Motorola CP160 Service Information - Page 29

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Also for Motorola CP160: User Manual (46 pages), Basic User's Manual (16 pages), Basic User's Manual (16 pages), Basic User's Manual (18 pages), Detailed Service Manual (28 pages), Cps/Tuner Installation Manual (6 pages), Service Information (46 pages)

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Motorola CP160 Service Information
Troubleshooting Table for Board and IC Signals
IC Designator
U404
Flash ROM
U451
ASFIC_CMP
Pin
Pin Function
10
A16
11
A15
12
A12
13
A7
14
A6
15
A5
16
A4
17
A3
18
A2
19
A1
20
A0
21
D0
22
D1
23
D2
24
GND
25
D3
26
D4
27
D5
28
D6
29
D7
30
EN_CE
31
A10
32
EN_OE
1
VDD for analog circuits
2
DISC audio input
3
Ground for analog circuits
4
DACU output
5
DACR output
6
DACG output
7
VOX peak detector output
8
PLCAP for DC integrator
9
SQIN
10
Universal audio input/output
11
VDD for DACs
12
SQCAP
13
GCB2 general purpose output
DC Voltage
Comments (Condition)
3.17
0.30
0.22
3.03
3.08
3.06
0
0.24
3.08
3.05
3.05
0.69
0.94
1.08
GND
0.78
0.59
0.66
0.67
0.75
3.01
From U401-38
0.16
0
From U401-86
3.00
1.34
From U510
GND
0
0
2.38 (typ)
Power set (TX mode)
2.91
0.40
0.01
0
4.95
0
0
Audio PA_EN (unsquelched)
3-13