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lunedµ 20 dicembre 1999
note: all the signal & voltage present
in this procedure has to be clear and
at correct level ; compare them with a
good pcb
1
GND
2
RF_IN
3
GND
4
PAC_EN
5
6
7
EXC
NOTE: check if any components mentioned is correctly
positioned , has not dry joint and is not damaged . If all is ok
replace it . If problem is still the same send BOARD IN htc.
PAC IC
PAC_EN = 4V 217 Hz
14
13
12
U350
11
DET_SW
10
TX_KEY OUT
9
ACT
8
AOC
TX POWER CONTROL ON U200 IC
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Dual band Taishan level 3 debug rev 1.0
pin 4,14 PAC_EN comes from Q150 via Q350
( TX_EN comes from U800 )
pin 8 , 9 , 10, 11 comes from U200 if not ok
check : SPI BUS on TP 205 & TP 206 for data
presence with pcb in stand by.
TX KEY see on TP 209
DM_CS see on TP 208.
NOTE: REFER DIAGRAMS BELOW &
on pag. 10 FOR TIMING TX.
NO TX
GSM/DCS
Page 9
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