Test Mode - Sony SA-CT780 Service Manual

HT-CT780
1. TEST MODES OTHER THAN THE TEST MODE MENU
These are executable test mode even if not entering the test mode
menu.
1-1. Cold Reset
It can initialize various backup information.
Procedure:
1. Press the [ ] button to turn the power on.
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2. Press the [ ] button for ten seconds.
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3. The message "RESET" is displayed on the fl uorescent indica-
tor tube, then turn the power off.
2. TEST MODES IN THE TEST MODE MENU
These are the test modes done in the test mode menu.
Setting method of the test mode menu:
1. Press the [ ] button to turn the power on.
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2. Press the two buttons of the [INPUT] and [VOLUME +] si-
multaneously for fi ve seconds.
3. The message "PANEL" blinks on the fl uorescent indicator
tube and enter the test mode menu.
Releasing method of the test mode menu:
Press the [ ] button to release the test mode menu.
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SECTION 3

TEST MODE

2-1. Panel Test Mode
It can check the lighting of fl uorescent indicator tube and LED,
operation of buttons, display of model name, destination and soft-
ware version.
Procedure:
1. Enter the test mode menu.
(Refer to "Setting method of the test mode menu")
2. In the state of blinking the "PANEL" on the fl uorescent indica-
tor tube, press the [INPUT] button.
3. All segments in the fl uorescent indicator tube and LED (Blue-
tooth indicator) are lighted up.
4. When pressing the [VOLUME +] button, the display on the
fl uorescent indicator tube repeatedly changes in order from all
lighting → pattern 1 (Bluetooth indicator lights off) → pattern
2 (Bluetooth indicator lights up).
All lighting
Pattern 1
Pattern 2
5. In the state of step 4, press the [VOLUME –] button and "K 0"
is displayed on the fl uorescent indicator tube.
Each time a button is pressed, "K 0" value increases. However,
once a button is pressed, it is no longer taken into account.
When pressing the all buttons, "OK" and "K 5" are alternately
displayed on the fl uorescent indicator tube.
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