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Motorola CP150TM User Manual

Page 54

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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)

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