DOWNLOAD Sony HT-DDW7500 / HT-DDW8500 / STR-KM7500 Service Manual ↓ Size: 6.95 MB | Pages: 80 in PDF or view online for FREE

•  This set can be disassembled in the order shown below.

Note:  Follow the disassembly procedure in the numerical order given.

1

u 8)

4

2

u 8)

2

u 8)

3

3

ql

1

u 8)

6

u 8)

7

u 8)

2

u 8)

3

u 8)

4

u 8)

5

u 8)

qa

qd

ql

qk

qj

qh

qg

q;

9

qs

qf

8

w;

1

2

4

5

3

6

× 8)

× 8)

× 8)

× 8)

6

9

4

2

5

5

3

1

u 8)

7

u 8)

8

TUNER  AM  STEP  CHANGE (9  kHz/10  kHz)  MODE
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1.  Press the [

?/1

] button to turn on the main power. 

2.  Press TUNER repeatedly to select AM. 
3. Press 

AMP 

MENU.

 

“1-LEVEL” appears on the display.

4. Press 

V/v repeatedly to select “4-TUNER”.

5. Press

 

 

or 

b to enter the menu.

6. Press 

V/v repeatedly to select “AM STEP”.       

7. Press

 

 

or 

b to enter the parameter.

8. Press 

V/v repeatedly to select the AM tuning scale you want.

FL  CHECK  MODE
All fl uorescent 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.  When pressing the [MULTI STEREO] and [A.F.D.] buttons, 

press the [

?/1

] button to turn on the main power. 

2.  All segments and [MULTI STEREO] and [NIGHT MODE] 

LED turn on.

3.  Turn the [INPUT SELECTOR] dial. 
4.  Test pattern 1 turn on, [MULTI STEREO] LED turn on and 

[NIGHT MODE] LED turn off.

5.  Turn the [INPUT SELECTOR] dial once again. 
6.  Test pattern 2 and [MULTI STEREO] LED turn off and 

[NIGHT MODE] LED turn on .

7.  Turn the [INPUT SELECTOR] dial once again. All segments 

and LED turn off. 

8.  Every turning of the [INPUT SELECTOR] dial turns on each 

segment one after another on the same order.

S.F.  CLEAR  MODE
The preset sound fi led is cleared when this mode is activated. Use 
this mode before returning the product to clients upon completion 
of repair.
Procedure:
1.  While pressing the [A.F.D.] button, press the [

?/1

] button to 

turn on the main power. 

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

formed. 

VERSION  CHECK  MODE
When this mode is used the model, the destination and the software 
version number are displayed.
Procedure:
1.  While pressing the [NIGHT MODE] and [GAME] buttons, press 

the [

?/1

] button to turn on the main power. 

2.  The model, the distination and the software version number 

appear. 

KEY  CHECK  MODE
This mode is used to check the key.
Procedure:
1.  While pressing the [MUSIC] and [MOVIE] buttons, press the 

[

?/1

] button to turn on the main power. 

2.  The message “REST 06” appears.
3.  Every pressing of any button other than the [

?/1

] button counts 

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

4.  When all buttons are pressed, the message “REST 00” ap-

pears.

SWAP  ALL MODE
When this mode is used, output the audio signal of front L/R chan-
nel to all channel.
Procedure:
1.  While pressing the [MULTI STEREO] and [MOVIE] buttons, 

press the [

?/1

] button to turn on the main power. 

2.  The message “SWP. ALL” appears.
3.  After a few seconds, “SWAP” will appear (No change while 

displayed).

SHIPMENT  MODE
All preset contents are cleared when this mode is activated.  Use 
this mode before returning the product to clients upon completion 
of repair.
Procedure:
1.  While pressing the [NIGHT MODE] and [MULTI STEREO] 

buttons, press the [

?/1

] button to turn on the main power. 

2.  The message “CLEARING” appears.

DCAC  FACTORY  TEST  MODE
DCAC Factory Test mode have two stages:
1.  DCAC DSP Data Line Checking 
2.  DCAC board Checking

1.  When power off : 
 

While pressing the [GAME] and [MOVIE] buttons, press the 
[

?/1

] button to turn on the main power .

 

“DCAC  FTM” appears.  

 

Afterward, press the [NIGHT MODE] to start DCAC factory 
test mode.

k Hz   DTS-ES
dB 96/24NE0:6
MHz

dB 96/24

dB 96/24