Motorola V3 Manuel - Sayfa 10

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Motorola GmbH, CSS Center, Mobile Devices

Title:

Troubleshooting-Guide V3

5.5 Display

Customer complaint

- DISxx / DIMxx

1. If the display has missing pixels or a missing line replace it.

2. If the secondary display shows only backlight or is completely dead, change

the display.

3. If the display shows strange symbols, make a cross check with a reference-

housing and a reference-flip and act accordingly.

5.6 J41

Customer complaint

- AUDxx

1. If TX-audio is missing, buzzing or is to low set PCB in audio

loop mode and check at C1202-2 mic bias voltage ~ 2.15 V

from PCAP (Fig. 3). If the bias voltage is present, measure using an

oscilloscope measure at C1202-1 int-micp ~1V. While speaking into the

microphone check for audio signals on your oscilloscope.

Fig. 3

Repair Support Information

MIC

Doc. No:

Version:

Date:

Page:

mic-bias-voltage

audio-waves

Motorola internal use

TSG_V3

1.1

09.06.2005

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