LG KE990 Service Manual - Page 169
Check S/W download
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9. PCB LAYOUT - 1.0V, 1.2V power supply - Check the battery voltage and Outputs of LDOs-Rx operation - Check the frequency (27MHz) - Camcorder, Camera operation - GSM, WCDMA TX/RX operation LGE Internal Use Only - 170 - - Headset, speaker operation - Power management - Check the TA and bettery - Check S/W download - Check the frequency (19.2MHz) - GSM TX amplifier operation - RX, TX switching selection Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
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9. PCB LAYOUT
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
<Audio Codec>
- Headset, speaker operation
<LDO IC>
- 1.0V, 1.2V power supply
<Xtal>
- Check the frequency (27MHz)
<RF SW>
<RF IC>
- GSM, WCDMA TX/RX
operation
<Multi media IC>
- Camcorder, Camera operation
<Baseband and RF IC>
- Check the battery voltage and
Outputs of LDOs-Rx operation
<Charging IC>
- Check the TA and bettery
<Memory IC>
- Check S/W download
<GSM PAM>
- GSM TX amplifier operation
<FEM>
- RX, TX switching selection
<Xtal>
- Check the frequency
(19.2MHz)
<PM IC>
- Power management