Motorola 38C V100 Service Manual page 43

Level 3 Service Manual
Figure 23. PIN Diode Band Select
6881036B20
I
NO
GSM_SEL and DCS_SEL
(from Magic IC)
Q1101
are present on
Pin 3 Pin 1
and ?
YES
-10V is present
C102
on ?
YES
TX_GSM and TX_DCS
Q1101
are present on
Pin 4 Pin 6
and ?
NO
Q1101
Check
See Note 1
MOTOROLA CONFIDENTIAL - PROPRIETARY
November 20, 2000
In most cases, a reference board can be
used to compare signals.
U200
Check
See Note 1
U903
NO Check
U904
and
See Note 1
YES
Check for
intermittent
operation.
See Note 1
Note 1: Check components for correct
orientation, cold solder joints, physical
damage, and functionallity.
Troubleshooting
000783-O
39