- 76 -
1. Checking Regulator Circuit
-
2.85V Regulator Out
2. Checking VCTCXO Circuit
-
13MHz Clock Output
3. Checking PLL Control Signal
-
SEN, SCLK, SDATA
4. Checking FEM & Mobile Switch VC1,VC2,VC3
Tx Output Power
• GSM850 : about 32.5dBm
• DCS/PCS : about 29.5dBm
Same as RX Trouble Shooting
Procedure No.1 ~3.
Same as RX Trouble Shooting
Procedure No.4
GSM Tx Path
GSM850 Tx Path
DCS/PCS Tx Path
For this RF Level test case,
TX Stand alone Mode is needed
rafer to standalone test.
Check these points with High
Frequency Probe.
You can see RF signal at Spectrum
Analyzer !
U701
U703
U704
FL701
Z3X-BOX.COM
Содержание CE500
Страница 1: ...Service Manual Model CE500 Service Manual CE500 Date September 2005 Issue 1 0 Z 3 X B O X C O M ...
Страница 3: ... 4 Z 3 X B O X C O M ...
Страница 14: ...3 Technical Brief 15 3 1 4 Digital Baseband DBB Processor Block diagram of the AD6532 Z 3 X B O X C O M ...
Страница 36: ...4 TROUBLE SHOOTING 37 Test Point VEXT VRTC VMEM VINT VSIM VPLL VUSB VABB VTCXO VCORE VMIC Z 3 X B O X C O M ...
Страница 77: ...4 TROUBLE SHOOTING 78 5 Check Tx I Q TXQP TXQN TXIN TXIP U704 Test Point Z 3 X B O X C O M ...
Страница 85: ...Note 86 Z 3 X B O X C O M ...
Страница 93: ... 94 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 94: ... 95 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 95: ... 96 Z 3 X B O X C O M ...
Страница 103: ...9 CALIBRATION 104 L Standalone Test Equipment Setup Oscilloscope Z 3 X B O X C O M ...
Страница 105: ... 106 Z 3 X B O X C O M ...
Страница 127: ...Note 128 Z 3 X B O X C O M ...