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Motorola Cp200 Detailed 6880309n62 C Manual

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Page 51

6880309N62-CJune, 2005
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-9
U201
Freq Synthesizer
24Ref osc XTAL20
25 Ref osc warp output 3.00
26Superfilter cap4.48
27 Superfilter base (NU) 3.76
28Superfilter output4.52
29 NC2 0
30Superfilter input4.96
31 NC3 0
32Prescaler input1.97
33 Prescaler ground GND
34Prescaler Vdd2.99
35 Prescaler Vref (NU) 1.97
36Digital Vdd2.99
37 TEST1 (NU) 0.01
38TEST2 (NU)0
39 Bias 2 3.38 (typ) (1.34 V in TX mode)
40Bias 11.50 (typ)(3.20 V in TX...

Page 52

June, 20056880309N62-C
6-10VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
U251
VCO / Buffer
12Prescaler output2.26
13 TX switch output (NU) 0.06
14Vcc_BUFFERS3.00
15 TX VCO emitter 0 (RX mode)
16TX VCO base0(RX mode)
17 GND_LOGIC GND
18Vcc_LOGIC3.00
19 TRB input 0.03 From U201-2 (RX mode)
20FLIP inputGND
U310
5 V Regulator1 Vin 7.48
2GroundGND
3 Control input 7.48
4Bypass capacitor1.26
5Vout 4.96
U320
3.3 V Regulator
1GroundGND
2 Feedback 1.23
3Tap (NU)0
4 Vin 7.48
5Vo u...

Page 53

6880309N62-CJune, 2005
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-11
U401
Microprocessor
10PB1_ADDR93.05
11 PB2_ADDR10 0.16
12VDD3.23
13 VSS GND
14PBO_ADDR83.05
15 PB5_ADDR13 0.13
16PG1_XA140.20
17 PG4_XA17 3.17
18PG5_XA180
19 PG3_XA16 3.21
20PG2_XA150.30
21 PB4_ADDR12 0.22
22PF7_ADDR73.03
23 PF6_ADDR6 3.08
24PF5_ADDR53.06
25 PF4_ADDR4 0.16
26PF3_ADDR30.26
27 PF2_ADDR2 3.06
28PF1_ADDR13.06
29 PFO_ADDR0 3.05
30PC0_DATA00.69
31 PC1_DATA1 0.96
32PC2_DATA21.10
33 PC3_DATA3...

Page 54

June, 20056880309N62-C
6-12VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
U401
Microprocessor
46PH1_PW23.00
47 PH0_PW1 3.23 Synth chip select
48XIRQ3.00
49 PI7 1.48 RX enable
50PI60.01TX enable
51 PI5 3.23
52PI40Green LED enable
53 PI3 0 Red LED enable
54PI20
55 PI1 0
56PI02.98Lock detect from U201-4
57 MODB_VSTBY 3.22 Boot mode enable
58MODA_LIR3.12
59 AVDD 3.23
60PE7_AN73.20
61 PE6_AN6 3.20
62PE5_AN52.91VOX threshold detect
63 PE4_AN4 0.73 RSSI input
64PE3_AN30.14
65 PE2_AN2...

Page 55

6880309N62-CJune, 2005
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-13
U401
Microprocessor
82PA3_IC4_OC5_OC13.00
83 PA4_OC4_OC1 0 Squelch detect input
84PA 5 _ O C 3 _ O C 10Channel activity input
85 PA6_OC2_OC1 0
86PA 7 _ PA 1 _ O C 10
87 VSSR GND
88VDDR3.23
89 ECLK (NU) 1.60
90EXTAL1.70Clock from U451-28
91 XTAL 1.40 Not used
92VDDSYN0
93 XFC (NU) 0
94RESET3.20From U320
95 LVOUT 0
96IRQ3.20
97 PD0_RXD 3.23
98PD1_TXD1.9
99 PD2_MISO 0
100PD3_MOSI3.23
U402
EEPROM1 Chip...

Page 56

June, 20056880309N62-C
6-14VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
U404
Flash ROM
10A163.17
11 A 1 5 0 . 3 0
12A120.22
13 A7 3.03
14A63.08
15 A5 3.06
16A40
17 A3 0.24
18A23.08
19 A1 3.05
20A03.05
21 D0 0.69
22D10.94
23 D2 1.08
24GNDGND
25 D3 0.78
26D40.59
27 D5 0.66
28D60.67
29 D7 0.75
30EN_CE3.01From U401-38
31 A10 0.16
32EN_OE0From U401-86
U451
ASFIC_CMP1 VDD for analog circuits 3.00
2DISC audio input1.34From U510
3 Ground for analog circuits GND
4DACU output0
5 DACR...

Page 57

6880309N62-CJune, 2005
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-15
U451
ASFIC_CMP
14GCB1 general purpose output0
15 GCB0 general purpose output3.00 BW select (25 kHz mode)
16Squelch channel activity output0To U401-84
17 Squelch detect digital output 0 To U401-83
18PL/low speed data I/O1.50
19 High speed data I/O 3.00
20Chip select3.23From U401-2
21 Serial clock input 0
22Serial data input3.23
23 Ground for clock synthesizer GND
24Loop filter cap for clock syn0.74
25...

Page 58

June, 20056880309N62-C
6-16VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Notes:
U480
Dual Opamp1 Unit 1 output 2.48
2Unit 1 (-) input2.48
3 Unit 1 (+) input 2.46
4GroundGND
5 Unit 2 (+) input 0.28
6Unit 2 (-) input0.29
7 Unit 2 output 0
8Vcc4.96
U490
Audio Power Amp1 Enable/shutdown 0.12 (Unsquelched)
2Bias reference3.26(Unsquelched)
3 (+) input 3.26 (Unsquelched)
4(-) input3.27(Unsquelched)
5 (-) output 3.25 (Unsquelched)
6Vcc7.48(Unsquelched)
7Ground GND
8(+)...

Page 59

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)7-56880309N62-CJune, 2005Chapter 7 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists  (8486769Z02-A) 
RX_FE_VHF_R1
CONTROLLER
VCO_VHF_R1
TX_VHF_R1
RX_BE
SYNTH_VHF_R1
V_SF V_STEER 5V 3V5R
16_8_MHZ
3V 5V
LOCK MOD_IN
PRESC
SPI_CLK
SPI_DATA_OUT SYNTH_CS
TRB VCO_MOD RSSI5V5R
3V 5RUSWB+
5V USWB+
V_SF V_STEER5T
3V
5T
PWR_SET
RX_OUT TX_ENA
TX_INJUSWB+ 5V
BW_SEL DEMOD
IF_IN
LOCK MOD_OUTPWR_SET
RSSI
SPI_CLK...

Page 60

7-6VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 20056880309N62-C
 
700mV (RF) 3.95V (Rx)
2.0V (Rx) 3.38V (Rx)3.95V (Rx)0V (Tx) 5.0V (Rx)
485mV (RF)500mV (RF)
445mV (RF) 705mV (RF) 3.9V (Rx)
125 mV (RF) 128 mV (RF)
0.74V (Rx)
C30
30pF
0.1uF C995.6KRF BALUN
5
NC
4
63
2
1
R25T41
IO11
2 IO2 IO3
3IO4
4
NC
TP21
CR41HSMS2829
C3668nH
30pF C22
1000pFL33
L3
C41
15pF 68nH
FE_RF_INJ
  0 R26
1
C44
20pF
SH1
SHIELD68pF R23
22K
L21
NUC34 R24
750R51
51
33pFC8
30pF
63
2
1 C7
T42
 IF...
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