DOWNLOAD Sony HT-DDW2500 / STR-KM2500 Service Manual ↓ Size: 3.7 MB | Pages: 54 in PDF or view online for FREE

× 8)

RB five screws

× 8)

RT screw (BVTP3 × 8)

× 8)

× 8)

RE back panel block

× 8)

× 8)

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 [INPUT MODE] and [TUNING MINUS] 

buttons, press the [

?/1

] button to turn on the main power. 

2.  All segments turn on.

3.  Turn the [INPUT SELECTOR] dial. 
4.  Test pattern 1 turn on.

5.  Turn the [INPUT SELECTOR] dial once again. 
6.  Test pattern 2 turn on.

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

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 soft-
ware version number are displayed.
Procedure:
1.  While pressing the [INPUT MODE] and [TUNING MODE] 

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 [INPUT MODE] and [MUSIC] buttons, 

press the [

?/1

] button to turn on the main power. 

2.  The message “REST 08” 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
The signal will be swapped to all channels so that all speakers 
will have sound output.
Procedure:
1.  While pressing the [TUNING MODE] and the [DISPLAY] 

buttons simultaneously, press the power [

?/1

] button to turn 

on the main power.

2.  The message “SWP.ALL” appears.

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 [TUNING MINUS] and [DISPLAY] buttons, 

press the [

?/1

] button to turn on the main power. 

2.  The message “CLEARING” appears.

Procedure:
1.  Turn on the set.
2.  Input the following signal from signal generator to FM an-

tenna input directly.

Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation 

: 75 kHz

Modulation 

: 1 kHz

ANT input 

: 1 kHz

Note:  Use 75 ohm coaxial cable to connect signal generator and the set. 

You cannot use video cable for checking.

 

Use signal generator whose output impedance is 75 ohm.

3.  Set to FM tuner function and scan the input FM signal with 

automatic scanning.

4. Confi rm that input frequency of A, B and C are detected and 

automatic scanning stops.

When the station signal is received in good condition, automatic 
scanning stops.

RE-BOX  CLASSIFICATION  TEST  MODE
Procedure:
1.  While pressing the [MOVIE] and [DISPLAY] buttons, press 

the [

?/1

] button to turn on the main power.

2.  The message “R.BOX[][][]XX” appears. 
 

XX: times set powered on

VACS  CONTROL  TEST  MODE
The VACS feature of the amplifi er is turned off purposely.
Procedure:
1.  While pressing the [INPUT MODE] and [MOVIE] buttons, 

press the [

?/1

] button to turn on the main power.

2.  The message “VACS OFF” appears.

* Either the 9 kHz step or 10 kHz step can be selected for the AM 

channel step.

* Procedure:
Turn the [INPUT SELECTOR] control to set AM and press the 
[

?/1

] button to turn off the main power.

While depressing the [TUNING MODE] button, press the [

?/1

] 

button to turn on the main power.
Either the message “9k STEP” or “10k STEP” appears for a 
moment and select the desired step.

* The state that the set is used is memorized.
* Procedure:

1.  While depressing the [INPUT MODE]  and the [A.F.D.] 

buttons simultaneously, press the [

?/1

] button to turn on the 

main power.

2. “HISTORY” 

appears.

3.  Each time the [

r

] / [

R

] buttons on the remote commander is 

pressed, the item is switched in order as follows.

Protector Count

COUNT XX

Total single power on time

SXXXHXXM

Sound Field

SND FLD

Input function

FUNCTION

Input Mode

INP MODE

Digital Select

DIGI IN

Stream information

STREAM

Signal confi guration

CO XXXXX

Headphones

HP  XXX

Volume

VOL XXX

Bass Setting

BASS XXX

Treble Setting

TREB XXX

Front Level Setting

F  XXX

Subwoofer Level Setting

SW XXX

Total power on time

TXXXHXXM

Muting Status

MUTE XXX

Power on counter  (Rebox test mode)

P.W.   XXX