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Motorola Pr400 Detailed 6881096c25 B Manual

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Page 101

VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts Lists7-416881096C25-BJune, 2005Chapter 7 VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts Lists
RX_FE_VHF_R2
CONTROLLER
VCO_VHF_R2
TX_VHF_R2
RX_BE
SYNTH_VHF_R2
V_SF V_STEER 3V 5R
16_8_MHZ
3V 5V
LOCK MOD_IN
PRESC
SPI_CLK
SPI_DATA_OUT SYNTH_CS
TRB VCO_MOD RSSI5V5R
3V 5RUSWB+
5V USWB+ 5V
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 102

7-42VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts ListsJune, 20056881096C25-B
 
0.74V (Rx)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)
C3668nH
2%
24pF
1% C22
1000pFL33
L3
C41
1% 15pF 2% 68nH
FE_RF_INJ
  0 R26
1
C44
1% 20pF
SH1
SHIELD56pF R23
1% 22K
L21
NUC34
1% R24
750R51
51
33pF
1%C8
1% 30pF
63
2
1 C7
T42
 IF BALUN
5
NC
4  
CR1 13
2
MMBD352 L4
68nH
2%
C30
1% 24pF
0.1uF C99
4
63...

Page 103

VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts Lists7-436881096C25-BJune, 2005
100 mV RMS (25KHz)2.1V When -47 dBm @ antenna 320 mV (RF)
390 mV (RF)550mV (RF)
290 mV (RF) 0V for 12.5kHz
500mV (RF)0 V (25KHz)
1 V (12.5KHz)
170 mV (RF)2.14 V
110 mV (RF)170 mV (RF)
130 mV (RF)0.33 V0 V (12.5 KHz)
5V for 25kHz
490 mV (RF)50 mV RMS (12.5KHz) 0.62V 1.23V
165mV (RF) 0 V (25 KHz)
2.8V (12.5KHz)
3.39V
3.05V
0.74V2.8V (25KHz) 0 V (12.5 KHz)
1V (25KHz)0 V (12.5 KHz)
5V (25KHz) 5 V (12.5...

Page 104

7-44VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts ListsJune, 20056881096C25-B
1SV23247k
3V
2.7pF
150k
45J68 D201 C203
100
NU
NUTCXO
220pF
44 mV (RF)
205 mV (RF)
2.4 V (TYP) TX: 3VLOCK: 3V
C202
0.01uF
R206Crystal
107 mV (RF)
14R06 NU
Reference Oscillator
3V
0V0V
Y201NU C206NU
R202NU
Y202 C201
NU
RX: 0V3.0V to 8.0V 4.5V
UNLOCK: 0V
NU 62pF
NC
470pF C210C243
0.1uF
NC
4.7uF
C230C233
C212
NC
2.2uF
5V
5V 2.2uF
FN_CLK 
A25 A34
K1 1K2 2K3 3 
D221
A16
.01uF
NC
FN_VCO_MOD
C2212K R243...

Page 105

VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts Lists7-456881096C25-BJune, 2005
4.5V
RX: 0V TX: 3V206 mV (RF)
850 mV (RF) 1200 mV (RF)
1.35 V (Rx) 1.89 V (Rx) 3.0V to 8.0V
 18 R270
VCO_MOD
L252
560nH
NU
C266
1.0% 10pFL2839.1pF C282 47 R253
11pF
L265
330nHC286
 330 R284
1SV229D262 3.7% 2.7pF C268
5.1pF C273
.01uF 9.1K
C276
 VCO_TX_INJ
R272
3.3pF
3.0% C254
180 R283
1200pF C27551pF C290
2
L264
2% 47nHBFS540 Q280
  13
30 R263C285
0.1uF C274
0.1uF
68nH L281
18
L254
2% 33nH
3
19
TRB_IN...

Page 106

7-46VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts ListsJune, 20056881096C25-B
3.0 V (Hi)
1100 mV (RF)DO NOT MEASURE
0.9 V (Tx) 7.5 V
1500 mV (RF)
4.9 V (Tx)
820 mV (RF)1.5 V (Tx)0 V (Rx)
1.6 V (Tx)
0 V (Rx) 0 V (Rx)
0 V (Rx)
7.25 V (Tx) 1.8V (Tx)7.5 V
7.4 V (Rx)0.15 V (Tx)
0.15 V (Tx)
2.5 V (Low)
3.0 V (Hi)
2.4 V (Hi)
1.06 V (Low)0 V (Rx)
7.3 V (Tx)
2.5 V (Low)
27pF C134 0.1uFC155
TP150
1
R105
1.2K
 
PA_5T
C151
1500pF
1% R155
PA_USWB+
 
100K
L100
560nH
C136
13pF C153
0.47uF R524...

Page 107

VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts Lists7-476881096C25-BJune, 2005
DC_REGULATION
AUDI
O
MICROPROCESSOR
ACCESSORY/KEYPAD
CONNECTOR3V
CNTL_MOD_OUT
SWITCHS4411
A1
3
A22
B1
4
B2
24
CNTL_RSSI
3V 8C501
1uF 17BK1005HM471 E500
C505
1000pFR504
100 7
CNTL_USWB+
5V
CNTL_SPI_DATA_OUT
CNTL_5R
C506
1000pF11
C503
1000pF
CNTL_SYNTH_CS
3
A22
B1
4
B2
CNTL_SPI_CLK
3V D3_3V
SWITCHS443
1
A1
21
SW_B+
NC
1819
16
TP404 15
C408
1000pF
C1C1GND7GND19PC01
PC12
PC24
PC3 8
D3_3V
SWITCHS440
C0C0...

Page 108

7-48VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts ListsJune, 20056881096C25-B
EEPROM
GREEN LED RED LED
FLASH
SRAM10KR410
820
R411
CS 1
HOLD 7SCK 6
SI 5SO2
VCC8VSS4 WP 3
D3_3V
U402
X25128-2.7
.01uF 0.1uF
C422
NC
C4134.7KR419
R434
NU
91
R413
100K
69
VRH68
VRL
13
VSS
40
VSSL 87
VSSRXFC93
48
XIRQ
XTAL
76
PJ5
77
PJ6
78
PJ794
RESET
12
VDD
39
VDDL88
VDDR92
VDDSYN
PI4 51
PI5 50
PI6 49
PI7
71
PJ0_CSGP3
72
PJ1_CSGP4
73
PJ2
74
PJ3
75
PJ4
42
PH5_CSGP1
41
PH6_CSGP2
38
PH7_CSPROG
56
PI0 55
PI1...

Page 109

VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts Lists7-496881096C25-BJune, 2005
0 V (Rx) R516
MICROPHONE CONNECTOR
3 V (Tx) Not Placed
7.5 V 100k
3.5V (UNSQ)
3.5V (UNSQ)
0.15 V (UNSQ)
3 V (UNSQ) 1.5 V145 mV RMS 114 mV (RF)
Supply = 7.42
1/2 Supply = 3.22
INTERNAL SPEAKER
0
Not Placed R517 0Not Placed Not Placed
3.46 V RMS (Rx)(0.5 W@24 OHMS
VHF UHF
R513
R515
ACCESSORY CONNECTO
R
DC Level 0.3 - 0.4 V low
Not Placed2.3 V150 mV RMS (25 kHz) (Rx)
75 mv RMS (12.5 kHz) (Rx)
1.5 V
200 mV...

Page 110

7-50VHF 146-174 MHz (8486342Z13-C) Schematic Diagrams, Overlays, and Parts ListsJune, 20056881096C25-B
5 V (Rx)
0 V (Tx)0 V (Rx)
5 V (Tx)
3.3 V (Rx)
0 V (Tx)
0 V (Rx)
3.3 V (Tx)5 V 
3.3 V 
3.3 V 
3 V  0 V  (OFF)7.5 V  (ON)
0 V  (OFF) 3.3 V  (ON)7.5 V  
0  V (Tx)
0 V (Rx)
5 V (Tx)
5 V (Rx)
0 V  (OFF) 7.5 V  (ON)
7.5 V  (OFF)0 V  (ON) 100 R50610uF C312
C302
390pF
10uF C334 F301
3A
GND2 1
VIN VOUT5
C333
.01uF U310
TK71750S
BYPASS 4CTRL 3
R310
100K
VR302
MMBZ5250B
20V
C316
1200pF
R509
100K
NC
Q493
3
1 2
100K...
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