Onkyo TX-SA806, Руководство по обслуживанию

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DEBUG MODE-3
DSP DEBUG MODE(3/3)
TX-SR806/SA806
Trouble Shooting by DSP DEBUG MODE (Continued)
DSP setting is failured.
Continue to display “29” to
“32”
1. Flash ROM program is no good, upgrade.
2. Flash ROM or SDRAM is broken, replace.
3. Check DSP drive clock freq. by oscilloscope.
If no signal, find out bad part connected.
4. Check audio clock to DSP by oscilloscope.
If no signal, find out bad part connected. DSP program does not run properly.
Or audio clock to DSP is no good. Continue to display “24” to
“27”, or “40” to “43”.
DSP Sequence is no good.
Connection from DIR to DSP is no good.
Interface between DSP and MPU is
no good.
Interface between DSP and MPU is
no good.
2. Check the voltage of the power supply pin of DSP.
3. Check the reset port and clock input of DSP by
oscilloscope, and find out bad part.
4. Flash ROM firmware is no good. Update.
5. DSP or MPU is broken. Replace MPU.
DSP is impossible to replace, so replace with
a new pcb.
1. Flash ROM firmware is no good, update.
2. Check DSPSDO pin of MPU by oscilloscope.
If no signal, find out bad part connected.
3. Flash ROM or SDRAM is no good, replace.
4. DSP or MPU is broken, replace the same method
as above 5.
1. Flash ROM firmware is no good, update.
2. Flash ROM or SDRAM is broken, replace.
1. Flash ROM firmware is no good, upgrade.
2. Flash ROM or SDRAM is broken, replace.
1. Flash ROM firmware is no good, upgrade.
2. Flash ROM or SDRAM is broken, replace.
Communication between DSP and MPU
is no good.
Writing from MPU to DSP is no good.
DSP program does not run properly.
Flash ROM or SDRAM is no good.
DSP program does not run properly.
Flash ROM or SDRAM is no good.
Initialize the unit.
(Press ON/STANDBY button while pushing
VCR/DVR button when the unit is powered on.) The unit was powered off during DSP
firmware updating.
This identifies IC which
outputs error
The IC outputs error to MPU.
Replace the IC chip.
DSP is impossible to replace, so replace with
a new pcb.
10
Continue to display “1”
Continue to display “03”
Continue to display “05”
Continue to display “19”
Display “21” to “23”,
then return and signal format
indicator is flashing.
Continue to display “09” to
“10”
Continue to display “2”
Continue to display “3” to ”7”
Continue to display “8” to ”F” Check -
15 20
items.
27 28
15
20
-
Symptom on FL display Cause of trouble Remedy
Digit No.
on FL
Displayed audio encoding
format is different from input
signal.
Input signal to DSP is no good.
a. No input signal to DSP. "x" is displayed
b. Interface between DSP and MPU is
no good.
14
13
1. Confirm where the digital waveform stops
between DIR and DSP by oscilloscope.
2. Q3311, P1003 or P1005 may relate.
3. Resolder pins of the bad part or replace it with
new one.
The same as above.
13
The same remedy as .
14
The same remedy as -b.
14
The same remedy as -b.
14
1. The same remedy as -b.
1. Confirm where the digital waveform stops
between MPU and DSP by oscilloscope.
2. P1003, P1004 or P1005 may relate.
3. Resolder pins of the bad part or replace it with
new one.