6871620L01-C
May 28, 2008
Troubleshooting Tables:
List of Board and IC Signals
7-3
31
DISP_ID
No Connect
No
32
UC_KP_5V1
5V_MISC
Yes
33
DISP_RESET
D1000
Yes
34
UC_KP_ONOFF
R9923
Yes
35
COV_D0
E1110
Yes
36
COV_D5
E1115
Yes
37
E_SUB
R9917
Yes
38
COV_D6
E1116
Yes
39
E_MAIN
R1467
Yes
40
COV_D7
E1117
Yes
41
GND
GROUND
No
42
IM0
R9904
Yes
43
GND
GROUND
No
44
IM1
R9919
Yes
45
COV_D12
E1122
Yes
46
LEDK
R9912
Yes
47
COV_D11
E1121
Yes
48
LEDA
5V_MISC
Yes
49
COV_D10
E1120
Yes
50
EAR+
Pin 5 of U20
Yes
51
COV_D8
E1118
Yes
52
EAR-
Pin 7 of U20
Yes
53
COV_D9
E1119
Yes
54
DISP_V1.875
C9970
Yes
55
COV_D1
E1111
Yes
56
DISP_V2.9
E1103
Yes
57
COV_D2
E1112
Yes
58
DISP_R_W
E1129
Yes
59
COV_D15
E1125
Yes
60
DISP_REG_SEL_A0
E1130
Yes
Table 7-2. J1 Mainboard to Keypad Flex and Display Module (Continued)
J1 Pin
No.
Description
To/From
Accessible
on
Mainboard?
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: ......