MOTOROLA, the Stylized M logo, Handie-Talkie, Private-Line, Digital Private-Line, FLASHport,
HearClear , HT 100 0, JT 1000 , MT 200 0, MTS 2000, M TX 2000, MTX 838, MT X 8000, and MTX 9000 a re
registered in the US Patent & Trademark Office. All other product or service names are the property of
their respective owners.
The information contained in this manual relates to all HT 1000™, JT1000®, MT 2000™, MTS 2000™, and MTX Series
Handie-Talkie
service shop technicians to troubleshoot and repair the portable radio to the component level.
For details on the operation of th e ra dio or lev el 1 or 2 m ain tenance procedures, re fer to t he applicable manuals, which are
available separately. A list of related publications is provided in the section, “Related Publications Available Separately” on
page vii.
®
portable radios, unless otherwise specified. This manual provides sufficient information to enable qualified
Product Safety and RF Exposure Compliance
Before using this product, read the operating instructions
!
C a u t i o n
for safe usage contained in the Product Safety and RF
Exposure booklet enclosed with your radio.
ATTENTION!
This radio is restricted to occupational use only to satisfy FCC RF energy exposure requirement s.
Before using this product, read the RF energy a wareness informat ion and operating ins tructions in the
Product Safety and RF Exposure booklet enclosed with your radio (Motorola Publication part number
6881095C98) to ensure compliance with RF energy exposure limits.
For a list of Motorola-approved antennas, batteries, and other accessories, visit the following web site
which lists approved accessories: <http://www.motorola.com/cgiss/index.shtml>
Manual Revisions
Changes which occur af te r t his man ual is pri nte d are described in FMRs (Florida Manual Revisions). The se FMRs provi de
complete replacemen t page s for all adde d, chang ed, and dele ted items, in cludi ng pertine nt par ts lis t dat a, sc hematics , and
component layout diagrams. To obtain FMRs, contact the Radio Parts Services Division (refer to “Replacement Parts
Ordering” on page 115).
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored in
semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain
exclusive rights for copyrighte d compu ter program s, incl uding, but not limit ed to, the exc lusive rig ht to copy or repro duce in
any form the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the
Motorola products described i n t his m an ual m ay no t b e co pied, reproduced, mod ifi ed, rev ers e-e ngi nee red, or distributed in
any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not
be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or
patent applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in the
sale of a product.
Document Copyrights
No duplication or distrib ution of this document or any portion thereo f shall ta ke place witho ut the expres s written permis sion
of Motorola. No part of this manual may be reproduced, distributed, or transmitted in any form or by any means, electronic
or mechanical, for any purpose without the express written permission of Motorola.
Disclaimer
The information in thi s d ocu me nt is carefully exami ned , an d i s b elieved to be entirel y re li abl e. H owe ver, no res po nsibility is
assumed for inaccuracies. Furthermore, Motorola reserves the right to make changes to any products herein to improve
readability, function, or design. Motorola does not assume any liability arising out of the applications or use of any product
or circuit described herein; nor does it cover any license under its patent rights nor the rights of others.
Trademarks
MOTOROLA and the Stylized M logo are registered in the US Patent & Trademark Office. All other product or service
names are the property of their respective owners.
1 = Basic
2 = Limited Package
3 = Limited Plus
4 = Intermediate
5 = Standard Package
Position 9 - Primary System Type
Conventional
A
=
Privacy Plus®
B
=
Clear SMARTNET™
C
=
Advanced Conventional Stat-Alert™
D
=
Enhanced Privacy Plus®
E
=
Nauganet 888 Series
F
=
Japan Specialized Mobile Radio (JSMR)
G
=
Multi-Channel Access (MCA)
H
=
CoveragePLUS™
J
=
MPT1327* - Public
K
=
MPT1327* - Private
L
=
Radiocom
M
=
Tone Signalling
N
=
Binary Signalling
P
=
Phonenet®
Q
=
Programmable
W
=
Secure Conventional
X
=
Secure SMARTNET™
Y
=
6 = Standard Plus
7 = Expanded Package
8 = Expanded Plus
9 = Full Feature/
Programmable
* MPT = Ministry of Posts and Telecommunications
Position 8 - Primary Operation
A
Conventinal/Simplex
=
B
Conventional/Duplex
=
C
Trunked Twin Type
=
D
Dual Mode Trunked
=
E
Dual Mode Trunked/Duplex
=
F
Trunked Type I
=
G
Trunked Type II
=
H
FDMA* Digital Dual Mode
=
J
TDMA** Digital Dual Mode
=
K
Single Sideband
=
L
Global Positioning Satellite Capable
=
M
Amplitude Companded Sideband (ACSB)
=
P
Programmable
=
* FDMA = Frequency Division Multiple Access
** TDMA = Time Division Multiple Access
viii
Model Charts
Model Programming,
Flashing, and Cloning
Model Charts
General Description
Programming,
Flashing, and
Cloning
Four model charts cover the three families of radios discussed in
this publication:
Conventional Systems Radios, HT 1000
Conventional Systems Radios, JT 1000 and MT 2000
Private Systems Radios
Shared Systems Radios
Each model chart lists the model number and its description,
and the three main radio components: the transceiver board, the
controller board, and the front cover. A single model may be
built using alternate controller boards and alternate transceiver
boards. The model charts will list all alternate controllers and all
alternate transceivers for any one particular model. Other model
components are referenced in electrical parts lists and exploded
view parts lists located toward the rear of the manual.
To determine which controller and transceiver is in a radio, that
radio must be opened and physically examined. Identification
kit number labels are attached to the controller board and to the
transceiver board.
All HT 1000, JT 1000, MT 2000, MTS 2000, and MTX Series
Radios covered in this manual are clonable. The JT 1000 Model
Radios are also front-panel programmable, and the MTS 2000
Series Radios are
applies only to HT 1000 Model Radios.
“flashable.” The following cloning information
HT 1000 Model Radios:
VHF DN models cannot be cloned to AN, BN, or CN models.
Any DN model can be cloned from like CN or DN models.
Prior to cloning any AN or BN model into a like CN or DN
model, a code plug fix must be performed on the AN or BN
model. Failure to do so could seriously degrade the scan and
battery-saver capabilities of the CN or DN model radio. For
code plug-fix information, order Service Repair Notice,
SRN-1218.
Note: Cloning any AN model into a like CN or DN model will
remove the TEST MODE capability.
vii
MODEL CHART
Conventional Systems Radios
(HT 1000 Models)
NCN6140C/ PMCN6140CController Board *
NTN7151B / NTN7151C Front Cover
X
NTN7156A / NTN7156BFront Cover
ITEM NO.DESCRIPTION
Transceiver Board
Controller Board *
Note:This model chart lists the model numbers and their respective major components of all
conventional systems radios covered in this publication.
A = Alternate transceiver board supplied, see “Model Charts General Description” (this section).
B = Alternate controller board supplied, see “Model Charts General Description” (this section).
X = One item is supplied per radio.
* = The radio model number is required when placing an order for the controller board. The
model number can be found on the FCC Label on the back of the radio. Refer to Replacement
Parts Ordering, Section 10 of this manual for instructions on how to place an order.
viii
MODEL CHART
Conventional Systems Radios
(JT 1000 and MT 2000 Models)
MODEL NUMBERDESCRIPTION
H01KDH9PA3ANJT 1000, VHF, 16CH, Front Display
H01RDH9PA3ANJT 1000, UHF B1, 16CH, Front Display
H01SDH9PA3ANJT 1000, UHF B2, 16CH, Front Display
H01KDD9AA4ANMT 2000, VHF, 16F, 5- to 1-Watt, Top Display
H01KDH9AA7ANMT 2000, VHF, 16CH, 5- to 1-Watt, Front Display
H01RDD9AA4ANMT 2000, UHF B1, 16F, 4- to 1-Watt, Top Display
H01RDH9AA7ANMT 2000, UHF B1, 16CH, 4- to 1-Watt, Front Display
H01SDD9AA4ANMT 2000, UHF B2, 16F, 4- to 1-Watt, Top Display
H01SDH9AA7ANMT 2000, UHF B2, 16CH, 4- to 1-Watt, Front Display
H01UCD6AA4ANMT 2000, 800MHz, 16F, 4- to 1-Watt, Top Display
H01UCH6AA7ANMT 2000, 800MHz, 16CH, 4- to 1-Watt, Front Display
ITEM NO.DESCRIPTION
AAA
AAA
AAA
A
A
AA
AA
AAA
A
AA
AA
AA
AA
BBB
BBBBBBBB
BBBBBBBB
XXXX
XXXXXXX
Note:This model chart lists the model numbers and their respective major components of all
conventional systems radios covered in this publication.
A = Alternate transceiver board supplied, see “Model Charts General Description” (this section).
B = Alternate controller board supplied, see “Model Charts General Description” (this section).
X = One item is supplied per radio.
* = The radio model number is required when placing an order for the controller board. The model
number can be found on the FCC Label on the back of the radio. Refer to Replacement Parts
Ordering, Section 10 of this manual for instructions on how to place an order.
Note:This model chart lists the model numbers and their respective major components of all private systems
radios covered in this publication.
A =Alternate transceiver board supplied, see “Model Charts General Description” (this section).
B = Alternate controller board supplied, see “Model Charts General Description” (this section).
X = One item is supplied per radio.
* = The radio model number and flash code are required when placing an order for the controller board. The
model number can be found on the FCC Label on the back of the radio. The Flashcode can be obtained
several ways:
Check the FCC Label on the back of the radio.
x
MODEL CHART
Shared Systems Radios
(MTX 838, MTX 8000, MTX•LS, and MTX 9000 Models)
MODEL NUMBERDESCRIPTION
MTX 838
H01KDC9DB3ANVHF, 16-Mode, 5- to 1-Watt
H01KDD9DB4ANVHF, 99-Mode, Top Display, 5- to 1-Watt
H01KDF9DB5ANVHF, 160-Mode, Front Display, Limited Keypad, 5- to 1-Watt
H01KDH9DB7ANVHF, 160-Mode, Front Display, Full Keypad, 5- to 1-Watt
H01RDC9DB3ANUHF B1, 16-Mode, 4- to 1-Watt
H01RDD9DB4ANUHF B1, 99-Mode, Top Display, 4- to 1-Watt
H01RDF9DB5AN
H01RDH9DB7AN
H01SDC9DB3ANUHF B2, 16-Mode, 4- to 1-Watt
H01SDD9DB4ANUHF B2, 99-Mode, Top Display, 4- to 1-Watt
Note:This model chart lists the model numbers and their respective major components of all shared systems radios covered in
this publication.
A = Alternate transceiver board supplied, see “Model Charts General Description” (this section).
B = Alternate controller board supplied, see “Model Charts General Description” (this section).
X = One item is supplied per radio.
* = The radio model number is required when placing an order for the uniboard. The model number can be found on the FCC
Label on the back of the radio. Refer to Replacement Parts Ordering, Section 10 of this manual for instructions on how to
Substitution of components may impair the intrinsic
safety of the radio.
W A R N I N G
* These accessories are approved as being intrinsically safe by Factory Mutual Research Corporation
(FMRC). Refer to the radio label for intrinsic safety ratings and required batteries. Only the accessories
and antennas noted (by *) may be used on approved radios.
xii
Maintenance Specifications for VHF Radios
(All Specifications Are Per Electronic Industries Association (EIA) 316B Unless Otherwise Noted.)
GENERALRECEIVERTRANSMITTER
FCC Designation: AZ489FT3768
Power Supply: Nickel-Cadmium Battery
Battery Voltage:
Nominal:7.5 Volts
Range:6 to 9 Volts
Battery Drain, Typical:
Standby:56mA
Receive:180mA
Transmit:2100mA
Temperature Range:
Operating:–30˚C to +60˚C
Storage:–40˚C to +85˚C
Duty Cycle (5-5-90):1 Watt/5 Watts
High Cap. Battery:11.2 Hrs./8 Hrs.
Ultra-High Cap. Battery:12.9 Hrs./9 Hrs.
Dimensions (H x W x D)
Less Battery:6.30" x 2.34" x 1.49"
(16.0cm x 5.9cm x 3.8cm)
With High Cap. Battery: 6.30" x 2.34" x 1.49"
(16.0cm x 5.9cm x 3.8cm)
With Ultra-High Cap. Battery: 6.30" x 2.34" x 1.54"
(16.0cm x 5.9cm x 3.9cm)
Weight: (w/Helical Antenna)
Less Battery:12.1oz. (343gm)
With High Cap. Battery:20.2oz. (573gm)
With Ultra-High Cap. Battery:21.3oz. (604gm)
* Frequencies in the 174-178MHz range are not permitted in the USA.
(–30 to +60˚C; 25˚C ref.):±.00025%
(821-824MHz Capable):± .00015%
Emission (Conducted and Radiated): –46dBw
FM Hum and Noise
(Companion Receiver):–40dB Typical
Distortion:3% Typical
Modulation Limiting:±5kHz
(821-824MHz):±4kHz
Recommended Battery:
High Capacity:NTN7143
Ultra-High Capacity:NTN7144
Maintenance Specifications for 900MHz Radios
(All Specifications Are Per Electronic Industries Association (EIA) 316B Unless Otherwise Noted.)
GENERALRECEIVERTRANSMITTER
FCC Designation: AZ489FT5748
Power Supply: Nickel-Cadmium Battery
Battery Voltage:
Nominal:7.5 Volts
Range:6 to 9 Volts
Battery Drain, Typical:
Standby:65mA
Receive:185mA
Transmit:1910mA
Temperature Range:
Operating:–30˚C to +60˚C
Storage:–40˚C to +85˚C
Duty Cycle (5-5-90):
High Cap. Battery:8 Hours
Ultra-High Cap. Battery:9 Hours
Dimensions (H x W x D)
Less Battery:6.30" x 2.34" x 1.49"
(16.0cm x 5.9cm x 3.8cm)
With High Cap. Battery: 6.30" x 2.34" x 1.49"
(16.0cm x 5.9cm x 3.8cm)
With Ultra-High Cap. Battery: 6.30" x 2.34" x 1.54"
(16.0cm x 5.9cm x 3.9cm)
Weight: (w/Helical Antenna)
Less Battery:12.1oz. (343gm)
With High Cap. Battery:20.2oz. (573gm)
With Ultra-High Cap. Battery:21.3oz. (604gm)
Frequency Range:935–941MHz
Bandwidth:6MHz
Quieting Sensitivity (20dBQ):0.5µV Max.
Usable Sensitivity
(12dB SINAD):0.35µV Max.
Intermodulation:–60dB
Selectivity
(12.5kHz Adjacent Channel):–60dB
Spurious Rejection:–60dB
Freq. Stability
(–30+60˚C; 25˚C reference):± .00015%
Rated Audio:500mW
Distortion (At Rated Audio):3% Typical
Channel Spacing:12.5kHz
Specifications Subject to Change Without Notice.
RF Power:2.4 Watts (Typ.)
2.9 Watts (Max.)
Frequency Range:896–902MHz
935–941MHz
Freq. Stability
(–30 to +60˚C; 25˚C ref.):± .00015%
Emission (Conducted and Radiated): –46dBw
FM Hum and Noise
(Companion Receiver /
HEAR CLEAR):–45dB Typical
Distortion:3% Typical
Modulation Limiting:±2.5kHz
Recommended Battery:
High Capacity:NTN7143
Ultra-High Capacity:NTN7144
xiv
Glossary
A/DAnalog to Digital converter; converts an instantaneous dc voltage level to a
corresponding digital value.
ALCAutomatic Level Control; a circuit in the transmit RF path that controls RF
power amplifier output, provides leveling over frequency and voltage, and
protects against high VSWR.
CMOSComplementary metal-oxide semiconductor.
ChannelDefines conventional transmit and receive frequencies and muting conditions.
Closed ArchitectureA controller configuration that utilizes a microcontroller with no external
memory (non-FLASHport operation).
CBI(Customer Board Initialization) When the controller board is received, it will
need a serial from the defect unit. The serial is manually entered via the RSS
prior to proceeding any further with the replacement process.
D/ADigital to Analog converter; converts a digital value to a corresponding dc
voltage value.
DTMFDual Tone Multi-Frequency.
DPLDigital Private-Line.
FirmwareSoftware or a software/hardware combination of computer programs and data,
with a fixed logic configuration stored in a read-only memory; information can
not be altered or reprogrammed.
FGUFrequency Generation Unit.
FlashcodeA Motorola term (model option definition code) that determines what
FLASHport options are in a radio.
FLASHportA Motorola term that describes the ability of a radio to change memory. Every
FLASHport radio contains a FLASHport EEPROM memory chip that can be
software written and rewritten to, again and again.
ICIntegrated Circuit.
ISWInbound Signalling Word; data transmitted on the control channel from the
subscriber unit to the central controller.
LTRLogic Trunked Radio; a registered trademark of E.F. Johnson Company.
MCUMicroControl Unit.
MDCMotorola Digital Code.
OMPACOver-Molded Pad-Array Carrier; a Motorola custom IC package, distinguished by
the presence of solder balls on the bottom pads.
Open ArchitectureA controller configuration that utilizes a microprocessor with extended ROM,
RAM, and EEPROM, (FLASHport capable).
OSWOutbound Signalling Word; data transmitted on the control channel from the
central controller to the subscriber unit.
PC BoardPrinted Circuit board.
PLPrivate-Line® tone squelch; a continuous sub-audible tone that is transmitted
along with the carrier.
xv
PLLPhase-Locked Loop; a circuit in which an oscillator is kept in phase with a
T
T
T
reference, usually after passing through a frequency divider.
PTTPush-To-Talk; the switch located on the left side of the radio which, when
pressed, causes the radio to transmit.
RegistersShort-term data-storage circuits within the microcontrol unit or programmable
logic IC.
RESETReset line; an input to the microcontroller that restarts execution.
RF PARadio Frequency Power Amplifier.
RSSRadio Service Software.
RSSIReceived signal strength indicator; a dc voltage proportional to the received rf
signal strength.
RX DATARecovered digital data line.
SLICSupport-Logic IC; a custom gate array used to provide I/O and memory
expansion for the microcontroller.
SmartRibUse in conjunction with the RSS to read the Flashcode and Model Number, and
to flash upgrade radios.
SoftpotSoftware potentiometer; a computer-adjustable electronic attenuator.
SoftwareComputer programs, procedures, rules, documentation, and data pertaining to
the operation of a system.
SquelchMuting of audio circuits when received signal levels fall below a pre-determined
value.
SRAMStatic-RAM chip used for volatile, program/data memory.
Standby ModeAn operating mode whereby the radio is muted but still continues to monitor
data.
OTTime-Out Timer; a timer that limits the length of a transmission.
PLTone Private-Line; Continuous Tone Coded Squelch System (CTCSS), industry
standard.
SOPThin Small-Outline Package.
µCMicrocontrol unit (see MCU).
VCOVoltage-Controlled Oscillator; an oscillator whereby the frequency of oscillation
can be varied by changing a control voltage.
VSWRVoltage Standing Wave Ratio.
xvi
Introduction
1
This manual includes safety information, model charts, specifications,
fundamental disassembly/reassembly procedures; schematic diagrams,
printed circuit board details, flex circuit diagrams, and several parts
lists to completely cover the HT 1000, JT 1000, MT 2000, MTS 2000,
and MTX series radios. Hereafter, the text will refer collectively to these
radios as “this family of radios.” For maintenance/troubleshooting,
theory, accessories, and operation of the radio, refer to the applicable
manuals available separately. To help you with your selection, a list is
provided in this manual, titled “Related Publications Available
Separately.”
Special notices are incorporated into the text, alerting you to safety
hazards and suggesting procedures. These notices are divided and
labeled according to the information they contain so that you can
become immediately aware of the type of information being
presented. The three classifications are: WARNINGS, CAUTIONS, and
NOTES.
This is an operational procedure, practice, or
!
!
W A R N I N G
!
C a u t i o n
NOTE:This is an operational procedure, practice, or
condition, etc., which may result in injury or
death if not carefully observed.
This is an operational procedure, practice, or
condition, etc., which may result in damage to
the equipment if not carefully observed.
condition, etc., which is essential to
emphasize.
1
Notes
2
Test Equipment,
Service Aids, and Tools2
Recommended Test
Equipment
The list of equipment contained in Table 1 includes all of the standard
test equipment required for servicing two-way portable radios, as well
as several unique items designed specifically for servicing this family
of radios. Battery-operated test equipment is recommended when
available. The “Characteristics” column is included so that equivalent
equipment may be substituted; however, when no information is
provided in this column, the specific Motorola model listed is either a
unique item or no substitution is recommended.
Table 1 Recommended Test Equipment
MOTOROLA
MODEL NUMBER
R2600 Series
R2670 (for trunking)
*R1097ADigital Multimeter4,000 counts
*R1150ECode SynthesizerInjection of audio and digital
*R1527APortable Test Receiver Counter; CTCSS, DCS, and
DESCRIPTIONCHARACTERISTICSAPPLICATION
System AnalyzerThis monitor will substitute
for items with an asterisk (*)
True RMS Metering
0.3% basic accuracy
DTMF decoder
Frequency/deviation meter and
signal generator for wide-range
troubleshooting and alignment
Digital voltmeter recommended
for ac/dc voltage and current
measurements
signalling codes
Portable Radio Monitor
R1368ADual-Trace
Oscilloscope
*S1350C
*ST1213B (VHF)
*ST1223B (UHF)
R1065Load Resistor10-watt BroadbandFor use with Wattmeter
S1339ARF Millivolt Meter100µV to 3V rf
*R1013B or
*R1370A
S1347D or
S1348D (programmable)
Watt Meter
Plug-in Element
RF Dummy Load
SINAD Meter
SINAD Meter V/RMSRMS Audio Voltmeter
DC Power Supply0-20Vdc, 0-5 Amps
20MHz bandwidth (some
system analyzers, R2000
series, are 15MHz bandwidth)
5mV to 5V/division
50-ohm, ±5% accuracy
10 Watts, maximum
0-1000MHz, 300W
10kHz to 1.2GHz
current limited
Waveform measurements
Transmitter power output
measurements
RF level measurements
Receiver sensitivity
measurements
Bench supply for 7.5Vdc
3
Service Aids and
Recommended Tools
Refer to the “Service Aids” in Table 2 and “Recommended Service
Tools” list in Table 3 for a listing and description of the service aids and
tools designed specifically for servicing this family of radios, as well as
the more common tools required to disassemble and properly
maintain the radio. These kits and/or parts are available from the
United States and Canada Radio Products Services Division listed in the
“Replacement Parts Ordering” section at the back of this manual.
Field ProgrammingThis family of radios can be aligned and programmed in the field. This
requires specific equipment and special instructions. Refer to the
applicable “Radio Service Software User's Manual” for complete field
programming information.
4
The following table lists service aids recommended for working on this
family of radios. These items are available from Radio Products Services
Division.
Table 2 Service Aids
MOTOROLA PART NO.DESCRIPTIONAPPLICATION
Servicers Video TapeVideo TapeIncludes Radio Introduction.
RKN-4035DRIB/Radio/test set cableConnects radio to RTX-4005B Test Box and RIB.
RLN-1014ABattery EliminatorInterconnects radio to power supply.
RLN-1018ATest FixtureProvides for troubleshooting of the radio when the
housing is removed.
RTX-4005B or both
RTX-4005A / RPX-4665A
RLN-4460APortable/Mobile Test SetProvides more convenient testing of mobiles and
RLN-4008BRadio Interface Box (RIB)Enables communications between the radio and the
RLN-1015C
0180302E27
3080390B48
0180357A57
0180358A56
3080369B71
3080369B72
RKN-4036DCloning CableAllows a radio to be duplicated from a master radio
RVN-4097LRadio Service SoftwareSoftware on 3-1/2 in. and 5-1/4 in. floppy disks.
RVN-4098GRadio Service Software
Portable Test Set
Field Modification Kit
Smart RIB
Power Supply
Computer Interface Cable
Wall-mounted Power Supply
Wall-mounted Power Supply
Computer Interface CableUse B72 for the IBM PC AT (7-pin). All other IBM
(HT/JT 1000/VISAR Models
Only)
Allows switching for radio testing.
portables.
computer’s serial communications adapter.
Used to read Flashcode.
Used to supply power to the Smart RIB.
Connects computer serial adapter to Smart RIB.
Used to supply power to the RIB (120 VAC).
Used to supply power to the RIB (220 VAC).
models use B71.Connects the computer’s serial
communications adapter to the RIB (25-pin).
by transferring programmed data from one radio to
another (HT 1000/MT 2000 Models Only).
Software on 3-1/2 in. and 5-1/4 in. floppy disks.
RVN-4138BRadio Service Software
MTX•LS Model
5880348B33SMA to BNC AdaptorAdapts radio’s antenna port to BNC cabling of test
RLN-4201BBattery TesterTests battery charge.
RLN-4048ABattery Tester AdapterAdapts HT 1000, JT 1000, MT 2000, MTS 2000, and
RTL-4208ARF Probe50-ohm, high-frequency probe.
RT-5144/48/0
RT-5144/48/2
Test Probe (black)
Test Probe (red)
Software on 3-1/2 in. and 5-1/4 in. floppy disks.
equipment.
MTX Series radio batteries to the RLN-4201 Battery
Tester.
Needle-fine test probes for high-density circuitry.
5
Service ToolsThe following table lists the tools recommended for working on this
family of radios; these tools are also available from Motorola. The
R-1319A solder/desolder workstation requires the use of some reflow
nozzles which are included with the workstation.
Table 3 Recommended Service Tools
MOTOROLA PART NO.DESCRIPTIONAPPLICATION
R1319AChip Master Surface Mount
Device (SMD) Rework Station
0180356B79Solder/Desolder StationFor soldering and desoldering thru-hole
0180372E51Illuminated Magnifying
System
0180386A82Anti-static Grounding KitUsed during all radio assembly and disassembly
6680384A98Brush
1010041A86Solder (RMA type), 63/37,
0.020" diameter, 1 lb. spool
0180303E45SMD Tool KitKit includes chemicals and hand tools required to
6680334E07Chassis/Front Cover
Separation Tool
6680334E08Flex Connector Opening ToolUsed to raise the sliding portion of the flex
Temperature-controlled, self-contained soldering/
desoldering repair station for installation and
removal of surface-mounted devices. Removes RF
PA’s.
components.
procedures.
do many SMD rework procedures.
Used to pry the chassis away from the front cover
during disassembly.
connectors.
6
Transceiver
Performance Testing3
GeneralThe HT 1000, JT 1000, MT 2000, MTS 2000, and MTX series radios
have been prepared to meet published specifications through their
manufacturing process, with the use of laboratory-quality test
equipment of highest accuracy. The recommended field service
equipment approaches the accuracy of the manufacturing equipment
with a few exceptions. Accuracy of the equipment must be maintained
in compliance with the manufacturer’s recommended calibration
schedule.
SetupSupply voltage can be connected from the battery eliminator. The
equipment required for alignment procedures is connected as shown
in the Radio Alignment Test Setup diagram.
Initial equipment control settings should be as indicated in the
following table, and should hold for all alignment procedures except
as noted in Table 4.
Test Mode
Table 4 Equipment Initial Control Settings
SERVICE MONITORTEST SETPOWER SUPPLY
Monitor Mode: Pwr Mon
RF Attn: –70
AM, CW, FM: FM
O'scope Source: Mod
O'scope Horiz: 10mSec/Div
O'scope Vert: 2.5kHz/Div
O'scope Trig: Auto
Monitor Image: Hi
Monitor BW: Nar
Monitor Squelch: mid CW
Monitor Vol: 1/4 CW
* When testing TX deviation, where the modulation is greater than
1kHz, set the Service Monitor low pass filter (LPF) to 15kHz.
** The Test Set MT/PL switch controls internal/external audio
switching.
Spkr set: A
Spkr/load:
Speaker
PTT: OFF
(center)
Voltage: 7.5Vdc
DC on/standby:
Standby
Volt Range: 10
Current: 2.5
RF Test Mode,
HT 1000/JT 1000 Radios
NOTE:This note applies to software version R02.09
and earlier. If the radio is placed in TEST MODE
7
with Option•Mate interface plug enabled
through the HT 1000 RSS, TX and RX audio
will be muted. Do not test Analog Voice
Security (AVS) installed radios in the TEST
MODE.
When the HT 1000/JT 1000 radio is operating in its normal
environment, the radio's microcontroller controls the RF channel
selection, transmitter key-up, and receiver muting. However, when the
unit is on the bench for testing, alignment, or repair, it is removed
from its normal environment. It cannot receive commands from its
system and, therefore, the internal microcontroller will not key the
transmitter nor unmute the receiver. This prevents the use of normal
tune-up procedures. To solve this problem a special routine, called
TEST MODE or “air test,” has been incorporated in the radio.
To enter test mode:
1. Turn the radio on.
2. Within ten seconds after the self test is complete, press the
monitor button (side button 3, SB3) five times in succession. After
the fifth press:
a. (HT 1000 radios), a tone is emitted to indicate that the rf test
mode has been entered.
b. (JT 1000 radios), the display will show the firmware version of
the microprocessor for two seconds, emit a tone, then display
TEST MODE).
3. Each additional press of SB3 will advance to the next test channel.
(refer to Table 6), and a corresponding set of tones will indicate the
channel.
4. Pressing SB2 will scroll through and access test environments as
shown in Table 5.
NOTE:Transmit into a load when keying a radio
under test.
To exit test mode, turn the radio off then back on.
Table 5 Test Environments, HT 1000/JT 1000 Radios
NO. OF
BEEPS
1Carrier SquelchRX: if carrier detected
3Tone Private-LineRX: unsquelch if carrier and tone
DESCRIPTIONFUNCTION
TX: mic audio
(192.8Hz) detected
TX: mic audio + tone (192.8Hz)
4Digital
Private-Line
RX: unsquelch if carrier and digital code
(131) detected
TX: mic audio + digital code (131)
detected
8
Table 6 Test Frequencies, HT 1000 / JT 1000
NO. OF
BEEPS
1
2
3
4
5
6
TEST
CHANNEL
TX #1136.025403.100450.025806.0125
RX #1136.075403.150450.075851.0625
TX #2142.125424.850465.225815.0125
RX #2142.175424.900465.275860.0625
TX #3154.225438.050475.225824.9875
RX #3154.275438.100475.275869.9375
TX #4160.125444.050484.975851.0125
RX #4160.175444.100485.025851.0625
TX #5168.075456.350500.275860.0125
RX #5168.125456.400500.325860.0625
TX #6173.975463.700511.975869.9875
RX #6173.925463.650511.925869.9375
Control Head Test Mode,
HT 1000/JT 1000 Radios
VHFUHF BAND 1UHF BAND 2800
To check the buttons and the switches, perform the following tests:
1. Turn radio on.
2. After the self test is complete, press the monitor button (side
button 3, SB3) five times in succession, within 10 seconds. After
the fifth press, a tone is emitted to indicate that the RF test mode
has been entered.
3. Exit the RF test mode and enter the control head test mode by
pressing and holding SB3 for more than three seconds. Upon
entering the control head test mode, a tone is emitted and the
green LED begins flashing. The green LED continues to flash until
the control head test mode is exited.
NOTE:Return to the RF test mode by pressing and
holding SB3 for more than three seconds. Then
re-enter the control head test mode by pressing
and holding SB3 for more than three seconds.
4. Test each switch (toggle, rotary, or button-actuated) by changing
the position of the switch. A tone is emitted to indicate a “good
test” each time a switch position is changed.
NOTE:Pressing and releasing a button-actuated
switch are both considered switch-position
changes.
NOTE:No tone when a switch position is changed
indicates a test failure. Test the on/off volume
potentiometer/switch by rotating the
potentiometer clockwise and counter
9
clockwise. The loudness of tone beeps will
increase and decrease accordingly.
NOTE:During test mode, the volume level is not
regulated to the same limits as during normal
radio operation.
To exit test mode, turn the radio off then back on.
RF Test Mode, MT 2000,
MTS 2000, and MTX
Series Radios
When the MT 2000, MTS 2000, or MTX series radio is operating in its
normal environment, the radio’s microcomputer controls the RF
channel selection, transmitter key-up, and receiver muting. However,
when the unit is on the bench for testing, alignment, or repair, it is
removed from its normal environment. It cannot receive commands
from its system and, therefore, the internal microcomputer will not
key the transmitter nor unmute the receiver. This prevents the use of
normal tune-up procedures. To solve this problem a special routine,
called TEST MODE or “air test,” has been incorporated in the radio.
To enter test mode:
1. Turn the radio on.
2. After the self test is complete, press the monitor button (side
button 3, SB3) five times in succession, within 10 seconds.
3. After “RF TEST” appears (on 14-character displays) or “RF TST”
appears (on 6-character displays), press the orange button on top
of the radio once. “1 CSQ” appears, indicating: test frequency 1,
carrier squelch mode.
4. Each additional press of SB3 will advance to the next test channel.
(Refer to Table 8.)
5. Pressing SB2 will scroll through and access test environments as
shown in Table 7.
Control Head Test Mode,
MT 2000, MTS 2000,
and MTX Series Radios
10
NOTE:Transmit into a load when keying a radio
under test.
NOTE:Radios without display indicate test-
environment function by emitting a
corresponding number of beeps. See Table 7.
To check the display, the buttons, and the switches, perform the
following tests:
1. Turn radio on.
2. After the self test is complete, press the monitor button (side
button 3, SB3) five times in succession, within 10 seconds.
3. After ”RF TEST” appears on the display, press side button 1 (SB1),
“CH TEST” (14-character radio) or “CH TST” (6-character radio)
appears on the display.
4. Next, press and hold the orange button on top of the radio; all
segments on the display will light, and the LED on the control top
will illuminate a yellowish color.
5. Release the orange button; ”3/0” appears, which indicates that
switch 3 is in the open condition.
6. Press the orange button again; “3/1” appears, which indicates that
switch 3 is in the closed condition.
7. Rotate the mode selector knob; ”4/0” thru ”4/15” appears, which
indicates that knob 4 is in mode position 1 thru 15.
8. Rotate the concentric switch; ”65/0” and “65/1” appears.
9. Rotate the volume control; “2/0” thru “2/255” appears.
10.Press SB1, view “96/1”; release, view “96/0”
11.Press SB2, view “97/1”; release, view “97/0”
12.Press SB3, view “98/1”; release, view “98/0”
13.Press PTT, view “1/1”; release, view “1/0”
14.Toggle Switch in ‘A’ position “64/0”, ‘B’ position “64/1”,
‘C’ position “64/2”
15.Keypad:
• Press 0, view “48/1”; release, view “48/0”
• Press 1, view “49/1”; release, view “49/0”
• Press 2, view “50/1”; release, view “50/0”
• Press 3, view “51/1”; release, view “51/0”
• Press 4, view “52/1”; release, view “52/0”
• Press 5, view “53/1”; release, view “53/0”
• Press 6, view “54/1”; release, view “54/0”
• Press 7, view “55/1”; release, view “55/0”
• Press 8, view “56/1”; release, view “56/0”
• Press 9, view “57/1”; release, view “57/0”
• Press *, view “58/1”; release, view “58/0”
• Press #, view “59/1”; release, view “59/0”
• Press <, view “128/1”; release, view “128/0”
• Press HOME, view “129/1”; release, view “129/0”
• Press >, view “130/1”; release, view “130/0”
To exit test mode, turn the radio off then back on.
11
Table 7 Test Environments, MT 2000, MTS 2000, and MTX Series Radios
NO. OF BEEPSDISPLAYDESCRIPTIONFUNCTION
1*CSQCarrier SquelchRX: unsquelch if carrier detected
TX: mic audio
2HCHear Clear**RX: unsquelch if carrier detected
TX: compressed mic audio
3TPLTone
Private-Line
4DPLDigital
Private-Line
5TLSTrunking
Low Speed
6THSTrunkingRX: unsquelch if valid outbound signalling word (OSW)
7DTM
multiple freq.
8M12MDC1200RX: unsquelch if carrier detected without DOS (1800Hz);
9SECSecure***RX: auto-coded clear
*radios without display indicate function by emitting a number of beeps
** on 900 MHz radios only
***on radios equipped with secure option
**** not available on all radios
dual-toneRX: unsquelch if carrier detected
RX: unsquelch if carrier and tone (192.8Hz) detected
TX: mic audio + tone (192.8Hz)
RX: unsquelch if carrier and digital code (131) detected
TX: mic audio + digital code (131) detected
RX: unsquelch if carrier detected
TX: mic audio + connect tone (105.8Hz) @ correct deviation
detected High Speed
TX: 1500Hz tone
TX: selected DTMF tone pair
squelch if carrier detected with DOS (1800Hz)
TX: 1500Hz tone
TX: with key present - encrypted audio
with key absent - constant unsquelch
Table 8 Test Frequencies, MT 2000, MTS 2000, and MTX Series Radios
Tal k-a rou nd
Modulation
(radios with
conventional,
clear mode,
talk-around
operation only
Tal k-a rou nd
Modulation
(radios with
conventional,
secure mode,
talk-around
operation only
(**)
COMMUNICATIONS
ANALYZER
Mode: PWR MON
4th channel test frequency◊
Monitor: Frequency error
Input at rf In/Out.
Mode: PWR MON
4th channel test frequency◊
atten to –70, input to RF In/Out,
Monitor: DVM, AC Volts Set 1kHz
Mod Out level for 0.025Vrms at test
set, 80mVrms at AC/DC test set jack
As above.TEST MODE
Mode: PWR MON
4th channel test frequency◊
atten to –70, input to RF In/Out.
As above.TEST MODE,
As above,
4th channel test frequency◊
Change frequency to a
conventional transmit
frequency, BW to narrow.
Change frequency to conventional
talk-around frequency.
Mode: PWR MON
deviation, attenuation to –70,
input to RF In/Out
Monitor: DVM, AC volts
Mod: 1kHz Out level for 25mVrms
at test set.
Change frequency to conventional
talk-around frequency.
Mode: PWR MON
deviation, attenuation to –70,
input to RF In/Out
Monitor: DVM, AC volts
Mod: 1kHz Out level for 25mVrms
at test set.
*800 MHz radios only
**The secure mode, talk-around modulation test is only required for trac mode radios which
do not have clearmode talk-around capability.
***Trunked Only
∆When testing voice modulation in the continuous mode, AGC must be disabled.
◊ See Table 6 or Table 8 as applicable.
Conventional
talk-around
personality
(secure mode
operation).
Load key into
radio
1 Sec.
14
PTT to continuous
(during the
performance
check).
As above.Refer to Maintenance Specifica
As above, mete
selector to mic.
PTT to continuous
(during the
performance
check).
Remove
modulation
input.
PTT to continuous
(during the
performance
check).
As above.Deviation:
As above.Deviation:
As above.Deviation:
As above.Deviation:
Frequency error to be < 150Hz.
tions page in front of manual.
Deviation:
VH F, UH F, an d 80 0M H z:
≥ 3.6kHz but ≤ 5.0kHz.
Deviation:
UHF, 800MHz: ≥ 500Hz but
≤ 1000Hz.
Press PTT switch on radio.
Say “four” loudly into the
radio mic. Measure deviation:
VH F, UH F, an d 80 0M H z:
≥ 3.8kHz but ≤ 5.0kHz.
900MHz: ≤ 2.5kHz.
Deviation:
UHF and 800MHz:
≥ 2.4kHz but ≤ 3.6kHz.
900MHz: ≥ 1.52kHz but ≤ 1.95kHz.
VH F, UH F, an d 80 0M H z:
≥ 3.05kHz but ≤ 3.45kHz.
900MHz: ≥ 1.5kHz but ≤ 1.9kHz.
VH F, UH F, an d 80 0M H z:
≥ 500Hz but ≤ 1000Hz.
900MHz: ≥ 250Hz but ≤ 500Hz.
UHF and 800MHz: ≥ 3.8kHz
but ≤ 5.0kHz.
900MHz: ≥ 1.95kHz but
≤ 2.45kHz.
UHF and 800MHz: ≥ 3.6kHz
but ≤ 4.4kHz.
Error-Code
Displays4
Power-up Display
Codes
At power-up, the radio performs cursory tests to determine if its basic
electronics and software are in working order. Problems detected
during these tests are presented as error codes on the radio display. The
presence of an error code should prompt the user that a problem exists
and that a service technician should be contacted.
Self-test errors are classified as either fatal or non-fatal. Fatal errors will
inhibit user operation, while non-fatal errors will not. Use Table 11 to
aid in understanding particular power-up error code displays.
Bad external codeplug data,
Defective external EEPROM
Unprogrammed external
codeplug data
Bad internal codeplug data,
Defective microcontroller
Unprogrammed internal
codeplug data
NOTE:Due to the nature of fatal ROM and RAM errors, it may not be possible to present
an error code on the display. In these cases the radio will attempt to display the
appropriate error code, generate an illegal mode tone for one second and then
reset its microcontroller.
15
Operational Display
Codes
During operation, the radio performs dynamic tests to determine if it
is working properly. Problems detected during these tests are presented
as error codes on the radio display. The presence of an error code
should prompt a user that a problem exists and that a service
technician should be contacted. Use Table 12 to aid in understanding
particular operational error code displays.
Table 12 Operational Display Codes
FAILURE CODE
14-Character
Display
FAIL 001F001Synthesizer out of lockBad frequency data in codeplug;
6-Character
Display
DESCRIPTIONPOSSIBLE SOURCE
defective synthesizer
FAIL 002F002Selected Mode (Zone/Channel)
codeplug checksum error
FAIL 100F100Incompatible trunking
software and hardware
FAIL 101F101Incompatible MDC1200
software and hardware
Bad codeplug data
Trunking hardware decoder disabled in
codeplug; old SLIC IC version
MDC 1200 hardware decoder disabled in
codeplug; old SLIC IC version
16
Radio Alignment
Procedure5
GeneralAn IBM PC (personal computer) and Radio Service Software (RSS) are
required to align the radio. Refer to the applicable RSS manual for
installation and setup procedures for the software. To perform the
alignment procedures, the radio must be connected to the PC, RIB
(radio interface box), and Universal Test Set as shown in Figure 1.
S1347D
POWER
SUPPLY
BATTERY
ELIMINATOR
RLN-1014A
RADIO
SMA-BNC
58-80348B33
PROGRAM/TEST CABLE
RKN-4035A
RIB
RLN-4008B
30 dB PAD
TRANSMIT
30 dB PAD
BNC
RF GENERATOR
RECEIVE
SET TO APPROX. 800mV FOR TX
AUDIO IN
TEST BOX
RTX-4005B
MEASURE 80mV AT THE
AC/DC METER PORT FOR TX
TX
RX
DATA
BUSY
GND
SERVICE MONITOR
OR COUNTER
WATTMETER
AUDIO GENERATOR
SINAD METER
AC VOLTMETER
COMPUTER
COMPUTER INTERFACE
RIB POWER SUPPLY
01-80357A57 (120V)
30-80369B72 (IBM "AT" ONLY)
30-80369B71
Figure 1 Radio Alignment Test Setup
CABLE
MAEPF-22856-B
17
Service
!
C a u t i o n
Menu
F2
Transmitter
Alignment
Menu
F2 - Reference Oscillator
F3 - Tx Power
F4 - Tx Dev Balance
F5 - Tx Dev Limit
F6 - Tx Dev Reference
F7 - Tx VCO Crossover
All service and tuning procedures are performed from the SERVICE
menu, which is selected by pressing F2 from the MAIN MENU.
Figure 2 illustrates how the RSS SERVICE screens are organized.
All SERVICE screens read and program the radio codeplug directly; you
do NOT have to use the RSS GET/SAVE functions to use the SERVICE
menus. You will be prompted at each screen to save changed values
before exiting the screen. RSS references in this manual are to
HT 1000 / JT 1000 RSS. Some slight differences may be noted it you are
using the MTS/MTX RSS.
Signalling
Alignment
Menu
F2 - DTMF
F3 - Trunking
F4 - MDC 1200
F6
Test
Mode
Menu
MAEPF-22857-A
Do NOT switch radios in the middle of any
SERVICE procedure. Always use the EXIT key to
return to the MAIN menu screen before
disconnecting the radio. Improper exits from the
SERVICE screens may leave the radio in an
improperly configured state and result in
seriously degraded radio or system performance.
The radio contains internal test modes that can be accessed from the
RSS. The test modes permit the service technician to easily select
various frequency, modulation, and transmit power combinations to
verify proper operation of the radio. The test modes can be used to
check both transmit and receive operation. From the Service Menu
press F6 to navigate to the TEST MODE screen.
The SERVICE screens introduce the concept of the “softpot”, an analog
SOFTware controlled POTentiometer used for adjusting all transceiver
alignment controls.
18
Each SERVICE screen provides the capability to increase or decrease
the ‘softpot’ value with the keyboard UP/DOWN arrow keys
respectively. A graphical scale is displayed indicating the minimum,
maximum, and proposed value of the softpot, as shown in Figure 3.
015
Min.
Value
Figure 3 Softpot Concept
Adjusting the softpot value sends information to the radio to increase
(or decrease) a DC voltage in the corresponding circuit. For example,
pressing the UP arrow key at the Reference Oscillator screen instructs
the radio microprocessor to increases the voltage across a varactor in
the reference oscillator to increase the frequency.
In ALL cases, the softpot value is just a relative number corresponding
to a D/A (Digital-to-Analog) generated voltage in the radio. All
standard measurement procedures and test equipment are similar to
previous radios.
Max.
Value
MAEPF-22858-O
Perform the following procedures in the sequence indicated.
Reference Oscillator
Alignment
Adjustment of the reference oscillator is critical for proper radio
operation. Improper adjustment will not only result in poor operation,
but also a misaligned radio that will interfere with other users
operating on adjacent channels. For this reason, the reference
oscillator should be checked every time the radio is serviced or once a
year, whichever comes first. The frequency counter used for this
procedure must have a stability of 0.1 ppm (or better).
1. From the SERVICE menu, press F2 to select TRANSMITTER
alignment.
2. Press F2 again to select the REFERENCE OSCILLATOR softpot.
3. Press F6 to key the radio. The screen will indicate that the radio is
transmitting.
4. Measure the transmit frequency on your service monitor.
5. Use the UP/DOWN arrow keys to adjust the reference oscillator per
the targets shown in Table 13.
Table 13 Reference Oscillator Alignment
BANDTARGET
VHF0 to 300 Hz
UHF0 to 300 Hz
800/900 MHz0 to 300 Hz
19
Front-End
Pre-Selector
(VHF/UHF only)
NOTE:This procedure is only required for tuning the
front-end filter varactors in the VHF and UHF
models. The 800 and 900 MHz models utilize a
stripline pre-selector.
1. Set the Test Box (RTX4005B) meter selection switch to the “VOL”
position, and connect a dc voltmeter capable of 1mV resolution
on a 2V scale to the Test Box AC/DC meter port to monitor the
Received Signal Strength Indicator (RSSI).
2. From the SERVICE menu, press F3 to select RECEIVER alignment.
3. Press F2 to select the FRONT END FILTER softpot. The screen will
indicate the receive frequencies at which the filter is to be tuned.
4. Set the RF test generator to the first receive frequency +150 Hz. Set
the RF level at the radio standard antenna port to 4.0 µVolts with
no modulation.
5. Adjust the UP/DOWN arrow keys to obtain a peak voltage on the
dc voltmeter.
6. Press F8 to program the softpot value.
7. Repeat steps 4-6 for the remaining test frequencies.
8. Press F10 and F2 to return to the RECEIVER menu.
Rated Audio1. Set test box (RTX-4005B) meter selection switch to the “AUDIO
PA” position and connect an ac voltmeter to the test box ac/dc
meter port.
2. Press F3 to select the RATED AUDIO softpot. The screen will
indicate the receive test frequency to be used.
3. Set the RF test generator to the receive test frequency, and set the
RF level at the radio standard antenna port to 1 mV modulated
with standard test modulation (see Table 14).
Table 14 Standard Test Modulation (1 kHz Tone)
BandDeviation
VHF/UHF/800 MHz3.0 kHz
900 MHz1.5 kHz
4. Adjust the UP/DOWN arrow keys to obtain rated audio (as close as
possible to 3.74 Vrms) into a speaker (28 ohms) or equivalent
resistive load.
5. Press F8 to program the softpot value.
20
6. For HearClear-equipped radios, go to step 7; otherwise press F10 to
return to the RECEIVER menu.
7. Now set the RF test generator to the receive test frequency, and set
the RF level at the radio standard antenna port to 1 mV modulated
with a 1kHz tone, 1.2kHz deviation.
8. Select the Hear Clear RATED AUDIO softpot, and adjust the UP/
DOWN arrow keys to obtain rated audio (3.74 Vrms) into a speaker
(28 ohms) or equivalent resistive load.
9. Press F8 to program the softpot value.
10.Press F10 to return to the RECEIVER menu.
SquelchNOTE: Verify that audio output is set to rated audio
(3.74 Vrms)
1. Select the 25kHZ squelch tuning menu. (note: 25 kHZ must be
tuned before tuning either 12.5kHZ or 20kHZ squelch).
2. With no signal applied, decrease the softpot value until squelch
opens. Set the RF test generator to the frequency plus the
following offset; (VHF: +200HZ), (UHF: +200HZ), (800MHZ:
+500HZ). Adjust the generator for 8 to 10 dB Sinad.
3. Increase the softpot until the squelch closes.
4. Monitor for squelch chatter. If chatter is present, increase the
softpot until no chatter is detected. Press F8 to program the softpot
value. Press ENTER to select the next softpot adjustment.
5. Repeat step 2 through 4 for all test frequencies shown on the
screen.
6. If you are using 25kHZ channel spacing, skip to step 8. Otherwise,
go into the 12.5kHZ or 20kHZ squelch tuning menus.
7. Repeat steps 2 through 5.
8. Press F10, then F10 again to return to the service menu.
Transmitter PowerVHF and UHF radios require two power-level adjustments, a high-
power or rated-power adjustment, and a low-power adjustment. The
low power adjustment is required since the radio may be used in a
reduced power mode, or with a vehicular adapter.
NOTE:All power measurements are to be made at the
antenna port.
1. From the SERVICE menu, press F2 to select TRANSMITTER
alignment.
2. Press F3 to select the TRANSMIT POWER softpot. The screen will
indicate the transmit test frequencies to be used.
3. Begin with the highest test frequency shown.
4. Press F6 to key the radio, and use the UP/DOWN arrow keys to
adjust the transmit power per the value shown in Table 15.
5. Press F6 to dekey the radio, and then press F8 to program the
value.
6. Repeat steps 4 and 5 for the remaining test frequencies.
7. Press F10, then F2 to return to the TRANSMIT menu.
21
Table 15 Transmit Power Setting
VHFUHF
Power LevelTest FrequenciesPower LevelTest Frequencies
136 - 174MHz177.975MHz450 - 512MHz512 - 520MHz
5 W5.2 - 5.4 4.2 - 4.44 W4.2 - 4.43.2 - 3.4
1 W1.2 - 1.41.2 - 1.41 W1.2 - 1.41.2 - 1.4
800 MHz900 MHz
Power LevelAll Test FrequenciesPower LevelAll Test Frequencies
3 W3.2 - 3.42.4 W (Typ.)
Transmit
Deviation Balance
(Compensation)
Compensation alignment balances the modulation sensitivity of the
VCO and reference modulation (synthesizer low frequency port) lines.
The compensation algorithm is critical to the operation of signalling
schemes that have very low frequency components (e.g. DPL) and
could result in distorted waveforms if improperly adjusted.
NOTE: Disable all audio band filters on the service monitor.
NOTE: (Secure-Equipped Radios Only)
If a secure module is currently installed in the radio
being aligned, refer to the appendix at the rear of this
manual. Read section III, “Secure Alignment
Procedure”, before performing the transmit deviation
balance (compensation) procedure.
1. Press F4 to select the TRANSMIT DEVIATION BALANCE softpot.
The screen will indicate the transmit test frequencies to be used.
2. Begin with the lowest test frequency shown on the screen.
2.4 - 2.6
2.9 W (Max.)
22
3. Set the Test Box (RTX4005B) meter selector switch to the “MX
DISC” position, and inject an 80Hz tone at 100mVrms into the
AC/DC MTR port. Keep the ac voltmeter in parallel to ensure the
proper input signal level.
4. Press F6 to key the radio, and measure deviation. Record this
measurement.
5. Change the input tone to 3 kHz, 100mVrms and use the UP/
DOWN arrow keys to adjust the deviation to within ±2% of the
value recorded in step 4.
6. Change the input tone back to 80 Hz and measure the deviation.
7. Repeat steps 5 and 6 until the 3kHz tone deviation is within ±2%
of the 80Hz tone deviation.
8. Press F6 to dekey the radio, and press F8 to program the softpot
value. Press ENTER to move to next softpot value.
9. Repeat steps 3 through 8 for the remaining test frequencies.
10.Press F10 to return to the TRANSMIT menu.
NOTE:The step size change for step 5 is
approximately 2.5% per softpot value. This
adjustment should only be made to the 3kHz
deviation. Do not adjust the 80Hz deviation.
Transmit Deviation
Limit
1. Press F5 to select the TRANSMIT DEVIATION LIMIT softpot. The
screen will indicate the transmit test frequencies to be used.
2. Begin with the lowest test frequency shown on the screen.
3. With the meter selector switch (RTX4005B) set to MIC, inject a
1kHz tone on the AUDIO IN terminal on the test set, 80mVrms as
measured on the AC/DC MTR port.
4. Press F6 to key the radio, and use the UP/DOWN arrow keys to
adjust the deviation per the values shown in Table 16.
Table 16 Transmit Deviation Limit
BANDDeviation (KHz)
VHF/UHF/800 MHz4.30 - 4.60
900 MHz2.20 - 2.30
5. Press F6 to dekey the radio, and press F8 to program the softpot
value. Press ENTER to move to the next softpot value.
6. Repeat steps 3-5 for the remaining frequencies shown on the
screen.
Transmit Deviation
Limit Reference
7. Press F10 to return to the TRANSMIT menu.
NOTE:This procedure is required for VHF, UHF, and
800 MHz models with 20kHz channel spacing
and VHF and UHF models with 12.5kHz
channel spacing. This procedure is not
required for 900MHz models.
1. Press F6 to select the TRANSMIT DEVIATION LIMIT REFERENCE
softpot.
2. With the meter selector switch (RTX4005B) set to MIC, inject a
1kHz tone on the AUDIO IN terminal on the test set, 80mVrms as
measured on the AC/DC MTR port.
3. Press F6 to key the radio, and use the UP/DOWN arrow keys to
adjust the deviation per Table 17.
23
Table 17 Transmit Deviation Limit Reference
Channel SpacingDeviation (kHz)
20 KHz3.40 - 3.60
12.5 KHz2.20 - 2.30
4. Press F6 to dekey the radio, and press F8 to program the softpot
value.
5. Press F10 to return to the TRANSMIT menu.
VCO Crossover
Frequency
NOTE:This procedure is only required after the field
repair of a VHF or UHF VCO.
In order for a phase-locked-loop to tune very wide bandwidths, both
negative and positive control voltages (Vcntl) are required. This
procedure sets the crossover frequency at which the negative Vcntl
(or –Vee) switches from zero to negative.
Transceiver Board
Identification
VHF RadiosVHF transceiver board NUD7070 and NUD7085 (“C” and later) kits
include new VCO varactors, and are factory aligned with a new
transmit VCO crossover frequency of 164.850MHz.
Since the transmit crossover frequency has changed, whenever
transmit VCO crossover alignment (an RSS function) is performed,
circuit board identification will be important. The “C” kits can be
identified by the circuit board number 5511Y02 or 5511Y32 visible on
side 2 of the board, located along the circuit board edge just next to
crystal filter FL1. All future VHF transceiver boards will be in the
“5511Y” series.
Anytime a controller board or transceiver board is replaced in a radio,
it will be necessary to perform the RSS transmit VCO crossover
alignment, and check the transmit VCO crossover frequency. The RSS
s c r e e n f o r t h i s a l i g n m e n t w i l l s h o w a “ c u r r e n t v a l u e ” b o x
with a frequency already assigned, placed inside the box. When
performing transmit VCO crossover alignment, first check the
transceiver circuit board number. In a VHF radio:
24
• If the board number is any “5511Y” series number, other than
5511Y01 or 5511Y31, the transmit VCO crossover frequency in the
“current value” box should be 164.850MHz. If it is not, change it
to 164.850MHz.
• If the board number is 5511Y01, 5511Y31 or any other number
not in the 5511Y series, the transmit VCO crossover frequency in
the “current value” box should be 161.50500MHz. If it is not,
change it to 161.50500MHz.
VCO varactors (CR201, 202, and 203) in “C” and later kits are not
interchangeable with VCO varactors in earlier kits; Motorola parts and
part numbers are different. When replacing a VCO varactor, Identify
the transceiver board and order replacement parts from the applicable
parts list.
UHF, 403-470MHz RadiosUHF transceiver board (403 - 470MHz band split) NUE7231 and
NUE7240 (“C” and later) kits include new VCO varactors, and are
factory aligned with a new transmit VCO crossover frequency of
449.500MHz.
Since the transmit crossover frequency has changed, whenever
transmit VCO crossover alignment (an RSS function) is performed,
UHF band split and circuit board identification will be important.
• UHF band split can positively be determined by checking the
markings on the power amplifier shield. If the power amplifier
shield marking is 25U04 or 85Y10, then the transceiver is a 403 470MHz band split. If the power amplifier shield marking is 25U05
or 85Y11, then the transceiver is a 450 - 520MHz band split.
• The “C” kits can be identified by the circuit board number
4221J07 or 4221J37 visible on side 2 of the board, located along
the circuit board edge just next to crystal filter FL1. All future UHF
transceiver boards will be in the “4221J” series.
Anytime a controller board or transceiver board is replaced in a radio,
it will be necessary to perform the RSS transmit VCO crossover
alignment, and check the transmit VCO crossover frequency. The RSS
screen for this alignment will show a “current value” box
with a frequency already assigned, placed inside the box. When
performing transmit VCO crossover alignment, determine the UHF
transceiver band split, and then check the transceiver circuit board
number. In a UHF radio (403 - 470MHz range):
• If the board number is any “4221J” series number, other than
4221J01 thru 4221J06 or 4221J36, the transmit VCO crossover
frequency in the “current value” box should be 449.500MHz. If it
is not, change it to 449.500MHz.
• If the board number is 4221J01 thru 4221J06, 4221J36, or any
other number not in the 4221J series, the transmit VCO crossover
frequency in the “current value” box should be 438.025MHz. If it
is not, change it to 438.025MHz.
VCO varactors (CR201, 203, 207, 208, and 209) in “C” and later kits
are not interchangeable with VCO varactors in earlier kits; Motorola
parts and part numbers are different. When replacing a VCO varactor,
identify the UHF transceiver band split and the transceiver circuit
board number, and then order replacement parts from the applicable
parts list.
UHF, 450-520MHz RadiosUHF transceiver board (450 - 520MHz band split) NUE7232 and
NUE7241 (“C” and later) kits include new VCO varactors, and are
factory aligned with a new transmit VCO crossover frequency of
495.375MHz.
25
Since the transmit crossover frequency has changed, whenever
transmit VCO crossover alignment (an RSS function) is performed,
UHF band split and circuit board identification will be important.
• UHF band split can positively be determined by the markings on
the power amplifier shield. If the power amplifier shield marking
is 25U04 or 85Y10, then the transceiver is a 403 - 470MHz band
split. If the power amplifier shield marking is 25U05 or 85Y11,
then the transceiver is a 450 - 520MHz band split.
• The “C” kits can be identified by the circuit board number
4221J07 or 4221J37 visible on side 2 of the board, located along
the circuit board edge just next to crystal filter FL1. All future UHF
transceiver boards will be in the “4221J” series.
Anytime a controller board or transceiver board is replaced in a radio,
it will be necessary to perform the RSS transmit VCO crossover
alignment, and check the transmit VCO crossover frequency. The RSS
screen for this alignment will show a “current value” box
with a frequency already assigned, placed inside the box. When
performing transmit VCO crossover alignment, determine the UHF
transceiver band split, and then check the transceiver circuit board
number. In a UHF radio (450 - 520MHz range):
• If the board number is any “4221J” series number, other than
4221J01 thru 4221J06 or 4221J36, the transmit VCO crossover
frequency in the “current value” box should be 495.375MHz. If it
is not, change it to 495.375MHz.
TX VCO Crossover
Procedure
• If the board number is 5521Y03, the transmit VCO crossover
frequency in the “current value” box should be 486.025MHz. If it
is not, change it to 486.025MHz.
VCO varactors (CR201, 203, 207, 208, and 209) in “C” and later kits
are not interchangeable with VCO varactors in earlier kits; Motorola
parts and part numbers are different. When replacing a VCO varactor,
identify the UHF transceiver band split and the transceiver circuit
board number, and then order replacement parts from the applicable
parts list.
1. From the SERVICE menu, press F2 to select TRANSMITTER
alignment.
2. Press F7 to select the TRANSMIT VCO CROSSOVER softpot. The
screen will indicate the transmit test frequency to be used.
3. Connect a dc voltmeter capable of 1mV resolution to test point 5
(TP5), which is accessible through a hole in the bottom side VCO
circuitry shield.
4. Beginning with the default softpot frequency of line 2, press F6 to
key the transmitter, and adjust the UP/DOWN arrow keys until the
voltage reading at TP5 is 3.0 ±0.1 volts. The frequency will
increment in steps of 50kHz.
26
5. Press F6 again to dekey the transmitter, and press F8 to program
the softpot value.
6. Press F10 twice to return to the SERVICE menu.
RX VCO Crossover
Procedure
1. From the SERVICE menu, press F3 to select RECEIVER alignment.
2. Press F5 to select the RECEIVE VCO CROSSOVER softpot. The
screen will indicate the receive test frequency to be used.
3. Connect a dc voltmeter capable of 1mVolt resolution to test point
5 (TP5), which is accessible through a hole in the bottom side VCO
circuitry shield.
4. Beginning with the default softpot frequency of line 2, adjust the
UP/DOWN arrow keys until the voltage reading at TP5 is
3.0 ±0.1volts.
5. Press F8 to program the softpot value.
6. Press F10 twice to return to the SERVICE menu.
Signalling DeviationTransmit deviation balance compensation and transmit deviation
limit adjustments should be completed before signalling deviation is
adjusted.
DTMF Tuning1. From the SERVICE menu, press F4 to select SIGNALLING
alignment.
2. Press F2 to select the DTMF softpot.
3. Press F6 to key the radio on the test frequency. The screen will
indicate that the radio is transmitting.
4. Measure the DTMF deviation on your service monitor.
5. Use the UP/DOWN arrow keys to adjust the DTMF deviation per
Table 18.
6. Press F6 again to dekey the radio.
7. Press F8 to program the softpot value; press F10 to return to the
SIGNALLING menu.
High Speed Signalling1. From the SERVICE menu, press F4 to select SIGNALLING
alignment.
2. Press F3 to select the TRUNKING HIGH SPEED softpot.
3. Press F6 to key the radio on the test frequency. The screen will
indicate that the radio is transmitting.
4. Measure the TRUNKING HIGH SPEED deviation on your service
monitor.
5. Use the UP/DOWN arrow keys to adjust the TRUNKING HIGH
SPEED deviation per Table 18.
7. Press F8 to program the softpot value; press F10 to return to the
SIGNALLING menu.
MDC 1200 1. From the SERVICE menu, press F4 to select SIGNALLING
alignment.
2. Press F4 to select the MDC softpot.
3. Press F6 to key the radio on the test frequency. The screen will
indicate that the radio is transmitting.
4. Measure the MDC deviation on your service monitor.
5. Use the UP/DOWN arrow keys to adjust the MDC deviation per
Table 18.
Single
Tone
Alignment Procedure
Conclusion
6. Press F6 again to dekey the radio.
7. Press F8 to program the softpot value; press F10 twice to return to
the SERVICE menu.
The radio alignment procedure is now complete; the radio may be
disconnected and returned to service.
28
Disassembly and
Reassembly6
THIS RADIO CONTAINS STATIC-SENSITIVE
DEVICES. DO NOT OPEN THE RADIO UNLESS
!
PROPERLY GROUNDED. TAKE THE FOLLOWING
PRECAUTIONS WHEN WORKING ON THIS UNIT.
C a u t i o n
1. Store and transport all complementary metal-
2. Ground the working surface of the service
3. Wear a conductive wrist strap in series with a
4. Do not wear nylon clothing while handling
5. Neither insert nor remove CMOS devices
oxide semiconductor (CMOS) devices in
conductive material so that all exposed leads
are shorted together. Do not insert CMOS
devices into conventional plastic “snow”
trays used for storage and transportation of
other semiconductor devices.
bench to protect the CMOS device. We
recommend using the Motorola Static
Protection Assembly (part number
0180386A82), which includes a wrist strap,
two ground cords, a table mat, and a floor
mat.
100k resistor to ground. Replacement wrist
straps that connect to the bench top covering
are Motorola part number RSX-4015.
CMOS devices.
with power applied. Check all power supplies
that are to be used for testing CMOS devices
to be certain that there are no voltage
transients present.
6. When straightening CMOS pins, provide
ground straps for apparatus used.
7. When soldering, use a grounded soldering
iron.
8. If at all possible, handle CMOS devices by the
package and not by the leads. Prior to
touching the unit, touch an electrical ground
to remove any static charge that you may
have accumulated. The package and substrate
may be electrically common. If so, the
reaction of a discharge to the case would
cause the same damage as touching the leads.
29
GeneralSince this product disassembles and reassembles without the use of
any screws, it is important for the technician to pay particular
attention to the snaps and tabs, and how parts align with each other.
NOTE:In the disassembly/reassembly procedure, the
numbers in parentheses refer to call-out
numbers in the referenced figures.
Disassembly to Board
Level
1. Turn off the radio.
2. Remove the battery (see Figure 4).
a. Hold the radio such that the battery is tilted down.
b. Press down on the two battery-release levers.
c. With the release levers pulled down, the top of the battery
will fall away from the radio.
d. Remove the battery completely from the radio.
A
30
Figure 4 Removing the Battery
3. Loosen the antenna by turning it in a counterclockwise direction,
and remove it from the radio.
4. Remove the volume on/off knob and the channel selector switch
knob by pulling them off their respective switch shafts.
NOTE:Both knobs slide on and off but fit very snug
on their respective switch shafts. A small flat
blade screwdriver may be necessary to help pry
the knobs loose. Take care not to mar the
surrounding radio surface.
5. Separate the front cover assembly from the internal electronics
(chassis) (see Figure 5).
a. Insert the chassis/front cover separation tool (Motorola part
no. 6680334E07) or like instrument in the slotted area at the
bottom center of the radio. Take care not to mar the O-ring
sealing area on the housing.
MAEPF-22524-A
Small Flat Blade
Screwdriver
Chassis
Assembly
Front Cover
Assembly
MAEPF-22571-O
Figure 5 Separating the Cover From the Chassis
b. Pry the bottom of the chassis free from the cover by pushing
the separation tool down and rotating the handle of the
separation tool over and behind the base of the radio. This
prying action forces the thin inner plastic wall toward the
base of the radio, which releases the two chassis base tabs.
NOTE:A flexible ribbon cable (front cover/display
flex), which connects to the front cover
assembly and the chassis, keeps you from
completely separating the two units.
c. Lay the chassis down, and rotate the front cover back and
partially away from the chassis (see Figure 6).
31
Unit with
early Front Shield
Unit with
latest Front Shield
Chassis
Assembly
Front Cover
Assembly
Front Cover/
Display Flex
Front Cover
Assembly
Front Cover/
Display Flex
MAEPF-27016-O
MAEPF-22572-O
Figure 6 Rotating the Front Cover
TECHNICAL PUBLICATIONS DEPT.
Chassis
Assembly
6. Disconnect the front cover display flex from the connector on the
chassis.
NOTE:A special locking connector secures the flex to
the chassis (see Figure 7).
Top Corner
Pry Here
Top Corner
Pry Here
1/8”
Flex Locked
in Connector
Flex Released
From Connector
Figure 7 Disconnecting the Flex
a. Use the flex connector opening tool, large curved end
(Motorola part no. 6680334E08), or like instrument to help
raise the sliding portion of the connector approximately 1/8
of an inch from its seated position. A slight prying action will
achieve the best results for unlocking the connector.
b. Remove the flex from the chassis connector.
7. Remove the contoured O-ring/antenna bushing seal from the
chassis.
8. Disconnect the controls flex from the connector on the controller
board by following the procedure in step 6a and 6b.
32
NOTE: A large portion of the controls flex is attached to the
g
large metal shield (front shield) with adhesive. Do not
remove the controls flex from the front shield.
9. As a unit, separate the control top, the front shield, and the
controls flex from the chassis and circuit boards (see Figure 8).
NOTE: Three locking clips (four tabs on early front shield)
secure the front shield to the chassis and hold the RF
board and the controller board in the chassis.
Unit with
early Front Shield
Control
Top
Recessed
Area for
Pryin
Loose
Four (4)
Large Tabs
PTT Switch
Area
Unit with
latest Front Shield
Control
Front
Shield
Controls
Flex
MAEPF-22574-A
Top
Recessed
Area for
Prying Loose
Figure 8 Separating Control Top From the Chassis
a. Loosen the front shield by prying each of the three clips (four
tabs on early front shield) away from the chassis. Be careful
not to pry the clips/tabs any more than is necessary to free
them from their respective retaining slots. To completely
loosen the shield from the chassis, a slight lifting and
clockwise twisting action may be required.
b. Insert a small, flat-blade screwdriver in the recessed area of
the control top and pry the control top slightly away from the
chassis.
Three (3)
Locking Clips
PTT Switch
Area
Front
Shield
Controls
Flex
MAEPF-27017-O
c. Completely remove the control top/front shield/controls flex
unit from the chassis.
10.Carefully remove the RF board and the controller board from the
chassis.
33
NOTE:The RF board and the controller board are
connected together with a stiff connector strip
(P301/P704. See Figure 9.
Controller
Board
RF Board
Connector
Chassis
Strip
MAEPF-22575-A
Figure 9 Removing the RF and Controller Boards
Disassembly of
Control Top
1. Remove the rubber controls seal from the control top.
2. Turn the control top such that the grey switch housing cover is
facing up.
a. Five retaining clips hold the switch housing cover to the
switch housing. Clips 1, 2, and 3 are important during
disassembly (see Figure 10).
NOTE:To perform step 2b, two tools will be required;
your thumbnail or small, flat-blade
screwdriver, and a pen, pencil, or another
small, flat-blade screwdriver.
b. Using your thumbnail or small, flat-blade screwdriver, lift the
tab that covers the base of the LED approximately 1/16 of an
inch from its seated position. While applying constant lifting
pressure there, (in order) release clips 1, 2, and 3 with the
other tool.
Clip 5
Clip 4
Switch Housing
Cover
Clip 1
34
Switch
Housing
Clip 3
Clip 2
Figure 10 Switch Housing Retaining Clips
Lift
Tab
MAEPF-22576-O
c. The cover will pop loose from the switch housing.
3. Push the three switches and the LED out of the switch housing.
4. The remainder of the controls flex is attached to the switch
housing with adhesive. Do not remove the flex from the switch
housing unless it is absolutely necessary.
Disassembly of Front
Cover Assembly
1. On top display model radios only, release the display board by
using a “press and pull” action on the top two corners of the
display board. Press down on the two top corners of the display
board and pull the top of the board away from the two corner
retaining tabs. The display board will free itself from the retaining
tabs and two retaining slots in the front cover housing.
2. Remove the wedge connector (part of the front cover flex, located
behind the universal connector), by sliding it out of the plastic
rails that hold it in place. A slight prying action, alternating back
and forth on the bottom corners of the connector, achieves the
best results. Be careful not to damage the spring contacts on the
wedge.
3. Remove the speaker retainer bracket, speaker, microphone, and
front cover flex from the front cover housing (see Figure 11).
Small Flat Blade
Screwdriver
Speaker
Retainer Bracket
Retaining
Tab
Sound
Dampening
Pad
Front Cover
Assembly
Figure 11 Removing the Speaker and Flex From the Front Cover
MAEPF-22577-B
NOTE:The speaker and front cover flex are held in
position with a three-leg retainer bracket. The
legs of the bracket are secured by slots in the
front cover. When removing the retainer
bracket, use caution not to damage the speaker.
a. Disengage the retainer bracket leg that points toward the
bottom of the front cover from its retaining tab.
(1) Insert a small, flat-blade screwdriver under the base of the
bracket leg near the ring.
(2) Lift the bracket leg until it pops loose from under its
retaining tab.
b. Lift the freed leg of the retainer bracket and use it to pull the
remaining two legs of the bracket out and away from their
respective slots in the front cover housing.
c. Pull the rubber microphone boot, containing the
microphone, from its seated position. Unless you are
35
replacing the microphone, leave the microphone in the boot.
4. Remove, if necessary, and replace the sound dampening pad.
5. As necessary, replace the speaker and/or microphone while out of
the front cover housing.
NOTE:If the microphone is replaced, ensure that the
microphone is reinstalled back into the rubber
boot with the microphone port facing the
round hole at the bottom of the boot.
6. On front display model radios only, notice that the keypad/display
board is secured to the front cover housing using six tabs, three
small tabs on one side and three larger tabs on the universal
connector side. Remove the keypad/display board by inserting a
small flat-blade screwdriver in the circuit board slot provided (slot
nearest the top retaining tab on the universal connector side of the
radio, see Figure 12). A slight prying action will release the keypad/
display board. If applicable, remove the rubber keypad.
NOTE:Be careful not to mar the front cover housing
O-ring sealing area. Doing so will compromise
the sealing integrity of the radio.
Keypad/Display
Board
Six Retaining
Insert Screwdriver
Blade in This Slot
Universal
Connector
Tabs
Figure 12 Removing the Keypad/Display Board
ReassemblyReassembly is the reverse of disassembly. Some suggestions and
illustrations are provided to help you more easily reassemble the radio.
Keypad/Display Board
(front display model
radios only)
1. If applicable, replace the rubber keypad.
2. Place the keypad/display board into the front cover housing at an
angle such that the three small slots on the edge of the board slide
under the three mating retaining tabs. Ensure that the board slides
under the tabs.
3. Near the three larger slots on the other side of the board, use finger
pressure to push and press that side of the board down until it
snaps into place under the three large retaining tabs.
Front Cover Assembly1. Place the speaker and microphone into their respective positions
in the front cover. Make sure that the speaker is seated properly in
the recessed area provided.
36
2. Press the rubber microphone boot into its respective recessed area
in the front cover housing. The little rubber flap in the back of the
rubber boot should fold up to cover the microphone insertion
opening.
3. Reinstall the speaker retainer bracket (see Figure 13).
2. Grasp Clip
Here and Here,Then Push Leg Into Slot
1. Inset Legs
Into Slots
Figure 13 Reinstalling the Speaker Retainer Bracket
MAEPF-22578-A
a. Position the spring bracket over the speaker, and toward the
top of the front cover housing; insert the appropriate two legs
of the bracket into their respective slots.
b. Grasp the center portion of the spring bracket (ring area) with
thumb and forefinger.
c. While holding the ring area of the spring bracket at
approximately the same height as the speaker’s base, push the
remaining leg down and into its respective slot.
4. Orient the wedge connector so that its gold contacts face the gold
contacts of the housing. Align the wedge connector with the
respective slots in the housing, and slide the connector down into
place. Ensure that the wedge connector is fully seated into
position.
37
5. On top display model radios only, seat the display board by
inserting the two display board tabs into their mating slots in the
front cover housing. Push the top of the display board toward the
top of the radio until the front cover housing retaining tabs
engage the display board and secure it into position.
ChassisInside of the chassis where the RF board fits is a protruding block that
functions as the PA heatsink. To help provide maximum heat transfer,
ensure that the PA heatsink block (top surface) includes a thermal pad
(Motorola part number 7505922Z01) adhered to it.
Place the RF board and controller board into the chassis. Ensure that
the plastic cover that more rigidly holds the two boards together is
snapped into place.
Control Top1. Reinstall the switches and LED into the switch housing.
2. Reinstall the switch housing cover onto the switch housing by
sliding tabs 4 and 5 of the cover into their respective clips on the
housing. Then press down on the cover to engage tabs 1, 2, and 3.
Control Top/
Front Shield/
Controls Flex
as a Unit to Chassis
1. Slide the control top into the appropriate position in the chassis,
and place the front shield into position over the chassis and circuit
boards.
2. Check to see that the three clip recesses (four large tabs on early
front shield) of the front shield are aligned with the respective
slots on the sides of the chassis, then snap the front shield in
place. Ensure that the shield is fully seated, especially in the PTT
switch area.
3. a. Units using early front shield with tabs (no separate clips), skip step three (3); proceed to step four (4).
b. Units using latest front shield with separate clips – Insert clip 1
(Motorola part number 4285350C01) onto front shield by
orienting clip stamped “1” with front shield recess stamped “1”.
Insert the narrow hook end of the clip into the slot of the front
shield. While keeping the clip hook in to the front shield slot,
press the bent portion of the clip toward the front shield until it
snaps into place. The two remaining clips (Motorola part number
4285350C02) are stamped “2”. Insert these clips into the recessed
areas on the front shield stamped “2”, and snap them into place as
was done with clip stamped “1”.
4. Slide the connector end of the controls flex into the special
locking connector mounted on the control board. Ensure that the
flex is fully seated into the board connector and secure the
connection.
38
NOTE:View the flex connection at a slight angle from
the bottom of the radio (see Figure 14). If the
flex is fully seated, the orange circuit plating
will be parallel with the connector top surface
and three reliefs in the plating will make the
flex plating appear to be separated. If the
orange plating of the flex is not parallel with
the connector's top surface, or the three reliefs
are raised enough to see plating under them,
then the flex is not fully seated.
Front Cover Assembly to
Chassis
Unit with
early Front Shield
Flex Not Fully Seated
in Connector
Misaligned
Flex Fully Seated
in Connector
Plating
Reliefs
MAEPF-22579-A
Figure 14 Seating the Flex
5. Reinstall the rubber controls top seal on the control top.
NOTE:Two tabs are provided in the emergency button
area to help hold the seal in place.
1. Install the contoured O-ring/antenna bushing seal around the
antenna and in the groove provided (see Figure 15).
Unit with
latest Front Shield
Contoured O-ring/
Antenna Bushing Seal
Figure 15 Installing the O-Ring/Antenna Bushing Seal
2. Orient the front cover assembly with the chassis, and insert the
front cover/display flex connector into the locking connector of
the controller board (refer back to Figure 6). Secure the
connection. View the flex connection at a slight angle from the
top of the radio and ensure that the flex connector is fully seated
into the locking connector as illustrated in Figure 7.
3. Check to make sure that the O-ring is in place, and slide the
chassis (control top first) into the front cover assembly. Check to
ensure that the orange emergency button seal slides into position
freely.
NOTE:When performing the next part of this step,
pay particular attention to the O-ring near the
bottom of the radio to ensure that it does not
raise up and get pinched between the front
Contoured O-ring/
Antenna Bushing Seal
MAEPF-27018-O
39
cover clip and the chassis.With the top of the
chassis fully seated, lower the bottom of the
chassis and press it into the front cover
assembly until it snaps into place.
4. Check the emergency button again. If it is cocked to one side,
repositioning it will be necessary.
Knobs, Antenna, and
Battery
1. Reinstall the switch knobs and antenna; the shorter knob with the
volume on/off switch, the taller knob with the channel selector
switch.
2. Reinstall the battery.
40
Maintenance
7
IntroductionThis section of the manual describes preventive maintenance, safe
handling of CMOS devices, and repair procedures and techniques.
Each of these topics provides information vital to the successful
operation and maintenance of your radio.
Preventive
Maintenance
In order to avoid operating outside the limits set by the FCC, it is
recommended that the reference oscillator of the HT 1000, JT 1000,
MT 2000, MTS 2000, and MTX radio be aligned every time the radio is
disassembled, or once a year, whichever comes first. Periodic visual
inspection and cleaning are also recommended.
InspectionCheck that the external surfaces of the radio are clean, and that all
external controls and switches are functional. A detailed inspection of
the interior electronic circuitry is not needed or desired.
CleaningThe following procedures describe the recommended cleaning agents
and the methods to be used when cleaning the external and internal
surfaces of the radio. External surfaces include the front cover, chassis
(rear cover), and battery case. These surfaces should be cleaned
whenever a periodic visual inspection reveals the presence of smudges,
grease, and/or grime. Internal surfaces should be cleaned only when
the radio is disassembled for servicing or repair.
The only recommended agent for cleaning the external radio surfaces is a
0.5% solution of a mild dishwashing detergent, such as JOY®, in water.
The only factory recommended liquid for cleaning the printed circuit
boards and their components is isopropyl alcohol (70% by volume).
Cleaning External Plastic
Surfaces
Cleaning Circuit Boards and
Components
The effects of certain chemicals and their vapors
!
can have harmful results on certain plastics.
Aerosol sprays, tuner cleaners, and other
chemicals should be avoided.
C a u t i o n
The detergent-water solution should be applied sparingly with a stiff,
non-metallic, short-bristled brush to work all loose dirt away from the
radio. A soft, absorbent, lintless cloth or tissue should be used to
remove the solution and dry the radio. Make sure that no water
remains entrapped near the connectors, cracks, or crevices.
Isopropyl alcohol may be applied with a stiff, non-metallic, shortbristled brush to dislodge embedded or caked materials located in
hard-to-reach areas. The brush stroke should direct the dislodged
material out and away from the inside of the radio.
41
Alcohol is a high-wetting liquid and can carry contamination into
unwanted places if an excessive quantity is used. Make sure that
controls or tunable components are not soaked with the liquid. Do not
use high-pressure air to hasten the drying process, since this could
cause the liquid to puddle and collect in unwanted places.
Upon completion of the cleaning process, use a soft, absorbent, lintless
cloth to dry the area. Do not brush or apply any isopropyl alcohol to
the frame, front cover, or back cover.
NOTE:Always use a fresh supply of alcohol and a
clean container to prevent contamination by
dissolved material (from previous usage).
Safe Handling of
CMOS Devices
Repair Procedures
and Techniques
General
Parts Replacement and
Substitution
Complementary metal-oxide semiconductor (CMOS) devices are used
in this family of radios. While the benefits of CMOS are many, their
characteristics make them susceptible to damage by electrostatic or
high voltage charges. Damage can be latent, resulting in failures
occurring weeks or months later. Therefore, you must take special
precautions to prevent device damage during disassembly,
troubleshooting, and repair. Handling precautions are mandatory for
CMOS circuits, and are especially important in low humidity
conditions. DO NOT attempt to disassemble the radio without first
referring to the CMOS CAUTION paragraph in the Disassembly and
Reassembly section of the manual.
Refer to the Disassembly and Reassembly section of the manual for
pertinent information prior to replacing and substituting parts.
Special care should be taken to be as certain as possible that a
suspected component is actually the one at fault. This special care will
eliminate unnecessary unsoldering and removal of parts, which could
damage or weaken other components or the printed circuit board
itself.
When damaged parts are replaced, identical parts should be used. If
the identical replacement component is not locally available, check
the parts list for the proper Motorola part number and order the
component from the nearest Motorola Communications Parts office
listed in the “Replacement Parts Ordering” section of this manual.
Rigid Circuit BoardsThis family of radios uses bonded, multi-layer, printed circuit boards.
Since the inner layers are not accessible, some special considerations
are required when soldering and unsoldering components. The
printed-through holes may interconnect multiple layers of the printed
circuit. Therefore, care should be exercised to avoid pulling the plated
circuit out of the hole.
When soldering near the module socket pins, use care to avoid
accidentally getting solder in the socket. Also, be careful not to form
solder bridges between the module socket pins. Closely examine your
42
work for shorts due to solder bridges. When removing modules with
metal enclosures, be sure to desolder the enclosure ground tabs as well
as the module pins.
Flexible CircuitsThe flexible circuits are made from a different material than the rigid
boards, and different techniques must be used when soldering.
Excessive prolonged heat on the flexible circuit can damage the
material. Avoid excessive heat and excessive bending. For parts
replacement, use the ST-1087 Temperature-Controlled Solder Station
with a 600 or 700 degree tip, and use small diameter solder such as ST-
633. The smaller size solder will melt faster and require less heat being
applied to the circuit.
To replace a component on a flexible circuit, grasp the edge of the
flexible circuit with seizers (hemostats) near the part to be removed,
and pull gently. Apply the tip of the soldering iron to the component
connections while pulling with the seizers. Do not attempt to puddle
out components. Prolonged application of heat may damage the
flexible circuit.
SpecificDuring all repair procedures, heating neighboring components can be
minimized by:
• using upper heat only.
Strip Connector (P301/
P704)
• using the correct size heat-focus head, approximately the same size
as the carrier being replaced.
• keeping the heat focus head approximately 1/8” above the printed
circuit board when removing or replacing the device.
If neighboring PBGA components are heated
!
above 365 degrees F. (185 degrees C.), they will
suffer die-bond delamination and possible
“popcorn” failure.
C a u t i o n
On the latest version HT 1000, JT 1000, MT 2000, MTS 2000, and MTX
series radios, a strip connector, two female connectors and a strain
relief electrically connect the RF board with the controller board. On
earlier versions of these radios, the RF board and controller board were
connected using a jumper flex that soldered directly to the circuit
board solder pads.
An interconnect kit, REX4350A, is available to retrofit earlier version
jumper-flex radios with the later version strip connector parts. The
REX4350A kit includes the following items:
• CONNECTOR, Female (J301) 0905461X01
• CONNECTOR, Female (J704) 0905461X01
• CONNECTOR, Male (P301/P704) 0905461X01
• STRAIN RELIEF 4205507X01
• INSTRUCTIONS 6880309F14
43
Jumper Flex (on radios
shipped prior to 7/94)
Jumper flexes are not available. They are replaced with connectors as
described in paragraph “a” of this section. If the jumper flex needs to
be replaced, order Interconnect Kit REX4350A. The retrofit kit includes
all of the parts required and detailed instructions on the removal of the
old jumper flex, and the installation of the new connector
arrangement.
RF Switch (S101):Refer to the applicable exploded view and to your radio's RF board
(antenna contact area) to locate the RF switch components.
NOTE:The RF switch spring and the RF switch piston
must be ordered separately.
To Remove the RF Switch:1. On VHF and UHF radios, unsolder the two tabs of the RF switch
bracket that secure the RF switch to the RF board. On 800MHz and
900MHz radios, use a #2 slotted screwdriver to straighten the two
tabs of the RF switch bracket that wrap around the RF board. Use
your forefinger to hold the RF switch bracket to the RF board while
straightening the tabs to avoid lifting the solder tabs on the
opposite end of the RF switch bracket.
2. Refer to Figure 16 and use a small heat-focus head to distribute
heat over the area occupied by the three solder tabs until the
solder softens.
3 Solder
Tabs
Figure 16 Solder Tabs
3. Carefully lift the RF switch assembly away from the rf board.
Notice that the RF switch circuit board remains attached (soldered)
to the RF board.
4. Using the same heat-focus head as in steps (2) and (3), unsolder
the RF switch circuit board, and remove it from the RF board using
forceps.
5. In the RF switch circuit board area, reflow all the solder pad areas
on the main RF board such that similarly shaped pads have
uniform solder heights. Add or remove solder as required. Clean
the RF board thoroughly. Then swab on a minimum amount of
flux to each of the solder pads.
To Replace the RF Switch:1. Place the RF switch assembly on the RF main board and gently
heat. Visually inspect to make sure no flux migrated onto the gold
plated areas of the RF switch board. The guide pins should provide
self alignment between the two circuit boards. Visually inspect the
44
plastic switch housing to ensure that it has not warped due to
overheating.
2. While holding the RF switch bracket firmly against the RF board:
• VHF and UHF radios - solder the two leads of the housing to the
solder pads on the RF board.
• 800MHZ and 900MHz radios - bend the two tabs around the side
of the RF board as close to the board edge as possible to hold the
bracket down tightly.
3. Insert the new RF switch spring and RF switch piston into the RF
switch assembly. The contacts of the piston should be facing the
gold-plated pads of the RF switch board. Once the spring and
piston are inserted into the RF switch, they will be retained by the
switch.
Chip ComponentsUse either the RLN-4062 Hot-Air Repair Station or the Motorola
0180381B45 Repair Station for chip component replacement. When
using the 0180381B45 Repair Station, select the TJ-65 mini-thermojet
hand piece. On either unit, adjust the temperature control to 700
degrees F. (370 degrees C), and adjust the airflow to a minimum
setting. Airflow can vary due to component density.
1. To remove a chip component, select a hot- air hand piece and
position the nozzle of the hand piece approximately 1/8” (0.3cm)
above the component to be removed. Begin applying the hot air.
Once the solder reflows, remove the component using a pair of
tweezers. Using solder wick and a soldering iron or a power
desoldering station, remove the excess solder from the pads.
Plastic-Ball Grid-Array
(PBGA), Over-Molded PadArray Carrier (OMPAC), and
Glob Top Components
2. To replace a chip component using a soldering iron, select the
appropriate micro-tipped soldering iron and apply fresh solder to
one of the solder pads. Using a pair of tweezers, position the new
chip component in place while heating the fresh solder. Once
solder wicks onto the new component, remove the heat from the
solder. Heat the remaining pad with the soldering iron and apply
solder until it wicks to the component. If necessary, touch up the
first side. All solder joints should be smooth and shiny.
3. To replace a chip component using hot air, select the hot-air hand
piece and reflow the solder on the solder pads to smooth it. Apply
a drop of solder paste flux to each pad. Using a pair of tweezers,
position the new component in place. Position the hot-air hand
piece approximately 1/8” (0.3cm) above the component and begin
applying heat. Once the solder wicks to the component, remove
the heat and inspect the repair. All joints should be smooth and
shiny.
The term Plastic-Ball Grid-Array (PBGA) will be used to describe most
of this products type of modules. PBGA modules may be the
construction of an Over-Molded Pad-Array Carrier (OMPAC)
component or “Glob Top” component. A U204 synthesizer
component in one radio may be an OMPAC and the same U204
synthesizer in another radio may be a Glob Top. The two components
look a little different, but are electrically the same and are
interchangeable.
45
!
C a u t i o n
If neighboring PBGA components are heated
!
C a u t i o n
above 365 degrees F. (185 degrees C.), they will
suffer die-bond delamination and possible
“popcorn” failure. To prevent this delamination
problem, circuit boards to be repaired must be
baked in an oven for eight hours at 260 degrees F.
(125 degrees C.) prior to solder repairs.
All pad-array carriers in these radios, except for
the IF IC (U3), are PBGA components. Prior to use,
all PBGA components must be kept in the sealed
bag (with moisture-indicator card) as supplied by
the Motorola Parts Department. Once the sealed
bag is opened and/or the PBGA component
subjected to ambient humidity (for an unknown
amount of time or for more than 96 hours) then
that PBGA component must be baked in an oven
for at least eight hours at 260 degrees F. (125
degrees C.)
During all repair procedures, heating neighboring components can be
minimized by:
• using upper heat only.
• using the correct size heat-focus head, approximately the same size
as the carrier being replaced.
• keeping the heat focus head approximately 1/8”-1/4” (0.3cm-
0.6cm) above the printed circuit board when removing or
replacing the device.
To Remove a PBGA Component, select the R-1319 Rework Station and the appropriate heat- focus head
(approximately the same size as the PBGA. Attach the heat-focus head
to the chimney heater. Adjust the temperature control to
approximately 415 degrees F (215 degrees C); 445 degrees F (230
degrees C) maximum. Apply the solder paste flux around the edge of
the PBGA. Place the circuit board in the circuit board holder, and
position the PBGA component under the heat-focus head. Lower the
vacuum tip and attach it to the PBGA component by turning on the
vacuum pump. Lower the heat-focus head until it is approximately 1/
8”-1/4” (0.3cm-0.6cm) above the carrier. Turn on the heater and wait
until the PBGA component lifts off the circuit board. Once the part is
off, grab it with a pair of tweezers and turn off the vacuum pump.
Remove the circuit board from the R-1319’s circuit board holder.
46
The application of heat to the PBGA device,
beginning at ambient air temperature and
!
C a u t i o n
ending with the PBGA component lifting from
the circuit board, should take longer than 60
seconds. If the PBGA component lifts from the
circuit board earlier than 60 seconds:
• check the temperature control setting on
• lift the heat-focus head an additional 1/8”
• check the circuit board plating for possible
the rework station, and if OK
from nominal setting, and
damage.
To Replace an PBGA component,
the solder pads on the board must first be cleaned of all solder to
ensure alignment of the new chip carrier. Prepare the site by using
solder wick and a soldering iron to remove all solder from the solder
pads on the circuit board. If a power desoldering tool is available, it can
be used instead of the solder wick. Clean the solder pads with alcohol
and a small brush. Dry and inspect. Ensure that all solder is removed.
Once the preparation is complete, place the circuit board back in the
circuit board holder. Add solder paste flux in the trench of the flux
block and spread it using a one-inch putty knife. Flux the PBGA
component by placing it in the trench of the flux block. Once the flux
is applied, place the PBGA component on the circuit board, making
certain that it is oriented correctly on the board. Position the heatfocus head over the PBGA component and lower it to approximately
1/8”-1/4” (0.3cm-0.6cm) over the carrier. Using the same heat setting
used to remove the PBGA component, turn on the heater and wait for
the carrier to reflow (heating and reflow should take longer than 60
seconds).Watch the PBGA component reflow and note that when a
proper reflow has taken place, the PBGA component will drop (usually
one side, then the other). The end result is that both sides have
reflowed, and the PBGA component is sitting parallel to the circuit
board.
Once the carrier reflows, raise the heat-focus head and wait
approximately one minute for the part to cool. Remove the circuit
board and inspect the repair. No cleaning should be necessary.
Thin Small Outline Package
(TSOP) Components
Removing and Replacing a TSOP
Component:
will be done with the R-1319, using the same procedure used to
remove and replace an PBGA component.
Place the circuit board in the circuit board holder. Select the proper
heat focus head and attach it to the heater chimney. Position the TSOP
component under the heat-focus head. Lower the vacuum tip and
attach it to the component by turning on the vacuum pump. Lower
the focus head until it is approximately 1/8”-1/4” (0.3cm-0.6cm)
above the component. Turn on the heater and wait until the TSOP lifts
off the circuit board.
47
Shields
Once the part is off, turn off the heat, grab the part with a pair of
tweezers, and turn off the vacuum pump. Prepare the circuit board for
the new component by applying solder paste flux to the solder pads.
Position the circuit board under the heat-focus head, lower the head
to approximately 1/8”-1/4” (0.3cm-0.6cm) above the board, and turn
on the heat. When the solder left behind on the pads reflows, turn off
the heat and raise the heat-focus head. Remove the circuit board from
the holder and inspect the pads to ensure that the solder has flattened
out and that there are no solder shorts. Clean the area with alcohol
and a small brush.
Once the preparation is complete, place the circuit board back in the
circuit board holder. Add solder paste flux to the solder pads and place
the new component on the circuit board. Position the heat-focus head
over the component and lower it to approximately 1/8”-1/4” (0.3cm-
0.6cm) above the carrier. Turn on the heater and wait for the
component to reflow.
Once the component reflows, raise the heat-focus head and wait
approximately one minute for the part to cool. Remove the circuit
board and inspect the repair. No cleaning should be necessary.
Removing and Replacing the
Shields:
will be done with the R-1319, using the same procedure used to
remove and replace TSOP and PBGA components.
Place the circuit board in the circuit board holder. Select the proper
heat focus head and attach it to the heater chimney. Add solder paste
flux around the base of the shield. Position the shield under the heatfocus head. Lower the vacuum tip and attach it to the shield by
turning on the vacuum pump. Lower the focus head until it is
approximately 1/8”-1/4” (0.3cm-0.6cm) above the shield. Turn on the
heater and wait until the shield lifts off the circuit board. Once the
shield is off, turn off the heat, grab the part with a pair of tweezers, and
turn off the vacuum pump. Remove the circuit board from the circuit
board holder.
To replace the shield, add solder to the shield if necessary, using a
micro-tipped soldering iron. Next, rub the soldering iron tip along the
edge of the shield to smooth out any excess solder. Use solder wick and
a soldering iron to remove excess solder from the solder pads on the
circuit board. Place the circuit board back in the circuit board holder.
Place the shield on the circuit board using a pair of tweezers. Position
the heat-focus head over the shield and lower it to approximately 1/
8”-1/4” (0.3cm-0.6cm) above the shield. Turn on the heater and wait
for the solder to reflow.
Once complete, turn off the heat, raise the heat-focus head, and wait
approximately one minute for the part to cool. Remove the circuit
board and inspect the repair. No cleaning should be necessary.
RF PA (U105)The procedure for removing and replacing the RF PA is very similar to
the procedure for removing and replacing an PBGA or a TSOP
component. But because the device is large, extra heating time is
required to flow the pads. And as a result, neighboring components
(especially those on the opposite side of the circuit board) will heat,
48
reflow, and may inadvertently move. Be careful when performing the
following procedure.
Refer to Figure 17 for RF PA nomenclature.
PA Cover
Leads
Slab
Solder
Pads
Figure 17 RF PA Nomenclature
To Remove the RF PA, add flux to the leads of the device, and use a soldering iron and pair of
tweezers to heat and lift each lead free and clear of its respective solder
pad on the circuit board. Use the R-1319 Rework Station and the heatfocus head designed especially for removal of the RF PA. Attach the
heat-focus head to the chimney heater. Adjust the temperature control
to approximately 415 degrees F (215 degrees C) 445 degrees F (230
degrees C) maximum. Apply solder paste to the exposed solder pads
under the PA. Place the circuit board in the circuit board holder, and
position the RF PA under the heat-focus head. Lower the heat-focus
head until it is approximately 1/8”-1/4” (0.3cm-0.6cm) above the PA
cover. Turn on the heater and begin the reflow cycle. Heating time
should not be less than two minutes.
Once the part has reflowed, before trying to remove the PA, carefully
lower the circuit board holder as follows:
• Loosen the thumbscrew on the shaft of the circuit board holder,
• push the spring-loaded holder down and away from the heat-focus
head, and
• retighten the thumbscrew with the holder in the bottomed
position.
Grab the PA with a large pair of tweezers and remove it from the circuit
board. Let the circuit board cool for approximately two minutes. Then
remove the circuit board from the circuit board holder.
To Replace the RF PA;if necessary, add solder to the PA ground plane on the printed circuit
board. Then clean each PA lead solder pad on the circuit board to
ensure alignment of the new RF PA. Prepare the sight by using solder
wick and a soldering iron to remove all solder from the solder pads.
Clean the solder pads with alcohol and a small brush. Dry and inspect.
Ensure that all solder is removed.
Once the preparation is complete, place the circuit board back in the
circuit board holder. Add solder paste flux to the ground plane and to
the leads’ solder pads. Once the flux is applied, place the new RF PA on
the circuit board, making certain that the PA heatsink sits flush on the
board. Position the heat-focus head over the RF PA and lower it to
approximately 1/8”-1/4” (0.3cm-0.6cm)) above the PA cover. Turn on
49
the heater and begin the reflow cycle. Heating time should not be less
than two minutes.
Once the RF PA reflows, raise the heat-focus head and wait
approximately two minute for the part to cool. Remove the circuit
board and inspect the solder joint between the slab and the ground
plane. No cleaning should be necessary. Use the soldering iron and add
solder to each of the RF PA leads and associated pads. Inspect the lead/
pad bond for opens and solder shorts.
50
Exploded Views
There are several models in this family of radios: HT 1000, JT 1000,
MT 2000, MTS 2000, and MTX Series radios.The exploded view diagrams
in this section illustrate this family of radios by capturing them into one
of four categories:
• basic radios
• top-display radios
• keypad radios
• uni-board radios
Determine which category describes your unit, and use the appropriate
exploded view to help identify components with description and
Motorola part number.
8
51
Basic Radios and Basic Radios with
Option Mate Optional Front Cover
ITEM
MOTOROLA
NO.
3A
3B
10See Note 1MICROPHONE (MK401)
111405330W01BOOT, Microphone
128405310W04 FLEX, Front Cover/Display
138405333W03FLEX, Controls
143905517V01POPPLE, PTT (p/o S406)
153605253V01KNOB, On/Off/Volume
16
16A
17
17A
183205160W01SEAL, Actuator; for S101
192205159W01PIN, Actuator; for S101
203205514W01SEAL, Accessory Connector
213205177Z01SEAL, Control Top
223205178Z01SEAL, Emergency Button
232705877U01HOUSING, Switch
24See Note 1SWITCH, Toggle (S402)
25See Note 1POTENTIOMETER/SWITCH, On/Off/Volume
263905329W01POPPLE, Emergency Button
PART N O.
14505896U01LEVER, PTT
23205902U01SEAL, PTT, and ACTUATOR for S404, S405,
1505627V05
or 1505627V03
1505637V06
or 1505637V07
4- - - - - - - - - -LABEL, Agency Approval; not field
38See Note 1SWITCH, RF (S101)
39- - - - - - - - -LABEL, Barcode; not field replaceable
404105266V01SPRING, RF Switch; part of item 39
414405524V01PISTON, RF Switch; part of item 39
421405307X01INSULATOR
431505892U06CHASSIS (Rear Cover)
443905838V01CONTACT, Antenna Shield Ground (800MHz
452605898U01SHIELD, PA (800MHz and 900MHz radios
467505334W01PAD, Sound Dampening
47 Not Used
48 Not Used
497505393N33PAD, Shock
501305633V01RING. Concentric; Escutcheon
513605635V01KNOB, Concentric Ring
525105238U82LCD, Top Display
537505922Z01PAD, Thermal
shield (item 37)
replaceable
SHIELD, Front (earlier radios)
SHIELD, Front (latest radios; requires CLIPs,
Locking: 4285351C01 [Numbered 1, 1 req’d]
and 4285351C02 [Numbered 2, 2 req’d])
and 900MHz radios only)
only)
Notes: 1. Refer to electrical parts list (miscellaneous)
2. Refer to electrical parts list (transceiver board)
53
Keypad Radios
ITEM
NO.
14505896U01LEVER, PTT
23205902U01SEAL, PTT, and ACTUATOR for S404,
3A
3B
4- - - - - - - - -LABEL, Agency Approval; not field
SHIELD, Front (earlier radios)
SHIELD, Front (latest radios; requires CLIPs,
Locking: 4285351C01 [Numbered 1, 1 req’d]
and 4285351C02 [Numbered 2, 2 req’d])
Notes: 1. Refer to electrical parts list (miscellaneous)
2. Refer to electrical parts list (transceiver board)
55
Notes
56
Component Location
S
Diagrams, Parts Lists, and
Schematic Diagrams9
Introduction
GeneralTransceiver components and controller components reside on
separate circuit boards. Refer to the model charts located in the front
of this manual (prior to Section 1) to determine the controller board
and transceiver board unique to your model radio. Then locate the
appropriate transceiver board and controller board component
location diagram, schematic diagram, and parts list located in this
section of the manual.
Component location diagrams of the controls flex, two front cover/
display flexes, and the strip connector are also located in this section.
A miscellaneous parts list accompanies the flex circuits.
Almost all circuit boards in this family of radios are either six or eight
layers. Layer 1 is the outer most layer viewed from side 1, and layer 6
or 8 (as applicable) is the outer most layer viewed from sine 2. A typical
8-layer circuit board detail, viewing copper steps in proper layer
sequence, is illustrated in Figure 18.
Transceiver Frequently, transceivers that use a common transceiver board will be
combined into one component location diagram, one schematic
diagram, and one parts list. The differences between transceivers will
be noted throughout the applicable parts list.
ControllerFrequently, controllers that use a common controller board will be
combined into one component location diagram, one schematic
diagram, and one parts list. The differences between controllers will be
noted throughout the applicable parts list.
Schematic and Circuit
Board Notes
Most all of the schematic diagrams in this manual include specific
notes. Typically the notes are colored red to make them stand-out
57
from the overall schematic. The following two notes are general and
apply to all schematic and circuit board applications.
1. Unless otherwise stated, resistor values are in ohms (k = 1000),
capacitor values are in picofarads (pF) or microfarads (µF), and
inductor values are in microhenrys (µH) or nanohenrys (nH).
2. DC voltages are measured from point indicated to chassis ground
using a high impedance (10 megohm) Motorola DC voltmeter or
equivalent. Transmitter measurements should be made with a
1.2uF choke in series with the voltage probe to prevent circuit
loading.
Reference Designator
Assignment
Interconnect Tie Point
Legend
Reference designators are assigned in the following manner:
• Units Series =Receiver
• 100 SERIES = Transmitter
• 200 SERIES = Frequency Generation
• 300 SERIES = Miscellaneous
• 400 SERIES = Housing/Escutcheon
• 500 SERIES = Display
• 600 SERIES = Hear Clear Option
• 700 SERIES = Controller
5V REG =Regulated Five Volts
B+=Battery Voltage (7.5V)
R5=Receiver Five Volts
T5=Transmitter Five Volts
CLK=Clock
D=Data
DAC=Digital To Analog Converter
DAC RST =DAC Reset
LCK=Lock
NC=No Connection
SYN=Synthesizer
VR=Voltage Regulator
Integrated Circuit Details
with Pin-Out Names
58
Because of today’s technology, integrated circuits and special modules
are able to perform a vast amount of functions in a single component.
The components are getting smaller and the number of IO pins is
getting greater, to the point that there is not enough room to put
enough IC information on the schematics and circuit boards. To help
troubleshoot and signal trace this family of radios, several of the IC’s
are detailed with pin-out names and illustrated on the next few pages.
Remember that PBGA components in a radio can be a combination of
OMPAC and/or Glob Top. Although the illustrations on the next few
pages reflect OMPAC devices, like Good-by components are
electrically the same.
OPTION SELECT 1
EXTERNAL SPEAKER
EXTERNAL MICROPHONE
OPTION B+
OPTION SELECT 2
SPEAKER COMMON
REQUEST TO SEND
GROUND
BUSY
CLEAR TO SEND
TRANSMIT DATA
MODE CONTROL
DATA
10Mandown10
11Normal
Operation
AMTVAFixed Audio Output
B“SMART”
SB9600
Accessory
CExternal RF
Modem/FAX
11
Level
Identifies SB9600
Accessory
Enables AUX TX
and Discriminator
Audio Output
61
MEDIA & COMMUNICATIONS DEPT.
SS
D
6
Jedi VHF RF 8405511Y35.E
ILLUSTRATORDATEENGINEERDATEPROGRAMDISK
JP12/18/97
EDITORDATECHECKERDATE
JWB
LETTERING SIZE:
REQUIRES:
MAEPF-26300-O
DWG. NO.
MAEPF-26301
IllustratorCORRECTED
ASMARKED
ISS.
O
REVISION
O.K. AS ISO.K. AS MARKED
NUD7091B, NUD7092B, NUD/PMUD7095B, AND NUD7096B VHF (136-178MHz)
62
TRANSCEIVER BOARDS’ PARTS LIST AND COMPONENT LOCATION DIAGRAMS
ME12602657J01SHIELD, VCO
ME22602658J01SHIELD, Pendulum
ME32602659J01SHIELD, ZIF
ME42602661J01SHIELD, Varactor Filter, VHF
ME52602832X01SHIELD, ZIF Back
ME62602674J02SHIELD, VCO Back
ME72602675J01SHIELD, Synthesizer, Back
ME82602815X01SHIELD, Fixed Tuned Filter
Notes:
1. For optimum performance, order replacement diodes, transistors, and
circuit modules by Motorola part number only.
2. When ordering crystals, specify carrier frequency, crystal frequency,
crystal type number, and Motorola part number.
3. “Not Placed” means that components are for future use, and are not
placed on the circuit board at this time.
or- - - - - - - - - Not Placed in NUD7092B,
or- - - - - - - - -Not used in NUD7091B, NUD7096B
MECHANICAL PARTS
NUD7095B
THERMISTOR:
SWITCH:
TRANSFORMER:
MODULES: See Note 1
63
1
2
ANTENNA
P401
G1
G2
TO UNIVERSAL
CONNECTOR
EXT. ANT.
C4
330pF
L11
4T
2
4
6
R127
39
J401
GND
L13
5T
Q104
PWR_OUT
REV_PWR
REV_TRM
GND
GND
9
87
2
C112
P402
1
CR1
CR3
GND
10
5
4
5V_REG
3
C146
330pF
*
NOTES:
UNLESS OTHERWISE STATED RX DC VOLTAGES ARE MEASURED WITHOUT RF INTO J401.
1.
2.
RX RF VOLTAGES IN dBm ARE MEASURED WITH A 1.5 pF CAPACITOR IN SERIES WITH
THE 50 OHM ADAPTER OF AN RF MILLIVOLTMETER AND AN RF LEVEL OF -20 dBm INTO J401.
3.
VOLTAGES IN mV ARE MEASURED WITH A X10 SCOPE PROBE.
THESE LEVELS MEASURED BY REMOVING R52.
4.
5.
MEASUREMENTS MADE ABOVE CROSSOVER FREQUENCY.
MEASUREMENTS MADE BELOW CROSSOVER FREQUENCY.
6.
7.
= NOT PLACED
*
5
PWR_IN
U104
FWD_PWR
FWD_TRM
GND
GND12GND
GND
11
14
13
SB+C139
GND
15
GND
16
GND
7
3
1.8pF
R126
51
C132
6.8pF
Q107
3
C154
330pF
4
5
C133
CR103
3
CR102
3
5Vdc (RX)
0Vdc (TX)
2
1
NC
2
1
2
1
NC
C162
330pF
C153
330pF
5
3
R110
2.2K
0.5Vdc, 136MHz
0Vdc, 178MHz
Q108
1
2
C152
330pF
4
R115
180K
R111
5.6K
NC
C121
330pF
DCLKDAC
A2
B2
C3
SEL
CLK
SW2
NC
SW_C
REF_DA
R_T
SC1
SC2
E3
SW1
DATA
U102
D/A IC
E4
D1
B5
E2
D4
D5
D2
C1
NC
5V_REG
A3
5V
EN_BIAS
GND1D3GND2
B4
NC
B3
TX_DA
SC4
SC3
EN_ANT
C5
6.5Vdc (TX)
R139
100K
RESET
A4
C4
B1
C2
RX_DA
R116
130K
6.3Vdc (TX)
R4
10K
RF
1
2
TO UNIVERSAL
4
CONNECTOR
8
EXTERNAL
ANTENNA
5
L12
470nH
CR2
CR4
R199
*
S101
SWITCH
GND6GND17GND2
9
CR6
GND3
C130
11pF
C129
1pF
R117
47K
CR108
L128
12T
3
C151
10pF
R5
10K
CR7
C150
20pF
C77
0.1uF
-42dBm
L127
9T
L14
5T
CR9CR8
L126
12T
C149
20pF
-49dBm
7.3Vdc (RX)
68nH
L16
4T
L6
C147
.022uF
C148
5.1pF
FREQ
136MHz
156MHz
178MHz
V (RX)
1.0Vdc
2.3Vdc
4.0Vdc
120nH
-34dBm
C9
*
L7
C14
22uF
CR109
L121
1uH
C140
330pF
2
0.6Vdc
L131
1uH
6.7Vdc (RX)
5.6Vdc (TX)
L122
1uH
R131
100K
6
Vcc
IN
OUT
U1
RF AMPLIFIER
ABP4AG2
GND11GND23GND3
8
C13
.01uF
7
5
0Vdc (RX)
R2
56K
C156
1uF
1
2
150nH
B+
C163
51pF
C118
0.1uF
R113
33K
Q105
7.4Vdc (RX)
C141
330pF
L8
1.4Vdc
R1
10
R114
5Vdc (TX)
0Vdc (RX)
R129
4.7K
5Vdc (TX)
0Vdc (RX)
R8
470
C11
.01uF
C164
100pF
15K
5
4
3
CR11
E101
5Vdc
100nH
C90
4.3pF
C123
0.1uF
C126
3.3uF
4.8Vdc
L9
C101
0.1uF
C116
1pF
1
OUT
6
RF_OUT
U105
RF P.A.
R106
3.3K
U103
5V REG
C16
5.1pF
GND
2
1
L10
56nH
C102
330pF
2.5Vdc
IN
TP10
RF_IN
V_CONTROL
B_PLUS
SWB_PLUS
3
R72
100
C71
330pF
C6
6.2pF
C103
10uF
1
3
5
4
2.45Vdc (TX)
0Vdc (RX)
C128
1uF
1
NC
2
-62dBm
L3
47nH
C7
2.7pF
NC
*
CR12
(NOTE 4)
C8
16pF
3
L4
39nH
C97
13pF
C107
330pF
C161
0.1uF
R70
1.5K
C104
3.3uF
C108
330pF
L130
1uH
Q101
C109
1uF
E2
A3
D1
C5
B1
B2
L105
1uH
5Vdc (TX)
0Vdc (RX)
4.6Vdc (RX/TX)
4.3Vdc (RX) (NOTE 4)
4.7Vdc (NOTE 4)
C15
100pF
L5
47nH
C86
6.2pF
C87
16pF
C88
8.2pF
R101
0
ICATH_2
RE_DET
TX12
DA_REF
ANT_SW_BS
CATH_1
C135
330pF
C12
*
C80
33pF
B+
NC
D3
E4
E3
BPOS
U101
TX ALC IC
ANODE_1
D4
A2
B3
2.5Vdc (TX)
3.2Vdc (TX)
33pF
L30
0.047 uH
C105
330pF
LCK
NC
C1
PA_BIAS
RECV_5V
BIAS_EN
GND
A4
C99
L101
1uH
BIAS_RT
TEMP_SENSE
INT_CAP_OUT
INT_CAP_IN
C72
330pF
C106
10uF
4.9Vdc (TX)
0Vdc (RX)
PA_OUT
PA_CNTL
ANODE_2
RX_1
5V_TX
C115
.033uF
R112
1MEG
2.2uH
4.8Vdc (RX)
0.1Vdc (TX)
0.4Vdc (RX)
C83
.01uF
5
4
T1
C98
330pF
C113
330pF
L32
B4
B5
C2
D2
D5
C4
C3
C85
10uF
2.2Vdc (TX)
NC
NC
1
2
3
Q110
R7
100
14
R102
4.7K
8
7
B+
2.9Vdc (TX)
0Vdc (RX)
3
RF1
RF2
MIXER
BUFFER
LOIN
GND5GND16GND29GND3
1
C111
330pF
U2
10
BVDD
GND413GND5
IFP
IFN
BBP
BDIV
RT101
50K
C31
.01uF
12
11
2
4
63B81097C02-O
1
2
354
4Vdc
C84
.01uF
Sheet 1 of 2
T2
1Vdc
C82
.01uF
TX_LO
AGC
IF
-31dBm (RX)
0.5Vdc
RX_LO
NUD7091B, NUD7092B, NUD/PMUD7095B, AND NUD7096B VHF (136-178MHz)
64
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 1 of 2)
TX_LO
RX_LO
AGC
IF
C258
4.7uF
CR206
NC
3
-7.8 Vdc(Rx) (Note 5)
-7.8 Vdc(Tx) (Note 5)
Else 0 Vdc (Note 6)
L222
390nH
L223
1.2Vdc
180nH
-18dBm
C208
6.2pF
C259
0.22uF
.01uF
1
2
C271
4.7uF
C209
0.1uF
C267
3.3Vdc
C285
330pF
C214
C201
1pF
K11K22K3
CR205
A1
A25A3
6
*
C294
330pF
C287
3pF
C204
330pF
3
3
4
K1
K2
K3
C257
Q201
S
D
1000pF
-31 dBm
1.5Vdc
C213
5.6pF
L220
150nH
C202
10pF
C250
C212
CR204
.01uF
C266
.01uF
*
2.2Vdc (RX)
0Vdc (TX)
4
A1
52
A2
61
A3
5V
0V
5Vpp (Note 5)
R218
100K
0Vdc (Rx, Tx) (Note 6)
Else 4.4 Vdc (Note 5)
R215
30K
R214
43K
L205
33nH
C211
330pF
R220
2K
R223
L204
47K
1uH
1.7Vdc
15
4
2
C203
5.1pF
L201
33nH
C205
3pF
13Vdc
RBY
TX_OUT
RX_OUT
C256
.01uF
LCK
1.8Vdc (RX)
1.7Vdc (TX)
C252
.01uF
C251
330pF
16
PS
VCO BUFFER
GND18NC
S2
1
14
13
R210
510
5
L215
1uH
C286
330pF
NC
NC
NC
NC
NC
TRB
U201
GND
5V
0V
8
9
7
6
26
27
37
38
40
35
41
29
28
19
21
39
L221
390nH
7
NC
VMULT2
VMULT1
VMULT3
VMULT4
TST1
TST2
AUX1
AUX2
AUX4
ADAPTTSW
LOCK
CPBIAS1
CPBIAS2
SOUT
PREIN
AUX3
L208
1uH
R209
510
10
S1
E2
11
12
20
SYNTHESIZER
33
0.7Vdc (RX)
4.5Vdc (TX)
-16dBm
0.1Vdc (RX)
2.4Vdc (TX)
L217
1uH
VC
VCC
SV1
C
B2
36
SIN
GND4
22
3
6
9
R217
30K
VCP
U204
GND3
13
R219
22
1123
2542
DC5V2
DC5V3
DC5V4
AD_BYPASS
GND1
GND2
R_GND2
1
44
43
R203
Q202
-25dBm
4.5Vdc
C221
330pF
-17dBm(TX)
2.8Vdc
C245
1000pF
DC5V1
FREFOUT
CLK
XTAL2
XTAL1
MODIN
DATA
IOUT
IADAPT
EN_CE
PVREF
WARP
SBASE
CAP
MODOUT
R_GND1
EN
31
22
C219
10pF
L216
39nH
R204
20K
R206
20K
10
15
14
32
34
16
18
17
30
3
5
2
24
12
4
L219
22nH
C236
11pF
2.5Vdc
NC
NC
NC
NC
NC
R208
4.7K
C220
15pF
D
CLK
C222
7.5pF
5Vdc
R222
1.2K
SYN
C253
10uF
C223
1-4pF
C235
15pF
R205
30K
C206
620pF
2.1MHz
C293
*
C237
13pF
4Vpp
(16.8MHz)
100pF
R212
620
R211
62
C247
1uF
C288
330pF
C225
1.6pF
C248
0.1uF
L210
27nH
C303
.022uF
C238
1000pF
L211
56nH
C277
330pF
L218
1uH
C230
12pF
R213
270
L224
270nH
C289
.022uF
C241
30pF
C243
24pF
C226
62pF
C274
R207
20K
*
*
R221
C260
.039uF
C284C280
.01uF
0V OR 5Vdc UNLOCK
1.8Vdc typical
TP5
CR208CR201
C240
1-4pF
CR202
L212
C228
82nH
330pF
CR207
CR203
*
C227
330pF
10
FOUT
8
DET
12
VOPT
11
VREG
26
GND
1
NC1
2
NC2
3
NC3
(shield in place)
R51
200K
C246
.022uF
L209
1uH
C244
.022uF
2.6Vdc
C231
10uF
C233
330pF
L213
1uH
13
9
DE
NC56NC615NC716NC817NC9
NC4
4
5
C52
.018uF
C53
0.15uF
NC
23
14
20
CE
VDD
VDD2
U203
REF OSC
16.8 MHz
16
CR5
C270
1000pF
NC
NC
NC
7
27
S1
NC12
NC13
CEXT
SCK
SS
SO
NC18
NC17
NC16
NC15
NC1019NC11
NC14
28
18
R16
R17
20K
2.7K
C54
330pF
L24
470nH
TP5 VCTRL
5.0Vdc (TX), 136MHz
5.0Vdc (RX), 136MHz
7.5Vdc (TX), 178MHz
7.5Vdc (RX), 178MHz
L33
2.2uH
C34
47pF
L19
270nH
25
22
24
21
32
31
30
29
D
NC
C55
27pF
CLK
L225
2.2uH
C291
.022uF
R34
47K
2.5Vdc
R35
47K
L25
2.2uH
R73
10K
C70
.01uF
-31dBm (NOTE 4)
R41
22
R40
270
C56
43pF
1.7Vdc
C57
43pF
5V_REG
L23
1.8uH
R42
270
5V_REGSB+
3.4Vdc
C41
0.1uF
C50
0.1uF
NC
5
1.6Vdc
IN
C292
.022uF
C65
.01uF
1
C60
0.1uF
R43
510
C254
4.7uF
1 Vpp
16.8MHz
R32
2.7K
3.8Vdc
3
Q1
2
R33
2.7K
-56dBm (NOTE 4)
(using 10 pF)
1.6Vdc
C61
0.1uF
L20
1.2uH
C35
47pF
C255
C210
.022uF
-38dBm
44.85MHz (NOTE 4)
C63
0.1uF
C58
2.2pF
C95
18pF
C40
100pF
C36
4.3pF
U202
5V REG
1
OUTPUT
ERRORFEEDBACK
SENSE2SHUTDOWN
6
5V_TAP
C96
.01uF
C49
0.33uF
2.8Vdc
17
+5V3
13
+5V2
12
Vpp
11
+5V1
6
DM_IN
5
PEAMP_OUT
4
PEAMP_5V
10
RSSI_FLT
7
DM_BYP
40
AGC
2.5V
39
30
2.5Vdc
C46
0.22uF
R47
22
R49
1.5K
44.85MHz
FL1
OUT
GND1
GND
4
2
GND
4
C62
*
23
+2.5V2
31
INPUT
14
18
+5V4
LO_IN
GND11GND2
8
Q4
1
8
7
3
25
22
Vc
16.8MHz
U3
ZIF
GND315GND4
16 26
32
R46
47K
C38
2.7pF
5V_REG
D
20
19
DATA
VIBYPASS
GND541GND6
2.0Vdc
C39
0
3
C125
3.3uF1000pF
29
21
CE
CLK
GND_PREAMP
PREAMPIN
2
R1=47K
SQ
C4NEG
C4POS
C3NEG
C3POS
C2NEG
C2POS
C1NEG
C1POS
RAMPCAP
+2.5V1
RSSI_OUT
9
R44
15K
C33
9.1pF
1.0A
7.5Vdc
Q5
3.6Vdc
PROGRAMING
31
32
33
34
35
36
37
38
28
DISC
24
27
-37dBm (RX) (NOTE 4)
1.6Vdc
L22
1uH
F1
32V
1A
2.4Vdc
LCK
LOCK=5V
UNLOCK=0V
CLK
DURING
R45
51K
PINS 31-38 = 2.5Vdc
C45
0.22uF
C44
0.22uF
C43
0.22uF
C42
0.22uF
2.5Vdc
C48
430pF
C47
0.1uF
R50
3.9K
C315
330pF
L301
1uH
TP10
2.8Vdc
B+
GND
SYN
2.1MHz
DAC
D
1
2
3
IS_B+
C304
330pF
C308
100pF
C311
3300pF
C305
100pF
C309
3300pF
1kHz
280mVpp/kHz
DEVIATION
C306
100pF
1.3Vdc
2.9Vdc (RX) (NOTE 2)
C307
100pF
C310
330pF
L302
1uH
*
C314
BATT+
BATT-
NC
J301-1
J301-20
J301-2
J301-3
J301-5
J301-4
J301-15
J301-14
J301-12
J301-17
J301-10
J301-11
J301-13
J301-7
J301-6
J301-8
J301-9
J301-16
J301-18
J301-19
RAW_B+
RAW B+
SW_B+
VCO_MOD
REF_OSC_SEL
LOCK_DET
CLOCK
IF_SEL
SQ_OUT
SYN_SEL
DISC
RSSI
2.1MHz/2.4MHZ
1200mVpp
DAC_SEL
DATA
GND
GND
GND
GND
GND
63B81097C02-O
Sheet 2 of 2
TO P301
5V
NUD7091B, NUD7092B, NUD/PMUD7095B, AND NUD7096B VHF (136-178 MHz)
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 2 of 2)
65
MEDIA & COMMUNICATIONS DEPT.
3
Jedi UHF RF 8404221J44.S
ILLUSTRATORDATEENGINEERDATEPROGRAMDISK
JP12/18/97
EDITORDATECHECKERDATE
JWB
LETTERING SIZE:REQUIRES:
DWG. NO.
MAEPF-2630
IllustratorCORRECTED
ASMARKED
ISS.
O
REVISION
O.K. AS IS
O.K. AS MARKE
RLSE.
MAEPF-26302-O
C157
NUE7265B, NUE7266B, NUE/PMUE7272B, AND NUE7274B UHF (403-470MHz)
TRANSCEIVER BOARDS’ PARTS LIST AND COMPONENT LOCATION DIAGRAMS
66
MAEPF-26303-O
Electrical Parts List, UHF Transceivers (403-470MHz)
NUE7265B, NUE7266B, NUE/PMUE7272B, NUE7274B
ME12602657J01SHIELD, VCO
ME22602658J01SHIELD, Ref. Oscillator
ME32602659J01SHIELD, ZIF
ME42602660J03SHIELD, RF
ME52602832X01SHIELD, ZIF Back
ME62602674J03SHIELD, VCO Back
ME72602675J01SHIELD, Synthesizer
ME82602686J01SHIELD, Coil
Notes:
1. For optimum performance, order replacement diodes, transistors,
and circuit modules by Motorola part number only.
2. When ordering crystals, specify carrier frequency, crystal
frequency, crystal type number, and Motorola part number.
3. “Not Placed” means that components are for future use, and are
not placed on the circuit board at this time.
MECHANICAL PARTS
THERMISTOR:
SWITCH:
7272B
NUE7265B and NUE7274B
TRANSFORMER:
MODULE: See Note 1
67
1
2
ANTENNA
P401
P402
TO UNIVERSAL
CONNECTOR
EXT. ANT.
C87
100pF
CR6
L30
4.22nH
R126
5130
J401
GND
G1
G2
Q104
NOTES:
1. UNLESS OTHERWISE STATED RX DC VOLTAGES ARE MEASURED WITHOUT RF INTO J401.
2. RX RF VOLTAGES IN DBM ARE MEASURED WITH 1.5PF IN SERIES WITH 50 OHM ADAPTER
OF THE RF MILLIVOLTMETER & A RF LEVEL OF -20 DBM INTO J401.
3. VOLTAGES IN mV ARE MEASURED WITH A X10 SCOPE PROBE.
4. THESE LEVELS MEASURED BY REMOVING R52.
5. MEASUREMENTS MADE ABOVE CROSSOVER FREQUENCY.
6. MEASUREMENTS MADE BELOW CROSSOVER FREQUENCY.
3
4
5
7. * = NOT PLACED
C132
8.2pF
3.9Vdc (TX)
0Vdc (RX)
C155
100pF
2
1
C119
100pF100pF
4.9Vdc (RX)
0Vdc (TX)
2
1
NC
L128
11.03nH
C151
3pF
-34dBm
7.4Vdc (RX)
R23
10K
CR8
L34
4.22nH
3
C133
1.8pF
CR103
Q107
3
C145
100pF
L127
11.03nH
C150
15pF
CR9
4.22nH
NC
R111
5.6K
C153
100pF
100pF
L35
2
1
C86
CR101
R110
2.2K
C117
0.55Vdc 450MHz
0Vdc, 520MHz
Q108
5
3
L126
11.03nH
C149
20pF
-32dBm
L37
12nH
3
FREQ
450MHz
512MHz
520MHz
C10
56pF
1
4
2
C121
100pF
R128
47K
C148
4.3pF
VR (RX)
1.14Vdc
3.16Vdc
3.50Vdc
C9
10pF
C147
100pF
CR109
L6
47nH
R115
180K
CR108
L7
220nH
R114
10K
D1
B5
NC
E2
D4
D5
D2
CLK
DACD
C3
SEL
CLK
SW2
NC
SW_C
U102
D/A IC
REF_DA
R_T
SC1
SC2
SW1
E4
C1
E3
NC
6.5Vdc (TX)
L107
150nH
C137
100pF
L108
150nH
-28dBm
C13
22uF
A2
GND2
D3
6.7Vdc (RX)
5.8Vdc (TX)
C138
100pF
L121
270nH
C140
4700pF
5V_REG
DATA
GND1
2
4
C72
100pF
2
RF_OUT
U104
1
COUPLER
78 9
R127
5
4
5V_REG
3
1
C114
100pF
2
CR7
L31
4.22nH
RF_IN
10
SB+
C154
100pF
RF
1
2
4
TO UNIVERSAL
CONNECTOR
8
EXTERNAL
ANTENNA
C2
6.2pF
5
6
34
R199
0
S101
SWITCH
GND5GND16GND279GND3
R22
10K
L32
11.03nH
C1
5.1pF
C3
4.3pF
NC
R139
100K
B3
A3B2
5V
RESETRX_DA
A4
EN_BIAS
C4
TX_DA
B1
SC4
C2
SC3
EN_ANT
B4
C5
NC
R116
130K
L105
270nH
L122
270nH
L123
220nH
7.4Vdc (RX)
R119
1MEG
6
Vcc
IN
RF AMPLIFIER
U1
ABP
GND13GND2
8
1
C120
OUT
AG2
GND3
*
C156
1uF
7
5
5Vdc (TX)
0Vdc (RX)
2.4Vdc0.6Vdc
C118
0.1uF
0Vdc (RX)
4.9Vdc (RX)
0.1Vdc (TX)
L8
470nH
R36
*
E104
*
C102
*
3.2Vdc, 450MHz
3.5Vdc, 512MHz
3.6Vdc, 520MHz
R113
33K
0Vdc (RX)
5Vdc (TX)
C141
100pF
R26
*
R27
10
R129
4.7K
1
2
C103
10uF
CR11
6.5Vdc (TX)
Q105
L9
39nH
C11
.01uF
B+
E101
57R01
C105
L102
*
2
VCNTRL
RFIN
100pF
1
NC
C107
*
C104
100pF
C116
C101
.022uF
4
NC
L103
*
*
C108
*
RFOUT
3
B_POS
85Y10
Q101
P.A.
U105
*
C109
C110
C123
0.1uF
5
4
5Vdc
3
C126
3.3uF
L10
18nH
C18
10pF
*
1
-46dBm
-18dBm
5Vdc (TX)
0Vdc (RX)
5V REG
OUT
(NOTE 4)
C19
6.8pF
*
U103
C4
9.1pF
GND
2
1
R106
3.3K
IN
TP10
L11
11.03nH
3
C88
100pF
C5
7.5pF
2.45Vdc (TX)
C139
*
0Vdc (RX)
C128
1uF
L12
27.42nH
C89
6.8pF
E2
A3
D1
C5
B1
B2
C16C12
30pF
C15.01uF
100pF
C6
5.6pF
L13
19.61nH
C90
15pF
R130
*
ICATH_2
RE_DET
TX12
DA_REF
ANT_SW_BS
CATH_1
L16
470nH
C7
15pF
L101
270nH
R107
*
C127
*
B+
D3
A2
11.03nH
5.1pF
C91
10pF
E4
B3
L14
C92
NC
NC
E3
C1
BPOS
PA_BIAS
RECV_5V
U101
TX ALC IC
GND
ANODE_1
BIAS_EN
A4
D4
C135
100pF
-50dBm
C106
4.7uF
6.8Vdc (TX)
7.5Vdc (RX)
4.9Vdc (TX)
0Vdc (RX)
BIAS_RT
TEMP_SENSE
INT_CAP_OUT
INT_CAP_IN
3.3Vdc (TX)
100pF
L15
11.03nH
C94
16pF
PA_CNTL
ANODE_2
(NOTE 4)-31dBm
C93
4.3pF
2.2Vdc (TX)
PA_OUT
RX_1
5V_TX
C115
.033uF
C157
0.1uF
R52
100
C99
13pF
B4
B5
D2
D5
C4
C3
C2
Q110
NC
NC
1.5Vdc (TX)
0.4Vdc (RX)
C83
4
5
C98
20pF
B+
TX_LO
LCK
DAC
DAC
CLK
CLK
SB+
5V_REG
T2
1
2
354
1Vdc
4Vdc
C84
C82
.01uF
.01uF
63B81097C03-O
Sheet 1 of 2
D
B+
DATA
SB+
B+
5V_REG
AGC
IF
-22dBm (RX)
0.5Vdc
RX_LO
C17
0.1uF
T1
0Vdc (TX)
C85
10uF100pF
3
2
1
C113
100pF
R102
4.7K
R7
100
8
7
14
C111
100pF
4.9Vdc (RX)
0.1Vdc (TX)
RF1
RF2
MIXER
BUFFER
LOIN
GND15GND26GND39GND410GND5
GND
1
2.8Vdc (TX)
0Vdc (RX)
3
BVDD
U2
13
BBP
BDIV
IFN
IFP
50K
RT101
C31
11
12
2
4
NUE7265B, NUE7266B, NUE/PMUE7272B, AND NUE7274B UHF (403-470MHz)
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 1 of 2)
68
NC
-7.6 Vdc(Rx) (Note 6)
-7.8 Vdc(Tx) (Note 6)
Else 0 Vdc (Note 7)
L223
390nH
-9dBm
3Vdc (TX)
0Vdc (RX)
TX_LO
RX_LO
AGC
IF
C258
4.7uF
CR206
C284
0.22uF
L224
33nH
C267
.01uF
C201
1pF
C271
4.7uF
C270
1000pF
K11K22K3
CR205
A1 A2
5A34
6
C292
1pF
1
2
3
3
L220
27nH
K1
K2
K3
C257
.01uF
C204
100pF
Q201
S
D
R215
43K
C250
1000pF
C202
*
L201
22nH
CR204
390nH
R218
100K
L204
C266
.01uF
C205
*
13Vdc
6
A1
5
A2
4
A3
C256
.01uF
5V
0V
5Vpp (N0te 6)
0Vdc (Rx, Tx) (Note 7)
Else 4.4 Vdc (Note 6)
LCK
1.7Vdc (RX) 1.6Vdc (TX)
R214
43K
C294
100pF
C211
100pF
*
R223
68K
1.4Vdc
2.2Vdc (RX)
0.1Vdc (TX)
1.9Vdc (TX)
15
4
2
1.6 Vdc-23 dBm
L205
27nH
0.7Vdc (RX)
4.3Vdc (TX)
4.6Vdc
R220
2K
3.3Vdc
16
RBY
TX_OUT
RX_OUT
14
C214
C203
1.5pF
8
9
7
6
26
NC
27
NC
37
NC
39
40
NC
35
NC
41
29
28
19
21
38
C290
100pF
L221
390nH
7
5
S1
PS
TRB
U201
VCO BUFFER
S2
GND1GND18NC
12
13
NC
R210
330
L215
390nH
VMULT2
VMULT1
VMULT3
VMULT4
TST1
TST2
AUX1
AUX3
AUX4
ADAPTTSW
LOCK
CPBIAS1
CPBIAS2
SOUT
PREIN
AUX2
L208
390nH
2Vdc(RX)
R209
470
0.1Vdc (RX)
2.25Vdc (TX)
C209
.01uF
10
VC
VCC
SV1
B2
E2
11
20
36
2542
SIN
VCP
DC5V4
U204
SYNTHESIZER
GND2
GND3
GND4
13
22
33
-8dBm
C208
100pF
3
6
9
C
R217
15K
R219
10
1
Q202
-18dBm
4.5Vdc
1000pF
DC5V3
GND1
44
R203
C245
1123
DC5V2
FREFOUT
AD_BYPASS
MODOUT
R_GND2
43
22
L219
18nH
C236
5.1pF
R204
10K
R206
10K
DC5V1
CLK
XTAL2
XTAL1
MODIN
DATA
IOUT
IADAPT
EN_CE
PVREF
WARP
SBASE
CAP
R_GND1
EN
31
10
3
15
14
5
2
32
34
24
12
16
18
17
30
2.6Vdc
C221
.01uF
-12dBm(TX)
2.8Vdc
L216
15nH
C219
3.9pF
2.3Vdc
1.2Vdc
C315
100pF
SYN
C304
100pF
2.1MHz
DAC
D
GND
B+
IS_B+
C313
C311
3300pF
C305
100pF
C309
3300pF
C307
100pF
390nH
C308
100pF
*
C306
100pF
C310
100pF
L302
*
C314
1
BATT+
2
BATT-
3
NC
J301-1
J301-20
J301-2
J301-3
J301-5
J301-4
J301-15
J301-14
J301-12
J301-17
1kHz
280mVpp/kHz
DEVIATION
J301-10
J301-11
J301-13
J301-7
J301-6
J301-8
J301-9
J301-16
J301-18
J301-19
RAW_B+
RAW B+
SW_B+
VCO_MOD
REF_OSC_SEL
LOCK_DET
CLOCK
IF_SEL
SQ_OUT
SYN_SEL
DISC
RSSI
2.1/2.4_MHZ
1200mVpp
DAC_SEL
DATA
GND
GND
GND
GND
GND
63B81097C03-O
Sheet2 of 2
TO P301
5V
1.0A
32V
7.5Vdc
LCK
DURING
PROGRAMING
PINS 31-38 = 2.5Vdc
31
32
33
34
35
36
37
38
28
24
27
2.5Vdc
C47
0.1uF
C39
1.8pF
F1
1A
LOCK=5V
UNLOCK=0V
CLK
R45
51K
C45
0.22uF
C44
0.22uF
C43
0.22uF
C42
0.22uF
C48
430pF
L301
390nH
2.9Vdc (RX) (NOTE 3)
NC
NC
NC
23
14
9
*
C274
5Vdc
2.1MHz
R221
1.2K
C289
100pF
CLK
NC
2.3Vdc
D
SYN
4
C216
NC
3300pF
NC
NC
NC
C253
10uF
C238
100pF
C235
4.3pF
C237
3.3pF
R205
15K
L210
18.9nH
R208
2K
C222
3.9pF
C223
4.5pF
C220
5.1pF
C217
100pF
C275
0.1uF
C247
0.47uF
C206
3300pF
C225
R211
1pF
150
R212
750
C239
10pF
C243
8.2pF
C279
100pF
L222
270nH
C287
.022uF
L207
22nH
L218
390nH
C303
.022uF
L211
11.3nH
C240
4.5pF
R207
56K
C230
*
C280
0.1uF
R213
470
C226
11pF
CR203
CR201
L212
22nH
*
R211
C231
10uF
CR202
C288
.01uF
CR208CR207
CR209
C228
100pF
100nH
C227
100pF
C260
.047uF
C246
.022uF
L209
390nH
L213
4Vpp
16.8MHz
C244
.022uF
C233
100pF
TP5
1
2.5Vdc
13
10
DE
FOUT
8
DET
12
VOPT
11
VREG
26
GND
1
NC1
2
NC2
3
NC3
0V OR 5Vdc UNLOCK
2.0Vdc typical
(shield in place)
R18
200K
4.9(RX)Vdc @ 450MHz
5.2(TX)Vdc @ 450MHz
6.1(RX)Vdc @ 512MHz
7.4(TX)Vdc @ 512MHz
7.7(RX)Vdc @ 520MHz
9.2(TX)Vdc @ 520MHz
CE
VDD
REF OSC
16.8 MHz
NC45NC56NC615NC716NC817NC9
4
C52
.018uF
C53
0.15uF
CR5
TP5 VCTRL
20
VDD2
U203
R16
2.7K
NC1227NC13
7
18
NCNC
21
SO
CEXT
SCK
NC18
NC17
NC16
NC15
NC14
NC1019NC11
R17
20K
C54
39pF
L24
180nH
R51
1.2K
D
25
S1
22
24
SS
32
31
30
29
28
C64
0.1uF
C55
33pF
CR12
3
4.6Vdc (NOTE 5)
L36
150nH
2.5Vdc
R35
47K
R53
10K
CLK
1
2
16.8MHz
R34
47K
1.7Vdc
R40
470
C56
43pF
C57
43pF
L23
560nH
R41
22
5V_REGSB+
2.2uH
2.2uH
C59
.01uF
L202
R42
470
1 Vpp
C65
4700pF
1
5V_REG
L25
R43
C282
C254
0.1uF
4.7uF
R32
2.7K
-23dBm
3.8Vdc
(NOTE5)
3
Q1
2
R33
2.7K
*
-53dBm (NOTE 5)
using 10 pF
1.6Vdc
C60
C61
0.1uF
0.1uF
-44dBm (NOTE 5)
L20
470nH
C35
*
73.35MHz
2.8Vdc
C40
100pF
C36
5.1pF
C58
2.2pF
C95
8.2pF
C255
.022uF
C63
0.1uF
3.4Vdc
C41
0.1uF
C210
C51
0.1uF
1
5
NC
6
C96
.01uF
17
+5V3
13
+5V2
12
Vpp
11
+5V1
1.6Vdc
6
DM_IN
5
PEAMP_OUT
4
PEAMP_5V
10
RSSI_FLT
7
DM_BYP
40
AGC
2.5Vdc
R47
R50
1.5K
FREQ=73.35MHz
FL1
IN
GND2GND1
OUTPUT
ERRORFEEDBACK
SENSE2SHUTDOWN
5V_TAP
C49
0.33uF
+2.5V2
2.5V
39
30
C46
0.22uF
0
31
OUT
4
U202
INPUT
5V REG
GND
4
25Vc18
14
22
+5V4
LO_IN
16.8MHz
U3
ZIF
GND11GND28GND315GND4
16 26
Q4
32
1
R46
47K
R48
*
5V_REG
D
19
VIBYPASS
GND541GND6
2.0Vdc
C38
10pF
L22
470nH
8
7
3
3.4Vdc
2923
21
20
CE
CLK
DATA
GND_PREAMP
PREAMPIN
3
2
R49
15K
C125
3.3uF0.1uF
Q5
R1=47K
SQ
C4NEG
C4POS
C3NEG
C3POS
C2NEG
C2POS
C1NEG
C1POS
DISC
RAMPCAP
+2.5V1
RSSI_OUT
9
-36dBm (RX)
(NOTE 5)
1.4Vdc
C50
.01uF
R44
680
NUE7265B, NUE7266B, NUE/PMUE7272B, AND NUE7274B UHF (403-470MHz)
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 2 of 2)
69
MEDIA & COMMUNICATIONS DEPT.
3
Jedi UHF RF 8404221J44.S
ILLUSTRATORDATEENGINEERDATEPROGRAMDISK
JP12/18/97
EDITORDATECHECKERDATE
JWB
LETTERING SIZE:REQUIRES:
DWG. NO.
MAEPF-2630
IllustratorCORRECTED
ASMARKED
ISS.
O
REVISION
O.K. AS IS
O.K. AS MARKE
RLSE.
MAEPF-26302-O
C157
NUE7267B, NUE7268B, NUE/PMUE7273B, AND NUE7275B UHF (450-520MHz)
70
TRANSCEIVER BOARDS’ PARTS LIST AND COMPONENT LOCATION DIAGRAMS
MAEPF-26303-O
Electrical Parts List, UHF Transceivers (450–520MHz)
NUE7267B, NUE7268B, NUE/PMUE7273B, NUE7275B
ME12602657J01SHIELD, VCO
ME22602658J01SHIELD, Ref. Oscillator
ME32602659J01SHIELD, IF
ME42602660J03SHIELD, Varactor Filter
ME52602832X01SHIELD, IF Back
ME62602674J03SHIELD, VCO Back
ME72602675J01SHIELD, Synthesizer Back
ME82602686J01SHIELD, Coil
Notes:
1. For optimum performance, order replacement diodes, transistors,
and circuit modules by Motorola part number only.
2. When ordering crystals, specify carrier frequency, crystal
frequency, crystal frequency, crystal type number, and Motorola
part number.
3. “Not Placed” means that components are for future use, and are
not placed on the circuit board at this time.
MECHANICAL PARTS
NUE7267B and NUE7275B
NUE7268B and NUE7273B
THERMISTOR:
SWITCH:
NUE7268B and NUE7273B
NUE7267B and NUE7275B
TRANSFORMER:
MODULE: See Note 1
71
1
2
ANTENNA
P401
P402
TO UNIVERSAL
CONNECTOR
EXT. ANT.
C87
100pF
CR6
L30
4.22nH
R12630R127
51
Q104
J401
GND
G1
G2
NOTES:
1. UNLESS OTHERWISE STATED RX DC VOLTAGES ARE MEASURED WITHOUT RF INTO J401.
2. RX RF VOLTAGES IN DBM ARE MEASURED WITH 1.5PF IN SERIES WITH 50 OHM ADAPTER
OF THE RF MILLIVOLTMETER & A RF LEVEL OF -20 DBM INTO J401.
3. VOLTAGES IN mV ARE MEASURED WITH A X10 SCOPE PROBE.
4. THESE LEVELS MEASURED BY REMOVING R52.
5. MEASUREMENTS MADE ABOVE CROSSOVER FREQUENCY.
6. MEASUREMENTS MADE BELOW CROSSOVER FREQUENCY.
3
4
5
GND2
9
C3
4.3pF
C133
1.8pF
3
GND3
C132
8.2pF
CR103
Q107
7. * = NOT PLACED
2
1
C119
100pF
2
1
NC
100pF
11.03nH
3
C151
4.3pF
CR8
L34
4.22nH
3.9Vdc (TX)
0Vdc (RX)
C155
100pF
4.9Vdc (RX)
0Vdc (TX)
C153
C150
12pF
-34dBm
7.4Vdc (RX)
R23
10K
C145
100pF
11.03nH
CR9
L35
4.22nH
NC
R111
L127
2
1
1K
C86
100pF
CR101
R110
4.7K
C117
100pF
0.55Vdc 450MHz
0Vdc, 520MHz
Q108
5
3
11.03nH
C149
13pF
-32dBm
L37
15nH
3
L126L128
FREQ
450MHz
512MHz
520MHz
C10
56pF
1
4
2
C121
100pF
R128
47K
VR (RX)
1.14Vdc
3.16Vdc
3.50Vdc
C9
6.8pF
C148
1pF
R115
180K
C147
100pF
L6
39nH
L7
180nH
R114
15K
D1
B5
NC
E2
D4
D5
D2
CLK
DACD
C3
SEL
SW2
NC
SW_C
REF_DA
R_T
SC1
SC2
SW1
E3
C1
NC
6.5Vdc (TX)
150nH
CR108
CR109
L108
150nH
-28dBm
C13
22uF
B2
CLK
D/A IC
L107
C137
100pF
U102
GND2
E4
C138
100pF
270nH
4700pF
5V_REG
A2
DATA
GND1
D3
6.7Vdc (RX)
5.8Vdc (TX)
L121
C140
2
4
C72
100pF
2
RF_OUT
U104
1
COUPLER
78 9
5
4
5V_REG
3
1
2
4
8
1
C114
100pF
2
CR7
L31
4.22nH
5
RF_IN
6
34
10
SB+
C154
100pF
R199
0
S101
RF
SWITCH
TO UNIVERSAL
CONNECTOR
EXTERNAL
ANTENNA
GND6GND1
5
7
R22
10K
L32
11.03nH
C1
4.3pF
C2
6.2pF
R139
100K
A3
B3
5V
RESET
A4
EN_BIAS
C4
TX_DA
B1
SC4
C2
SC3
EN_ANT
RX_DA
C5
B4
NC
R116
130K
L105
270nH
L122
270nH
L123
220nH
7.4Vdc (RX)
R119
1MEG
6
Vcc
IN
RF AMPLIFIER
U1
ABP
GND11GND23GND3
8
NC
C120
*
C156
1uF
5Vdc (TX)
0Vdc (RX)
7
OUT
5
2.4Vdc0.6Vdc
AG2
C118
0.1uF
0Vdc (RX)
4.9Vdc (RX)
0.1Vdc (TX)
L8
470nH
R36
*
E104
*
C102
*
3.2Vdc, 450MHz
3.5Vdc, 512MHz
3.6Vdc, 520MHz
R113
33K
0Vdc (RX)
5Vdc (TX)
C141
100pF
R26
*
R27
10
R129
4.7K
1
2
CR11
C103
10uF
6.5Vdc (TX)
Q105
L9
27nH
C11
.01uF
B+
E101
57R01
C105
L102
*
2
VCNTRL
RFIN
100pF
1
NC
C107
*
C104
C116
*
C101
.022uF100pF
3
B_POS
P.A.
U105
RFOUT
85Y11
4
NC
L103
*
C108
*
Q101
*
C109
C110
C123
0.1uF
5
4
5Vdc
3
C126
3.3uF
L10
12nH
C18
9.1pF
*
1
-46dBm
-18dBm
5Vdc (TX)
0Vdc (RX)
5V REG
OUT
(NOTE 4)
C19
5.6pF
*
U103
C4
100pF
GND
2
E2
A3
D1
C5
R106
3.3K
2.45Vdc (TX)
C139
B2
*
C5
6.8pF
0Vdc (RX)
C128
1uF
L12
27.42nH
C89C88
4.3pF
C6
5.1pF
C16
30pF
100pF
L13
19.61nH
3
IN
1
TP10
L11
11.03nH
56pF
ICATH_2
RE_DET
TX12
DA_REF
B1
ANT_SW_BS
CATH_1
L16
470nH
C7
11pF
C90
8.2pF
R130
L101
270nH
*
R107
C127
*
*
D3
A2
11.03nH
C91
15pF
B+
NC
E3
E4
BPOS
RECV_5V
U101
TX ALC IC
ANODE_1
GND
D4
B3
C135
100pF
L14
C92
1.8pF
NC
C1
PA_BIAS
BIAS_EN
A4
C106
4.7uF
BIAS_RT
TEMP_SENSE
INT_CAP_OUT
INT_CAP_IN
3.3Vdc (TX)
100pF
-50dBm
11.03nH
C94
12pF
2.2Vdc (TX)
6.8Vdc (TX)
7.5Vdc (RX)
4.9Vdc (TX)
0Vdc (RX)
PA_OUT
PA_CNTL
ANODE_2
5V_TX
(NOTE 4)-31dBm
L15
C93
5.1pF
RX_1
.047uF
C157
0.1uF
R52
100
C115
C99
5.6pF
B4
B5
C2
D2
D5
C4
C3
Q110
NC
NC
1.5Vdc (TX)
0.4Vdc (RX)
100pF
4
5
C98
20pF
B+
TX_LO
LCK
DAC
DAC
CLK
CLK
D
R102
C17C12
0.1uF
T1
0Vdc (TX)
C85C83
10uF
3
2
1
C113
100pF
4.7K
R7
100
4.9Vdc (RX)
0.1Vdc (TX)
8
RF1
7
RF2
14
LOIN
1
2.8Vdc (TX)
0Vdc (RX)
C111
100pF
3
BVDD
U2
MIXER
BUFFER
GND5GND16GND29GND310GND413GND5
BBP
BDIV
IFN
IFP
50K
RT101
C31
.01uFC15
11
12
2
4
4Vdc
C84
.01uF
63B81097C04-O
5V_REG
T2
1
2
3
1Vdc
C82
.01uF
Sheet 1 of 2
SB+
B+
5
4
DATA
SB+
B+
5V_REG
AGC
IF
-22dBm (RX)
0.5Vdc
RX_LO
NUE7267B, NUE7268B, NUE/PMUE7273B, AND NUE7275B UHF (450-520MHz)
72
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 1 of 2)
NC
-7.6 Vdc(Rx) (Note 6)
-7.8 Vdc(Tx) (Note 6)
Else 0 Vdc (Note 7)
L223
390nH
-9dBm
3Vdc (TX)
0Vdc (RX)
TX_LO
RX_LO
AGC
IF
C245
DC5V4
U204
GND2
Q202
C208
100pF
-18dBm
4.5Vdc
0
1
2325
DC5V3
GND1
44
R203
1000pF
11
DC5V1
DC5V2
FREFOUT
IADAPT
AD_BYPASS
MODOUT
R_GND1
R_GND2
43
31
10
L219
18nH
C236
4.3pF
R204
10K
R206
10K
L216
15nH
CLK
XTAL2
XTAL1
MODIN
DATA
IOUT
EN_CE
PVREF
WARP
SBASE
CAP
EN
C219
3.3pF
R221
10
3
15
14
5
2
32
34
4
24
NC
12
NC
16
NC
18
NC
17
30
C235
5.1pF
2.6Vdc
C221
.01uF
-12dBm(TX)
2.8Vdc
C220
6.2pF
1.2K
NC
D
R205
15K
C237
3.3pF
R208
2.4K
CLK
2.3Vdc
SYN
14.5nH
C223
4.5pF
5Vdc
100pF
C216
3300pF
C253
10uF
C238
100pF
L210
C222
4.3pF
C289
2.1MHz
C217
100pF
C206
2200pF
C275
0.1uF
C247
0.47uF
C225
1pF
R211
150
R212
750
C239
6.8pF
C243
6.8pF
C279
100pF
C287
.022uF
L207
150nH
L218
390nH
C303
.022uF
L222
270nH
L211
9 nH
C2585V_REGSB+
4.7uF
CR206
C284
0.22uF
L224
33nH
C267
.01uF
C201
1pF
C270
1000pF
C271
4.7uF
1
K1
CR205
A1
65A24
L220
27nH
C292
1pF
2K23
C204
100pF
1
2
3
K3
K1
K2
K3
C257
.01uF
A3
1000pF
C202
Q201
S
D
C250
*
R215
43K
L201
18nH
CR204
L204
390nH
C266
.01uF
R218
100K
C214
3pF
13Vdc
6
A1
5
A2
4
A3
C256
.01uF
5V
0V
5Vpp (N0te 6)
0Vdc (Rx, Tx) (Note 7)
Else 4.4 Vdc (Note 6)
LCK
1.7Vdc (RX) 1.6Vdc (TX)
R214
43K
C294
100pF
C211
100pF
1.6 Vdc-23 dBm
L205
18nH
0.7Vdc (RX)
4.3Vdc (TX)
4.6Vdc
R220
2K
R223
47K
3.3Vdc
1.4Vdc
16
15
RBY
4
TX_OUT
2
RX_OUT
C203
1.5pF
C205
2.2Vdc (RX)
0.1Vdc (TX)
R210
330
14
*
1.9Vdc (TX)
8
9
7
6
26
NC
27
NC
37
NC
39
40
NC
35
NC
41
29
28
19
21
38
C290
L221
100pF
390nH
7
5
S1
PS
TRB
U201
VCO BUFFER
GND13GND11NC
S2
8
12
NC
L215
390nH
VMULT2
VMULT1
VMULT3
VMULT4
TST1
TST2
AUX1
AUX3
AUX4
ADAPTTSW
LOCK
CPBIAS1
CPBIAS2
SOUT
PREIN
AUX2
L208
390nH
2Vdc(RX)
R209
470
0.1Vdc (RX)
2.25Vdc (TX)
C209
.01uF
10
VC
VCC
SV1
B2
E2
11
20
36
42
SIN
VCP
SYNTHESIZER
GND3
GND4
13
22
33
-8dBm
3
6
9
C
R217
15K
R219
C240
4.5pF
R207
68K
C230
*
C280
0.1uF
R213
470
C226
9.1pF
CR203
*
C274
C260
.047uF
*
R211
C288
.01uF
CR207 CR208
CR201
CR209
C231
10uF
CR202
L212
18nH
C228
100pF
390nH
C227
100pF
L209
390nH
L213
4Vpp
16.8MHz
C246
.022uF
C244
.022uF
C233
100pF
10
FOUT
8
DET
12
VOPT
11
VREG
26
GND
1
NC1
2
NC2
3
NC3
0V OR 5Vdc UNLOCK
2.0Vdc typical
(shield in place)
R18
200K
TP5
1
4.9(RX)Vdc @ 450MHz
5.2(TX)Vdc @ 450MHz
6.1(RX)Vdc @ 512MHz
7.4(TX)Vdc @ 512MHz
7.7(RX)Vdc @ 520MHz
9.2(TX)Vdc @ 520MHz
2.5Vdc
23
13
9
DE
VDD
NC44NC55NC66NC7
C52
.018uF
C53
0.15uF
TP5 VCTRL
NC
14
CE
U203
REF OSC
16.8 MHz
15
CR5
VDD2
NC
R16
2.7K
27
NC1220NC13
NC816NC9
17
NC
7
NCNC
21
CEXT
NC1018NC11
19
R17
20K
C54
39pF
L24
180nH
R51
1.2K
SO
S1
SCK
SS
NC18
NC17
NC16
NC15
NC14
C55
33pF
3
4.6Vdc (NOTE 5)
25
22
24
32
31
30
29
28
CR12
D
C64
0.1uF
10K
R53
L36
150nH
2.5Vdc
R35
47K
C59
.01uF
CLK
1
2
16.8MHz
R34
47K
L23
560nH
R40
470
2.2uH
C56
43pF
1.7Vdc
C57
43pF
2.2uH
R41
22
R42
470
L202
1
5V_REG
L25
1 Vpp
C65
4700pF
C282
0.1uF
3
2
R43
-53dBm (NOTE 5)
*
using 10 pF
C60
0.1uF
-44dBm (NOTE 5)
C35
R32
2.7K
-23dBm
3.8Vdc
(NOTE5)
Q1
R33
2.7K
L20
470nH
*
C254
4.7uF
1.6Vdc
C61
0.1uF
C58
2.2pF
73.35MHz
2.8Vdc
C95
8.2pF
3.4Vdc
C36
5.1pF
C255
0.1uF
.022uF
C63
0.1uF
C40
100pF
C41
0.1uF
C210
1.6Vdc
C51
0.1uF
FREQ=73.35MHz
1
IN
2
1
OUTPUT
5
ERRORFEEDBACK
NC
2
SENSE3SHUTDOWN
6
5V_TAP
C96
.01uF
C49
0.33uF
17
+5V3
13
+5V2
12
Vpp
11
+5V1
6
DM_IN
5
PEAMP_OUT
4
PEAMP_5V
10
RSSI_FLT
7
DM_BYP
40
AGC
2.5V
30
39
2.5Vdc
C46
0.22uF
R47
22
R50
1.5K
FL1
OUT
GND4GND1
U202
5V REG
GND
4
14
18
23
+5V4
LO_IN
+2.5V2
GND18GND215GND316GND4
1
Q4
1
R46
47K
3
R48
*
22
Vc
32
INPUT
25
16.8MHz
U3
ZIF
L22
470nH
D
19
VIBYPASS
GND526GND6
41 3
2.0Vdc
C38
10pF
8
7
5V_REG
3.4Vdc
20
21
CLK
DATA
GND_PREAMP
2
C125
3.3uF
Q5
R1=47K
29
CE
SQ
C4NEG
C4POS
C3NEG
C3POS
C2NEG
C2POS
C1NEG
C1POS
DISC
RAMPCAP
+2.5V1
PREAMPIN
RSSI_OUT
9
R49
15K
-36dBm (RX)
(NOTE 5)
1.4Vdc
C50
.01uF
R44
680
1.0A
32V
7.5Vdc
LCK
DURING
PROGRAMING
PINS 31-38 = 2.5Vdc
31
32
33
34
35
36
37
38
28
24
27
2.5Vdc
C47
0.1uF
C39
1.8pF
F1
1A
LOCK=5V
UNLOCK=0V
CLK
51K
C45
0.22uF
C44
0.22uF
C43
0.22uF
C42
0.22uF
C48
430pF
C315
100pF
L301
390nH
R45
SYN
2.3Vdc
1.2Vdc
2.9Vdc (RX) (NOTE 3)
2.1MHz
DAC
GND
C304
100pF
D
B+
1
BATT+
2
BATT-
3
IS_B+
C313
C311
3300pF
C305
100pF
C309
3300pF
C307
100pF
C308
100pF
*
C306
100pF
C310
100pF
390nH
L302
*
C314
NC
J301-1
J301-20
J301-2
J301-3
J301-5
J301-4
J301-15
J301-14
J301-12
J301-17
1kHz
280mVpp/kHz
DEVIATION
J301-10
J301-11
J301-13
J301-7
J301-6
J301-8
J301-9
J301-16
J301-18
J301-19
RAW_B+
RAW B+
SW_B+
VCO_MOD
REF_OSC_SEL
LOCK_DET
CLOCK
IF_SEL
SQ_OUT
SYN_SEL
DISC
RSSI
2.1/2.4_MHZ
1200mVpp
DAC_SEL
DATA
GND
GND
GND
GND
GND
63B81097C04-O
Sheet 2 of 2
TO P301
5V
NUE7267B, NUE7268B, NUE/PMUE7273B, AND NUE7275B UHF (450-520MHz)
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 2 of 2)
73
MEDIA & COMMUNICATIONS DEPT.
Jedi 800/900 RF 8405108X38.J
ILLUSTRATORDATEENGINEERDATEPROGRAMDISK
JP12/19/97
EDITORDATECHECKERDATE
JWB
LETTERING SIZE:REQUIRES:
DWG. NO.
MAEPF-26305
IllustratorCORRECTED
ASMARKED
ISS.
O
MAEPF-26304-O
REVISION
O.K. AS ISO.K. AS MARKED
RLSE.
CHECK
ONE
( )
( )
RLSE.
NUF6410B/C, NUF6498B/C, NUF6500B/C AND NUF6501C (800MHz)
TRANSCEIVER BOARDS’ PARTS LIST AND COMPONENT LOCATION DIAGRAMS
74
MAEPF-26305-O
Electrical Parts List, Transceivers (800MHz)
NUF6410B/C, NUF6498B/C, NUF6500B/C AND NUF6501C