Sharp TQ-GX30E Service Manual page 44

GX30
4.8.2 External back light check
The external display back light turns on and the message appears on the PC. Check the back light and press "OK".
• If a failure occurs, see "10. Back Light does not turn on." in [3] Troubleshooting.
4.8.3 Key back light check
The keypad back light turns on and the message appears on the PC. Check the back light and press "OK".
4.8.4 LED check
The LED lights up in a specified color and the message appears on the PC. Check the LED and press "OK".
• If a failure occurs, see "15. Flash light does not work." in [3] Troubleshooting.
4.8.5 Battery voltage check
Click to display the current battery voltage.
• If a failure occurs, see "1. Power is not turned on." in [3] Troubleshooting.
4.8.6 SD read/write test
Insert an SD card (otherwise a message prompts you to do so) and click the button to perform the SD card read/write test.
• If a failure occurs, see "17. SD (Memory) card is not recognized." in [3] Troubleshooting.
4.8.7 Vibrator test
Click to vibrate the handset. Click "OK" to exit.
• If a failure occurs, see "5. Vibrator does not work." in [3] Troubleshooting.
4.8.8 Melody test
A message describes test items. Click "Yes" to proceed and "No" to exit.
The order of the test items:
speaker → hands free → hands free (stereo) → speaker (analog melody)
(1) Speaker
(2) Hands free
(3) Hands free (stereo)
(4) Speaker (analog melody)
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Trouble found by SPST
Sound is heard in audio test.
No sound is heard in audio test.
Sound is heard in audio test.
No sound is heard in audio test.
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CONFIDENTIAL
Troubleshooting (based on [3] Troubleshooting)
See "7. Speaker does not work."
Parts between IC105 pin 10 and IC103 pin 93 are defective, or IC103 is defective.
See "Hands free kit (monaural headset)" in the section "3. No voice is heard from the earpiece."
Parts between IC105 pin 10 and IC103 pin 93; IC105 pin 11 and IC103 pin 94 are defective.
Otherwise IC103 is defective.
See "Hands free kit (stereo headset) - Option" in the section "3. No voice is heard from
the earpiece."
See "9. Video/Voice Recorder playback is impossible."
Otherwise parts between IC105 pin 10 and IC103 pin 93 are defective, or IC103 is defective.
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