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Page 3
lunedµ 20 dicembre 1999
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Dual band Taishan level 3 debug rev 1.0
NO
POWER
UP
Supply phone using
Ext_B+ (~4.5V) on Butt-plug
and check if
phone power up correctly
set power supply
generator to 4 Vcc and
check if phone power up
correctly
Does 26 MHz
clock is
present on
L220 ?
Check Ext_B+ from J600
to CR903 if OK
Check CR903, Q905
and NOTE1 or faulty.
Check Y200 , C220 , L220 for
missing , dry joint or faulty , check
also for " VRef " voltage presence
= 2,8 V on C213 , if not ok check
line between C919 & C213.
Finally check on C215 for "RF_V2
" voltage = 2,8 V presence and for
" RF_V1 "voltage = 2,8 V on
C217.
For V_BOOST issue check L901 ,
C980 , C970 , C981 , CR 902 ,
C913 for other voltages issues
check any line for short or different
resistence ( compare with a good
one ).
Make a short on W.D. line on R941 side ( near
C913 ) AND CHECK FOLLOWING
FOLTAGES:
-V_BOOST = 5,6 V on C913
-V1 =5V on C906
-V2 =2,8 V on C939
(R905)-V3 = 1,8 V on C909
-SR_VCC = 2,8 V on R722
-VRef =2,8 V on C919
SEE TIMING SEQUENCE on Pag. 16 , 17.
YES
NO
YES
NO
NO
YES
NO
Go to " 2 "
on pag. 03
YES
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
Содержание T189
Страница 1: ...Level 1 and 2 Service Manual V1 0 ...
Страница 5: ...Antenna Lens Keypad Speaker Ports Vol Up Down Fig 2 1 Mechanical pictorial Overview Headset Connector ...
Страница 6: ...Antenna Auxiliary RF Test Port SIM Slot Batt Contacts Screw Locations ...
Страница 7: ...Antenna Headset Adapter Volume Buttons Antenna Battery Cover ...
Страница 9: ...SECTION 3 FEATURE LIST ...
Страница 12: ...Set Alarm One Time Daily Weekly Mon Fri Mon Sat Show Alarm Disable Alarm Edit Alarm Go To Next Alarm ...
Страница 13: ......
Страница 17: ......
Страница 18: ......
Страница 19: ...SECTION 4 DISASSEMBLY PARTS ...
Страница 24: ...4 5 Exploded Parts Diagram 1 2 3 4 5 6 7 8 ...
Страница 25: ...9 10 11 12 13 14 15 ...
Страница 31: ...SECTION 6 REPAIR AND TEST PROCEDURES ...
Страница 38: ...SECTION 8 SALES MODELS TBD ...
Страница 39: ...SECTION 9 GLOSSARY OF TERMS ...
Страница 45: ...1 Tai Tai Shan Shan DUAL BAND DUAL BAND ...
Страница 46: ...2 Tai Tai Shan Shan DUAL BAND DUAL BAND ...
Страница 54: ...10 Tai Tai Shan Shan 5 Lift off back housing 6 Prise off alert from back housing DISASSEMBLY DISASSEMBLY ...
Страница 55: ...11 Tai Tai Shan Shan 8 Lift PCB out of front housing 7 Unscrew Antenna and remove DISASSEMBLY DISASSEMBLY ...
Страница 58: ...14 Tai Tai Shan Shan 12 Lift hinge from ZIF connector and remove carefully flex print DISASSEMBLY DISASSEMBLY ...
Страница 59: ...15 Tai Tai Shan Shan 14 top side 13 bottom side DISASSEMBLY DISASSEMBLY ...
Страница 87: ...Taishan Board Layout Draft 2000 12 12 ...