MTH500 Detailed Service Manual - MTH500 Receiver Block (Sheet 2 of 2)
68P02963C70-O
6 - 17
MTH500 Receiver Block (Sheet 2 of 2)
470.K
TP504
10.n
N/U
N/U
5
6
79B02964C09-O
SHEET 4 OF 9
4
GPO6/DCLICIN
Tetra RX Mixer + 2nd LO Enable
3
2
1
RX IF Shield
Warp from WPIC
WPIC Shield
N/U
N/U
N/U
C516
100.n
7
8
6
5
C530
10.n
10.n
C534
VAGBYP
E3
VBLIN
L5
VCNTO
J6
VCOCT1
K1
VCOCT2
J2
XTALBASE
K6
XTALEMIT
L6
J8
XTALWARP
D9
TESTD_GP04
TM
E11
A11
TSLOT
TSLOTB
A10
K11
TXCLK_SCK
TXE_TXKEY
H8
TXKEYOUT
F2
VAG
E1
SRD
J11
STD
K10
TCAPM
C7
TCAPP
B8
TCLK
B11
TCLKB
C10
TEST1
D4
TEST2
D3
SERIALGND
L8
SERIALVCC
H11
K4
SFBYP
SFGND
K3
L4
SFOUT
SFVCC
J4
SPICLK
K9
SPII
L9
REFPLLVCC
G10
REFVCC
B10
RFA0
B1
RSTB
E10
H9
RXACQ
RXCLK
J10
RXFS
L11
SATDET
H1
PREINGB
A3
PREINI
B4
PREINIB
A4
PRSCIN
G1
QGND
C11
QVCC
D10
REFGND
B9
REFPLLGND
H10
PLLCP
F11
PLLCPVCC
F9
PLLEMIT
G9
PRAGND
A2
PRAGNDDIG
A1
C3
PRAVCC1
PRAVCC2
B5
PREING
B3
OUTIB
A9
A8
OUTQ
OUTQB
C8
D6
PKGGND1
F4
PKGGND2
PKGGND3
F8
PKGGND4
H6
G11
PLLBASE
MNCPGND
K2
MNCPVCC
H4
NGND
D11
E9
NVCC
OSCENB
J9
OSCGND
K5
OSCVCC
J7
OUTI
D8
J1
GPO1
GPO2
H2
GPO3
B7
LOGICGND
L7
LOGICVCC
K7
D1
LOIN
G2
MAINGND
MAINVCC
H3
C6
DCLQCIN
A6
DCLQCP
DETSW
J3
DMCS
L10
DMXGND
B2
DMXGNDDIG
C2
DMXVCC
C1
D2
DMXVCCDIG
K8
CEX
CLKOUT
F10
C9
CLKSEL
L3
CPGITR
L2
CPGT
CREF
A7
DCLICIN
C5
DCLICP
B6
ADAPT
L1
AGC
F3
AGCDRIVE
G3
AGCGND
E2
AGCVCC
F1
ASW
J5
BBFGND
A5
BBFVCC
C4
9
9
U503
WPIC27C02
1
2
10uF
C561
100.n
C555
5
4
3
2
6
7
2.775V_WPIC
2.775V_WPIC
2.775V_WPIC
2.775V_WPIC
2.775V_WPIC
2.775V_WPIC
L519
220.n
L520
220.n
10.p
C527
C560
C526
10.p
10uF
3.3n
C542
100.n
C547
C502
100.n
100.n
C508
100.n
C549
C535
100.n
C572
100.n
100.n
C501
C504
100.n
C515
100.n
100.K
R521
TP502
C580
1.n
V_CONT
1
100.K
R520
Y501
TCXO_16.8MHZ
GND
2
OUTPUT
3
VCC
4
TP500
TP501
FREQ
51
R518
C545
5.1p
3
4
C519
100.n
5
4
3
2
7
8
2.775V_WPIC
2.775V_WPIC
2.775V_WPIC
2.775V_WPIC
2.775V_WPIC
2.775V_WPIC
8
6
R968
22
R967
C1049
270.p
R966
39
R956
0.
1
SH502
SHIELD
1.n
C552
33.
R504
100.n
C573
C554
47.n
C518
100.n
3
2
1
7
6
5
4
C533
C577
10u
VREF1_2.775V
10n
C503
R515
100K
R514
5.1K
R512
100K
1
2.775V_WPIC
5V_RF+
V3
TP503
SH500
SHIELD
C557
15n
C546
1.5p
C536
22p
470.n
L501
TCXO_WARP
8
SF_OUT
Ded_Synt_Ref
RX_ACQ
WPIC2(1:9)
SRD
SSI_FSYNCH
TETRA_2nd_LO_Enable
OSC_EN
WPIC_RESET
WPIC_CE
SPI_CLK
SPI_IN
STD
TXCLK
TXE
ASW
TCLKB
VCNTO
OUTIB
OUTI
WPIC1(1:8)
TSLOTB
TSLOT
TCLK
OUTQB
OUTQ
RX_2nd_LO
CLK_OUT
Summary of Contents for MTH500
Page 10: ...Contents x 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 14: ...Foreword xiv 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 18: ...Overview 1 4 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 50: ...Theory of Operation 2 32 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 76: ...Troubleshooting 3 26 68P02963C70 O Offset VCO Test ...
Page 78: ...Troubleshooting 3 28 68P02963C70 O This page left blank intentionally ...
Page 82: ...Programming the Radio 4 4 68P02963C70 O This page left blank intentionally ...
Page 100: ...Maintenance 5 18 68P02963C70 O Figure 23 Exploded View 1 2 3 4 5 7 6 X6 8 ...
Page 101: ...Maintenance 68P02963C70 O 5 19 Figure 24 Exploded View of Chassis Assembly 9 12 13 10 11 14 ...
Page 102: ...Maintenance 5 20 68P02963C70 O ...
Page 134: ...SCHEMATIC DIAGRAMS MTH500 Flex CD 6 32 68P02963C70 O This page left blank intentionally ...
Page 140: ...Replacement Parts and Kits 6 68P02963C70 O ...
Page 141: ...Replacement Parts and Kits 68P02963C70 O 7 ...
Page 142: ...Replacement Parts and Kits 8 68P02963C70 O ...
Page 144: ...Test Equipment Service Aids Tools A2 2 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...