Page 9
lunedµ 20 dicembre 1999
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Dual band Taishan level 3 debug rev 1.0
NO TX
GSM/DCS
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.
PAC IC
TX POWER CONTROL ON U200 IC
PAC_EN = 4V 217 Hz
U350
14
6
5
4
3
2
1
8
9
10
11
12
13
7
DET_SW
TX_KEY OUT
ACT
AOC
GND
RF_IN
GND
PAC_EN
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.
note: all the signal & voltage present
in this procedure has to be clear and
at correct level ; compare them with a
good pcb
Summary of Contents for T189
Page 1: ...Level 1 and 2 Service Manual V1 0 ...
Page 6: ...Antenna Auxiliary RF Test Port SIM Slot Batt Contacts Screw Locations ...
Page 7: ...Antenna Headset Adapter Volume Buttons Antenna Battery Cover ...
Page 9: ...SECTION 3 FEATURE LIST ...
Page 13: ......
Page 17: ......
Page 18: ......
Page 19: ...SECTION 4 DISASSEMBLY PARTS ...
Page 24: ...4 5 Exploded Parts Diagram 1 2 3 4 5 6 7 8 ...
Page 25: ...9 10 11 12 13 14 15 ...
Page 31: ...SECTION 6 REPAIR AND TEST PROCEDURES ...
Page 38: ...SECTION 8 SALES MODELS TBD ...
Page 39: ...SECTION 9 GLOSSARY OF TERMS ...
Page 45: ...1 Tai Tai Shan Shan DUAL BAND DUAL BAND ...
Page 46: ...2 Tai Tai Shan Shan DUAL BAND DUAL BAND ...
Page 59: ...15 Tai Tai Shan Shan 14 top side 13 bottom side DISASSEMBLY DISASSEMBLY ...