DSK-GTX999, HCD-GTX999 - Sony Audio Service Manual (repair manual). Page 14

Subwoofer level setting and check mode.
Procedure:
1.  Press the [

?/1

] button to turn the power on.

2.  Press three buttons of [TUNING 

−  l m], [CHORUS], 

and [,] simultaneously.

3.  The message “SWxxdB AD

∗∗∗” or “SW OFF AD∗∗∗” is dis-

played. 

 

xx: 0, 4, 7, 10

 

∗∗∗: 0∗∗ to 1∗∗ (subwoofer level VR)

4.  To release from this mode, do the step 2 again.

The CDDB version display, custom DB initialization, HDD writ-
ing/reading test, HDD test data deletion, format, HDD setup and 
initialization mode for factory can be executed in this mode.

Enter The HDD Test Mode
Procedure:
1.  In the standby status, press the [

?/1

] button to turn the power 

on.

2.  Press three buttons of [TUNE – l m], [GROOVE] and 

[m] simultaneously.

3.  When the HDD test mode is activated.

1.  CDDB Version Display
The version of CDDB built into HDD is displayed.
Procedure:
1.  Enter the HDD test mode.
2.  Press the [M]/[m] buttons to select the “CDDB Version”, and 

press the [ENTER] button.

3.  The version of CDDB is displayed on the fl uorescent indicator 

tube.

2.  Custom DB Initialization
The initialization of custom DB recorded in HDD is executed.

Note: Not used for the servicing.

Procedure:
1.  Enter the HDD test mode.
2.  Press the [M]/[m] buttons to select the “Custom Init”, and press 

the [ENTER] button.

3. The 

following 

fi les in HDD are deleted.

• ROOT\SYSTEM\CCUDB\CCU.EDB
• ROOT\SYSTEM\CCUDB\CCU.IDX
• ROOT\SYSTEM\CCUDB\CCUTOC.IDX
• ROOT\SYSTEM\CCUDB\SCCU.EDB
• ROOT\SYSTEM\CCUDB\SCCU.IDX
• ROOT\SYSTEM\CCUDB\SCCUTOC.IDX

3.  HDD Writing/Reading Test
The writing/reading of test data is done to HDD, and whether it 
operates normally is checked.

Note: Not used for the servicing.

Procedure:
1.  Enter the HDD test mode.
2. Press the [M]/[m] buttons to select the “HDD W/R Test”, and 

press the [ENTER] button.

3.  The writing reading of the test data is done to HDD, and the 

result is displayed.

 

When the writing/reading of the test data ends normally, the 
written test data is deleted.
•  W/R Test OK : The writing/reading of the test data ended 

normally.

•  W/R NG 

:  Abnormality occurred in the writing/reading 

of the test data.

•  Erase NG 

: It failed in the deletion of the test data.

4. Format
The deletion of all folders and fi les in HDD is executed.

Note 1: Not used for the servicing.
Note 2: When this mode is executed, all data including the SYSTEM fi le 

in HDD is deleted.

Procedure:
1.  Enter the HDD test mode.
2.  Press the [M]/[m] buttons to select the “Format”, and press the 

[ENTER] button.

3.  All folders and fi les in HDD are deleted.

5. HDD Setup
The installation of initial data is executed from the USB memory 
to HDD.

Note 1: Not used for the servicing.
Note 2: The SYSTEM fi le and the DEMO tune are copied from USB 

memory after all data in HDD is deleted with format when this 
mode is executed, and HDD can be returned to the state of initial-
ization (It takes the time of about 80 minutes).

Procedure:
1.  Connect the USB memory where initial data is recorded to the 

set.

2.  Enter the HDD test mode.
3.  Press the [M]/[m] buttons to select the “Setup”, and press the 

[ENTER] button.

4.  The following data is copied from the USB memory to HDD. 

• ROOT\SYSTEM\TitleUpdater.exe
• ROOT\SYSTEM\TitleUpdaterVersion.txt
• ROOT\SYSTEM\UCODE.DAT
• ROOT\SYSTEM\CDDB\ecddb.idx
• ROOT\SYSTEM\CDDB\ecddb.mdt
• ROOT\SYSTEM\CDDB\elists.db
•  ROOT\MUSIC\(File of description to “MUJIC\music.txt”)

6.  Initialization Mode For Factory
The user use areas other than the “Sony Demo” artist in HDD are 
initialized, and the cold reset is executed. 
Procedure:
1.  Enter the HDD test mode.
2.  Press the [M]/[m] buttons to select the “FactoryPreset”, and 

press the [ENTER] button.

3.  Press the [M]/[m] buttons to select the “OK?”, and press the 

[ENTER] button.

4. All 

folder/fi le in the following folders in HDD is deleted.

• ROOT\SYSTEM\CCUDB
• ROOT\MUSIC (excluding folder/fi le that belongs to “Sony 

Demo” artist)

5.  After initialization ends, the cold reset is executed.

Note: Never execute the item because the set might not operate 

normally when the item being written, “Not used for the 
servicing.” in each item is executed.