
MOTOROLA CONFIDENTIAL - PROPRIETARY
38
November 20, 2000
6881036B20
Troubleshooting
Product Family 38C
000782-O
Figure 22. No Transmitter Control Matrix
H
1. Place UUT in manual test mode by
entering 9823#, 110062#, 1215#, and 41#
(continuous transmit).
2. Is TX_EN present on Q120 Pin 3?
Check U800
See Note 1
Is RFV2 present
on Q120 Pin 1?
VREF is present on C213 (U900)?
No: check U900.
Yes: check Q201 and U200.
See Note 1
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Check Q120
See Note 1
Check U200
See Note 1
Check U200
See Note 1
Check Q2120
See Note 1
Check Q121
See Note 1
TX275 is present
on C1125?
SFOUT is present
on Q121 Pin 4?
Correct signal is present
on Q2120 Pin 1?
Correct signal is present
on C1126 (near Q2120)?
Note 1: Check components for correct
orientation, cold solder joints, physical
damage, and functionallity.
In most cases, a reference board can be
used to compare signals.
Содержание 38C V100
Страница 1: ...Level 3 Service Manual Model V100 GSM Technology Product Family 38C Personal Communicator ...
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Страница 4: ...MOTOROLA CONFIDENTIAL PROPRIETARY ii November 20 2000 6881036B20 Table of Contents Product Family 38C ...
Страница 26: ...MOTOROLA CONFIDENTIAL PROPRIETARY 22 November 20 2000 6881036B20 Circuit Description Product Family 38C ...
Страница 66: ...MOTOROLA CONFIDENTIAL PROPRIETARY 62 November 20 2000 6881036B20 Part Number Charts Product Family 38C ...
Страница 73: ...V100 BOARD LAYOUT PAGE 1 2 ...
Страница 74: ...V100 BOARD LAYOUT PAGE 2 2 ...
Страница 77: ...V100 CONNECTOR SCHEMATICS ...
Страница 78: ...V100 DISPLAY SCHEMATICS ...
Страница 79: ...V100 FM SCHEMATICS ...
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