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lunedµ 20 dicembre 1999
- MOTOROLA CONFIDENTIAL PROPRIETARY -
Dual band Taishan level 3 debug rev 1.0
NO AUDIO RX
on headset ,
speaker ok
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
Supply pcb using pcb test cable
cod.AE20101903, set pcb in test mode and
digit test commands:
481000# 1 KHz tone enabled
434# audio on speaker / headset way
4707# max volume audio
Insert on J504 headset connector an headset
jack and check if 1KHz tone is udible on
headset speaker
Check J504 ,
U900 for any
intermittent
issue
Check for missing , dry joint
or unsoldered issues on:
R1506 , C611 , R961 , C951 ,
C952 , L1005 , J504.
Is SPKR- signal
at 0,5 Vpp , 1,4
Vcc offset
present on
R1506?
Check SPKR- line for track between
R933 and R1506.
Else , check for 0,6v presence on VR
977 with jack on and 2,7 V with jack
off ,in this way problem can be "
HEAD_INT " line faulty,check for
this VR977 , R977 , L1004 ,J504.
YES
NO
NO
YES
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 ...