Service Manual Part 7
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ABCDEFGHI J KL MNOPQRSTUVW
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ABCDEFGHI J KL MNOPQRSTUVW
REV/ISS AMENDMENTS DATEAPVDD.O.CHKDDRAWN
NO.SHEETS:FILE NAME:
TAIT ELECTRONICS
IPN:
FILE DATE:
ISSUE: ID:
2.SC.
PROJECT: DESIGNER:
1
2
T2000-300 VHF MOBILE RADIO
PROGRAMMABLE
2K3DBL1A
220-01314-01
18-10-96
A
2K3 DUAL-BAND JOE
0V.AT-REST
+9DBM/50.OHM
TX:3V4
TX:+4V3
RX:+3V3
TX:8V0
TX:12V0
TX:0V7
TX:13V3
TX:0V7
RX:0V
CONTROL-VOLTS
6V5
13V5
RX-FREQ
136MHZ
174MHZ
P1 PROGRAMMABLE T2K3, CLONED OFF 2K3VFL7B J.F. J.F. 28/3/94
+5DBM/50.OHM
CONTROL
RX
7V8
13V0
VOLTS
TX
4V5
9V2
RX-FREQ
136MHZ
174MHZ
P2 UPDATED FOR BOM COMPARISON. J.F. J.F. 24/5/94
*TYPE
DUALBANDWIDTH
STANDARD
*R129
-
0S
*R130
4K7S
0S
*R134
4K7S
-
*R137
10KS
-
*R151
1K5S
3K3S
*R152
220KS
390KS
*R154
22KS
-
*R162
18KS
-
*R163
3K3S
-
*R164
470KS
-
*R165
560KS
-
*R166
2K2S
-
*R167
10KS
-
*R168
4K7S
-
*R170
2K2S
-
*R194
390KS
0S
8V0.AT-REST
*C120
47UFI16
-
*C189
150PS
470PS
*Q117
BC848
-
*Q118
BC848
-
*Q119
BC848
-
*R136
220KS
-
*R139
10KS
-
*C190
150PS
470PS
*Q116
BFR31
-
*Q120
BC848
-
P5 ADDED A DUALBAND CIRCUIT FROM ISSUE P2 YH 01/8/95
DIVIDE-BY.64/65
136-201.7MHZ
P6 ADDED 1N0 CAPS FOR EMC PROBLEM(BY P3) YH 02/11/95
1A CHANGED VALUES OF R219,C230,R149,C156 TO R162. YH 15/12/95
+6DBM/50.OHM
+6DBM/50.OHM
*C120
47U
*C189
150P
*C190
150P
*R129
0
D
S
G
*Q116
BFR31
*Q117
BC848
*Q118
BC848
*Q119
BC848
*Q120
BC848
*R130
4K7
*R134
4K7
*R136
220K
*R137
10K
*R139
10K
*R151
1K5
*R152
220K
*R154
22K
*R162
18K
*R163
3K3
*R164
470K
*R165
560K
*R166
2K2
*R167
10K
*R168
4K7
*R170
2K2
*R194
390K
C1
1N0
C100
10N
C102
47P
C103
22P
C104
100N
C105
1P8
C106
680P
C107
33P
C108
10N
C109
8P2
C110
120P
C111
680P
C112
10P
C113
120P
C114
680P
C115
8P2
C116
680P
C121
33P
C122
680P
C123
10N
C124
22P
C125
6P8
C126
22P
C127
56P
C128
33P
C129
10N
C130
10N
C133
270P
C134
10P
C135
150P
C136
27P
C137
680P
C138
27P
C140
10P
C141
270P
C142
33P
C145
100P
C147
10N
C148
18P
C149
10N
C150
100P
C151
100N
C152
100P
C152A
10N
C153
4U7
C153A
100P
C154
10N
C155
100P
C157
100N
C158
1N0
C160
270P
C174
47U
C175
100N
C176
100N
C180
100N
C181
100N
C185
10N
C186
10N
C187
1N0
C188
100P
C191
1N0
C192
33P
C193
4U7
C194
680P
C195
680P
C196
100N
C197
100N
C198
220P
C199
1N0
C2
1N0
C200
10N
C205
680P
C207
10N
C208
10N
C209
10N
C210
10N
C211
150P
C212
3P9
C213
47U
C214
680P
C215
4U7
C216
10N
C217
47U
C218
4U7
C219
4U7
C220
15N
C221
1U0
C222
100N
C223
680P
C224
680P
C225
680P
C226
2P2
C227
680P
C228
680P
C229
47U
C230
4N7
C231
680P
C232
6P8
C233
4U7
C234
4U7
C235
10N
C236
39P
C239
10N
C240
680P
C241
680P
C243
680P
C244
6P8
C245
12P
C246
680P
C247
4P7
C248
10N
C257
18P
C3
1N0
C300
4U7
C301
1N0
C302
5P6
C303
100N
C304
1N0
C305
22P
C306
22P
C307
100N
C308
680P
C309
18P
C310
680P
C311
100N
C312
3P9
C313
47P
C314
120P
C315
680P
C316
680P
C317
680P
C318
680P
C319
680P
C320
56P
C321
100N
C322
30P
C323
680P
C325
270P
C326
1N0
C327
100N
C328
10N
C329
82P
C330
100P
C331
68P
C332
15P
C333
680P
C334
22P
C335
5P6
C336
680P
C337
680P
C338
33P
C339
33P
C340
68P
C341
68P
C342
220P
C345
680P
C346
12P
C347
8P2
C348
680P
C349
680P
C351
30P
C352
27P
C352A
27P
C353
1N0
C355
100N
C356
1N0
C360
680P
C403
470P
C410
4U7
C411
100N
C412
47U
C413
100N
C414
470U
C415
1000U
C416
1N0
C419
100N
C420
100N
C423
56U
C424
4U7
C425
4U7
C426
4N7
C427
4U7
C428
4U7
C429
680P
C430
56U
C431
10N
C451
1N0
C455
1N0
D1
MR2520
D101
BB419
1
2
D102
BB419
1
2
D103
BB419
1
2
BAT18
D105
2
3
BAT18
D106
2
3
BAT17DS
D107
3
1
BAT17DS
D107
2
3
BAT17DS
D108
2
3
BAT17DS
D108
31
BAT17DS
D110
31
BAT17DS
D110
2
3
BAT17DS
D111
2
3
BAT17DS
D111
3
1
BAT18
D140A
2
3
BAV70
D202
2
3
D203
BB419
1
2
D204
BB419
1
2
D205
BB419
1
2
D206
BB419
1
2
BAT18
D208
2
3
BAT18
D209
2
3
D301
1SS97
BAV70
D302
2
3
D303
UM9401
D304
UM9401
BAV70
D401
13
BAV70
D401
2
3
IN
IN OUT
PD
OUT
RV
SYNTHESISER
IC201
145158-2
F
8
DATA
10
CLK
9
EN
11
GND
6
F
13
F
3
OSC
1
OSC
2
REF
14
MC
12
+V
4
LD
7
OUT
5
PR
16
PV
15
IC203
12022AD
IN
1
GND
5
IN
8
SW
3
NC
7
VCC
2
MC
6
OUT
4
VREG
IC403
7808ACT
VIN
1
GND
2
VOUT
3
VREG
IC404
7805ACT
VIN
1
GND
2
VOUT
3
L1
#4S3B
L101
4.5T/4.5
L104
#668
L105
#668
L106
#668
L107
RF BALUN
3
2
1
4
6
L108
RF BALUN
3
2
1
4
6
L109
2.5T/3.5
L110
1U0
L114
#662
L116
#662
L117
RF BALUN
3
2
1
4
6
L118
RF BALUN
3
2
1
4
6
L119
#655
2
3
6
1
4
L120
M21B
L200
M21B
L202
100NH
L203
#662
L205
820N
L206
#1008
L207
820N
L208
5.5T/3.0
L210
5.5T/3.0
L300
4S3
L301
2.5T/4.0
L302
4.5T/4.0
L303
1U5
L304
2.5T/3.5
L305
4.5T/4.0
L306
M21B
L307
1.5T/5.0
L308
4S3
L309
#4S3B
L310
1.5T/4.0
L311
4.5T/4.0
L312
330NH
L313
2.5T/5.5
L314
4S3
L315
3B BEAD
L316
1.5T/3.0
L316A
1.5T/3.0
L317
1.5T/5.5
L318
8.5T/3.5
L319
1U5
L320
5.5T/4.5
L321
820N
L322
2.5T/4.0
L323
1.5T/4.0
L324
1.5T/4.0
L325
2.5T/4.0
L326
4S3
L327
528
L331
M21B
L401
#650
2
36
1
4
PAD
I/OPAD
D
S
G
Q100
BFR31
Q101
951
Q102
BC857
Q103
951
Q105
951
Q106
BC848
Q107
BFS17
Q108
BFS17
Q109
BF824
Q110
BFS17
Q115
BC848
Q201
BC857
Q202
BC848
Q203
BC848
Q204
BC848
Q205
BC857
Q206
BC848
Q207
BC857
Q208
BC848
Q209
BC857
D
S
G
Q210
BFR31
Q211
BC807
D
S
G
Q212
MMBFJ310
Q213
BC848
Q214
951
Q215
951
Q301
951
Q302
MRF4427
6
7
1
4
2
3
5
8
Q303
BC848
Q304
BD234
Q305
BFQ43
Q306
MRF1946A
Q307
BC848
Q308
BC807
Q309
BC807
Q401
BC857
Q402
BC817
CW
RV153
47K
2
3
1
CW
RV222
47K
2
3
1
CW
RV324
470K
2
3
1
R100
180
R101
3K9
R102
560
R103
2K2
R104
120
R105
18
R106
100K
R107
100K
R108
100K
R109
0
R110
150K
R111
150K
R112
47
R113
4R7
R114
820
R115
12K
R116
4R7
R117
10
R118
100
R119
10
R120
820
R121
180
R122
100K
R123
100K
R124
100K
R125
10
R131
100
R132
2K2
R133
270
R135
10K
R138
100K
R140
68K
R140A
33K
R141
1K5
R142
27K
R142A
100K
R143
33K
R143A
33K
R144
68K
R144A
120K
R145
1K5
R145A
33K
R146
22
R147
220
R148
560
R149
0805
R150
100K
R153
1K0
R155
100K
R156
100
R157
10K
R158
1K0
R159
47
R160
10
R161
1K0
R162
0
R195
68K
R196
100
R197
100
R198
2K2
R199
100
R213
330
R214
1K2
R218
12K
R219
270
R220
6K8
R221
330
R222
47
R223
22K
R224
10K
R225
22K
R226
10K
R227
10K
R228
3K3
R229
22
R230
390
R231
180
R232
2K2
R233
680
R234
180
R235
330
R236
47
R237
100
R238
8K2
R239
22K
R240
100K
R241
1K2
R242
22
R243
2K2
R244
22
R245
22
R246
470
R247
47
R248
100K
R249
10
R250
2K2
R251
120
R252
1K8
R253
820
R254
47
R255
10
R256
1K5
R257
1K2
R258
10
R259
220
R260
18
R261
10
R262
2K2
R269
10
R270
10
R271
150
R272
150
R273
10
R274
3K9
R275
10
R278
100K
R282
120
R284
10K
R285
15K
R286
6K8
R287
100K
R288
180K
R300
68
R301
330
R302
1K0
R303
680
R304
22
R305
10
R306
10
R307
680
R308
330
R309
33
R310
330
R311
820
R312
680
R313
33
R314
10
R315
47
R316
10
R317
10
R318
10
R318A
10
R319
330
R320
15K
R322
22
R323
10
R324
180
R325
180
R326
220K
R327
1K0
R328
150
R329
47K
R330
220K
R331
270K
R332
100
R333
2K2
R334
56K
R335
1K8
R336
680
R337
0
R338
220
R339
10K
R340
220K
R341
220
R418
680
R420
56K
R420A
0
R421
56K
R421A
0
R422
22
R425
1K0
R426
4R7
R427
4R7
R428
22
R429
27K
R430
6K8
R431
100K
R432
10
R433
100
R434
47
R437
1K0
S4
I/OPAD
TP301
I/OPAD
IC101
3371D
10
11
OUT
IN
IC101
3371D
LIM
5
GND
15
VCC
4
DEC
6
DEC
7
QUAD
8
AF
9
RSSI
13
IC101
3371D
12
14
+
-
IC202
33078D
3
2
1
+
-
IC202
33078D
5
6
7
1020
IC402
+
6
GND
9
SUB
1
SB
5
VCC
3
BS
4
O/P
2
P1
+5V
15
P1
+8V
10
P1
+8V-SYNTH
9
P1
AF-SIG
8
P1
BUSY
3
P1
CLK
12
P1
DATA
13
P1
DET-AF
5
P1
ENABLE
14
P1
GND
4
P1
GND
16
P1
GND
1
P1
LCK-DET
11
P1
LF-SIG
6
P1
MOD
7
P1
RSSI
2
P2
+13.8V
8
P2
+13.8V-US
6
P2
+13V-ECON
5
P2
+5-VOLTS
7
P2
+8V-OUT
9
P2
+8VTX
10
P2
AUDIO-PA
1
P2
EXTRNL
3
P2
GND
2
P2
IGN
4
P2
PWR-CNTRL
12
P2
PWR-SENSE
11
P3
AUDIO
4
P3
EXTRNL
1
P3
GND
5
P3
GND
3
P3
IGN
7
P3
SPKR
2
P3
13.8V-UNSW
6
P5
+8VOLTS
7
P5
AF-OUT
10
P5
CMPRTR-OUT
6
P5
DETECT-AUDIO
8
P5
FILTER
3
P5
GND
2
P5
IF-B/W
1
P5
MIXER
4
P5
NSE-DET
5
P5
455-OUT
9
P6
+8V-SYNTH
4
P6
+8V-SYNTH
10
P6
AF-SIG
9
P6
GND
3
P6
GND
2
P6
LF-SIG
7
P6
MOD
6
P6
REF-MOD
5
P6
TCXO
1
P6
TX-AF
8
P7
INT
2
P7
SPKR
1
+13.8V
+13.8V
+13.8V-UNSW
+13.8V-UNSW
+13.8V-UNSW
+13V-ECON
+13V-ECON
+30V
+5-VOLTS
+5-VOLTS
+5V
+5V
+5V
+8-VOLTS
+8-VOLTS
+8-VOLTS
+8-VOLTS
+8-VOLTS
+8V
+8V
+8V
+8V
+8V
+8V-OUT
+8V-OUT
+8V-SYNTH
+8V-SYNTH
+8V-SYNTH
+8V-SYNTH
REF-MOD ADJ
SYNTHESISER
LOOP FILTER
8
4
C206
R217
DELAY LINE
+8V-TX
RX-TUNE VOLTAGE
1ST MIXER
PDL16M
PDL12M
P1 TO CONTROL PCB
P2 TO CNTRL PCB
+30V FROM REGULATOR
PIN SWITCH
PRINTED
X3 MULTIPLIER
8
7
AUDIO PA
IF PCB
(VIA R1)
TO LOOM CONNECTOR P2 PIN-6
& RF POWER-AMP
2
3
3
1
D200A
D200B
BAV99
D200
PRINTED
COUPLER
PRINTED
PRINTED
PRINTED
PRINTED
PRINTED
PWR-CNTRL
PRESCALER
47
100N
4S3
4S3
*
L300
DUAL SMALL 4S3 BEADS
*
I = 23.0MA
TCXO & IF PCB
UNDER-WALL DECOUPLING
+8V-TX
NOISE BLANKER
TRACK-FUSE
PCB-GND
INTERNAL SPKR
PL2U
SPKR
GND
SK7HMCH
CUT FOR EXTRNL SPKR
GND
TO CNTRL-PCB VIA P2 PIN-9
TO LOOM CONNECTOR P2
PIN-7
TO LOOP-FILTER
IC202, PIN-8
FROM CNTRL PCB
+13.8V-ECONOMY
VIA P2-PIN 5
3
2
16
1
C179
FROM +8V REGULATOR ON
CNTRL-PCB, VIA P1 PIN-9
38.4MHZ OUT
10N
PRINTED
C352A SOLDERED TO Q306 COLLECTOR
+8V-TX DELAYED
5V7
6V7
6V2
2V3
0.15V
4V6
1V9
4V9
0V
4V3
0V6
6V2
5V35
7V75
7V1
6V9
4V0
2V03
1V27
1V25
1V7
4V0