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4 . TROUBLE SHOOTING
Checking Flow
Check R512, R515, R517
Check whether FEM
Set as RX mode
Refer to Table 4-2
Yes
VC1 :Low or HIGH
VC2 :Low
VC3 :Low
Check SW501 Pin ANT,RF
with RF Cable connected
.
Open
Yes
Changing SW500
Check SW500 Pin ANT,RF
with No RF Cable Connected
Short
Yes
Changing SW500
For these 2 test case,
No Call connection is needed
No
No
Check RF Level of
FL500.1 (for GSM) & FL500.3
(for DCS) & FL500.5
(for PCS)
FEM & Mobile SW is OK
See next Page to check
Rx IQ Signal
Pin1 : ~ -62dBm
n 3,5 : ~ -63dB
No
Changing FL500
Yes
No
For this RF Level test case,
RX Stand alone Mode is needed
refer to chapter 11
Changing the board
Table 4-2
ANT SW
EGSM_Tx
DCS PCS_Tx
EGSM DCS_ Rx
PCS_Rx
VC1
L
L
L
H
ANT SW CONTROL TABLE
VC2
L
H
L
L
VC3
H
L
L
L
Содержание B2070
Страница 54: ... 53 4 TROUBLE SHOOTING 4 2 TX Trouble TEST POINT 13Mhz OSCILLATOR Mobile SW FEM TRANCEIVER LDO PAM ...
Страница 68: ... 67 4 TROUBLE SHOOTING TEST POINT 4 6 LCD Trouble ...
Страница 72: ... 71 4 TROUBLE SHOOTING TEST POINT 4 8 Speaker Trouble ...
Страница 79: ... 78 4 TROUBLE SHOOTING 4 11 KEY backlight Trouble TEST POINT ...
Страница 96: ...6 Press Start and Pover on the phone using JIG remote Power on Switch 1 5 DOWNLOAD AND CALIBRATION 95 ...
Страница 107: ... 106 8 PCB LAYOUT Figure 8 1 B2070 BOTTOM SIDE PCB LAYOUT ...
Страница 108: ... 107 8 PCB LAYOUT Figure 8 1 B2070 TOP SIDE PCB LAYOUT ...
Страница 109: ... 108 ...
Страница 117: ...10 STAND ALONE TEST 116 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 121: ... 120 ...
Страница 123: ... 122 ...