Sharp GX15 Service Manual page 43

4.8.2 Key back light check
The keypad back light turns on and the message appears on the PC. Check the back light and press "OK".
4.8.3 Battery voltage check
Click to display the current battery voltage.
• If a failure occurs, see "1. Power does not turn on." in [3] Troubleshooting.
4.8.4 Vibrator test
Click to vibrate the handset (phone). Click "OK" to exit.
• If a failure occurs, see "5. Vibrator does not work." in [3] Troubleshooting.
4.8.5 Melody test
A message describes test items. Click "Yes" to proceed and "No" to exit.
The order of the test items:
Earpiece → Hands free → Hands free (stereo) → Earpiece (analogue melody)
Trouble found by SPST
(1) Earpiece
(2) Hands free
(3) Hands free (stereo)
(4) Earpiece (analogue melody)
CONFIDENTIAL
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.
Troubleshooting (based on [3] Troubleshooting)
See "7. Earpiece (for loud 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 "8. 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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