Electro help: Sony STR-KSL50 HOME THEATER SYSTEM test modes and schematic

AEP Model, UK Model, E Model. STR-KSL50 is the receiver section in HT-SL50.

TEST MODE.

FACTORY PRESET MODE
* All preset contents are reset to the default setting.
* Procedure:
While depressing the PLII and the PRESET TUNING + buttons simultaneously, press the power button to turn on the main power. The message “FACTORY” appears and the present contents are reset to the default values.

RDS AUTOBETICAL MODE
* This mode is installed in the Europe models only. When this mode is used, the receiver scans the broadcasts that can be received by the tuner, and sets up the broadcasts. Be sure to start scanning after connecting the antenna.
* Procedure :
1. Check that the antenna is connected.
2. While depressing the INPUT SELECTOR button, press the Power button to turn on the main power.
3. The message “AUTO-BETICAL SELECT” appears and the receiver starts scanning.
MICRO/NORMAL SPEAKER SELECTION MODE
* Either the micro speaker mode or normal speaker mode can be selected.
* Procedure
While depressing the MUTING button, press the power button to turn on the main power. Either the message “MICRO SP.” or “NORM. SP.” appears. Select the desired mode.

SOUND FIELD CLEAR MODE
* 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:
While depressing the SOUND FIELD button, press the power button to turn on the main power. The message “SF. CLR” appears and initialization is performed.
ALL CLEAR MODE
* The all preset value is cleared when this mode is activated.
* Procedure :
While depressing the PLII and the PRESET TUNING – buttons simultaneously, press the power button to turn on the main power. The message “CLEARED” appears and clear all preset value.

SOFTWARE VERSION DISPLAY MODE
* The software version is displayed.
* Procedure:
While depressing the SOUND FIELD and the PRESET TUNING - buttons simultaneously, press the power button to turn on the main power. The model name, destination and the software version are displayed.
KEY CHECK MODE
* Button check
* Procedure:
While depressing the MUTING and the INPUT SELECTOR buttons simultaneously, press the power button to turn on the main power. “REST 06” appears.
Every pressing of any button other than Power counts down the buttons. The buttons which are already counted once are not counted again. When all buttons are pressed “REST 00” appears.

FLUORESCENT INDICATOR TUBE TEST MODE
* 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:
While depressing the MUTING and the PRESET TUNING - buttons simultaneously, press the power button to turn on the main power.
1. All segments turn on.

4. Press the INPUT SELECTOR button, all segments and LEDs turn off.
5. Every pressing of the INPUT SELECTOR button turns on each segment and LED one after another in the same order.

TUNER CHECK MODE
* Tuner check
* Procedure :
While depressing the SOUND FIELD and the INPUT SELECTOR buttons simultaneously, press the power button to turn on the main power. “TUN CHK” appears and the tuner checking is performed.
DSP TEST MODE
* DSP tests are performed.
* Procedure :
There are two different methods to enter the test mode.
(1) While depressing the INPUT SELECTOR and PRESET TUNING - buttons simultaneously, press the power button to turn on the main power.
(2) When the set is turned on, by using the remote controller, press the ENTER button three times, then press the MAIN MENU
button one time and then press the MUTING button one time.
• Select the item by pressing Cursor button ( UP OR DN ).
• Select the function by pressing Cursor button ( R OR L )