Test Mode - Sony WX-GT90BT Service Manual

WX-GT90BT/GT90BTE/GT99BT
SETTING THE TEST MODE
Setting method:
1. Press the [ OFF SOURCE] button for 1 second to turn the
power off.
2. Press the [ 4] t [MIC/ZAP 5] t [ V ALBUM 1] buttons
sequentially (the [ V ALBUM 1] button is pressed for two sec-
onds).
3. It is set to the test mode, and all segments of the liquid crystal
display light.
Releasing method:
Press the [ OFF SOURCE] button for 1 second.
MICROPHONE AUDIO LOOPBACK
To confi rm the state of the external microphone used when a
handsfree function is used, the microphone audio is output from
the speaker.
The breakdown judgment of the microphone can be done without
connecting H/F with the cellular phone.
Procedure:
1. Enter the test mode.
2. Press the [ OFF SOURCE] button to select the Bluetooth
Phone function.
3. On/off of the microphone audio loopback function changes
whenever the [ALBUM v 2] button is pressed ("ALBUM" is
displayed in the liquid crystal display).
LOOPBACK
ON
OFF
24
SECTION 4

TEST MODE

ALBUM
Lit
None