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.
Содержание 38C V100
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Страница 66: ...MOTOROLA CONFIDENTIAL PROPRIETARY 62 November 20 2000 6881036B20 Part Number Charts Product Family 38C ...
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