayed
Interface between DSP and main
micro processor is no good
Related devices and circuits from Q701
to Q201
DSP outputs error to main micro
processor, which outputs mute
Q701, Q201, Q301 & related devices and
circuits
Digit No.
on FL
10
9
11
5
3
1
DIR outputs error to main micro
processor, which outputs mute
Q5701, Q201, Q361 & related devices
and circuits
11
"4" is displayed
"8" is displayed

Integra DTR-7.7 Specifications

General

Brand	Integra
Model	DTR-7.7
Category	Receiver
Language	English