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
T2000-400 MOBILE RADIO
2K4B3L1A
220-01204-11
18-10-96
A
T2000 YH
TX:0V7
TX:13V3
TX:0V7
RX:0V
0V.AT-REST
+5DBM/50.OHM
+6DBM/50.OHM
8A UPDATE TO EXTEND BAND.’ MC K.B. D.E. M.B. 04/02/94
4A ADDED CYCLIC-KEY, R437, R194, C360 & C354 J.F. J.F. 28/7/92
5A J.F. J.F. M.L. 11/8/92
6A J.F. J.F. M.L. 24/9/92
7A ADDED R420A & R421A, CHANGED C356 TO 10NS J.F. J.F. M.L. 25/11/92
7B UPDATED SHEET-2 BORDER; NO OTHER CHANGES J.F. J.F. M.L. 16/12/92
9A AMMENDMENTS TO VCO AND RECEIVER. MC
RX-FREQ
175MHZ
225MHZ’
230.5MHZ
RX
3V3
8V0
8V5
TX:3V4
TX
7V8
13V8
N/A
TYP:4V0.@-70DBM.INPUT
RX-FREQ
175MHZ
225MHZ’
230.5MHZ
+9DBM/50.OHM
TYP:0V15.@-70DBM.INPUT’
1V5-3V0.RF-OFF
TX:0V7
+6DBM/50.OHM
9B ADDED R700A-B-C FOR PRINTED INDUCTOR YH 26/5/95
TX:+4V3
RX:+3V3
CONTROL-VOLTS
2V8
15V4
16V7
DIVIDE-BY.64/65
147.3MHZ-225MHZ
TYP:650MV.P-P.@-70DBM.INPUT
10A ADDED 3 RESISTERS BY Q305 PRINTED YH
11A ADDED 1N0 CAPCITORS FOR EMC,AND DELAYED CIRCUIT YH 30/10/95
1V0.P-P
60%-MOD
TX:8V0
TX:12V0
#C152A
10N
#C153A
100P
#C156
22P
BAT18
#D140A
2
3
#Q108
BFS17
#R140
68K
#R140A
33K
#R142
27K
#R142A
100K
#R143A
33K
#R144
68K
#R144A
120K
#R145A
33K
#R149
100K
#R155
0
C1
1N0
C100
10N
C102
100P
C103
15P
C104
100N
C105
1P8
C106
150P
C107
3P9
C108
10N
C109
1P5
C110
1N0
C111
4P7
C112
1P0
C113
1P5
C114
1N0
C115
5P6
C116
1N0
C117
1P0
C118
1P5
C119
1N0
C120
680P
C121
4P7
C122
3P9
C123
680P
C124
8P2
C125
6P8
C126
10P
C127
22P
C128
33P
C129
10N
C130
10N
C131
33P
C133
270P
C134
10P
C135
150P
C136
27P
C137
680P
C138
27P
C140
10P
C141
270P
C145
100P
C147
10N
C148
18P
C149
1N0
C150
100P
C151
100N
C152
100P
C153
4U7
C154
10N
C155
100P
C157
100N
C158
1N0
C159
270P
C160
100P
C174
47U
C175
100N
C176
100N
C180
100N
C181
100N
C185
10N
C186
10N
C187
1N0
C188
100P
C189
470P
C190
470P
C191
1N0
C192
33P
C193
4U7
C194
680P
C195
680P
C197
100N
C198
1P0
C199
1N0
C2
1N0
C200
10N
C201
0805
C205
1N0
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
47U
C220
15N
C221
1U0
C222
100N
C223
680P
C224
680P
C225
680P
C226
1P0
C227
680P
C228
100P
C229
47U
C230
4N7
C231
680P
C232
12P
C233
4U7
C234
4U7
C235
10N
C236
2P7
C237
1N0
C238
10N
C239
680P
C240
680P
C241
680P
C243
680P
C244
6P8
C245
8P2
C246
680P
C247
4P7
C248
10N
C257
18P
C288
39P
C3
1N0
C300
4U7
C301
680P
C302
2P7
C303
100N
C304
680P
C305
27P
C306
39P
C307
100N
C308
680P
C309
27P
C310
680P
C311
47P
C312
18P
C313
39P
C314
100P
C315
680P
C316
680P
C317
680P
C318
680P
C319
680P
C320
82P
C321
100N
C322
68P
C323
82P
C324
180P
C325
180P
C326
680P
C327
100N
C328
10N
C329
22P
C330
68P
C331
68P
C332
18P
C333
47P
C335
8P2
C336
680P
C337
680P
C338
100P
C339
22P
C340
39P
C341
39P
C342
270P
C343
12P
C344
12P
C345
680P
C346
8P2
C347
5P6
C348
1N0
C349
1N0
C351
10P
C352
100N
C353
1N0
C360
1N0
C362
1N0
C363
100N
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
10N
C427
4U7
C428
4U7
C429
1N0
C430
56U
C451
1N0
C455
1N0
D1
MR2520
D101
BB639
1
2
D102
BB639
1
2
D103
BB639
1
2
BAT18
D105
2
3
BAT18
D106
2
3
BAT17DS
D107
2
3
BAT17DS
D107
3
1
BAT17DS
D108
31
BAT17DS
D108
2
3
BAT17DS
D110
3
1
BAT17DS
D110
2
3
BAT17DS
D111
2
3
BAT17DS
D111
3
1
BAV70
D202
2
3
D203
BB639
1
2
D204
BB639
1
2
D205
BB639
1
2
D206
BB639
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
2.5T/5.0
L104
#666
L105
#666
L106
#666
L107
RF BALUN
3
2
1
4
6
L108
RF BALUN
3
2
1
4
6
L109
2.5T/4.0
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
L121
M21A
L200
M21B
L202
100NH
L203
#662
L204
820NH
L205
820NH
L206
#1008
L207
820NH
L208
5.5T/3.0
L210
5.5T/3.0
L300
#4S3B
L301
2.5T/3.0
L302
2.5T/4.0
L303
1U5
L304
1.5T/3.0
L305
2.5T/4.0
L306
M21B
L307
1.5T/4.0
L308
4S3
L309
#4S3B
L310
1.5T/4.0
L311
1.5T/4.0
L312
330NH
L313
2.5T/4.0
L314
4S3
L315
3B BEAD
L316
1.5T/4.5
L317
4S3
L318
8.5T/3.0
L319
1U5
L320
3.5T/5.0
L321
330NH
L322
1.5T/5.5
L323
1.5T/4.0
L324
1.5T/4.0
L325
1.5T/5.5
L331
M21B
L401
#650
2
36
1
4
D
S
G
Q100
BFR31
Q101
951
Q102
BC857
Q103
951
Q105
951
Q106
BC848
Q107
BFS17
Q109
BF824
Q110
BFS17
Q115
BC848
Q200
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
Q212
MMBR571
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
SRFH1001
Q309
BC848
Q310
BC807
Q311
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
0
R111
150K
R112
47
R113
4R7
R114
820
R115
12K
R116
4R7
R117
10
R118
100
R119
10
R120
820
R121
180
R131
100
R132
2K2
R133
270
R135
10K
R138
100K
R141
1K5
R143
33K
R145
1K5
R146
22
R147
220
R148
560
R150
100K
R151
3K3
R152
390K
R153
1K0
R154
10K
R155
100K
R156
100
R157
10K
R158
1K0
R159
47
R160
10
R161
1K0
R194
0
R195
68K
R196
100
R197
100
R198
2K2
R199
100
R200
1K2
R201
1K2
R202
220
R203
680
R213
1K2
R214
680
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
220
R247
47
R248
0
R249
120
R250
2K2
R251
150
R252
1K8
R253
820
R254
22
R255
10
R256
1K5
R257
1K2
R258
10R259
560
R260
18
R261
10
R262
2K2
R263
47
R264
3K3
R265
3K9
R269
4R7
R270
4R7
R271
220
R272
220
R273
4R7
R274
3K9
R275
4R7
R278
100K
R282
120
R284
10K
R285
100K
R286
82K
R287
150K
R288
330K
R300
1K0
R301
330
R302
1K0
R303
1K5
R304
47
R305
10
R306
10
R307
680
R308
470
R309
22
R310
470
R311
820
R312
680
R313
22
R314
10
R315
47
R316
10
R317
10
R318
10
R318A
10
R319
330
R320
15K
R322
22
R323
180
R324
68
R326
220K
R327
1K0
R328
150
R329
47K
R330
220K
R332
100
R333
2K2
R337
0
R340
220K
R341
220
R342
270K
R343
56K
R344
10K
R345
220
R346
680
R347
1K8
R418
680
R420
56K
R420A
4K7
R421
56K
R421A
4K7
R422
22
R425
1K0
R426
4R7
R427
4R7
R428
22
R429
27K
R430
6K8
R431
100K
R432
10
R433
100
R434
47
R437
1K0
R700A
0
S4
I/OPAD
TP2
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
C354
N.F.
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
1
P1
GND
4
P1
GND
16
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-O/P
4
P3
EXTERNAL
1
P3
GND
3
P3
GND
5
P3
IGN
7
P3
SPKR-GND
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
MIXER
4
P5
NSE-DET
5
P5
QUAD-COIL
1
P5
455-OUT
9
P6
+8V-SYNTH
4
P6
+8V-SYNTH
10
P6
TCXO
1
P6
AF-SIG
9
P6
GND
2
P6
GND
3
P6
LF-SIG
7
P6
MOD
6
P6
REF-MOD
5
P6
TX-AF
8
P7
INT-SPKR
2
P7
SPKR-GND
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
+8-VOLTS
+8V
+8V
+8V
+8V
+8V-OUT
+8V-OUT
+8V-SYNTH
+8V-SYNTH
+8V-SYNTH
+8V-SYNTH
REF-MOD ADJ
SYNTHESISER
LOOP FILTER
RX-TUNE VOLTAGE
DELAY LINE
+8V-TX
+8V-TX
+8V-TX
+30V
8
4
D200
BAV99
D200A
D200B
1
2
3
3
C206
R217
LO-IN
PRTD
PRINTED
PRINTED
PRTD
PIN SWITCH
PDL16M
P1 TO CONTROL PCB
8
7
AUDIO PA
FROM CNTRL PCB
+13.8V-ECONOMY
TCXO & TX-AUDIO PCB
IF PCB
(DWG NO-C731, IPN:220-01201-00)
(DWG NO-C731, IPN:220-01201-00)
INTERNAL SPKR
PL2U
SK7HMCH
VIA P2-PIN 5
3
2
16
1
C179
TO LOOP-FILTER
IC202, PIN-8
TO LOOM CONNECTOR P2 PIN-6
& RF POWER-AMP
38.4MHZ
PDL12M
P2 TO CNTRL PCB
38.4MHZ OUT
1ST MIXER
TO CNTRL-PCB VIA P2 PIN-9
TO LOOM CONNECTOR P2
PIN-7
PRINTED
POWERCONTROL
PRINTED
PRINTED
COUPLER
100N
47
10N
PRESCALER
UNDER-WALL DECOUPLING
4S3
4S3
*
*
FROM +8V REGULATOR ON
CNTRL-PCB, VIA P1-PIN 9
*
L300, L309: DUAL 4S3-BEAD
COMPONENTS MARKED # NOT STANDARD PARTS
(SEE TABLE ON SHEET 2 FOR TEMPORARY VARIANTS)
NOISE BLANKER
X3 MULTIPLIER
CONTROL VOLTS
+8V-TX-DELAY
5V7
6V7
6V2
2V3
4V6
4V9
1V9
0V
7V75
5V35
0V64V3
6V2
3V0
4V0
2V03
1V27
1V25