Motorola CP150TM User Manual
Page 54
June, 2005
6880309N62-C
6-12
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
U401
Microprocessor
46
PH1_PW2
3.00
47
PH0_PW1
3.23
Synth chip select
48
XIRQ
3.00
49
PI7
1.48
RX enable
50
PI6
0.01
TX enable
51
PI5
3.23
52
PI4
0
Green LED enable
53
PI3
0
Red LED enable
54
PI2
0
55
PI1
0
56
PI0
2.98
Lock detect from U201-4
57
MODB_VSTBY
3.22
Boot mode enable
58
MODA_LIR
3.12
59
AVDD
3.23
60
PE7_AN7
3.20
61
PE6_AN6
3.20
62
PE5_AN5
2.91
VOX threshold detect
63
PE4_AN4
0.73
RSSI input
64
PE3_AN3
0.14
65
PE2_AN2
1.62
66
PE1_AN1
0 - 3.3 V
Volume control wiper
67
PE0_AN0
2.48
33% of battery voltage
68
VRL
0
69
VRH
3.20
70
AVSS
GND
71
PJ0_CSGP3
3.23
Side PTT button
72
PJ1_CSGP4
0
External MIC PTT
73
PJ2
3.23
74
PJ3
3.23
75
PJ4
3.23
76
PJ5
0
77
PJ6
3.23
Bottom option button
78
PJ7
3.23
Top option button
79
PA0_IC3
0
80
PA1_IC2
1.57
81
PA2_IC1
3.00
Table 6-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
Pin Function
DC Voltage
Comments (Condition)