Figure 8-49. Nle 4273A Uhf Range 2 Tranceiver (Rf) Board Overall Circuit Schematic - Motorola ASTRO XTS 5000 Detailed Service Manual

Schematics, Board Overlays, and Parts Lists: Transceiver (RF) Boards
C22
10uF
W2 W13 W1
BATT J1-1
BSTAT J1-2
BAT_RTN J1-3
W3 W14
W4
W15 W16
FUB+ P1-1
FUB+ P1-2
W5
BSTAT P1-21
SWB+ P1-8
VSW1 P1-15
TXINH P1-19
ADCS P1-25
RSTL P1-26
LOCK P1-3
MISO P1-17
MOSI P1-23
SPCK P1-16
USEL P1-24
EECS P1-18
TXTD P1-4
TXCK P1-10
TXFS P1-9
F168 P1-7
ABCS P1-13
RXCK P1-5
RXFS P1-6
RXDO P1-12
GND P1-11
V3B
GND P1-14
GND P1-20
GND P1-22
R6
10K
PLATED_HOLE P1-27
SPCK
EECS
RSTL
TH1
TOOLHOLE
MOSI

Figure 8-49. NLE 4273A UHF Range 2 Tranceiver (RF) Board Overall Circuit Schematic

6881094C31-D
C23 C24
10uF 10uF
TP39 TP37 TP38
TP1 TP8 TP2 TP3 TP5 TP7 TP4 TP6
BATT RAWB+
BS FB+
XB+
DC
V5A
SB+ V3D
VSW1 V3A
V3B ERR
V3B
W17 W18 W19 W20 W23 W11 W12
V3B V3A
W6 W7 W8 W9 W10 W21 W22
C28
1000pF
TX5V
LOCK
MOSI
SPCK
USEL
TXTD
TXCK
TXFS
V5A V3D
V3B V3B
C15
R7
0.1uF
10K
MOSI
SPCK
6
CLK_S
ABCS
1
EN_CS R8
3 2
WP SO
7
100
HOLD
RXCK
5 RXFS
SI
RXDO
U4
X25160
EEPROM
SH201 SH202 SH301
16.8 MHz Osc LV-FracN VCO BIC & TANK
SHIELD SHIELD SHIELD
1 1 1
SH701 SH502 SH450
Harmonic Filter 2nd LO VCO Mixer
SHIELD SHIELD SHIELD
1 1 1
V3B V3A V3D V5A XB+ RAWB+ RAWB+ XB+ V5A V3B
RAWB+
TXB+
V5A
V3B
TXINH
MODRF
TXINH
RSTL
RSTL
MISO
MISO
MOSI
MOSI
SPCK
SPCK
USEL
USEL
ADCS
ADCS
V5A
V5A
V3A
V3B
SCEN TXRF_OUT
LOCK
DATA
CLK
M
CSX
M + 1
RXLO_OUT
SSI_DATA
FGU
SSI_CLK
A200 (+300)
SSI_FS F168
V3A
V5A FREF
V3D
V3A
PD
PC
PE
CKO LO
CLKOUT
RXIF
ADC
FS IF_OUT
DOUTA
RX_BE
A500
SH302 *SH451* *SH401*
VCO MATCH XTAL FILTER PRESEL1
SHIELD SHIELD SHIELD
1 1
SH501 *SH101* SH402
Abaucs III Power Amp LNA PRESEL2
SHIELD SHIELD SHIELD
1 1 1
TX_ALC
A100
TX5V
PAOUT
DAC3
DAC2
TP11
C16
TX5V
3pF
V5A
SW_FL
DAC3
A700
V5A
TXRF
ANT
RXRF
V5A
V5A
LO_IN
D2A2
RX_FE
A400
RX_IN
MAEPF-27964-O
8-79
W02
1
TP02
1
TP02g
J2
Antenna
Launch
G1
G2
G5
G6
G7
G9
G10
G12
July 21, 2004