May 28, 2008
6871620L01-C
5-10
Troubleshooting Charts:
Display Failure
5.5
Display Failure–Page 1
Replace defective Display Module
in Front-Flip Assembly
Check integrity of
E1102 & E1103
-2.775 V< pin 24 <3.1 V?
-1.8 V< pin54 <1.96 V?
No Display
(Main or/and
CID Display)
Problem
Resolved?
No
No
Yes
Yes
Replace
E1102 or E1103
Verify V2 or V1.875
using
DC Supply Failure
flowchart
E1102 OK?
E1103 OK?
No
Yes
Check DC
on J1 pin 24
& pin 54
1
Test Display operation with
a known working
Front Flip Assembly
(with Working Display Module)
Summary of Contents for ASTRO XTSTM 4000
Page 1: ...COLOR CHORDS 7 ASTRO XTSTM 4000 Portable Radio Detailed Service Manual ...
Page 2: ......
Page 16: ...May 28 2008 6871620L01 C xiv Commercial Warranty Notes ...
Page 22: ...May 28 2008 6871620L01 C 1 6 Introduction Notes ...
Page 26: ...May 28 2008 6871620L01 C 2 4 Radio Power Notes ...
Page 56: ...May 28 2008 6871620L01 C 3 30 Theory of Operation Notes ...
Page 100: ...May 28 2008 6871620L01 C 6 8 Troubleshooting Waveforms Notes ...
Page 194: ...May 28 2008 6871620L01 C B 2 Motorola Service Centers Notes ...
Page 204: ...May 28 2008 6871620L01 C Glossary 10 Glossary Notes ...
Page 209: ......