Schematic Diagram For Pmld4036A/Pmld4037A Vhf Rf Board, 20/25/12.5 Khz - Motorola GP68 Service Manual

RECEIVER FRONT END
L1
C2 56nH C5 C6
68pF 13pF 7.5pF
C1 C4 L2 C7
27pF 47pF 56nH NU
CR1
C148
TXB+
20pF
R174 E101
1000
C147
C145 NU
BEAD
CR102
13pF C159
C157 C158
C139 CR151
1nF 1nF 1nF
L115 1nF
C160
59.71nH
NU L109
27.39nH
R115 R173
68
390
J401 R121
C165 C166 C168
51
R172
L111 150
8.2pF
7.5pF 11pF 0.68uH Q104
1 C
L114 L113 L112 A B 2 L108 L110
C144 CR101 C143 13.9nH 4.22nH
30.51nH 30.51nH 33.47nH 3 4 B
C D
C131
E2 E1
4 Pin 1nF C169 C142 C141 C140 1nF C136 C137
E
6.8pF 12pF 22pF 27pF 5 F 6 36pF 82pF
47pF
SUTERA_COUPLER
R178
R177 150
150 R175
C163 1000
R176
CR152
18K
1nF
C164 C162 C161
1nF NU
2pF
TXB+ VCTL +5V
B+
Q156 Q155
3 1 2 3 C151
0.1uF
C155
0.1uF
R164 R161
2 1
680 1000 2 Q152 R159
10K
1
4 1
U151
2 5 3 R160
RFEN
C153 1000
C156
3
Q153
470pF 3 6
IDAC
0.1uF
1
C154
3.3uF
R165 R162
POWER CONTROL CIRCUIT 62 C152
1000 2 R150
1000
1nF
TPB+
T1 BATTERY PACK
1
JU202
E303 F301
P401
510pF
3.5A
BEAD
B+ BAT+
JU201 C309 C310
CR301 male_th 7.5V
1nF 1nF 2 Pins
330pF
DC DISTRIBUTION
+5VRX
RECEIVER 1ST IF STAGE
C13
1nF
L52
C15 C16 C14 560nH
R2
10nF 1nF
0.1uF
RECEIVER SECTION
7500 R51
R4 51
R1 3 330
C25 C29
1800 Q1 L5 L6 L7 C31
C21 62pF 180pF 1nF
30.51nH 30.51nH 30.51nH
1 1 4
RF U41 IF
3 5 C51 L51
LO MIXER GND3 0.39uH
180pF 2 GND2 6 33pF
GND1
C20 C23 C26 C30
2
R3 43pF 120pF 110pF 51pF
4700
C17
R5
1nF 4.7
LO
B+
+5VTX TXB+
3 VCTL +5VTX
C133 C132 C104 C113
1nF 1uF 100pF 0.1uF 1
C125 C126
Q106
1nF 1uF
C116 C115 C108
0.1uF 1nF 0.1uF
2
C134 L106
R118
47nF C122 33nH 39 L104
560nH
R111 1nF
91
R108
C120
R112 390
R105
4700
120
1nF C114
C
C129 C127 C117 Q102
L119 3 1nF
0.1uF 1nF
680pF 4.22nH L105 L103
B
1
27nH 82nH
E2 E1
C103 R122 R120 C123 C128 L117 R106
150pF 15 NU 200pF C119 C118 1000 C112
NU 12nH 2
Q103 30pF 30pF 15pF
BLT50
R107
4.7
E102
5 WATT POWER AMPLIFIER
R110
10 BEAD
TXO
3DBM
136 - 174 MHZ
+F5V
C261
LO
+5DBM R258
R257 C278
100
181.1 - 219.1 MHZ 6.8pF
L258
62K 1.2uH
C279 1nF
C288 C280 0.1uF
C289
16pF
1nf
C287
C262
1nF
9.1pf
R254
5.1pF L265
L266 220
1.2uH 100nH
L267 C282
2 11
RX B1
33nH C267
C286 C285 5.6pF 0.22uF
4 12
10pF 10pF U251
TX BI1
VCO BUFFER IC
22 NC4 VC 13
R251
220
24 14
NC5 BI2
C277
R264 L264
C291 1nF C258
15 100nH
1 B2 15 0.22uF
GND2
1nF
R265 R263 C276 C275
300 300
9.1pF 9.1pF
C252
CHGP
C269 5.6pF
1nF
VCO TOP SHEILD
C271 R256 L251 C251
SH201 1nF 7.5pF
20K 1.2uH
C268
R255
1nF
+F5V 7500
1
CHGM
C270
1nF
R52 R54 R55
+5VRX
33K 2000 100 CF51 CF52
C84 3 3
C58
R56 C57
390pF C50 0.1uF
20pF 1 2 1
750
0.1uF 2.5VDC 2.5VDC
4.6VDC
3.8VDC
3
CR51
C53
Y51 Q51 C54
1 3
45.1 1 30pF
C59
0.75VDC
36pF 6 PPC_AMP_IN
2
2
C52 0.1uF 1.5VDC 5
NU R53 C55 L54 C56 PPC_AMP_OUT
24pF 0.39uH C60
12K NU
0.1uF
3VDC 8 IF_IN
1
B+ GND
13
2 A+_B+
R63 14
DRIVE
10K Q53 C61
U51
7
4.4VDC LO_IN
3 IFIC
1
3.9pF 2.6VDC 10
OSC_OUT
R117 1 Q52
180 +5V 3 9
3.4VDC
OSC_FB
27
C107 C106
2 +5VRX T_R
1nF 1nF C85
0.1uF 2
+5V VCC1
L102 R64
560nH 10K C63 12
R58 VCC2
C62 5600
36pF
R104 17
13pF
430 VCC3
34
VCC4
R101 C105
C110 1
3 1200 1nF
1nF 25
3.7VDC
R57 Y53 RSSI_OUT_2
1 44.645
820
C67
3-5VDC
C111 Q101 R102 2 0.1uF
12pF 1000
2
C64
16pF C68 R59 C69
C70
3.3uF 100K .039uF
R103
4.7 4.7uF
L55
1.2uH C65 C66
4.7uF 0.1uF
C238
100pF
Multiplier
CR202 CR201
NC
C203
C231 C222 C204 10nF
0.1uF 1nF 4.7uF C202
10nF
R205
C265
2200
C263 43pF
C215 C216 R202 29
L201 I_OUT
39pF CR253 5.6nF 0.1uF 1000
L260 R260 L261
L259 1200 1.2uH 31
39nH 1SV232 100nH
I_ADAPT
1.2uH
4
R204 GND
51
Loop Filter
13
GND
U201
30 GND
+F5V FRACT-N SYNTHESIZER IC
C214 28
1 MOD_OUT
1 1uF
1
L256 L257 T1 T1 AUX_3
C266
1.2uH 1.2uH 1nF SL1 SL 20
PRE_IN
C259 C217
1nF C260
0.1uF
C235
L252 4.7uF
1.2uH .018uF
C253 VCO SECTION C255 L254 C224
R259 NC
18pF 51pF NU 120nH 1nF
R203
160K
L253 C256 CR251 C209
C272
C254 2pF 1nF
68nH
NU C210 C212
L270 4.7uF 1nF
R253
15pF
1.2uH 5600 L204 L203
0.15uH 1.2uH
CR252 L255
C257 C273
R252
82nH 1nF 1nF 2200 C227 C226
18pF 2pF
C220 C221
150pF
150pF
+F5V
Prescaler Filter
+F5V
C74
1.5nF
RECEIVER BACK END
2
( FM DEMODULATION )
4.3VDC 4.3VDC
1.6VDC
DEMOD_OUT 31
C75
0.47uF J301
AUDIO_IN 29 2.4VDC
CONN_RF
AUDIO_OUT 28 2.5VDC 7
DETAUDIO
C77
23 2.4VDC 6
2.4VDC
SQ_LIM_OUT SQATIN
C79 0.1uF
20 2.4VDC 2.4VDC 14
SQ_ATTEN_IN SQATOUT
51pF
22 OVDC 12
ADAPT ADAPT
5VDC (UNSQ)
15 OVDC (SQ) 10
SQ_OUT CSQDET
5VDC (UNSQ)
18 5
OVDC (SQ)
FAST_SQ FASTSQ
30 5VDC 4
C76 C80 C81 C82
SQ_NOISE RSSI
1nF 1nF 1nF 1nF
3
B+ B+
1.8VDC
0.65VDC 1
GND GND
C73
C71 R60 R61
510pF
.1uF 13K 68K 16
+5V +5V
C72
8
+5VRX +5VRX
10nF
R62
7500
9
+5V +5VTX +5VTX
L205
2
560nH
IDAC IDAC
C243 C213 C241 C240 13
RFEN RFEN
0.1uF 0.1uF
0.1uF 0.1uF
11
LOCK
C237
100pF 18
SYNEN
C219 C228 15
MODIN
150pF 150pF
C218
20
1nF
FREF
8
MOD_IN 19
R206 CLK CLK
11
FREQ_OUT
2200 R215 17
DC_5V_REF_OSC 12
1000 DATA DATA
XTAL_1 14
C205
15
R216
XTAL_2
C223 24K
16 270pF 33pF
WARP
17 C230
SUP_CAP
1
0.1uF
R211
Y201
47K
16.8MHz
2
+5V
NC
L206
C233
CR203
560nH 4.7pF
C239
C236 C208
1nF 0.1uF
4.7uF C207 C211 C206 R207
2200
NU 47pF
4.7uF
CLK
DATA
SYNTHESIZER SECTION
63D81086C55-O
March, 1997
Schematic Diagram for
PMLD4036A/PMLD4037A
VHF RF Board, 20/25/12.5 KHz
(For the 12.5 KHz RF Board
component values, please refer
to the parts list.)
3
6881086C09-O