Onkyo HTR 667 Service Manual

Page 1

HT-R667

Ref. No. 4104

ONKYO SERVICE MANUAL 2"

7.1-CH HOME THEATER RECEIVER
MODEL HT-R667

Black model

B MDD 120V AC, 60Hz

SAFETY-RELATED COMPONENT
WA R N I N G ! !

COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.

MAKE LEAKAGE-CURRENT 0R RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE To THE CUSTOMER.

ONKYO®

IMAGINATIVE SIGHT & SOUND

Page 83

DEBUG MODE-3
DSP DEBUG MODE-3

Trouble Shooting by DSP DEBUG MODE (Continued)

Digit No.
on FL

Symptom on FL display

Cause of trouble

Remedy

Continue to display "1"

(7)

Continue to display "8" to "F"

Interface between DSP and MPU is no good.

DSP Sequence is no good.

The same remedy as @ -

Check® items.

(8) Continue to display 03

Communication between DSP and MPU
is no good.

1. The same remedy as® -b.

. Check the voltage of the power supply pin
of DSP.

. Check the reset port and clock input of DSP by
oscilloscope, and find out bad part.

. Flash ROM firmware is no good. Update.

. DSP or MPU is broken Replace MPU.
DSP is impossible to replace, so replace with
a new PC board.

Continue to display "05"

Writing from MPU to DSP is no good.

1. Flash ROM firmware is no good, update.

. Check DSPSDO pin of MPU by oscilloscope
If no signal, find out bad part connected.

. Flash ROM or SDRAM is no good, replace.

. DSP or MPU is broken, replace the same
method as above 5.

Continue to display "09" to "10"

DSP program does not mn properly.
Flash ROM or SDRAM is no good.

1. Flash ROM firmware is no good, update.
2. Flash ROM or SDRAM is broken, replace.

Continue to display "19"

The unit was powered off during DSP
firmware updating.

Initialize the unit.
(Press STANDBY/ON button while pushing
VCR/DVR button when the unit is powered on)

Display "21 " to "23",
then retum and signal format
indicator is flashing.

DSP program does not mn properly.
Flash ROM or SDRAM is no good.

1. Flash ROM firmware is no good, upgrade.
2. Flash ROM or SDRAM is broken, replace.

Continue to display "24" to
"27", or "40., to "43"

DSP program does not run properly.
Or audio clock to DSP is no good.

1. Flash ROM program is no good, upgrade.

. Flash ROM or SDRAM is broken, replace.

. Check DSP drive clock freq. by oscilloscope.
If no signal, find out bad part connected.
Check audio clock to DSP by oscilloscope.
If no signal, find out bad part connected.

Continue to display "29" to "32"

DSP setting is failured.

. Flash ROM firmware is no good, upgrade.
. Flash ROM or SDRAM is broken, replace.

Displayed audio encoding
format is different from input
signal.

Input signal to DSP is no good.

. Confirm where the digital waveform stops
between DIR and DSP by oscilloscope.

. Q202, P8001 may relate.

. Resolder pins of the bad part or replace it with
new one.

"x" is displayed.

a. No input signal to DSP.

b. Interface between DSP and MPU is
no good.

The same as above.

1. Confirm where the digital waveform stops
between MPU and DSP by oscilloscope.

2. P8001, P8002, P8003 may relate.

3. Resolder pins of the bad part or replace it with
new one.

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 PC borad.

606