Sony SAVA-500/SS-CN16/SR16 HOME THEATER ACTIVE SPEAKER SYSTEM – Circuit Diagram – Test modes
KEY CHECK MODEProcedure
1. Push back [Power] button to turn the power OFF.
2. Connect the lead wire to TP3 and TP4 on the KEY board.
3. Push [Power] button to power ON.
4. Let the lead wire short TP3 and TP4.
5. Fluorescent indicator tube display “KEY CHK 500”, and enter the key check mode.
6. Pressing any buttons, the number of button will be displayed on the fluorescent indicator tube.
7. Pressing the first button turns on the [READY] LED (red), and the second button turns on the [ON] LED (green). Thus, two LEDs light up alternately each time the buttons are pressed.
8. After all buttons are pressed, it will be in the STANDBY mode.
Note: If a check failed, the set does not go in STANDBY state, and you cannot exit from the test mode. In this case, quit the test mode by pushing back [Power] button.
Input = [1]
Surround = [2]
Center mode = [3]
Woofer = [4]
Master volume (-ve) = [5]
Master volume (+ve) = [6]
Main board - Circuit diagram and PWB [Click on the pictures to zoom in]
Amplifier board PWB and circuit diagram
Exploded view
Procedure
1. Push back [Power] button to turn the power OFF.
2. Connect the lead wire to TP1 and TP2 on the KEY board.
3. Push [Power] button to power ON.
4. Let the lead wire connected TP1 and TP2.
5. Fluorescent indicator tube display “AMP CHK 500”, and enter the amp check mode.
6. The check step advances in order as TP1 and TP2 are shorted.
The step 12 is the AUTO POWER ON/OFF
The step 12 is automatically turned the power OFF in one second, ON when a signal is entered to TV input, and OFF when a signal input stops.
After the step 12 finished, return the parameters to default values, then turn the power OFF.
7. To release the test mode, push back [Power] button.
After the step 12 finished, return the parameters to default values, then turn the power OFF.
7. To release the test mode, push back [Power] button.
