5. Trouble shooting
5.15.2 Checking Transceiver Output Signals
| TQM7M5005 | U600 |
|
15 | PGND | GSM850_900_IN 7 | |
8 | GND3 | TX_EN | 6 |
11 |
| ||
14 | GND2 | VRAMP | 5 |
| GND1 |
| |
9 | BY_CAP2 | VBATT | 4 |
13 | BY_CAP1 | BS | 3 |
10 | GSM850_900_OUT | MODE_SELECT | 2 |
12 | DCS_PCS_OUT | DCS_PCS_IN | 1 |
|
|
| TXLB |
|
| R609 | 1 |
|
|
| TXLB |
|
| R610 | 1 |
|
|
| PA_EN |
|
| R611 | 10K |
|
|
| TX_RAMP |
|
| R612 | 1 |
|
|
| PA_BAND |
|
| R613 | 1 |
|
|
| PA_MODE |
|
| R614 | 1 |
|
|
| TXHB |
C636 | C637 | C638 | TXHB |
DNI | DNI | 47p | |
|
|
|
Transceiver Output Circuit
TXLBTXHB
MODE | Transceiver Output |
|
|
GSMK | Fixed |
|
|
8PSK | Ramp Burst Control |
|
|
| Transceiver Output Operation |
Copyright © 2008 LG Electronics. Inc. All right reserved. | - 97 - | LGE Internal Use Only |
Only for training and service purposes |
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