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Troubleshooting
Figure 22. No Transmitter Control Matrix
38
H
1.
Place UUT in manual test mode by
9823#
110062#
1215#
entering
,
,
, and
(continuous transmit).
2.
Q120 Pin 3
Is TX_EN present on
YES
Is RFV2 present
Q120 Pin 1
on
?
YES
TX275 is present
C1125
on
?
YES
SFOUT is present
Q121 Pin 4
on
?
YES
Correct signal is present
C1126
Q2120
on
(near
)?
YES
Correct signal is present
Q2120 Pin 1
on
?
YES
Q2120
Check
See Note 1
MOTOROLA CONFIDENTIAL - PROPRIETARY
NO
41#
Check
See Note 1
?
VREF is present on
NO
U900
No: check
Yes: check
See Note 1
NO
Q120
Check
See Note 1
NO
Check
See Note 1
NO
Check
See Note 1
NO
Check
See Note 1
November 20, 2000
In most cases, a reference board can be
used to compare signals.
U800
C213
U900
(
)?
.
Q201
U200
and
.
U200
Q121
U200
Note 1: Check components for correct
orientation, cold solder joints, physical
damage, and functionallity.
Product Family 38C
000782-O
6881036B20
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Table of Contents
Troubleshooting
