HT-DDW785, HTP-78DW, STR-K785 - Sony Audio Service Manual (repair manual). Page 10

10

DSP Data Line

Check

Start

Pass

Pass

Auto Cal Mic

Check

END

SPK Front Left

DCAC MIC

Receiver

The preset sound field is cleared when this mode is activated.  Use
this mode before returning the product to clients upon completion
of repair.
Procedure:

1. While depressing the  2CH  button, press the power  ?/1

button to turn on the main power.

2. The message “S.F. CLR.” appears and initialization is

performed. (3 second)

The software version is displayed.
Procedure:

1. While depressing the  PRESET TUNING –  and the  <  buttons

simultaneously, press the power  ?/1  button to turn on the
main power.

2. The model name, destination and the software version are

displayed. (8 second)

Button check
Procedure:

1. While depressing the  <  and the  A.F.D.  buttons simulta-

neously, press the power   ?/1  button to turn on the main
power.
“REST 25” appears.

2. Every pressing of any button other than  ?/1  counts down

the buttons.  The buttons which are already counted once are
not counted again.

3. When all buttons are pressed “REST 00” appears.

All fluorescent segments are tested.  When this test is activated, all
segments turn on at the same time, then each segment turns on one
after another.
Procedure:

1. While depressing the  PRESET TUNING –  and the  AM

buttons simultaneously, press the power  ?/1  button to turn
on the main power.

2. All segments turn on.

3. Press either of the  VIDEO1  or  VIDEO2  or  DVD  or

SA-CD/CD  or  FM  or  AM  button.

4. Press either of the  VIDEO1  or  VIDEO2  or  DVD  or

SA-CD/CD  or  FM  or  AM  button once again.

5. Press either of the  VIDEO1  or  VIDEO2  or  DVD  or

SA-CD/CD  or  FM  or  AM  button once again. All segments
turn off.

1. While depressing the   PRESET TUNING –  and the  A.F.D.

buttons simultaneously, press the power  ?/1  button to turn
on the main power.

2. “SWP.ALL” appears. (No change while displayed.)

All preset contents are reset to the default setting.
Procedure:

1. While depressing the  AM  and the  A.F.D.  buttons simulta-

neously, press the power   ?/1  button to turn on the main
power.

2. “CLEARED” appears and switch off the set.

If an error occurs, the “Protector Display” will flash for a while and
the power is turned OFF.
Procedure:

1. While depressing the  PRESET TUNING –  and the 2CH

buttons simultaneously, press the power  ?/1  button to turn
on the main power.

2. “PROT. EVER” appears (3 seconds) and the display returns

to the “Protector Display” and the power remains ON.

1. While depressing the  <  and the  DIMMER  buttons simulta-

neously, press the power   ?/1  button to turn on the main
power.

2. “VACS OFF” appears. (8 second)

DCAC Factory Test mode have two stages:

1. DCAC DSP Data Line Checking
2. DCAC board Checking

1. When power off :

Press the three buttons   <  +  DISPLAY  +  ?/1  .
(If it doesn’t operate, please press  DISPLAY  again afetr 2
seconds.)
Afterward, press the  DIMMER  to start DCAC factory test
mode.

L

SW

C

R

SL

S

SR

SBL SB SBR

LFE

SP A 
SP B  SLEEP  OPT  COAX   MULTI CH IN  96/24

DIGITALEX

PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS

D.RANGE EQ STEREO MONO

dB

kHz

mft.

MHz

MEMORY

DIRECT

L

SW

R

S

SB

LFE

SP A 
SP B  SLEEP  OPT  COAX   MULTI CH IN  96/24

DIGITALEX

PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS

D.RANGE EQ STEREO MONO

dB

kHz

mft.

MHz

MEMORY

DIRECT

C

SL

SR

SBL

SBR

SP A 
SP B  SLEEP  OPT              MULTI CH IN  96/24

DIGITALEX

PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS

D.RANGE EQ STEREO MONO

kHz

mft.

MHz

MEMORY

DIRECT