Troubleshooting Diagrams; Introduction To This Section - Motorola ASTRO XTS 3000 Service Manual

Troubleshooting
Diagrams
Introduction to
This Section
This section contains troubleshooting diagrams necessary to isolate a problem to the component level.
Use these diagrams in conjunction with the theory of operation, troubleshooting procedures, charts, and
waveforms.
J101 Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
15-18
19
20
21
22
23
24
25
26
27
28-30
31
32
33
34
35
36
37
38
39
40
14, 41
J101
Controller Board to Controls Flex Assembly
Description
CTSOUT*
LHDATA/BOOT_DOUT/KEYFAIL
GROUND
RS232IN
SPKR_COMMON
RS232_DOUT/BOOT_DIN
OPT_SEL_2
SB9600_BUSY
EXT_SPEAKER
RTSIN*
OPT_SEL_1
OPT_B+/BOOT_SEL/VPP
EXT_MIC
GROUND
BL_HOME
BL_FREQ
RED_LED
GREEN_LED
TG2
RTA1
RTA3
RTA2
RTA0
GROUND
VOL
B+_SENSE
UNSW_B+
TG1
+5V
INT_MIC
SPKR_COMMON
INT_PTT
GROUND
INT_SPKR
EMERG
12
To/From Side Conn Pin #
U702-B6 10
U717-1 13
N/C 8
U702-B2/G3 12
U718-27 6
U702-A5 11
U702-C6 5
U701-74 9
U718-31 2
U702-J8 7
U702-A6 1
VR119/D100 4
U714-6 3
N/C
Q111-2
Q111-1
Q112-2
Q112-1
U701-24
U702-F4
U702-H1
U702-F2
U702-F3
N/C
U701-25
VR101
P201-15/20
U701-19
U709-9
U714-2
U718-27
U702-H2
N/C
U718-23
U701-27
12-1