Motorola CP150TM User Manual
Page 179
6880309N62-C
June, 2005
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
11-13
U404
Flash ROM
10
A16
3.17
11
A15
0.30
12
A12
0.22
13
A7
3.03
14
A6
3.08
15
A5
3.06
16
A4
0
17
A3
0.24
18
A2
3.08
19
A1
3.05
20
A0
3.05
21
D0
0.69
22
D1
0.94
23
D2
1.08
24
GND
GND
25
D3
0.78
26
D4
0.59
27
D5
0.66
28
D6
0.67
29
D7
0.75
30
EN_CE
3.01
From U401-38
31
A10
0.16
32
EN_OE
0
From U401-86
U451
ASFIC_CMP
1
VDD for analog circuits
3.00
2
DISC audio input
1.34
From U510
3
Ground for analog circuits
GND
4
DACU output
0
5
DACR output
0
6
DACG output
2.38 (typ)
Power set (TX mode)
7
VOX peak detector output
2.91
8
PLCAP for DC integrator
0.40
9
SQIN
0.01
10
Universal audio input/output
0
11
VDD for DACs
4.95
12
SQCAP
0
13
GCB2 general purpose output
0
Audio PA_EN (unsquelched)
Table 11-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
Pin Function
DC Voltage
Comments (Condition)