Motorola Astro Digital Mobile Radio Xtl5000 Detailled 6881096c74 B Manual

Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main Board 7-216881096C74-B May 25, 2005
Figure 7-19. HUD4022A/HUD4025B Frequency Generation Unit Overall Schematic (Sheet 1 of 2)
Rx Buffer
Rx VCO & 1st Buffer
Tx VCO & 1st Buffer Tx Buffers
Tx & Rx Buffers Shields
NPMillennium FGU
Tx & Rx VCOs Shields
NP
NP
NP
RX  3rd Buffer
TO SHEET 2
73D02970C73-O
SHEET 12 OF 23
1.KR3881
1.K R3880
SHIELD
SH3759
1
R3861
820. 820.
R3860 6.2
R3862 C3803
470.p
C3883 100.n
C3882
100.n...

7-22Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main BoardMay 25, 2005 6881096C74-BFigure 7-20. HUD4022A/HUD4025B Frequency Generation Unit Overall Schematic (Sheet 2 of 2)
3.0 Volt Regulator
D ATA CLOCK
Syn_Sel NP
TO SHEET 1
NC
B(,1),A(,1)
FS_2
DOUTA_2
CLKOUT_2 PE_2
PD_2
PC_2 FS_3
DOUTA_3
CLKOUT_3
PE_3
PD_3
PC_3
9.3V_2 B(,1),A(,1)
C3813
51.R3836
100.n
470.p
1
C3825
1
TEST_POINT TP6754TP6752
TEST_POINT
1
TP6753
TEST_POINT 1
TP6751
TEST_POINT
1
1
TP6750
TEST_POINT...

Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main Board 7-236881096C74-B May 25, 2005
Figure 7-21. HUD4022A/HUD4025B VHF Transmitter VCO Schematic
LOW VCO
HIGH VCO
NP
Millennium VHF TX VCO
NP
NP
73D02970C73-O
SHEET 20 OF 23
C3853
L3764
1uH C3841
B(,1),A(,1)
B(,1),A(,1)
B(,1),A(,1) B(,1),A(,1)
B(,1),A(,1)
TX_RF_OUT
B(,1),A(,1)
Control_V_Tx B(,1),A(,1)
B(,1),A(,1)
High_VCO_SW
B(,1),A(,1) TX_Buffer_EN
B(,1),A(,1)
B(,1),A(,1)
B(,1),A(,1)B(,1),A(,1)
B(,1),A(,1)...

7-24Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main BoardMay 25, 2005 6881096C74-BFigure 7-22. HUD4022A/HUD4025B Frequency Generation Unit VHF Receive Injection Schematic
NP
NP NP NP
APCO VHF RX Buffer
NPNP 73D02970C73-O
SHEET 21 OF 23
B(,1),A(,0)
B(,1),A(,1) B(,1),A(,1)
B(,1),A(,0)
0
LO_INJ_HS
0
TO_CAPACITOR
LINE_B+
B(,1),A(,1)
RF_IN B(,1),A(,1)
B(,1),A(,1)
B(,1),A(,1)
B(,1),A(,1)
B(,1),A(,1) B(,1),A(,1)
470.p
C3930
100n
100.
R3872
C3910
Q3762
B(,1),A(,1)...

Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main Board 7-256881096C74-B May 25, 2005
Figure 7-23. HUD4022A/HUD4025B Frequency Generation Unit VHF Transmit Injection Schematic
APCO VHF TX Buffers
NP
73D02970C73-O
SHEET 18 OF 23
620.
16.p
R3882
C3790C3917
470.p
C3921
3.p
3.p
7.5p
C3919 10.p
C3920
C3918
L3785
47.n L3787
27.n
R3863
R3858 30.
R3859
180. 180.
C3876 R3764
10.n
C3871 10.n 2.K
2.K
R3757
1
TP6767
TP6768
1
TEST_POINT TP6769
TEST_POINT
R3835
0. 1
R3842
C3872...

7-26Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main BoardMay 25, 2005 6881096C74-BFigure 7-24. HUD4022A/HUD4025B Receiver Back-End Schematic
CLOCK LF2nd LO VCO
2nd LO LF
CLOCK VCOSPF_3.5V
RX 2nd LO Shield 
# #
# #
# #
#
# *
*
NP
NP
NP
NP
NPDNP
73D02970C73-O
SHEET 13 OF 23
5V_TO_FGU
5V_TO_IF
5V_FROM_CONTR CLKOUT_1 FS_1
PE_1
PD_1
PC_1 DOUTA_1
B(,1),A(,1)
U3000
AD9874
0R3023
C3032
39.000p
0
R3022
FS 11
DOUT1
PE
1
CLKOUT PD
1
PC1
C3046
4.7n R3020
51. 20.p C3028100.0n...

Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main Board 7-276881096C74-B May 25, 2005
Figure 7-25. HUD4022A/HUD4025B Receiver Front-End Schematic (Sheet 1 of 2)
MIXER
Millennium VHF Rx FE
2nd Preselector (Elliptic Filter)
NP NP
NP
MIXER_IF_OUT
73D02970C73-OSHEET 16 OF 23
TO SHEET 2
C3283
1.n
C34214.3p
330nL3404
C3258
L3255
22n 100.000p
51.
R3270
B(,1),A(,1)
D3258
IO1
IO2
IO3
IO4
4 6 3 B(,1),A(,1)
1 B(,1),A(,1)
2
3
B(,1),A(,1)
1 B(,1),A(,1)
2
B(,1),A(,1)
T3302 XFMR...

7-28Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main BoardMay 25, 2005 6881096C74-BFigure 7-26. HUD4022A/HUD4025B Receiver Front-End Schematic (Sheet 2 of 2)
5V9.3V
AGC/Attenuator circuit
NP NP
TO SHEET 1
1.n
5V
5V
5V C3936
D3256
C3289 100.n
C3288
470.p 10.K
R3265
10.K R3266 D3254 D3253
IF6786 D3252
C3267
100.n
9.3V_FE
9.3V_FE
100.n C3312
1.n
C3284 13.p
C3259
B(,1),A(,1)62.00p
C3300
72.22n L3273
72.22n L3272
B(,1),A(,1) C3299
B(,1),A(,1)
B(,1),A(,1)
62.00p
C3257...

Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main Board 7-296881096C74-B May 25, 2005
Figure 7-27. HUD4022A/HUD4025B Receiver IF Schematic
IF_TO_ABACUS
Millennium VHF Rx IF
NP
NP
NP73D02970C73-O SHEET 15 OF 23
B(,1),A(,1)
B(,1),A(,1)
IF_IN 9.3V_FROM_FE
5V_TO_FE
IF_OUT
9.3V_TO_CONTR
5V_IF
RF_ATTN_3_C
RF_ATTN_2_C
RF_ATTN_3_B RF_ATTN_2_B
B(,1),A(,1)
B(,1),A(,1) B(,1),A(,1)
B(,1),A(,1)B(,1),A(,1) B(,1),A(,1)
B(,1),A(,1)
B(,1),A(,1) B(,1),A(,1)
68.000nL3408
10.n
C3424...

7-30Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main BoardMay 25, 2005 6881096C74-BFigure 7-28. HUD4022A RF Power Amplifier (RF PA) Schematic (Sheet 1 of 2)
INTERFACE
RFPA/FGU
INTERFACE
RFPA/POWER CONTROL INTERFACE
1 %
RFPA/OUTPUT NETWORK
73D02970C73-OSHEET 14 OF 23
TX_INJ
VREVERSE_ON
K9.1V
A+_4 VFORWARD_ON
A+_3 RFPA_OUT
K9.1V_ON
RFPA_CNTRL
VFORWARDVREVERSE
VCURRENT VGBIAS3
A+_1
VTEMP
VGBIAS2
A+_2 IF3543 IF3542 IF3541
IF3503 IF3500
K9.1V_FGU IF3501
VGBIAS1 C3550
5m...