MOTOROLA CONFIDENTIAL - PROPRIETARY
6881036B20
November 20, 2000
39
Level 3 Service Manual
Troubleshooting
000783-O
Figure 23. PIN Diode Band Select
I
GSM_SEL and DCS_SEL
(from Magic IC)
are present on Q1101
Pin 3 and Pin 1?
Check U200
See Note 1
YES
YES
YES
NO
NO
NO
TX_GSM and TX_DCS
are present on Q1101
Pin 4 and Pin 6?
-10V is present
on C102?
Check Q1101
See Note 1
Check U903
and U904
See Note 1
Check for
intermittent
operation.
See Note 1
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.
Summary of Contents for 38C V100
Page 1: ...Level 3 Service Manual Model V100 GSM Technology Product Family 38C Personal Communicator ...
Page 2: ......
Page 73: ...V100 BOARD LAYOUT PAGE 1 2 ...
Page 74: ...V100 BOARD LAYOUT PAGE 2 2 ...
Page 77: ...V100 CONNECTOR SCHEMATICS ...
Page 78: ...V100 DISPLAY SCHEMATICS ...
Page 79: ...V100 FM SCHEMATICS ...
Page 81: ......
Page 83: ......