Départ. Technical support- CM640
PROCEDURE
COMPANY RESTRICTED
PHILIPS Consumer
Communications
Centre du Mans
Service Repair Support
VY-V-640-120-2
Page : 44 of 45
Language : EN
Date : 23/04/02
Ó
PHILIPS ELECTRONICS N.V. 1999
VY-V-640-
All rights reserved. Reproduction in whole
or in part is prohibited without the written
consent of the copyright owner.
10.5
Buzzer problems
Buzzer tone can be checked with the test SIM card by pressing key “1” and “Left arrowhead”.
- If it does not sound properly Change the LCD Holder.
10.6
No sound in Loudspeaker
The sound from the loudspeaker can be checked with the test SIM card by pressing key “3”.
- Check the microphone and the earpiece, If they are not correct,Change the LCD Holder.
10.7
Communication problems
- Sound quality can be checked in audio loop test (sound distortion, whistling, echo, …)
- If the mobile passes the radio tests successfully, we can assume that the phone works properly. The customer
must check the coverage area of his network operator or that he does not use the phone in a radio shadow
(outside the coverage area, in a tunnel or between tall buildings, …)
- If the mobile does not pass the radio tests, swap the Board.
10.8
Defective antenna
- If the antenna is broken or curved => replace it without change the rear cabinet.
10.9
Keyboard problems
-The keyboard can be checked with the test SIM card.
- If a key or a row does not respond, check the keyboard, change it if necessary. Check the polydome, change it if
necessary.
If the failure cannot be found out, swap the board.
10.10 Problems to send SMS messages
Check the Center number. It may be empty or wrong.
