Motorola PM400 Service Manual Page 98
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UHF 1-25 W Band 2 PCB 8488978U01 (rev. P9) / Schematics 4-5
C300
C321
C323
C324
C325
C326
C327
C328
C329
C330
C331
C332
C333
C334
C335
C338
C339
C340
C341
C342
C343
C344
C345
C346
C347
C348
C349
C350
C351
C353
C354
C355
C356
C357
C358
C366
C367
C368
C370
C400
C401
C403
C404
C405
C407
C408
C410
C412
C413
C415
C416
C417
C421
C422
C423
C1000
C1002
C1027
C1028
C1029
C1032
C1035
C1036
C1040
C1043
C1045
C1046
C1047
C1050
C1051
C1053
C1054
C1059
C1060
C1061
C1062
C1066
C1067
C1070
C1071
C1072
C1073
C1075
C1076
C1077
C1078
C1079
C1080
C1081
C1083
C1085
C1086
C1089
C1090
C1091
C1092
C1093
C1096
C1101
C1103
C1106
C1107
C1109
C1110
C1111
C1112
C1121
C1126
C1127
C1128
C1130
C1132
C1260
C1261
C2000
C2003
C2005
C2006
C2007
C2008
C2009
C2010
C2011
C2015
C2017
C2018
C2019
C2020
C2021
C2022
C2023
C2029
C2031
C2032
C2034
C2035
C2037
C2038
C2039
C2040
C2041
C2042
C2043
C2044
C2045
C2046
C2047
C2048
C2049
C2050
C2051
C2053
C2054
C2060
C2065
C2070
C2071
C2072
C2076
C2129
C2198
C5000
C5002
C5007
C5009
C5017
C5031
C5036
C5037
C5039
C5040
C5041
C5045
C5049
C5055
C5058
C5060
C5061
C5063
C5065
C5067
C5069
C5072
C5073
C5075
C5077
C5082
C5083
C5084
C5085
C5086
C5091
C5092
C5094
C5097
C5098
C5099
C5104
C5119
C5120
2
CR301
2
D100
2
D102
D105
D106
D202
2
D305
D402
2
D501
2
D511
1
J2
29
28
2
29
30
32
31
J3
L100
L101
L115
L117
L118
L121
L200
L201
L202
L208
L209
L212
L216
L217
L300
L301
L302
L304
L306
L307
L308
L309
L310
L311
L312
L313
L314
L500
L501
L502
M111
M112
M113
M114
1
P2P2
2
Q101
2
Q102
2
Q103
1
2
3
Q105
Q106
Q106
Q200
Q201
Q300
2
Q301
Q303
Q304
2
Q306
2
Q401
Q403
Q404
Q405
Q408
Q409
Q410
Q411
Q412
Q413
Q416
2
Q417
Q501
Q502
Q504
2
Q505
2
Q506
R103
R104
R107
R108
R117
R118
R119
R122
R126
R127
R128
R130
R131
R134
R135
R136
R137
R138
R139
R140
R141
R142
R143
R145
R147
R149
R153
R155
R156
R157
R158
R160
R161
R165
R166
R167
R168
R169
R170
R172
R175
R180
R181
R183
R185
R186
R201
R203
R204
R205
R207
R209
R210
R213
R214
R215
R216
R218
R219
R220
R223
R227
R229
R230
R231
R235
R300
R301
R310
R326
R330
R331
R334
R336
R338
R340
R345
R346
R347
R401
R402
R403
R404
R405
R407
R414
R415
R421
R422
R423
R424
R425
R426
R427
R432
R433
R434
R435
R436
R438
R442
R443
R453
R454
R455
R456
R457
R460
R463
R466
R467
R468
R469
R470
R471
R600
R603
R604
R615
R5002
R5008
R5013
R5014
R5016
R5020
R5023
R5025
R5026
R5027
R5028
R5029
R5030
R5035
R5036
R5037
R5041
R5042
R5049
R5051
R5058
R5059
R5060
R5061
R5062
R5069
R5072
R5076
R5078
R5088
R5103
1
6
54
3
2
S5010
1
SH201
SH300
SH301
SH302
6
4
3
T300
6
4
3
T301
TP1
TP2
TP4
TP150
TP200
TP201
TP400
TP401
TP402
TP403
TP404
TP405
TP406
TP407
TP408
TP409
TP410
TP425
TP425
TP500
TP555
TP556
1
4
5
8
U100
1
4
5
8
U102
87
1
14
U103
11
1
20
10
U201
U302U302
1
4
58
U400
1
76
51
26
U403
32
17 16
1
16
1
8
9
U405
1
4
5
8
U507
U510
U514
2
VR101
2
VR102
2
VR400
VR401
2
VR402
VR502
VR503
2
VR692
2
VR694
2
VR695
2
VR696
2
VR697
2
VR698
2
VR699
Y200
4
3
2
Y201
8488978u01_p9
SHOWN FROM SIDE 2
OL 79B02969C77-O
OL 79B02969C79-O
U404
UHF2 (438-470 MHz) 1-25 W 8488978U01 (rev. P9), Bottom 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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