Motorola PM400 Service Manual Page 97
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4-4 UHF 1-25 W Band 2 PCB 8488978U01 (rev. P9) / Schematics
SHOWN FROM SIDE 1
8488978U01_P9
C301
C302
C303
C304
C305
C306
C307
C308
C309
C310
C311
C312
C313
C314
C315
C316
C317
C318
C319
C320
C322
C336
C337
C359
C360
C361
C362
C364
C365
C369
C371
C402
C406
C411
C414
C418
C490
C602
C603
C604
C605
C606
C607
C608
C609
C610
C611
C612
C613
C614
C615
C616
C617
C618
C619
C620
C621
C622
C623
C624
C625
C626
C627
C628
C629
C630
C631
C632
C633
C662
C678
C1001
C1004
C1005
C1006
C1007
C1008
C1009
C1010
C1011
C1012
C1013
C1014
C1016
C1020
C1021
C1023
C1026
C1031
C1033
C1034
C1037
C1038
C1039
C1041
C1042
C1044
C1052
C1057
C1063
C1064
C1065
C1074
C1082
C1084
C1087
C1088
C1097
C1098
C1099
C1100
C1104
C1108
C1113
C1114
C1115
C1116
C1117
C1118
C1119
C1122
C1123
C1124
C1125
C1129
C1131
C1151
C1152
C1153
C1154
C1155
C1156
C1263
C1264
C2001
C2002
C2004
C2012
C2013
C2014
C2016
C2024
C2025
C2026
C2027
C2028
C2030
C2033
C2036
C2052
C2055
C2056
C2057
C2058
C2059
C2061
C2062
C2063
C2064
C2066
C2067
C2068
C2069
C2073
C2074
C2075
C2077
C2078
C2079
C2080
C2081
C5001
C5003
C5005
C5006
C5008
C5010
C5011
C5012
C5013
C5014
C5015
C5016
C5018
C5019
C5020
C5021
C5022
C5023
C5024
C5025
C5026
C5027
C5028
C5029
C5030
C5032
C5033
C5034
C5035
C5038
C5042
C5043
C5044
C5046
C5047
C5048
C5050
C5051
C5052
C5053
C5054
C5056
C5057
C5059
C5062
C5064
C5066
C5068
C5070
C5071
C5074
C5076
C5078
C5079
C5080
C5081
C5087
C5088
C5089
C5090
C5095
C5096
C5100
C5101
C5102
C5103
C5110
C5111
C5113
C5114
C5115
C5116
C5117
C5118
2
CR300
D103
D104
D200
D201
2
D203
2
D204
D205
D301
D302
D303
D304
2
D400
2
D401
2
D500
D502
2
D513
2
3
4
5
6
FL300
FL301
FL302
4
3
2
FL303
4
3
2
FL304
O
J11
L103
L104
L105
L107
L108
L111
L113
L114
L119
L120
L122
L126
L203
L204
L205
L206
L207
L210
L211
L213
L214
L215
L303
L305
L315
M1
M2
M3
M4
M5
1
M6
1
M9
1
M100
M101
M102
M103
M104
M105
M106
M107
O
M108
O
M109
O
M110
1
P1
8
7
1
3
4
6
2
5
Q100
2
Q302
2
Q305
Q400
Q407
Q414
2
Q415
2
Q500
2
Q503
R106
R109
R148
R150
R151
R159
R171
R173
R174
R178
R179
R182
R200
R202
R206
R208
R211
R212
R217
R221
R222
R224
R225
R226
R228
R232
R233
R234
R302
R303
R304
R305
R306
R307
R308
R309
R311
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R322
R323
R324
R325
R327
R328
R329
R332
R333
R335
R337
R339
R406
R428
R429
R430
R431
R439
R440
R441
R444
R445
R450
R451
R458
R459
R461
R462
R472
R473
R601
R602
R610
R5000
R5001
R5009
R5010
R5011
R5019
R5021
R5022
R5024
R5031
R5032
R5033
R5034
R5038
R5039
R5040
R5043
R5044
R5045
R5046
R5047
R5048
R5050
R5052
R5053
R5054
R5055
R5056
R5057
R5063
R5064
R5065
R5066
R5067
R5068
R5070
R5071
R5073
R5074
R5075
R5077
R5079
R5080
R5081
R5082
R5083
R5084
R5085
R5086
R5087
R5089
R5092
R5093
R5094
R5095
R5096
R5097
R5098
R5099
R5100
RT100
1
SH200
1
SH202
TP3
1
16
8
9
U101
1
37
25
13
U200
11
1
20
10
U300
4
58
U301
22
21
8
7
1
U402
1
4
5
8
U500
5
2
3
4
U501
1
9
U502
1
45
8
U503
1
37
25
13
U504
1
4
58
U505
1
4
5
8
U506
3
2
1
U508
16
1
8
9
U509
U515
VR500
2
VR501
VR504
2
VR693
2
Y300
4
3
2
Y301
SHOWN FROM SIDE 1
OL 79B02969C76-O
OL 79B02969C78-O
UHF2 (438-470 MHz) 1-25 W 8488978U01 (rev. P9), Top Side
- Foreword 3
- Document Copyrights 3
- Disclaimer 3
- SAFETY INFORMATION 10
- Chapter 1 12
- INTRODUCTION 12
- 3.2 Motorola Online 13
- 3.3 Mail Orders 13
- 3.4 Telephone Orders 13
- 3.5 Fax Orders 13
- 4.0 Radio Model Information 14
- 1-4 INTRODUCTION 15
- Chapter 2 16
- MAINTENANCE 16
- 2-2 MAINTENANCE 17
- 2-4 MAINTENANCE 19
- 2-6 MAINTENANCE 21
- 2-8 MAINTENANCE 23
- SERVICE AIDS 24
- 2.0 Test Equipment 25
- OVERVIEW 30
- 1-2 OVERVIEW 31
- 2.3 Keypad Keys 33
- 2.6 Speaker 34
- 3.1 Power Supplies 35
- 3.2 SPI Interface 35
- 3.3 Keypad Keys 36
- 3.4 LCD Driver 36
- 3.7 Speaker 37
- (see table on next page) 39
- Key_Row Voltage TP402 40
- 2.1 Control Head Failure 41
- SHOWN FROM SIDE 1 46
- Control Head CM200 Schematic 47
- Bottom Side 49
- Top Side 49
- UHF2, 1-25 W, 438-470 MHz 58
- mP U403 90
- OL 79B02969C76-O 97
- OL 79B02969C78-O 97
- SHOWN FROM SIDE 2 98
- OL 79B02969C77-O 98
- OL 79B02969C79-O 98
- DC & AUDIO 100
- SHEET 2 OF 8 102
- 73D02968C74-O 102
- FRACN_63A27 103
- SHEE 5 OF 8 104
- TO SHEET 1 105
- SHEET 6 OF 8 106
- SHEET 7 OF 8 108
- SHEET 8 OF 8 110
- SHEET 3 OF 8 111
- List 1-25 W 112
- COMPARTMENT 123
- Option Board 126
- Keypad/Display 126
- CM200/CM300/PM400 150
- Computer Software Copyrights 151
- Table of Contents 152
- UHF2, 25-40 W, 438-470 MHz 156
- 2.0 Technical Specifications 157
- Transmitter 158
- Receiver 158
- THEORY OF OPERATION 160
- 2.2 Receiver Back End 161
- 3.3 Final Stage 162
- 3.4 Directional Coupler 162
- 3.5 Antenna Switch 162
- 3.6 Harmonic Filter 163
- 3.7 Power Control 163
- 4.1 Reference Oscillator 163
- 4.2 Fractional-N Synthesizer 164
- 4.4 Synthesizer Operation 166
- 5.1 Radio Power Distribution 167
- 5.2 Protection Devices 169
- 5.3 Automatic On/Off 169
- 5.6 SBEP Serial Interface 171
- 2-14 THEORY OF OPERATION 173
- 7.0 Transmit Audio Circuits 174
- 2-16 THEORY OF OPERATION 175
- 8.1 Sub-Audio Data (PL/DPL) 176
- 8.2 High Speed Data 177
- 9.1 Squelch Detect 178
- 2-20 THEORY OF OPERATION 179
- 9.4 Handset Audio 180
- 10.2 Alert Tone Circuits 181
- Chapter 3 182
- TROUBLESHOOTING CHARTS 182
- uP U403 188
- 3-8 TROUBLESHOOTING CHARTS 189
- Chapter 4 192
- Internal SPKR+ Jumper 197
- MRF1513’s Thermal pad 199
- LVFRACN Shield 201
- VCOBIC Shield 202
- FRONT-END SHIELD 203
- MIXER SHIELD 203
- IFAMP_DEC1 204
- IFAMP_DEC2 204
- AUDIOOUT 204
- AUDIO_FEED 204
- POWER SUPPLY 205
- TO SHEET 2 208
- UHF3, 25-40 W, 465-495 MHz 256
- VCOBIC Shield 330
- VCO Shield 330
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