MOTOROLA CONFIDENTIAL - PROPRIETARY
44
November 20, 2000
6881036B20
Troubleshooting
Product Family 38C
000787-O
Figure 28. No Audio
Place UUT into manual test
mode, then enter 481000#
(generate 1 KHz tone), 430#
(change audio path), 4707#
(set audio volume)
START
1 KHz tone (approximately
0.5V P-P) is present on
headset terminal?
Check
J504
,
C511
,
C951
,
C952
, and
R961
See Note 1
1. Remove headset.
2. 2.7V is present on
R977
?
Check
J504
See Note 1
Check
U900
See Note 1
1. Connect headset.
2. Voltage on
R977
is
now approximately
0.5V?
Check
R976
,
CR901
See Note 1
NO
NO
YES
YES
NO
YES
Note 1: Check components for correct
orientation, cold solder joints, physical
damage, and functionallity.
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: ......