Onkyo TX-SR804 Service Manual page 9

DEBUG MODE -3
Trouble Cause Analysis by Debug Mode
This debug mode will help in analysing digital audio no sound trouble.
Check information on FL display and the related devices or circuits below.
Digit No.
Symptom on Display
on FL
"E" is displayed
1
Displayed freq. is different
3
from input signal freq.
Displayed format is different
5
from input signal format
Displayed format is different
9
from input signal format
10 "x" is displayed
"4" is displayed
11
11 "8" is displayed
Cause
No input signal to DIR
No input signal to DIR
No input signal to DIR
Input signal to DSP is no good
Interface between DSP and main
micro processor is no good
DSP outputs error to main micro
processor, which outputs mute
DIR outputs error to main micro
processor, which outputs mute
Check
Related devices and circuits from digital
input to Q361
Related devices and circuits from digital
input to Q361
Related devices and circuits from digital
input to Q361
Related devices and circuits from Q361
to Q201
Related devices and circuits from Q701
to Q201
Q701, Q201, Q301 & related devices and
circuits
Q5701, Q201, Q361 & related devices
and circuits
TX-SR804/804E