68
U102
D/A IC
P.A.
U105
85Y10
COUPLER
U104
U1
RF AMPLIFIER
U101
TX ALC IC
6.7Vdc (RX)
0.5Vdc
-22dBm (RX)
*
0Vdc (TX)
0.1Vdc (TX)
NC
NC
5Vdc (TX)
0Vdc (RX)
1Vdc
0.4Vdc (RX)
(NOTE 4)
-31dBm
4Vdc
NC
2.2Vdc (TX)
7.4Vdc (RX)
-34dBm
ANTENNA
EXT. ANT.
CONNECTOR
7.5Vdc (RX)
6.8Vdc (TX)
TO UNIVERSAL
7. * = NOT PLACED
3.2Vdc, 450MHz
2.4Vdc
0.6Vdc
3.50Vdc
3.16Vdc
1.14Vdc
512MHz
450MHz
-32dBm
7.4Vdc (RX)
6.5Vdc (TX)
5.8Vdc (TX)
NC
4.9Vdc (RX)
2
1
NC
BUFFER
MIXER
NC
RF
5V REG
NC
5Vdc
NC
0.1Vdc (TX)
0Vdc (RX)
4.9Vdc (TX)
0Vdc (RX)
5Vdc (TX)
0Vdc (RX)
2.45Vdc (TX)
0Vdc (RX)
5Vdc (TX)
-50dBm
(NOTE 4)
3.6Vdc, 520MHz
3.5Vdc, 512MHz
-18dBm
-46dBm
1.5Vdc (TX)
P401
4.9Vdc (RX)
3.3Vdc (TX)
*
*
*
*
*
*
*
*
*
*
*
*
*
*
OF THE RF MILLIVOLTMETER & A RF LEVEL OF -20 DBM INTO J401.
2. RX RF VOLTAGES IN DBM ARE MEASURED WITH 1.5PF IN SERIES WITH 50 OHM ADAPTER
1. UNLESS OTHERWISE STATED RX DC VOLTAGES ARE MEASURED WITHOUT RF INTO J401.
NOTES:
0Vdc (TX)
4.9Vdc (RX)
0Vdc (RX)
3.9Vdc (TX)
VR (RX)
520MHz
0Vdc, 520MHz
0.55Vdc 450MHz
FREQ
-28dBm
6. MEASUREMENTS MADE BELOW CROSSOVER FREQUENCY.
5. MEASUREMENTS MADE ABOVE CROSSOVER FREQUENCY.
P402
NC
E104
4. THESE LEVELS MEASURED BY REMOVING R52.
3. VOLTAGES IN mV ARE MEASURED WITH A X10 SCOPE PROBE.
0Vdc (RX)
6.5Vdc (TX)
0Vdc (RX)
2.8Vdc (TX)
*
*
100pF
C15
.01uF
C31
R26
R36
C120
C110
2
GND
IN
3
OUT
1
4.3pF
U103
C99
C3
13pF
10K
16pF
C94
NC
R114
B+
5V_REG
5V_REG
5V_REG
NC
NC
6.8pF
DAC
D
C89
19.61nH
100pF
C88
C119
L13
C117
100pF
100pF
C109
B_POS
3
RFIN
1
RFOUT
4
VCNTRL
2
Q101
GND2
B5
NC
D4
REF_DA
B3
RESET
RX_DA
C5
D5
R_T
D2
SC1
C1
SC2
C2
SC3
B1
SC4
C3
SEL
E3
SW1
D1
SW2
E2
SW_C
C4
TX_DA
5
RF_OUT
2
B+
SB+
5V
A3
B2
CLK
A2
DATA
B4
EN_ANT
A4
EN_BIAS
D3
GND1
E4
C118
1
10
3
4
6
7 8
9
RF_IN
C84
.01uF
0.1uF
C148
4.3pF
C116
2
3
4
8
GND
5
GND1
6
GND2
7
9
GND3
S101
SWITCH
1
C6
5.6pF
7.5pF
C5
C19
9.1pF
C4
B+
DAC
6.8pF
TP10
1
SB+
C107
3
4
R130
Q104
1
2
5
C106
4.7uF
L37
12nH
10pF
C91
C92
4.3pF
C93
L14
5.1pF
L15
11.03nH
15pF
11.03nH
2
3
5
4
C90
5
3
4
T2
1
Q105
1
2
10uF
C103
GND3
2
IN
7
OUT
6
Vcc
R139
100K
D
CLK
CLK
4
ABP
5
AG2
1
GND1
3
GND2
8
L31
4.22nH
CR7
100pF
CR6
270nH
C121
C10
L101
56pF
L6
47nH
C9
10pF
B+
180K
R115
R129
4.7K
R106
3.3K
0.1uF
C123
33K
R113
.033uF
0.1uF
C157
C115
100pF
C154
R23
10K
L12
27.42nH
15pF
L11
11.03nH
C7
15pF
C150
20pF
C149
C18
10pF
L10
18nH
100pF
C113
100pF
C111
RT101
50K
C127
R107
C139
150nH
L108
L107
150nH
100pF
100pF
C138
100pF
C114
C137
G2
0
R199
L32
11.03nH
6.2pF
C1
5.1pF
11.03nH
C2
L128
11.03nH
L126
L127
11.03nH
C135
100pF
100pF
C147
R22
10K
220nH
C126
L7
C128
3.3uF
L35
1uF
CR9
4.22nH
CR8
51
30
R126
C156
1uF
R127
C11
L123
220nH
100pF
.01uF
4.22nH
C72
270nH
L30
100pF
C145
L122
R52
100pF
C155
R116
100
4.7K
130K
3pF
R102
G1
C151
R119
1MEG
C141
100pF
C87
100pF
C140
4700pF
L121
270nH
57R01
E101
L105
270nH
C82
.01uF
T1
1
2
3
5
4
C85
10uF
100pF
C83
C98
20pF
R7
Q110
100
Q107
1
2
5
3
4
5
2
1
4
RF1
8
RF2
7
Q108
3
GND1
5
GND2
6
GND3
9
GND4
10
GND5
13
IFN
11
12
IFP
LOIN
14
U2
BBP
2
BDIV
4
3
BVDD
GND
1
39nH
L9
470nH
L8
C86
100pF
C108
L103
L102
C102
L34
4.22nH
C133
1.8pF
5.6K
C132
8.2pF
R111
2.2K
R110
47K
R128
3
2
CR11
1
3
2
CR103
1
CR101
CR109
R27
10
CR108
GND
J401
C13
22uF
100pF
C105
.022uF
C101
100pF
C104
100pF
C153
BPOS
D3
CATH_1
B2
DA_REF
C5
GND
B3
ICATH_2
E2
INT_CAP_IN
A4
INT_CAP_OUT
C3
PA_BIAS
E3
PA_CNTL
B5
PA_OUT
B4
E4
RECV_5V
RE_DET
A3
RX_1
D2
TEMP_SENSE
D5
TX12
D1
470nH
C4
5V_TX
ANODE_1
A2
ANODE_2
C2
ANT_SW_BS
B1
BIAS_EN
D4
BIAS_RT
C1
30pF
L16
C17
0.1uF
C16
C12
TX_LO
100pF
AGC
IF
RX_LO
DAC
CLK
DATA
SB+
B+
5V_REG
LCK
63B81097C03-O
Sheet 1 of 2
TO UNIVERSAL
CONNECTOR
EXTERNAL
ANTENNA
NUE7265B, NUE7266B, NUE/PMUE7272B, AND NUE7274B UHF (403-470MHz)
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 1 of 2)
Summary of Contents for SYMBOL MT2000 Series
Page 1: ...HT 1000 JT 1000 MT 2000 MTS 2000 and MTX Series Handie Talkie Portable Radios Service Manual ...
Page 2: ......
Page 24: ...2 Notes ...
Page 78: ...56 Notes ...
Page 147: ...Appendix A 9 Appendix Figure 2 Secure Module Location Detail ...
Page 169: ......