Motorola PM400 Service Manual Page 104
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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UHF 1-25 W Band 2 PCB 8488978U01 (rev. P9) / Schematics 4-11
VCO Shield
VCOBIC Shield
DNP
DNP
DNP
DNP
DNP
73D02968C74-O
TO SHEET 2
SHEE 5 OF 8
IF200
10.K
V_SF
TX_INJ
RX_INJ
9R
1
120.p
C2081
R201
100.n
C2076
C2042
120.p
C2041
120.p 120.p
C2071
C2040
1
12.p
SHIELD
SH202
1
SH201
SHIELD
C2039
C2038
120.p
120.p
150.n
L204
L203
150.n
R223
220.
100n
C2003C2037
120.p
0.
R203
3.3p
C2044
C2019
120.p120.p
C2018
V_SFV_SF
R230
75.
R220
510.
VCO_MOD
V_SF
C2043
6.8p
NC
0.1uF
C2012
10n
NC
L202
C2022
680nH
2.4p
0.1uF
C2011
C2069
C2066
1.2p
2.7K
R216
2.7K
R215
6.2p
C2065
120.p
100.0n
L213
C2032
C2063
8.200p
4.7K
R214 L212
33n
R227
82.
R219
820.
C2031
1n
R213
1
3
2
4.7K
BFS540
Q200
100n
C2010
6.2p
C2064
L211
100.0n
L216
18.n
C2070
12.p
680nH
L201
3.9n
C2030
L207
7.80n
C2059
L215
47nH
5.1p
C2073
1.p
5.1p
C2058
C2062
12p
120.p
C2029
R233
220.
R222
47.
R212
47.K
6.8K
R211
1.K
R218
L206
12.5n
L214
R235
47nH
18.
47.
R232
R221
220.
1.n
C2021
C2057
5.1p
C2056
12p
C2061
5.1p
15p
C2060
100n
C2009 C2008
0.1uF
C2007
0.1uF
L209
100.0n
100.0n
L208
51.
R231
D205
D204
VCC_LOGIC
D203
SUPER_FLTR
19
TRB_IN
16
TX_BASE
15
TX_EMITTER
1
TX_IADJ
10
TX_OUT
13
TX_SWITCH
14
VCC_BUFFERS
18
GND_FLAG
GND_LOGIC
17
12
PRESC_OUT
5
RX_BASE
6
RX_EMITTER
2
RX_IADJ
8
RX_OUT
7
RX_SWITCH
3
50U54
U201
4
COLL_RFIN
20
FLIP_IN
11
GND_BUFFERS
9
UHF2 (438-470 MHz) 1-25 W Synthesiser and VCO (Sht 2 of 2)
- 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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