This manual covers all models of the ASTRO® APXTM1000/APXTM2000/APXTM4000/APXTM4000 Li digital portable
radio, unless otherwise specified. It includes all the information necessary to maintain peak product performance and
maximum working time, using levels 1 and 2 maintenance procedures. This level of service goes down to the board
replacement level and is typical of some local service centers, self-maintained customers, and distributors.
For details on radio operation or component-level troubleshooting, refer to the applicable manuals available separately. A
list of related publications is provided in the section, “ Related Publications” on page vi.
Product Safety and RF Exposure Compliance
Before using this product, read the operating instructions
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 requirements.
Before using this product, read the guide enclosed with your radio which contains important operating
instructions for safe usage and RF energy awareness and control for compliance and applicable
standards and regulations.
For a list of Motorola-approved antennas, batteries, and other accessories, visit the following
web site: www.motorolasolutions.com/APX
Manual Revisions
Changes which occur after this manual is printed are described in FMRs (Florida Manual Revisions). These FMRs provide
complete replacement pages for all added, changed, and deleted items, including pertinent parts list data, schematics, and
component layout diagrams. To obtain FMRs, contact the Customer Care and Services Division (refer to “Appendix B
Replacement Parts Ordering”).
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 copyrighted computer programs, including, but not limited to, the exclusive right to copy or reproduce in
any form the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the
Motorola products described in this manual may not be copied, reproduced, modified, reverse-engineered, 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 distribution of this document or any portion thereof shall take place without the express written permission
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 this document is carefully examined, and is believed to be entirely reliable. However, no responsibility 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.
The following major changes have been implemented in this manual since the previous edition:
EditionDescriptionDate
68012004056-AInitial editionNov. 2011
68012004056-B1) Added information for VHF and UHF2
• Model Chart and Specifications
• Chapter 3: Basic Theory of Operation
• Chapter 5: Performance Checks
• Chapter 6: Radio Alignment Procedures
68012004056-C1
APX 4000Li
•
• Chapter 3: Basic Theory of Operation
• Chapter 5: Performance Checks
• Chapter 6: Radio Alignment Procedures
• Chapter 10: Exploded Views and Parts Lists
68012004056-D1) Updated APX 4000Li Model 2 information
•
2)Updated Model Numbering Chart
3)Updated Chapter 4: Recommended Test Equipmen
a
no.
4)
68012004056-E1
2)
d information for 900 MHz, Mode
) Adde
Model Chart and Specifications
Model Chart
nd Service Aids. Changed CPS and Tuner software part
dated Chapter 10: Exploded Views and Parts List
Up
) Up
dated Model Chart.
dated Chapter 10: Exploded Views and Parts List
Up
l 1.5,
Feb. 2012
Nov. 2012
June 2013
t
Nov. 2013
68012004056-F1) Added information for Soldier Green
• Model Chart and Specifications
• Updated Chapter 10: Exploded Views and Parts List
2) Added information for APX
68012004056-G1) Added information for APX 1000 (900 MHz)
2) Added information for APX 2000/ APX 4000 Two
Knobs
3) Added information for APX 1000 (VHF and UHF2)
3) APX 2000/ APX 4000/ APX 4000Li: Removed “Immersibility Test”, updated “Test Procedure” and removed item
21 (0402838X01) from “Exploded View” and “Exploded
View Parts List”
1000
Jun. 2014
Dec. 2014
Page 5
Commercial Warrantyiii
Commercial Warranty
For details on the regional Motorola Service Centers, Replacement Parts Ordering and Technical Support
assistance, refer to the relevant regions in the Appendix section of this manual.
Product Safety and RF Exposure Compliance ............................................................................................ii
Manual Revisions ........................................................................................................................................ ii
Document Copyrights .................................................................................................................................. ii
Disclaimer.................................................................................................................................................... ii
Trademarks ................................................................................................................................................. ii
Document History ..........................................................................................ii
Chapter 4Recommended Test Equipment and Service Aids .......... 4-1
4.1Recommended Test Equipment .................................................................................................... 4-1
4.2Service Aids ................................................................................................................................... 4-2
H52KDH9PW7ANModel 3 APX2000, 136–174MHz, 1–5 Watts, Full Keypad
H51KDH9PW7ANModel 3 APX4000, 136–174MHz, 1–5 Watts, Full Keypad
VHF, APX 2000/APX 4000/APX 4000Li
AZ489FT3825
AZ489FT3828
ITEM NUMBERDESCRIPTION
XXPMLN6448_Assembly, Front Kit, Model 1.5
XXPMLN5907_Assembly, Front Kit, Model 2
XXPMLN5903_Assembly, Front Kit, Model 3
XXXXXX0378212A02Screw, Retainer, Keypad
XXXXXX42012056001Retainer, Keypad
XX75012207001Keypad, Model 1.5
XX75012114003Keypad, Model 2
XX75012114001Keypad, Model 3 (English)
XX75012114002Keypad, Model 3 (Chinese)
XX75012114004Keypad, Model 3 (Cyrillic)
XX75012114005Keypad, Model 3 (Arabic)
XX75012114006Keypad, Model 3 (Hebrew)
XXPMLN6458_Assembly, Keypad Board, Model 1.5, Base
XXPMLN6210_Assembly, Keypad Board, Model 2, Base
XXPMLN6211_Assembly, Keypad Board, Model 2, Expanded
XXPMLN6212_Assembly, Keypad Board, Model 3, Base
XXPMLN6209_Assembly, Keypad Board, Model 3, Expanded
XX40012085001Mylar with Metal Domes, Model 1.5 Keypad
XX40012056002Mylar with Metal Domes, Model 2 Keypad
XX40012056001Mylar with Metal Domes, Model 3 Keypad
XXXXXX0104059J61Assembly, Flex, Back Mic
XXXXXX35012068001Membrane, Back Mic
XXXXXX32012282001Boot, Back Mic
XXXXXX64012022001Backer, Back Mic
XXXXXX27012020002Chassis
XXXXXX32012150001Seal, Battery Contact
XXXXXX15012140001Shroud
XXXXXX32012156001O-ring, Main
XXXXXXPMLN6329_WWP, Assembly, Main Board (VHF)*
XXXXXX7515719H02Pad, Thermal, RF PA
XXXXXX43012045001Collar, Plastic
XXXXXX6071520M01Coin Cell
XXXX0104043J76Assembly, Flex, Back-kit (Model 2 and Model 3)
XX0104055J99Assembly, Flex, Back-kit (Model 1.5)
XXXXXX0104046J48Assembly, Shield, Secondary
XXXXXX0386104Z04Screw, Chassis
XXXXXX3286058L01Seal, Vacuum Port
Note:
X = Item Included.
Appendix A for antennas, batteries and other applicable accessories.
• Refer
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS to
read a Model 1.5, II, or III radio.
Page 18
xiiASTRO APX 2000/APX 4000/APX 4000Li VHF Model Chart (Continued)
ASTRO APX 2000/APX 4000/APX 4000Li VHF Model Chart (Continued)
MODEL DESCRIPTION:
Non-BT Models FCC ID:
BT Models FCC ID
H52KDD9PW5ANModel 1.5 APX2000, 136–174MHz, 1–5 Watts, Standard Control
H51KDD9PW5ANModel 1.5 APX4000 Li, 136–174MHz, 1–5 Watts, Standard Control
XXXXXX36012020002Knob, Multi Function
XXXXXX15012142001Cover, Accessory-Connector
XXXXXXPMLN5997_User Guide CD, APX 2000 and APX 4000
OOOO54012230001Label, FM
Note:
X = Item Included.
● = Option available. Can be serviced in depot and ordered thru AAD.
O = Option available. Can be serviced in depot and orderable by FM qualified customers/dealers only. For APAC – Only FM label can be replaced
and purchased by Motorola.
• Refer
Appendix A for antennas, batteries and other applicable accessories.
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS to
read a Model 1.5, II, or III radio.
Page 19
ASTRO APX 2000/APX 4000/APX 4000Li UHF1 Model Chart xiii
ASTRO APX 2000/APX 4000/APX 4000Li UHF1 Model Chart
MODEL DESCRIPTION:
Non-BT Models FCC ID:
BT Models FCC ID:
H52QDD9PW5ANModel 1.5 APX2000, 380–470MHz, 1–5 Watts, Standard Control
H51QDD9PW5ANModel 1.5 APX4000 Li, 380–470MHz, 1–5 Watts, Standard Control
H52QDH9PW7ANModel 3 APX2000, 380–470MHz, 1–5 Watts, Full Keypad
H51QDH9PW7ANModel 3 APX4000, 380–470MHz, 1–5 Watts, Full Keypad
UHF1, APX 2000/APX 4000/APX 4000Li
AZ489FT4907
AZ489FT4905
ITEM NUMBERDESCRIPTION
XXPMLN6448_Assembly, Front Kit, Model 1.5
XXPMLN5907_Assembly, Front Kit, Model 2
XXPMLN5903_Assembly, Front Kit, Model 3
XXXXXX0378212A02Screw, Retainer, Keypad
XXXXXX42012056001Retainer, Keypad
XX75012207001Keypad, Model 1.5
XX75012114003Keypad, Model 2
XX75012114001Keypad, Model 3 (English)
XX75012114002Keypad, Model 3 (Chinese)
XX75012114004Keypad, Model 3 (Cyrillic)
XX75012114005Keypad, Model 3 (Arabic)
XX75012114006Keypad, Model 3 (Hebrew)
XXPMLN6458_Assembly, Keypad Board, Model 1.5, Base
XXPMLN6210_Assembly, Keypad Board, Model 2, Base
XXPMLN6211_Assembly, Keypad Board, Model 2, Expanded
XXPMLN6212_Assembly, Keypad Board, Model 3, Base
XXPMLN6209_Assembly, Keypad Board, Model 3, Expanded
XX40012085001Mylar with Metal Domes, Model 1.5 Keypad
XX40012056002Mylar with Metal Domes, Model 2 Keypad
XX40012056001Mylar with Metal Domes, Model 3 Keypad
XXXXXX0104059J61Assembly, Flex, Back Mic
XXXXXX35012068001Membrane, Back Mic
XXXXXX32012282001Boot, Back Mic
XXXXXX64012022001Backer, Back Mic
XXXXXX27012020002Chassis
XXXXXX32012150001Seal, Battery Contact
XXXXXX15012140001Shroud
XXXXXX32012156001O-ring, Main
XXXXXXPMLN6214_Assembly, Main Board (UHFr1)*
XXXXXX7515719H02Pad, Thermal, RF PA
XXXXXX43012045001Collar, Plastic
XXXXXX6071520M01Coin Cell
XXXX0104043J76Assembly, Flex, Back-kit (Model 2 and Model 3)
XX0104055J99Assembly, Flex, Back-kit (Model 1.5)
XXXXXX0104046J48Assembly, Shield, Secondary
XXXXXX0386104Z04Screw, Chassis
XXXXXX3286058L01Seal, Vacuum Port
Note:
X = Item Included.
Appendix Afor antennas, batteries and other applicable accessories.
• Refer
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS to
read a Model 1.5, II, or III radio.
Page 20
xivASTRO APX 2000/APX 4000/APX 4000Li UHF1 Model Chart (Continued)
ASTRO APX 2000/APX 4000/APX 4000Li UHF1 Model Chart (Continued)
MODEL DESCRIPTION:
Non-BT Models FCC ID:
BT Models FCC ID:
H52QDD9PW5ANModel 1.5 APX2000, 380–470MHz, 1–5 Watts, Standard Control
H51QDD9PW5ANModel 1.5 APX4000 Li, 380–470MHz, 1–5 Watts, Standard Control
XXXXXX36012020002Knob, Multi Function
XXXXXX15012142001Cover, Accessory-Connector
XXXXXXPMLN5997_User Guide CD, APX 2000 and APX 4000
OOOO54012230001Label, FM
Note:
X = Item Included.
● = Option available. Can be serviced in depot and ordered thru AAD.
O = Option available. Can be serviced in depot and orderable by FM qualified customers/dealers only. For APAC – Only FM label can be replaced
and purchased by Motorola.
• Refer
Appendix A for antennas, batteries and other applicable accessories.
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS to
read a Model 1.5, II, or III radio.
Page 21
ASTRO APX 2000/APX 4000/APX 4000Li UHF2 Model Chart xv
ASTRO APX 2000/APX 4000/APX 4000Li UHF2 Model Chart
MODEL DESCRIPTION:
Non-BT Models FCC ID:
BT Models FCC ID:
H52SDD9PW5ANModel 1.5 APX2000, 450–520MHz, 1–5 Watts, Standard Control
H51SDD9PW5ANModel 1.5 APX4000 Li, 450–520MHz, 1–5 Watts, Standard Control
H52SDH9PW7ANModel 3 APX2000, 450–520MHz, 1–5 Watts, Full Keypad
H51SDH9PW7ANModel 3 APX4000, 450–520MHz, 1–5 Watts, Full Keypad
UHF2, APX 2000/APX 4000/APX 4000Li
AZ489FT4909
AZ489FT4910
ITEM NUMBERDESCRIPTION
XXPMLN6448_Assembly, Front Kit, Model 1.5
XXPMLN5907_Assembly, Front Kit, Model 2
XXPMLN5903_Assembly, Front Kit, Model 3
XXXXXX0378212A02Screw, Retainer, Keypad
XXXXXX42012056001Retainer, Keypad
XX75012207001Keypad, Model 1.5
XX75012114003Keypad, Model 2
XX75012114001Keypad, Model 3 (English)
XX75012114002Keypad, Model 3 (Chinese)
XX75012114004Keypad, Model 3 (Cyrillic)
XX75012114005Keypad, Model 3 (Arabic)
XX75012114006Keypad, Model 3 (Hebrew)
XXPMLN6458_Assembly, Keypad Board, Model 1.5, Base
XXPMLN6210_Assembly, Keypad Board, Model 2, Base
XXPMLN6211_Assembly, Keypad Board, Model 2, Expanded
XXPMLN6212_Assembly, Keypad Board, Model 3, Base
XXPMLN6209_Assembly, Keypad Board, Model 3, Expanded
XX40012085001Mylar with Metal Domes, Model 1.5 Keypad
XX40012056002Mylar with Metal Domes, Model 2 Keypad
XX40012056001Mylar with Metal Domes, Model 3 Keypad
XXXXXX0104059J61Assembly, Flex, Back Mic
XXXXXX35012068001Membrane, Back Mic
XXXXXX32012282001Boot, Back Mic
XXXXXX64012022001Backer, Back Mic
XXXXXX27012020002Chassis
XXXXXX32012150001Seal, Battery Contact
XXXXXX15012140001Shroud
XXXXXX32012156001O-ring, Main
XXXXXXPMLN6328_Assembly, Main Board (UHFr2)*
XXXXXX7515719H02Pad, Thermal, RF PA
XXXXXX43012045001Collar, Plastic
XXXXXX6071520M01Coin Cell
XXXX0104043J76Assembly, Flex, Back-kit (Model 2 and Model 3)
XX0104055J99Assembly, Flex, Back-kit (Model 1.5)
XXXXXX0104046J48Assembly, Shield, Secondary
XXXXXX0386104Z04Screw, Chassis
XXXXXX3286058L01Seal, Vacuum Port
Note:
X = Item Included.
Appendix Afor antennas, batteries and other applicable accessories.
• Refer
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS to
read a Model 1.5, II, or III radio.
Page 22
xviASTRO APX 2000/APX 4000/APX 4000Li UHF2 Model Chart (Continued)
ASTRO APX 2000/APX 4000/APX 4000Li UHF2 Model Chart (Continued)
MODEL DESCRIPTION:
Non-BT Models FCC ID:
BT Models FCC ID:
H52SDD9PW5ANModel 1.5 APX2000, 450–520MHz, 1–5 Watts, Standard Control
H51SDD9PW5ANModel 1.5 APX4000 Li, 450–520MHz, 1–5 Watts, Standard Control
XXXXXX36012020002Knob, Multi Function
XXXXXX15012142001Cover, Accessory-Connector
XXXXXXPMLN5997_User Guide CD, APX 2000 and APX 4000
OOOO54012230001Label, FM
Note:
X = Item Included.
● = Option available. Can be serviced in depot and ordered thru AAD.
O = Option available. Can be serviced in depot and orderable by FM qualified customers/dealers only. For APAC – Only FM label can be replaced
and purchased by Motorola.
• Refer
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
Appendix A for antennas, batteries and other applicable accessories.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS to
read a Model 1.5, II, or III radio.
Page 23
ASTRO APX 2000/APX 4000/APX 4000Li 700/800 MHz Model Chart xvii
ASTRO APX 2000/APX 4000/APX 4000Li 700/800 MHz Model Chart
MODEL DESCRIPTION:
Non-BT Models FCC ID:
BT Models FCC ID:
H52UCD9PW5ANModel 1.5 APX2000, 764–870MHz, 1.0–3.9 Watts, Standard Control
H51UCD9PW5ANModel 1.5 APX4000 Li, 764–870MHz, 1.0–3.9 Watts, Standard Control
H52UCH9PW7ANModel 3 APX2000, 764–870MHz, 1.0–3.9 Watts, Full Keypad
H51UCH9PW7ANModel 3 APX4000, 764–870MHz, 1.0–3.9 Watts, Full Keypad
700–800, APX 2000/APX 4000/APX 4000Li
AZ489FT7050
AZ489FT7049
ITEM NUMBERDESCRIPTION
XXPMLN6448_Assembly, Front Kit, Model 1.5
XXPMLN5907_Assembly, Front Kit, Model 2
XXPMLN5903_Assembly, Front Kit, Model 3
XPMLN6848_Assembly, Front Kit, Model 2, Soldier Green
XPMLN6849_Assembly, Front Kit, Model 3, Soldier Green
XXXXXX0378212A02Screw, Retainer, Keypad
XXXXXX42012056001Retainer, Keypad
XX75012207001Keypad, Model 1.5
XX75012114003Keypad, Model 2
XX75012114001Keypad, Model 3 (English)
XX75012114002Keypad, Model 3 (Chinese)
XX75012114004Keypad, Model 3 (Cyrillic)
XX75012114005Keypad, Model 3 (Arabic)
XX75012114006Keypad, Model 3 (Hebrew)
XXPMLN6458_Assembly, Keypad Board, Model 1.5, Base
XXPMLN6210_Assembly, Keypad Board, Model 2, Base
XXPMLN6211_Assembly, Keypad Board, Model 2, Expanded
XXPMLN6212_Assembly, Keypad Board, Model 3, Base
XXPMLN6209_Assembly, Keypad Board, Model 3, Expanded
XX40012085001Mylar with Metal Domes, Model 1.5 Keypad
XX40012056002Mylar with Metal Domes, Model 2 Keypad
XX40012056001Mylar with Metal Domes, Model 3 Keypad
XXXXXX0104059J61Assembly, Flex, Back Mic
XXXXXX35012068001Membrane, Back Mic
XXXXXX32012282001Boot, Back Mic
XXXXXX64012022001Backer, Back Mic
XXXXXX27012020002Chassis
XXXXXX32012150001Seal, Battery Contact
XXXXXX15012140001Shroud
XXXXXX32012156001O-ring, Main
XXXXXXPMLN6213_Assembly, Main Board (7_800)*
XXXXXX7515719H02Pad, Thermal, RF PA
XXXXXX43012045001Collar, Plastic
XXXXXX6071520M01Coin Cell
XXXX0104043J76Assembly, Flex, Back-kit (Model 2 and Model 3)
XX0104055J99Assembly, Flex, Back-kit (Model 1.5)
XXXXXX0104046J48Assembly, Shield, Secondary
XXXXXX0386104Z04Screw, Chassis
XXXXXX3286058L01Seal, Vacuum Port
Note:
X = Item Included.
• Refer
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
Appendix A for antennas, batteries and other applicable accessories.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS to
read a Model 1.5, II, or III radio.
Page 24
xviiiASTRO APX 2000/APX 4000/APX 4000Li 700/800 MHz Model Chart (Continued)
ASTRO APX 2000/APX 4000/APX 4000Li 700/800 MHz Model Chart
(Continued)
MODEL DESCRIPTION:
Non-BT Models FCC ID:
BT Models FCC ID:
H52UCD9PW5ANModel 1.5 APX2000, 764–870MHz, 1.0–3.9 Watts, Standard Control
H51UCD9PW5ANModel 1.5 APX4000 Li, 764–870MHz, 1.0–3.9 Watts, Standard Control
XXXXXX36012020002Knob, Multi Function
XXXXXX15012142001Cover, Accessory-Connector
XXXXXXPMLN5997_User Guide CD, APX 2000 and APX 4000
OOOO54012230001Label, FM
Note:
X = Item Included.
● = Option available. Can be serviced in depot and ordered thru AAD.
O = Option available. Can be serviced in depot and orderable by FM qualified customers/dealers only. For APAC – Only FM label can be replaced
and purchased by Motorola.
• Refer
Appendix A for antennas, batteries and other applicable accessories.
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS to
read a Model 1.5, II, or III radio.
H51WCH9PW7ANModel 3 APX4000, 896–941MHz, 1.0–3.9 Watts, Full Keypad
900 MHz, APX 4000
AZ489FT5864
ITEM NUMBERDESCRIPTION
XPMLN5907_Assembly, Front Kit, Model 2
XPMLN5903_Assembly, Front Kit, Model 3
XX0378212A02Screw, Retainer, Keypad
XX42012056001Retainer, Keypad
X75012114003Keypad, Model 2
X75012114001Keypad, Model 3 (English)
X75012114002Keypad, Model 3 (Chinese)
X75012114004Keypad, Model 3 (Cyrillic)
X75012114005Keypad, Model 3 (Arabic)
X75012114006Keypad, Model 3 (Hebrew)
XPMLN6211_Assembly, Keypad Board, Model 2, Expanded
XPMLN6209_Assembly, Keypad Board, Model 3, Expanded
X40012056002Mylar with Metal Domes, Model 2 Keypad
X40012056001Mylar with Metal Domes, Model 3 Keypad
XX0104059J61Assembly, Flex, Back Mic
XX35012068001Membrane, Back Mic
XX32012282001Boot, Back Mic
XX64012022001Backer, Back Mic
XX27012020002Chassis
XX32012150001Seal, Battery Contact
XX15012140001Shroud
XX32012156001O-ring, Main
XXPMLN7028_Assembly, Main Board (900 MHz)*
XX7515719H02Pad, Thermal, RF PA
XX43012045001Collar, Plastic
XX6071520M01Coin Cell
XX0104043J76Assembly, Flex, Back-kit (Model 2 and Model 3)
XX0104046J48Assembly, Shield, Secondary
XX0386104Z04Screw, Chassis
XX3286058L01Seal, Vacuum Port
XX5478220A01Label, Ventilation
●●54012196001Label, Front_NamePlate (Bluetooth Blue Dot – Expanded)
●●54012198002Label, Back (APX 4000)
XX54012241001Label, Bottom
●●54012255001Label, Front, Color Talk Group
OO54012230001Label, FM
XX36012020002Knob, Multi Function
XX15012142001Cover, Accessory-Connector
XXPMLN5997_User Guide CD, APX 2000 and APX 4000
Note:
X = Item Included.
● = Option available. Can be serviced in depot and ordered thru AAD.
O = Option available. Can be serviced in depot and orderable by FM qualified customers/dealers only. For APAC – Only FM label can be
replaced and purchased by Motorola.
• Refer
Appendix A for antennas, batteries and other applicable accessories.
* The radio’s model number and FLASHcode are required when placing an order for the Main Board.
• The model number and (sometimes) the FLASHcode can be found on the FCC label on the back of the radio.
• The model number and the FLASHcode can be found by putting a Model 1.5, 2 or 3 radio into the Test Mode.
• The model number and FLASHcode can be found by using the Programming Cable (PMKN4012B or PMKN4013C) and the CPS
to read a Model 1.5, II, or III radio.
Page 26
xxSpecifications for APX 2000/APX 4000/APX 4000Li VHF Radios
Specifications for APX 2000/APX 4000/APX 4000Li VHF Radios
All specifications are per Telecommunications Industries Association TIA-603 unless otherwise
noted.
GENERALRECEIVERTRANSMITTER
Temperature Range:
Operating:-30°C to +60°C
Storage:-40°C to +85°C
Power Supply:
Lithium-Ion Battery (Li-Ion)
Battery Voltage:
Nominal:7.5 Vdc
Range:6 to 9 Vdc
Transmit Current Drain (Typical):1960 mA
Receive Current Drain (Rated Audio): 293 mA
Standby Current Drain:133 mA
Recommended Battery:
Li-Ion (Slim):NNTN8128_
or Li-Ion High Cap:NNTN8129_*
or Li-Ion High Cap:PMNN4424_
* FM Intrinsically Safe.
Dimensions (H x W x D):
Without Battery (Radio Only):
H = 5.26" (133 mm)
1
= 2.56" (65 mm) / 2.37" (60.2 mm)
W
2
D
= 0.77" (19.6 mm) / 1.48" (37.5 mm)
With Standard Battery:
H = 5.26" (133 mm)
1
= 2.56" (65 mm) / 2.37" (60.2 mm)
W
2
= 1.47"(37.4mm) / 1.72"(43.6mm)
D
With High Cap Battery:
H = 5.26" (133mm)
1
= 2.56"(65mm) / 2.37"(60.2mm)
W
2
= 1.69"(42.9mm) / 1.93"(48.9mm)
D
Note:
H = Height; W = Width; D = Depth
1 = (Width @ Top) / (Width @ PTT)
2 = (Depth @ Bottom) / (Depth @ PTT)
Frequency Range:136–174 MHz
Bandwidth:38 MHz
Analog Sensitivity (typical)
(12 dB SINAD):0.216µV
Digital Sensitivity (typical)
(1% BER):0.285 µV
(5% BER):0.188 µV
Intermodulation (typical):-79 dB
Selectivity
Spurious Rejection (typical):-80.3 dB
Frequency Stability
Rated Audio:
FM Hum and Noise (typical):
Distortion (typical):1 %
Channel Spacing:12.5/25 kHz
(typical):
(25 kHz Channel):-79.3 dB
(12.5 kHz Channel):-70 dB
Less Battery:9.17 oz (260g)
With Li-Ion Standard:14.47 oz (410g)
With Li-Ion High Cap:14.81 oz (420g)
Specifications subject to change without notice.
Page 30
xxivSpecifications for APX 4000 900 MHz Radios
Specifications for APX 4000 900 MHz Radios
All specifications are per Telecommunications Industries Association TIA-603 unless otherwise
noted.
GENERALRECEIVERTRANSMITTER
Temperature Range:
Operating:-30°C to +60°C
Storage:-40°C to +85°C
Power Supply:
Lithium-Ion Battery (Li-Ion)
Battery Voltage:
Nominal:7.5 Vdc
Range:6 to 9 Vdc
Transmit Current Drain (Typical):1580 mA
Receive Current Drain (Rated Audio): 306 mA
Standby Current Drain:137 mA
Recommended Battery:
Li-Ion (Slim):NNTN8128_
or Li-Ion High Cap:NNTN8129_*
or Li-Ion High Cap:PMNN4424_
* FM Intrinsically Safe.
Dimensions (H x W x D):
Without Battery (Radio Only):
H = 5.26" (133 mm)
1
= 2.56" (65 mm) / 2.37" (60.2 mm)
W
2
D
= 0.77" (19.6 mm) / 1.48" (37.5 mm)
With Standard Battery:
H = 5.26" (133 mm)
1
= 2.56" (65 mm) / 2.37" (60.2 mm)
W
2
= 1.47"(37.4mm) / 1.72"(43.6mm)
D
With High Cap Battery:
H = 5.26" (133mm)
1
= 2.56"(65mm) / 2.37"(60.2mm)
W
2
= 1.69"(42.9mm) / 1.93"(48.9mm)
D
Note:
H = Height; W = Width; D = Depth
1 = (Width @ Top) / (Width @ PTT)
2 = (Depth @ Bottom) / (Depth @ PTT)
Frequency Range:935–941 MHz
Bandwidth:6 MHz
Analog Sensitivity (typical)
(12 dB SINAD):0.236µV
Digital Sensitivity (typical)
(1% BER):0.33 µV
(5% BER):0.222 µV
Intermodulation (typical):-75 dB
Selectivity
Spurious Rejection (typical):-80 dB
Frequency Stability
Rated Audio:
FM Hum and Noise (typical):
Distortion (typical):1 %
Channel Spacing:12.5 kHz
(typical):
(12.5 kHz Channel):-67 dB
(-30+60°C; 25°C reference):±0.0001%
Internal Speaker:500 mW
External Speaker:500 mW
12.5 kHz -47 dB
Frequency Range:896–902 MHz
935–941 MHz
RF Power:
1–2.5 W
Frequency Stability (typical)
(-30 to +60°C; 25°C ref.):±0.0001%
Emission (typical conducted):-75 dBc
FM Hum and Noise (typical)
(Companion Receiver):12.5 kHz -45 dB
Distortion (typical):1%
Modulation Limiting: 12.5 kHz chnls ±2.5 kHz
ACPR (typical):12.5 kHz -66 dBc
Emissions Designators:
11K0F3E, 8K10F1D, 8K10F1E, 8K10F1W
Weight: (w/o Antenna):
Less Battery:9.17 oz (260g)
With Li-Ion Standard:14.47 oz (410g)
With Li-Ion High Cap:14.81 oz (420g)
Specifications subject to change without notice.
Page 31
Chapter 1Introduction
!
Caution
This manual contains information needed for Levels One and Two radio servicing. Level One
servicing consists of radio programming, radio alignment, knobs replacement, and installation and
removal of the antenna, belt clip, battery, and universal connector cover. Level Two servicing covers
disassembly and reassembly of the radio to replace circuit boards.
1.1Manual Contents
Included in this manual is radio specification for the VHF (136–174 MHz), UHF1 (380–470 MHz),
UHF2 (450–520 MHz), 700/800 MHz (764–870 MHz) and 900 MHz (896–941 MHz) frequency
bands, a general description of ASTRO APX 2000/ APX 4000/ APX 4000Li models, recommended
test equipment, service aids, radio alignment procedures, general maintenance recommendations,
procedures for assembly and disassembly, and exploded views and parts lists.
1.2Notations Used in This Manual
Throughout the text in this publication, you will notice the use of note, caution, warning, and danger
notations. These notations are used to emphasize that safety hazards exist, and due care must be
taken and observed.
NOTE: An operational procedure, practice, or condition that is essential to emphasize.
CAUTION indicates a potentially hazardous situation which, if
not avoided, might
WARNING indicates a potentially hazardous situation
which, if not avoided, could
DANGER indicates an imminently hazardous
situation which, if not avoided, will
injury.
result in equipment damage.
result in death or injury.
result in death or
Page 32
1-2Introduction: Radio Description
1.3Radio Description
The ASTRO APX 2000/ APX 4000/ APX 4000Li radio provides improved voice quality across more
coverage area. The digital process, called embedded signaling, intermixes system signaling
information with digital voice, resulting in improved system reliability and the capability of supporting
a multitude of advanced features.
ASTRO APX 2000/ APX 4000/ APX 4000Li radios are available in Single Display configuration.
The ASTRO APX 2000/ APX 4000/ APX 4000Li radio utilizes Motorola’s FLASHport technology.
FLASHport makes it possible to add software that drives the radio’s capabilities both at the time of
purchase and later on. Previously, changing a radio’s features and capabilities meant significant
modifications or buying a new radio. But now, similar to how a computer can be loaded with different
software, the radio’s features and capabilities can be upgraded with FLASHport software.
Page 33
Chapter 2Basic Maintenance
!
Caution
This chapter describes the preventive maintenance and handling precautions. Each of these topics
provides information vital to the successful operation and maintenance of the radio.
2.1General Maintenance
In order to avoid operating outside the limits set by the FCC, align the ASTRO APX 2000/ APX 4000/
APX 4000Li radio’s reference oscillator every time the radio is taken apart, or once per year,
whichever comes first. (See Section 6.5.1). Periodic visual inspection and cleaning is also
recommended.
2.1.1Inspection
Check 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.
2.1.2Cleaning
The following procedures describe the recommended cleaning agents and the methods to be used
when cleaning the external surfaces of the radio. External surfaces include the housing assembly
and battery case. These surfaces should be cleaned whenever a periodic visual inspection reveals
the presence of smudges, grease, and/or grime.
The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild
dishwashing detergent in water.
Use all chemicals as prescribed by the manufacturer. Be sure to follow all
safety precautions as defined on the label or material safety data sheet.
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.
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.
2.2Safe Handling of CMOS and LDMOS Devices
Complementary metal-oxide semiconductor (CMOS) and Laterally Diffused Metal Oxide
Semiconductor (LDMOS) devices, and other high-technology devices, are used in this family of
radios. While the attributes of these devices are many, their characteristics make them susceptible to
damage by electrostatic discharge (ESD) or high-voltage charges. Damage can be latent, resulting
in failures occurring weeks or months later. Therefore, special precautions must be taken to prevent
device damage during disassembly, troubleshooting, and repair. Handling precautions are
mandatory for this radio, and are especially important in low-humidity conditions.
Page 34
2-2Basic Maintenance: Safe Handling of CMOS and LDMOS Devices
!
Caution
• The APX 2000/ APX 4000/ APX 4000Li radio has a vent port that allows
for pressure equalization in the radio. Never poke this vent with any
objects, such as needles, tweezers, or screwdrivers. This could create a
leak path into the radio and the radio’s submergibility will be lost.
• The pressure equalization vent is located adjacent to the battery contact
opening of the main chassis. Never touch the equalization vent. Ensure
that no oily substances come in contact with this vent.
• The APX 2000/ APX 4000/ APX 4000Li radio is designed to be
submerged to a maximum depth of six (6) feet, with a maximum
submersion time of 2 hours per U.S. MIL-STD. Exceeding either
maximum limit may result in damage to the radio.
If the radio battery contact area has been submerged in water, dry and clean the radio battery
contacts before attaching a battery to the radio. Otherwise, the water could short-circuit the radio.
If the radio has been submerged in water, shake the radio briskly so that any water that is trapped
inside the speaker grille and microphone port can be removed. Otherwise, the water will decrease
the audio quality of the radio.
Page 35
Chapter 3Basic Theory of Operation
This chapter discusses the basic operational theory of the ASTRO APX 2000/ APX 4000 radio. The
ASTRO APX 2000/ APX 4000 radio, which is a single-band synthesized radio, is available in the
following frequency bands.
• VHF (136–174 MHz)
• UHF1 (380–470 MHz)
• UHF2 (450–520 MHz)
• 700/800 MHz (764–870 MHz)
• 900 MHz (896–941 MHz).
And the ASTRO APX 2000 M1.5, APX 4000Li M1.5 and APX 4000Li M2 is available in the following
frequency bands.
• VHF (136–174 MHz)
• UHF1 (380–470 MHz)
• UHF2 (450–520 MHz)
• 700/800 MHz (764–870 MHz)
All ASTRO APX 2000/ APX 4000/ APX4000 Li radios besides the radios with 900 MHz are capable
of analog operation (12.5 kHz or 25 kHz bandwidths), ASTRO mode (digital) operation (12.5 kHz
only), X2-TDMA mode (25 kHz only) and Phase 2 TDMA mode (12.5 kHz only).
For radios with 900 MHz, they support analog operation (12.5 kHz only), ASTRO mode (digital)
operation (12.5 kHz only), and Phase 2 TDMA mode (12.5 kHz only).
NOTE: The APX 2000 M1.5, APX 4000Li M1.5 and APX 4000Li M2 radio do not support any Global
Positioning System (GPS), Bluetooth, MACE and Accelerometer functions. As such,
disregard all references to the functions mentioned above in “Chapter 3 Basic Theory of
Operation”.
Page 36
3-2Basic Theory of Operation: Major Assemblies
A
3.1Major Assemblies
The ASTRO APX 2000/ APX 4000/ APX4000 Li radio includes the following major assemblies
(See Figure 3-1.):
• Main Board – Contains all transmit, receive, and frequency generation circuitry, including the
digital receiver back-end IC and the reference oscillator. The main board also contains a dual
core processor, which includes both the microcontroller unit (MCU) and a digital signal
processor (DSP) core, the processors's memory devices, an audio and power supply support
integrated circuit (IC), a digital support IC, external power amplifier as well as combination
Global Positioning System (GPS) and Bluetooth 2.1 IC and front end circuitry.
• Keypad Board – Contains a Type III secure IC, Bluetooth controller (AVR IC) and a 3-axes
digital accelerometer.
• Control Top – Contains a Multi-Function knob, a push button switch used for Emergency call
and a light bar. The control top also includes TX/RX LED that is solid amber upon receive, red
on PTT, and blinks amber on secure TX/RX.
• Main Display – 160 pixels x 90 pixels, transflective color LCD.
•Keypad
- Standard Control (M1.5) Keypad version has 3 soft keys
- Limited Keypad Version has 3 soft keys, 4 direction Navigation key, Home and Data buttons
- Full Keypad Version has 3 soft keys, 4 direction Navigation key, 3x4 alphanumeric keypad,
Home and Data buttons.
Basic Theory of Operation: Analog Mode of Operation3-3
Antenna
Switch
15 dB Step
Attenuator
VHFVHF
IF Filter
DIG_CTRL_ATTHRx LO
To GPS
Diplexer
SSI
18Mhz
CLK
Abacus III
ABACUS III
Dec.
Filter
ΣΔ ADC
2nd
LO
LOCLK
Antenna
Switch
15 dB Step
Attenuator
UHFUHF
IF Filter
DIG_CTRL_ATTHRx LO
To GPS
Diplexer
SSI
18Mhz
CLK
Abacus III
ABACUS III
Dec.
Filter
ΣΔ ADC
2nd
LO
LOCLK
3.2Analog Mode of Operation
This section provides an overview of the analog mode receive and transmit theory of operation.
3.2.1Receiving
The RF signal is received at the antenna and is routed through the Harmonic Filter, followed by the Antenna
Switch and finally the 15dB Step Attenuator IC. The latter contains a switchable attenuator that is enabled at
predetermined RF power thresholds present at the antenna port. See Figure 3-2.
Figure 3-5.
, Figure 3-3, Figure 3-4and
Figure 3-2. Receiver Block Diagram (VHF)
Figure 3-3. Receiver Block Diagram (UHF1/UHF2)
Page 38
3-4Basic Theory of Operation: Analog Mode of Operation
15 dB Step
Attenuator
Antenna
Switch
SW
DIG_CTRL_ATTH
700
800
700
800
Rx LO
IF Filter
To GPS
Diplexer
SWSWSW
SSI
18Mhz
CLK
Abacus III
ABACUS III
Dec.
Filter
ΣΔ ADC
2nd
LO
LOCLK
Antenna
Switch
15 dB Step
Attenuator
900
900
DIG_CTRL_ATTH
To GPS
Diplexer
IF Filter
Rx LO
SSI
18Mhz
CLK
Abacus III
ABACUS III
Dec.
Filter
ΣΔ ADC
2nd
LO
LOCLK
A
Figure 3-4. Receiver Block Diagram (700/800 MHz)
3.2.1.1 GPS
Figure 3-5. Receiver Block Diagram (900 MHz)
The GPS signal is tapped at the antenna port via a series resonant network (diplexer) which provides
a very low capacitive load to the transceiver. The diplexer circuitry provides rejection to radio band
signals up to ~1GHz which serves as isolation between the radio RF and GPS signal paths. The
GPS signal is filtered though a GPS SAW filter - LNA – Saw filter chain before going into the TI GPS
IC for processing.
ntenna
To Radio transceiver path
GPS Receiver Circuit
OMAP
Processor
Diplexer
Figure 3-6. GPS Diagram
GPS IC
Page 39
Basic Theory of Operation: Analog Mode of Operation3-5
3.2.1.2 VHF Front-End
From the 15 dB Step Attenuator, a VHF signal is routed to the first pre-selector filter followed by an
LNA and a second pre-selector filter. Both filters are discrete and tunable designs and are used to
band limit the incoming energy and suppress known spurious responses such as Image and the ½ IF
spur. The output of the second pre-selector filter is applied to the RF port of the Mixer IC. The Mixer
IC is also excited by a Local Oscillator (LO) signal at the LO port to down-convert the RF signal to a
109.65 MHz intermediate frequency (IF). The down converted IF signal is passed through a crystal
filter which drives the input of the Abacus 3 Analog to Digital Converter IC (AD9864).
3.2.1.3 UHF1/UHF2 Front-End
From the 15 dB Step Attenuator, a UHF1/UHF2 signal is routed to the first pre-selector filter followed
by an LNA and a second pre-selector filter. Both filters are discrete and tunable designs and are
used to band limit the incoming energy and suppress known spurious responses such as Image and
the ½ IF spur. The output of the second pre-selector filter is applied to the RF port of the Mixer IC.
The Mixer IC is also excited by a Local Oscillator (LO) signal at the LO port to down-convert the RF
signal to a 109.65 MHz intermediate frequency (IF). The down converted IF signal is passed through
a crystal filter which drives the input of the Abacus 3 Analog to Digital Converter IC (AD9864).
3.2.1.4 700/800 MHz Front-End
From the 15 dB Step Attenuator, a 700/800 MHz band signal is routed to the first band SPST switch
which selects the 700 or the 800 band signal and routes it to the appropriate first pre-selector filter. A
second band select switch selects the output of the appropriate filter and applies it to an LNA
followed by a similar pre-selector filter/ band-select switch circuit. The signal is then routed to a
second LNA whose output is applied to a discrete image filter. Both preselector filters are Surface
Acoustic Wave designs used to band limit the received energy and suppress known spurious
responses such as Image and the ½ IF spur. The output of the discrete image filter is applied to the
RF port of the Mixer IC. The Mixer IC is also excited by a Local Oscillator (LO) signal at the LO port
to down-convert the RF signal to a 109.65 MHz intermediate frequency (IF). The down converted IF
signal is passed through a crystal filter which drives the input of the Abacus 3 Analog to Digital
Converter IC (AD9864).
3.2.1.5 900 MHz Front-End
From the 15 dB Step Attenuator, the 900 MHz band signal is routed to the pre-selector filter. The
output of the prefilter is applied to the first LNA followed by a similar filter as the pre-selector filter.
The signal is then routed to a second LNA whose output is applied to a discrete image filter. Both pre
and post selector filters are Surface Acoustic Wave designs used to band limit the received energy
and suppress known spurious responses such as Image and the ½ IF spur. The output of the
discrete image filter is applied to the RF port of the Mixer IC. The Mixer IC is also excited by a Local
Oscillator (LO) signal at the LO port to down-convert the RF signal to a 109.65 MHz intermediate
frequency (IF). The down converted IF signal is passed through a crystal filter which drives the input
of the Abacus 3 Analog to Digital Converter IC (AD9864).
3.2.1.6 Analog To Digital Converter
The ADC IC's front end down converts the first IF to a second IF, a 2.25 MHz signal. The second IF
is sampled at 18 MHz, a signal generated by an integrated clock synthesizer. The sampled signal is
decimated by a factor of 900 to 20 kHz and converted to SSI format at the ADC's output. The Serial
Synchronous Interface (SSI) serial data waveform is composed of a 16 bit in-phase word (I) followed
by a 16 bit Quadrature word (Q). A 20 kHz Frame Synch and a 1.2 MHz clock waveform are used to
synchronize the SSI IQ data transfer to the Digital Signal Processor IC (OMAP) for post-processing
and demodulation.
Page 40
3-6Basic Theory of Operation: Analog Mode of Operation
r
r
3.2.2Transmitting
When the radio is transmitting, microphone audio is digitized and then processed by the DSP and
sent to the Trident IC (see Figure 3-7, Figure 3-8, Figure 3-9 and Figure 3-10) via the SSI interface.
The Trident IC processes the SSI data for application to the voltage controlled oscillator as a
modulation signal.
Log Amp Power Detector
TX Buffer Amp
RF Switch Matrix
TX Buffer Amp
TX Driver Amplifier
TX VCO
RX/TX
VCO
Figure 3-7. Transmitter (VHF) Block Diagram
Transmitter Final
FET VHF
Loop Filter
Antenna
Switch
TO RX
Trident IC
Synthesizer
Antenna
Switch
Harmonic
LP Filter
Digital RF Attenuator
Directional
Coupler
Reverse Power
Detection
Ref. Oscillator
Log Amp Power Detector
Digital RF Attenuator
Antenna Connecto
GPS
RF Switch Matrix
TX Driver Amplifier
TX VCO
RX/TX
VCO
Figure 3-8. Transmitter (UHF1/UHF2) Block Diagram
Transmitter Final
FET UHF
Loop Filter
TO RX
Trident IC
Synthesizer
Harmonic
LP Filter
Directional
Coupler
Reverse Power
Detection
Ref. Oscillator
Antenna Connecto
GPS
Page 41
Basic Theory of Operation: Analog Mode of Operation3-7
Once a VHF frequency for transmit has been selected, the Trident IC and the accompanying logic
circuitry will enable the voltage controlled oscillator which then generates the desired transmit
frequency. This transmit signal is then routed to the TX buffer amplifier which amplifies the signal.
The signal is routed to the VHF Driver amplifier and then to the discrete final power amplifier. The
signal now goes through the antenna switch which routes the power to the harmonic filter which will
filter out the harmonics of the carrier signal and then passes through a directional coupler. The Log
Amp power detector Monitors the output of the directional coupler and adjusts the control voltages to
the driver amplifier and final power amplifier. Finally, the RF signal is routed to the main antenna.
Figure 3-10. Transmitter (900 MHz) Block Diagram
Page 42
3-8Basic Theory of Operation: Analog Mode of Operation
3.2.2.2 UHF1/UHF2 Transmit
Once a UHF frequency for transmit has been selected, the Trident IC and the accompanying logic
circuitry will enable the voltage controlled oscillator which then generates the desired transmit
frequency. This transmit signal is then routed to the TX buffer amplifier which amplifies the signal.
The signal is routed to the UHF1/UHF2 Driver amplifier and then to the discrete final power amplifier.
The signal now goes through the antenna switch which routes the power to the harmonic filter which
will filter out the harmonics of the carrier signal and then passes through a directional coupler. The
Log Amp power detector Monitors the output of the directional coupler and adjusts the control
voltages to the driver amplifier and final power amplifier. Finally, the RF signal is routed to the main
antenna.
3.2.2.3 700/800 MHz Transmit
Once a 700/800 MHz frequency for transmit has been selected, the Trident IC and accompanying
logic circuitry enable the correct voltage controlled oscillator which then generates the desired
transmit frequency. This transmit signal is then routed to the TX buffer amplifier which amplifies the
signal. The signal is routed to the 7800 Driver amplifier and then to the discrete final power amplifier.
The signal now goes through the antenna switch which routes the power to the harmonic filter which
will filter out the harmonics of the carrier signal and then passes through a directional coupler. The
Log Amp power detector Monitors the output of the directional coupler and adjusts the control
voltages to the driver amplifier and the discrete final power amplifier. Finally, the RF signal is routed
to the main antenna.
3.2.2.4 900 MHz Transmit
Once a 900 MHz frequency for transmit has been selected, the Trident IC and accompanying logic
circuitry enable the correct voltage controlled oscillator which then generates the desired transmit
frequency. This transmit signal is then routed to the TX buffer amplifier which amplifies the signal.
The signal is routed to the 900 MHz Driver amplifier and then to the discrete final power amplifier.
The signal now goes through the antenna switch which routes the power to the harmonic filter which
will filter out the harmonics of the carrier signal and then passes through a directional coupler. The
Log Amp power detector Monitors the output of the directional coupler and adjusts the control
voltages to the driver amplifier and the discrete final power amplifier. Finally, the RF signal is routed
to the main antenna.
Page 43
Basic Theory of Operation: Digital (ASTRO) Mode of Operation3-9
3.3Digital (ASTRO) Mode of Operation
In the ASTRO (digital) mode of operation, the transmitted or received signal is limited to a discrete
set of frequency deviation levels. The receiver handles an ASTRO-mode signal identically to an
analog-mode signal, up to the point where the DSP decodes the received data. In the ASTRO
receive mode, the DSP uses a different algorithm to recover data.
In the ASTRO transmit mode, microphone audio is processed identically to an analog mode, with the
exception of the algorithm the DSP uses to encode the information. Using this algorithm, transmitter
FM deviation is limited to discrete levels.
3.4Controller Section
The controller section (See Figure 3-11.) comprises of five functional sections that are split among
two boards, which are the main and keypad boards. The main functional section consists of a dual
core ARM and DSP controller, an encryption processor (MACE), Flash memory, and a Double Data
Rate Synchronous Dynamic Random Access Memory (DDR SDRAM) and CPLD for GPIO expander
multiple clock generation and SSI interface for the radio system. The Power and Clocks section
includes a power management IC (MAKO) and various external switching regulators, and three clock
sources (12 MHz and 24.576 MHz) from which all other controller digital clocks are derived. The
Audio section has a CODEC and a class-D audio power amplifier that provides the radio with a
microphone and speaker design. The User Interface section provides communication and control to
the main Liquid Crystal Displays (LCD) on the radio, as well as a keypad and a side connector
interface conforming to GCAI (Global Communications Accessory Interface) specifications. The GPS
and Bluetooth section comprises of a Global Positioning Satellite(GPS) and Bluetooth combo chipset
on the main board, and an AVR Bluetooth controller IC, SDRAM, LF wakeup IC and Accelerometer
IC on the keypad board. The MACE IC is located on the keypad board.
Battery Supply
Transceiver
POWER & CLOCKS
Clock sources:
12MHz,
24.576Mhz,
32.768kHz
Voltage Regulators
USER INTERFACE
Main Display
Keypad
Side connector
Top Controller
CONTROLLERS & MEMORY
ARM Processor
Digital Signal Processor
Flash Memory
DDR Memory
Encryption Processor
BT,GPS and Encryption
Keypad Board (full version)
MACE
Bluetooth
Accelerometer
GPS (on main board)
Figure 3-11. Controller Block Diagram
AUDIO
Data Microphone
Audio PA/ Speaker
Main Microphone
Acc. Speaker
Acc. Microphone
Page 44
3-10Basic Theory of Operation: Controller Section
The ARM controller core of the OMAP processor handles the power up sequence of all devices,
including firmware upgrades, and all operating system tasks that are associated with FLASH and
SDRAM memories and user interface communication. The FLASH memory (64 MB) is required to
store the firmware, tuning, and Codeplug settings, which upon initialization get read and stored into
SDRAM (32MB) for execution. The ARM and DSP core jointly control and configure audio, wireless
and RF devices linked to the Serial Peripheral Interface (SPI) and Synchronous Serial Interface
(SSI) buses to enable radio FM and optional wireless communication protocols. For encryption, a
separate ARM processor is used (MACE) to encode and decode encryption packets coming in from
the main OMAP processor through the SSI interface. Its firmware is flashed via the main processor
during an upgrade request to its internal FLASH memory. The MACE encryption processor is located
on the keypad board.
The power and most clocks to the controller devices are provided by the MAKO IC and external
switching and linear regulators on board. A Complex Programmable Logic Array (CPLD) IC divides
the 24.576 MHz clock from MAKO to source OMAP's 32 kHz Real Time Clock, and MACE's 4 MHz
main clock. OMAP's main clock is supplied externally from an on board 12 MHz crystal.
The radio has two internal microphones and an internal speaker, as well as available microphone
and speaker connections for external accessories. The internal 4 Ohm speaker is located on the
same side as the main display and keypad of the radio. The internal speaker is driven by a Class D
audio amplifier located on the main board that is capable of delivering a rated power of 0.5 W. The
external accessory speaker is driven by a Class AB audio amplifier on the MAKO IC that is capable
of delivering 0.5 W of power into a 16 Ohm as a minimum load. Both speaker paths use the CODEC
for volume control and to convert the audio signal from digital to analog. Both internal and external
microphones use the CODEC's ADC to deliver digital audio samples to the DSP controller.
The user interface block consists of a main display, a keypad, top controls and the accessory side
connector. The side connector (Universal Connector) provides audio, USB, RS232 communication
for accessories. All signals to and from the connector go through the internal keypad board before
reaching the microcontroller and other devices on the main board.
The radio also has integrated feature of Global Positioning System (GPS) and Bluetooth with Mandown feature (depending on radio model) (see Figure 3-12). The GPS and Bluetooth Combo RF
chipset (NL5500) is located on the Main board together with the GPS/RF Diplexer circuitry and
Bluetooth Front-End circuitry. The GPS receiver section of the GPS/BT combination IC interfaces
with the OMAP processor through a dedicated UART port. The GPS receiver also has a dedicated
reset controlled solely by the OMAP processor. The GPS/Bluetooth IC (NL5500) taps the GPS signal
from transceiver path and processes the location information before relaying to the OMAP processor
via UART lines. The clock supplies to NL5500 included a 26MHz TCXO and 32kHz clock from
CPLD.
In addition to the Mace features, the Expanded Keypad Board consists of a 3-axes digital
accelerometer and the Bluetooth Controller IC (AVR) together with LF Wakeup IC (AS3930A) for
Secure Pairing.
Main Board
GPS+Bluetooth
Combo Chipset
// 1
32kHz
GPS SAW
filters &
LNA
NL5500
26MHz
TCXO
// 1
GPS/R F Antenna
GPS/RF
Diplexer
BT
Filter
BT Antenna
The radio also has the ability to connect to a wireless Bluetooth audio headset. This feature is
implemented using a combination Bluetooth/GPS integrated circuit (NL5500 IC) located on the Main
board. An optional accessory headset can connect using a low-data rate GFSK modulated signal
hopping on 79 x 1 MHz wide Bluetooth channels from 2402 MHz to 2480 MHz in the ISM band. Each
APX accessory that is capable of Bluetooth communication will have its own unique Bluetooth
address. Bluetooth uses a frequency hopping spread spectrum (FHSS) technique to spread the RF
power across the spectrum to reduce the interference and spectral power density. The frequency
hopping allows the channel to change up to 1600 times a second (625 μs time slot) based on a
pseudo random sequence. If a packet is not received on one channel, the packet will be
retransmitted on another channel. The Bluetooth IC sends data to the AVR32 processor that is also
located on the keypad board over an HCI UART link. The AVR32 processor communicates to the
OMAP processor on the main board through a dedicated USB port.
The Bluetooth feature is accompanied by a Low-Frequency (LF) detection circuit that is also located
on the keypad board. The LF circuit provides the ability of a secure pairing connection with a
Bluetooth accessory. Once a radio has the Bluetooth feature enabled, a user can tap their LF
enabled Bluetooth audio accessory with the radio at the pairing spot to establish a secure Bluetooth
connection. The LF circuit uses a 125 kHz radiated signal to communicate the secure pairing
information between the Bluetooth accessory and low-frequency receiver. The low-frequency
receiver is programmed by the AVR32 processor through a dedicated SPI bus and transfers the
pairing data through a dedicated UART.
There is a digital accelerometer on the keypad board that detects the 3-axis force of gravity which
can be used to determine the radio's orientation. The accelerometer's position is communicated to
the AVR32 processor through a SPI bus.
Page 46
3-12Basic Theory of Operation: Controller Section
Notes
Page 47
Chapter 4Recommended Test Equipment and Service
Aids
This chapter provides lists of recommended test equipment and service aids, as well as information
on field programming equipment that can be used in servicing and programming ASTRO
APX 2000/ APX 4000/ APX 4000Li radios.
4.1Recommended Test Equipment
The list of equipment contained in Table 4-1 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. 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 4-1. Recommended Test Equipment
EquipmentCharacteristicsExampleApplication
Service
Monitor
Digital RMS
Multimeter *
RF Signal
Generator *
Oscilloscope *2 Channel
RF Millivolt
Meter
Power Supply0 V to 32 V
Can be used as a substitute for
items marked with an asterisk
(*)
100 µV to 300 V
5 Hz to 1 MHz
10 Mega Ohm Impedance
100 MHz to 1 GHz
-130 dBm to +10 dBm
FM Modulation 0 kHz to 10 kHz
Audio Frequency 100 Hz to
10 kHz
50 MHz Bandwidth
5 mV/div to 20 V/div
100 mV to 3 V RF
10 kHz to 1 GHz
0 A to 20 A
General Dynamics R2670Frequency/deviation meter and
signal generator for wide-range
troubleshooting and alignment
Fluke 179 or equivalent
(www.fluke.com)
Agilent N5181A
(www.agilent.com),
Ramsey RSG1000B
(www.ramseyelectronics.com,
or equivalent
Leader LS8050
(www.leaderusa.com),
Tektronix TDS1001b
(www.tektronix.com),
or equivalent
Boonton 9240
(www.boonton.com) or
equivalent
B&K Precision 1790
(www.bkprecision.com)
or equivalent
AC/DC voltage and current
measurements. Audio voltage
measurements
Receiver measurements
Waveform measurements
Waveform measurements
Voltage supply
Page 48
4-2Recommended Test Equipment and Service Aids: Service Aids
4.2Service Aids
Refer to Table 4-2 for a listing and description of the service aids designed specifically for servicing
this family of radios. These kits and/or parts are available from the Radio Products and Solutions
Organization offices listed in “Appendix B Replacement Parts Ordering” . While all of these items are
available from Motorola, most are standard shop equipment items, and any equivalent item capable
of the same performance may be substituted for the item listed.
Table 4-2. Service Aids
Motorola Part
Number
66012028001Chassis OpenerTo disassemble chassis from housing
66012031001Battery AdapterUsed in place of battery to connect radio to an external power
66012030001Vacuum Test Fixture To connect the vacuum/pressure hose to the radio.
NLN9839_Vacuum Pump KitVacuum pump with gauge and vacuum hose. Requires
5880384G68SMA to BNC AdapterAdapts radio’s antenna port to BNC cabling of test equipment.
RVN5224_ Customer Programming
Software (CPS) and Tuner
Software
PMKN4012BProgramming Cable To program the radio through Customer Programming
PMKN4013CProgramming/Service CableTo program and service the radio through Customer
RLN4460_ Portable Test Set For radio performance checks. Connects to radio’s universal
DescriptionApplication
supply.
Vacuum Test Fixture (66012030001).
CPS allows customer-specific programming of modes and
features. Tuner software required to perform alignment of
radio parameters.
Software and Tuner Software.
Programming Software and Tuner Software.
connector and allows remote switching and signal injection/
outputs for test equipment measurements.
NOTE:Do not place an order for the Programming Cable (PMKN4012A/PMKN4013B) as it is not compatible
with the APX 2000/ APX 4000/ APX 4000Li radio.
4.3Field Programming
This family of radios can be aligned and programmed in the field. This requires specific equipment
and special instructions. Refer to the online help in the Customer Programming Software (CPS) for
complete field programming information.
Page 49
Chapter 5Performance Checks
BNC
NOT USED
AUDIO GENERATOR
SINAD METER
AC VOLTMETER
TX
RX
30 dB PAD
30 dB PAD
RF GENERATOR
SYSTEM ANALYZER
OR COUNTER
WATTMETER
BATTERY
ADAPTER
66012031001
TRANSMIT
RECEIVE
POWER
SUPPLY
RADIO
PROGRAM/TEST CABLE
PMKN4013_
AUDIO IN
SET TO APPROX. 8mV FOR Tx
MEASURE 3.74Vrms FOR Rx
SMA-BNC
5880384G68
TEST SET
RLN4460_
This chapter covers performance checks used to ensure that the ASTRO APX 2000/ APX 4000/
APX 4000Li radio meets published specifications. The recommended test equipment listed in the
previous section approaches the accuracy of the manufacturing equipment, with a few exceptions.
Accuracy of the test equipment must be maintained in compliance with the manufacturer’s
recommended calibration schedule. Checks should be performed if radio performance degradation
is suspected.
5.1Test Equipment Setup
Supply voltage can be connected from the battery eliminator. The equipment required for the
performance checks is connected as shown in Figure 5-1.
Figure 5-1. Performance Checks Test Setup
Page 50
5-2Performance Checks: Test Equipment Setup
Initial equipment control settings should be as indicated in Table 5-1 and should be the same for all
performance checks and alignment procedures, except as noted.
RF Control: GEN
Output Level: -47 dBm
Modulation: 1kHz tone
@3 kHz deviation
Frequency: Set to selected
radio RX frequency
Meter: AC Volts
Transmitter Checks
RF Control: Monitor
Frequency: Set to selected
radio TX frequency
Meter: RF Display
Modulation Type: FM
Attenuation: 20 dB
PTT: OFF (center)DC On/Standby: Standby
Meter Out: RXVol t R a n ge: 10 Vdc
Opt Sel: ONCurrent: 2.5 Amps
* Use “PROJ 25 STD” if testing ASTRO Conventional channels.
Page 51
Performance Checks: Display Radio Test Mode5-3
5.2Display Radio Test Mode
This section provides instructions for performing tests in display radio test mode.
5.2.1Access the Test Mode
To enter the display radio test mode:
1. Turn the radio on.
2. Within 10 seconds, press Side Button 2 five times in succession.
The radio shows a series of displays that give information regarding various version numbers
and subscriber specific information. The displays are described in Table 5-2.
Table 5-2. Test-Mode Displays
Name of DisplayDescriptionAppears
ServiceThe literal string indicates the radio has
entered test mode.
Host versionThe version of host firmware is displayed.Always
DSP versionThe version of DSP firmware is displayed.Always
Secure versionVersion of theencryption softwareWhen the radio is secure
KGI algorithms name
(Encryption Type 1)
KG2 algorithms name
(Encryption Type 2)
KG3 algorithms name
(Encryption Type 3)
KG4 algorithms name
(Encryption Type 4)
KG5 algorithms name
(Encryption Type 5)
Type of encryption being usedWhen the radio is secure
Type of encryption being usedWhen the radio is secure
Type of encryption being usedWhen the radio is secure
Type of encryption being usedWhen the radio is secure
Type of encryption being usedWhen the radio is secure
Always
equipped
equipped
equipped and 2 or more
algorithms are loaded
equipped and 3 or more
algorithms are loaded
equipped and 4 or more
algorithms are loaded
equipped and 5 or more
algorithms are loaded
KG6 algorithms name
(Encryption Type 6)
Model numberThe radio’s model number, as
Serial numberThe radio’s serial number, as programmed
ESNThe radio’s unique electronic serial
ROM SizeThe memory capacity of the host FLASH
Type of encryption being usedWhen the radio is secure
programmed in the codeplug
in the codeplug
number
part
equipped and 6 or more
algorithms are loaded
Always
Always
Always
Always
Page 52
5-4Performance Checks: Display Radio Test Mode
Table 5-2. Test-Mode Displays (Continued)
Name of DisplayDescriptionAppears
FLASHcodeThe FLASH codes as programmed in the
codeplug
RF band 1The radio’s operating frequencyAlways
Tuning VerVersion of Tuning codeplugAlways
Proc VerVersion of ProcessorAlways
Option Board
Type
Option Board
Serial Number
Option Board
Bluetooth Addr
Option Board
Sw Version
Exp Board TypeType of Keypad Board is displayedWhen the radio has a Keypad
Type of Keypad board being usedWhen the radio has an Option
Serial number of the Keypad board is
displayed
Bluetooth Address of the Keypad board is
displayed
Software version of the Keypad Board is
displayed
Always
Board/Expanded Keypad Board.
When the radio has an
Expanded Keypad Board.
When the radio has an
Expanded Keypad Board.
When the radio has an
Expanded Keypad Board.
Board.
NOTE: All displays are temporary and will expire without any user intervention. If information is
longer than the physical length of the radio’s display, the information will wrap around to
the next display. After the last display, “RF TEST” is displayed.
To freeze any of the displays, press the left arrow on the 4-Way Navigation Button. To
resume automatic scrolling, press the right arrow on the 4-Way Navigation Button. To
rapidly scroll forward through the displays, continue pressing the right arrow. You cannot
scroll backwards.
NOTE: Press the Top Side Button (Purple button) to advance the test environments from “RF
TEST”, “CH TEST”, “RGB TEST” then press the
Top Button (Orange button) to confirm selection. Press any other buttons to advance the
test.
Once a test is carried out, restart the radio to proceed to another test.
3. Do one of the following:
•Press the Top Side Button to stop the displays and toggle between RF test mode and the
Control Top and Keypad test mode. The test mode menu “CH TEST” is displayed,
indicating that you have selected the Control Top and Keypad test mode. Go to Section
“5.2.3 Control Top and Keypad Test Mode” on page 1:5-7.
NOTE: Each press of the To p Side Button (Purple button) scrolls through “RF TEST”,
“CH TEST” and “RGB TEST”.
•Press the Top Button (Orange button) to stop the displays and put the radio into the RF
test mode. The test mode menu, “1 CSQ”, is displayed, indicating test frequency 1
SQ
uelch mode. Go to Section “5.2.2 RF Test Mode” below.
, Carrier
NOTE: Once your radio is in a particular test mode, you must turn off the radio and turn it
back on again to access the other test mode.
Page 53
Performance Checks: Display Radio Test Mode5-5
5.2.2RF Test Mode
When the ASTRO APX 2000/ APX 4000 radio is operating in its normal environment, the radio's
microcomputer controls the RF channel selection, transmitter key-up, and receiver muting, according
to the customer codeplug configuration. However, when the unit is on the bench for testing,
alignment, or repair, it must be removed from its normal environment using a special routine, called
RF TEST MODE.
While in RF test mode:
• Each additional press of Side Button 2 advances to the next test channel. (Refer to
Table 5-3.and Table 5-4)
•Pressing Side Button 1 scrolls through and accesses the test environments shown in
Table 5-5.
•Pressing Top Side Button scrolls through the Tx Deviation Frequency.
NOTE: Transmit into a load when keying a radio under test.
Table 5-3. Test Frequencies (MHz) – VHF, UHF1, UHF2
Test
Channel
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
VHFUHF1UHF2
RXTXRXTXRXTX
136.075136.025380.075380.025450.075450.025
142.075142.125390.075390.025460.075460.025
154.275154.225400.075400.025471.075471.025
160.175160.125411.075411.025484.925484.975
168.125168.075424.975424.925485.075485.025
173.925173.975435.075435.025495.075495.025
––445.075445.000506.075506.025
––445.075005445.000005519.925519.975
––457.075457.025––
––469.975469.925––
Page 54
5-6Performance Checks: Display Radio Test Mode
Table 5-4. Test Frequencies (MHz)– 700/800 MHz, 900 MHz
Test
Channel
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
700/800 MHz900 MHz
RXTXRXTX
764.0625764.0125935.0625896.0125
769.0625769.0125938.0625899.0125
775.9375775.9875940.9875901.9875
851.0625794.0125935.0625935.0125
860.0625809.0125938.0625938.0125
869.9375823.9875940.9875940.9375
851.0625851.0125––
860.0625860.0125–
869.9375869.8875––
––––
Table 5-5. Test Environments
DisplayDescriptionFunction
CSQCarrier SquelchRX: unsquelch if carrier detected
TX: mic audio
TPLTone
Private-Line
RX: unsquelch if carrier and tone (192.8 Hz)
detected
TX: mic audio + tone (192.8 Hz)
ASTASTRORX: none
TX: Digital Voice
USQCarrier
Unsquelch
RX: unsquelch always
TX: mic audio
***
***All deviation values are based on deviation tuning of this mode.
Page 55
Performance Checks: Display Radio Test Mode5-7
5.2.3Control Top and Keypad Test Mode
This test mode is used to verify proper operation of all radio buttons and switches if a failure is
suspected.
5.2.3.1 Control Top Checks
To perform the control top checks:
1. Press and hold the Top B u tt on (Orange button); the radio icons are displayed, and the LED
lights amber and lightbar LED light green.
2. Release the Top Button; “148/0” appears, which indicates that the Top Button is in the
open position. Your radio is now in the Control Top and Keypad test mode.
3. Press the Top Button again; “148/1” appears, which indicates that the Top Button is in the
closed position.
4. Rotate the Volume Control; “11/0” through “11/255” appear. The display values may vary
slightly at the upper and lower limits. Press gives “91/1”, release gives “91/0”.
5. Press the Top Side Button; “96/1” appears; release, “96/0” appears.
6. Press Side Button 1; “97/1” appears; release, “97/0” appears.
7. Press Side Button 2; “98/1” appears; release, “98/0” appears.
8. Press the PTT Button; “1/1” appears; release, “1/0” appears.
5.2.4RGB Test Mode
To perform the RGB Color Test:
1. Press and release Top Button (Orange button)
2. Press any key; Crosstalk test patterns appears.
3. Press any key; White color test appears.
4. Press any key; Red color horizontal lines appears.
5. Press any key until all 13 red color horizontal lines appears.
6. Press any key; Green color vertical line appears.
7. Press any key until all 13 green color vertical lines appears.
8. Press any key; Black color test appears.
9. Press any key; Blue color test appears.
10. Press any key; Vendor specific display test appears.
(12.5 kHz) ≥ 2.1 kHz, but
≤ 2.5 kHz(25 kHz) ≥ 4.1 kHz, but
≤ 5.0 kHz
Press PTT button on radio.
Say “four” loudly into the
radio mic. Measure
deviation:
(12.5 kHz) ≥ 2.1 kHz but
≤ 2.5 kHz
(25 kHz) ≥ 4.1 kHz but
≤ 5.0 kHz
This chapter describes both receiver and transmitter radio alignment procedures.
6.1Test Setup
A personal computer (PC) and tuner software are required to align the radio. Refer to the applicable
manual for installation and setup procedures for the software. To perform the alignment procedures,
the radio must be connected to the PC and to a universal test set. The radio alignment test setup is
shown in Figure 6-1.
Figure 6-1. Radio Alignment Test Setup
These radio alignment procedures should only be attempted by qualified
service personnel. Failure to perform alignment procedures properly may
result in seriously degraded radio or system performance.
Page 62
6-2Radio Alignment Procedures: Tuner Main Menu
!
Caution
6.2Tuner Main Menu
Select Tuner from the START menu by clicking Start › Program Files › Motorola ›
ASTRO 25 Products › ASTRO 25 Tuner. To read the radio, use the File › Read Device menu or
click on . Figure 6-2 illustrates how the alignment screens are organized. To access a
screen, double-click on the desired screen name in the Tuner menu.
IMPORTANT:Tuning should follow the order of the Tuning tree view in descending
6.3Softpot
The alignment screens introduce the concept of the “softpot,” an analog SOFTware-controlled
POTentiometer used for adjusting all transceiver alignment controls.
Each alignment screen provides the ability to increase or decrease the softpot value by using a
slider, or by entering the new value from the keyboard directly into the box. The slider bar indicates
the current softpot value; see Figure 6-3.
Figure 6-2. Tuner Software Main Menu
order from top to bottom
DO NOT switch radios in the middle of any alignment
procedure. Always left-click the Close button on the screen to
return to the Main Menu screen before disconnecting the
radio. Improper exits from the alignment screens might leave
the radio in an improperly configured state and result in
seriously degraded radio or system performance.
Page 63
Radio Alignment Procedures: Softpot6-3
!
Caution
Figure 6-3. Typical Softpot Screen
Adjusting the softpot value sends information to the radio to increase (or decrease) the voltage in the
corresponding circuit. For example, left-clicking the UP spin button in the New Softpot Value scroll
box on the Reference Oscillator screen instructs the radio’s microcomputer to increase the voltage
across a varactor in the reference oscillator, which increases the frequency.
In ALL cases, the softpot value is just a relative number corresponding to a digital-to-analog (D/A)
generated voltage in the radio.
Perform the following procedures in the sequence indicated.
NOTE: Some of the following screens may vary depending upon the radio under test and the version
of tuner software you are using. Refer to the software’s online help.
When keying the radio during a test, always
dummy load.
transmit into a
Page 64
6-4Radio Alignment Procedures: Radio Information
6.4Radio Information
Figure 6-4 shows a typical Radio Information screen. This screen is informational only and cannot be
directly changed.
Figure 6-4. Radio Information Screen
6.5Transmitter Alignments
6.5.1Reference Oscillator Alignment
Adjustment of the reference oscillator is critical for proper radio operation. Improper adjustment will
result not only in poor operation, but also in 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).
NOTE: Reference oscillator alignment is required after replacing (or servicing) the transceiver board.
Page 65
Radio Alignment Procedures: Transmitter Alignments6-5
This test can be done with either the R-2670 Communication Analyzer or the 8901_ Modulation
Analyzer.
• Initial setup using the R-2670 Communication Analyzer:
- RF Control: Monitor
- B/W: WB
- Freq: CPS frequency under test
- Attenuation: 20dB
- Mon RF in: RF I/O
- Meter: RF Display
- Mode: STD
- Input Level: uV or W
- Display: Bar Graphs
- Squelch: Mid-range or adjust as necessary
• Initial setup using the 8901_ Series Modulation Analyzer:
- Press the green Automatic Operation button on the analyzer.
- Press the FREQ key.
- Type 7.1 followed by SPCL button to set the 8901B_ modulation analyzer for maximum
accuracy.
To align the reference oscillator:
Select the Reference Oscillator alignment screen. See Figure 6-5, Figure 6-6, Figure 6-7,
1. Make sure the Communication Analyzer is in Manual mode.
VHF
• Set the base frequency to 173.975 MHz
U
HF1
• Set the base frequency to 469.925 MHz
UHF2
• Set the base frequency to 519.975 MHz
7
00/800 MHz
• Set the base frequency to 869.8875 MHz
900 MHz
• Set the base frequency to 940.9375 MHz
2. Adjust the reference oscillator’s softpot value with the slider until the measured value is as
close as possible to the frequency shown on the screen. See Table 6-1.
NOTE: Increases the slider decreases the frequency and vice versa.
Table 6-1. Reference Oscillator Alignment
BandTa rget
VHF±100 Hz
UHF1±100 Hz
UHF2±100 Hz
700/800 MHz±100 Hz
900 MHz±100 Hz
3. Left-click the Program All button on the screen to dekey the radio and save the tuned values.
4. Left-click the Close button on the screen to return to the Transmitter Alignments menu.
Page 69
Radio Alignment Procedures: Transmitter Alignments6-9
6.5.2Power Characterization Points
Tuning of the radio is done through Power Characterization Points tuning screen.
1. Select the TX Power Characterization Points alignment screen. See Figure 6-10,
Figure 6-11, Figure 6-12, Figure 6-13 and Figure 6-14.
2. Set power supply voltage and current limit.
3. Adjust softpot value by manipulating the slider bar, incrementing the "New Softpot Value" text
box, or directly entering the desired value into the "New Softpot Value" text box until the rated
power is indicated on the service Monitor. For rated power refer to the help text in the Tuner.
4. Repeat step 2 to 3 for all frequencies.
5. Left-click the Program All button on the screen to dekey the radio and save the tuned values.
Figure 6-10. Transmit Power Characterization Points Alignment Screen (VHF)
Figure 6-18. Transmit Power Characterization Alignment Screen (700/800 MHz)
Figure 6-19. Transmit Power Characterization Alignment Screen (900 MHz)
Page 75
Radio Alignment Procedures: Transmitter Alignments6-15
6.5.4PA Saturation Reference Tuning
Tuning is done through PA Saturation Referencing screen.
1. Select the PA Saturation Reference alignment screen. The screen indicates the transmit
frequencies to be used. See Figure 6-20, Figure 6-21, Figure 6-22, Figure 6-23 and
Figure 6-24.
2. In Manual Mode, set the service Monitor to the desired frequency (as shown in the frequency
list in the PA Saturation Reference alignment screen).
3. Adjust the PA Saturation Reference softpot value with the slider until the radio transmits as
close as possible to the rated power. For rated power refer to the help text in the Tuner.
4. Left-click the slider of the frequency selected (should be the same frequency as step 2).
5. Left-click the PTT Toggle button on the screen to make the radio transmit. The screen
indicates whether the radio is transmitting.
6. Repeat step 2 to 5 for all frequencies.
7. Left-click the Program All button on the screen to dekey the radio and save the tuned values.
Figure 6-20. PA Saturation Referencing Alignment Screen (VHF)
This alignment procedure balances the modulation contributions of the low- and high-frequency
portions of a baseband signal. Proper alignment is critical to the operation of signalling schemes that
have very low frequency components (for example, DPL) and could result in distorted waveforms if
improperly adjusted.
This procedure needs to be performed at multiple frequencies to allow for proper alignment across
the entire RF band. The RF band is divided into frequency zones with a calibration point (value) in
each zone.
NOTE: This alignment is required after replacing (or servicing) the main board.
Proper alignment requires a modulation analyzer or meter with a frequency response to less than
10 Hz modulating frequency. The modulation analyzer settings during this test should be set for
average deviation, a 15 kHz low-pass filter, no de-emphasis, and no high-pass filter, if these settings
are supported.
This alignment can be done with either the R-2670 Communication Analyzer or the 8901_ Series
Modulation Analyzer. The method of choice is the R-2670 analyzer.
1. Initial setup using the R-2670 Communication Analyzer:
- Connect a BNC cable between the “DEMOD OUT” port and the “VERT/SINAD DIST/DMM
COUNTER IN” port on the R-2670.
-Press the SPF key on the R-2670 to display the “SPECIAL FUNCTIONS MENU.” Move the
cursor to “High Pass,” and select 5 Hz on the soft key menu. Select 20 kHz for the “Low
Pass” setting.
- In the “RF Control” section of the R-2670, move the cursor to the “B/W” setting and select
“WIDE +/- 100 kHz” on the soft key menu.
- Place the R-2670 cursor in the “Display” zone. Select “AC VOLTS” on the soft key menu.
Move the cursor to the “Range” setting and select “AUTO.”
2. Initial setup using the 8901_ Series Modulation Analyzer:
-Press the FM MEASUREMENT button. (The “Error 0input level too low” indication is
normal until an input signal is applied.)
- Simultaneously press the Peak – and Peak + buttons. Both LEDs on the buttons should
light.
- Press the 15 kHz LP filter key.
3. Select the TX Deviation Balance alignment screen. The screen indicates the transmit
frequencies to be used. See Figure 6-25, Figure 6-26, Figure 6-27, Figure 6-28 and
Figure 6-29.
4. In the "RF Control" section of the R2670, set the service Monitor to the desired frequency (as
shown in the frequency list in the TX Deviation Balance alignment screen).
5. Left-click the PTT Tone: Low button.
6. Left-click the slider of the frequency selected (should be the same frequency as step 4).
7. Left-click the PTT Toggle button on the screen to make the radio transmit. The screen
indicates whether the radio is transmitting.
8. Measure and Record the Low Tone Tx Deviation value from the 8901_ Series Analyzer or the
AC voltage value from the R2670.
9. Left-click the PTT Tone: High button.
10. Adjust the softpot value until the measured deviation/voltage, when using the high tone, is
within +/- 1.5% of the value observed when using the Low Tone.
Page 79
Radio Alignment Procedures: Transmitter Alignments6-19
11. Left-click the PTT Toggle to de-key the radio.
12. Repeat the steps 4 to 10 for all frequencies.
13. Left-click the Program All button on the screen to dekey the radio and save the tuned values.
6-22Radio Alignment Procedures: Front End Filter Alignment
!
Caution
6.6Front End Filter Alignment
This procedure should only be attempted by qualified service
technicians.
The alignment procedure adjusts the front end receiver bandpass filters for the best receiver
sensitivity and selectivity. This procedure should be performed for all test frequencies to allow for
proper software interpolation of frequencies between the test frequencies in the band
(see Figure 6-30).
NOTE: Rx Front End Filter Alignment is required after replacing (or servicing) the transceiver board.
6.6.1Procedure for UHF 1 and UHF2 (Auto Tune)
Tuning of the radio is done through Rx Front End Filter tuning screen
1. Select the Rx Front End Filter alignment screen. See Figure 6-30.
2. Click on the slider or the "New Softpot Value" text box to select which frequency to tune.
3. Apply RF test signal input with no modulation at -90 dBm on the Test Signal Frequency
displayed at the top of the screen.
4. Left-click the Autotune button.
5. Repeat step 2 to 4 for all frequencies.
6. Left-click the Program All button on the screen to save the tuned values in the radio.
Figure 6-30. Front End Filter Alignment Screen (UHF1)
Page 83
Radio Alignment Procedures: Performance Testing6-23
Figure 6-31. Front End Filter Alignment Screen (UHF2)
6.7Performance Testing
6.7.1Bit Error Rate
This section describes the Bit Error Rate (BER) test of the radio’s receiver at a desired frequency
(see Figure 6-32, Figure 6-33, Figure 6-34, Figure 6-35 and Figure 6-36).
6.7.1.1 Bit Error Rate Fields
Set up the R2670 Communication Analyzer as follows:
1. Connect the RF Input port of the radio under test to the RF IN/OUT port of the R2670 Service
Monitor.
2. Set up the R2670 Service Monitor:
- In the Display Zone, select PROJ 25 STD mode and set the meter to RF DISPLAY.
- In the RF Zone, configure the analyzer as follows:
RF Control:Generate
Preset:B/W: NB
Freq:Test frequency (Ex: 851.0625 MHz)
Output Level:-50.0 dBm
Gen RF Out:RF I/O
- In the Audio Zone, select the 1011 Hz PAT code and set the deviation to “PROJ25Dev:
2.83 kHz ~”.
The bit error rate screen contains the following fields:
• Rx Frequency:
This field selects the Receive Frequency directly in MHz.
This field selects the Digital test pattern to be received by the radio. Choices are: Standard Tone
Test Pattern (Framed 1011), F2 1031, Standard Interface Test Pattern (CCITT V.52) and Phase
2 Digital (1031 Hz) Test Pattern.
• Modulation Type:
This field represents the digital modulation type of the incoming signal on which BER is to be
calculated.
• Continuous Operation:
This field allows the user the option to repeat the BER test indefinitely. A selection of Yes will
cause the radio to calculate BER on a continuous basis and update the results on this screen
after each integration time. A selection of No will cause the BER test to execute for only one
sample of the integration time and then update the display.
• Audio:
This field allows the user to select the audio output during a test. Selecting Internal will cause
the radio's built-in speaker to unmute to any signals at the desired frequency which are present
during the test. Selecting External will route the same signal to the radio's accessory connector
audio output. Selecting Mute will disable the audio output.
NOTE: There will be no audio option available for APX 2000/APX 4000/APX 4000Li when
performing a Bit Error Rate Test.
• BER Integration Time:
BER Integration Time carries with Test Pattern Type.
• Number of Frames
Number of Frames over which bit error result are accumulated to produce the result.
NOTE: When Continuous Operation = Yes, all fields will be grayed out while the test is in progress.
They will be enabled when the STOP button is pressed.
When Continuous Operation = No, a wait cursor will be displayed while the test is in
progress and return to normal when the test is done.
3. Press Start/Stop button to begin or end BER testing.
Page 85
Radio Alignment Procedures: Performance Testing6-25
Radio Alignment Procedures: Performance Testing6-27
Figure 6-36. Bit Error Rate Screen (900 MHz)
6.7.2Transmitter Test Pattern
The Transmitter Test Pattern test is used to transmit specific test patterns at a desired frequency so
that the user can perform tests on the radio’s transmitter (see Figure 6-37, Figure 6-38, Figure 6-39,
Figure 6-40 and Figure 6-41).
6.7.2.1 Transmitter Test Fields
This screen contains the following fields:
• Tx Frequency:
This field selects the Transmit Frequency directly in MHz.
• Channel Spacing:
This field allows the user to select the desired transmit deviation in kHz.
• Test Pattern Type:
This field represents the type of test pattern which will be transmitted by the radio when PTT
TOGGLE button is pressed.
NOTE: Channel Spacing and Test Pattern Type fields will be grayed out while the radio is
Figure 6-41. Transmitter Test Pattern Screen (900 MHz)
Page 91
Chapter 7Encryption
This chapter provides procedures for using the encryption capability of your radio. The following
procedures are outlined:
• Loading an encryption key
• Selecting an encryption key
• Selecting an Index
• Erasing an encryption key
7.1Load an Encryption Key
Keys will be loaded from the KVL to the radio in either clear or encrypted form depending on the
configuration of the CPS parameter "KVL – FIPS Level 3 Approved Mode". If the parameter is
disabled, keys will be sent in clear form; if the parameter is enabled, keys will be sent to the radio in
encrypted form.
NOTE: A KVL3000 Plus with software version R03.52.45 or greater must be used to load keys to a
radio with "KVL – FIPS Level 3 Approved Mode" enabled.
To load an encryption key:
1. Refer to the key-variable loader (KVL) manual for equipment connections and setup.
2. Attach the KVL to the radio. “KEYLOADING” is shown on the main display of a configured
radio. All other radio functions, except for power down, backlight, and volume, are locked out.
3. Refer to the KVL manual for how to load the encryption keys into the radio.
4. When the key is loaded successfully, you will hear:
• On single-key radios – a short tone.
• On multikey radios – an alternating tone.
The secure kits for APX 2000/ APX 4000 are identified by the following kit numbers:
Table 7-1. Kit Numbers for Secure-Enabled Keypad Boards
Kit NumberDescription
NNTN8314A ADP KIT w/ Bluetooth M2
NNTN8313AADP w/ Bluetooth M3
NNTN8310AADP/DVP-XL w/ Bluetooth M2
NNTN8317AADP/DVP-XL KIT w/ Bluetooth M3
NNTN8311AADP/AES w/ Bluetooth M2
NNTN8316AADP/AES KIT w/Bluetooth M3
NNTN8312AADP/DES/DES-XL/DES-OFB KIT w/ Bluetooth M2
NNTN8315AADP/DES/DES-XL/DES-OFB KIT w/ Bluetooth M3
Page 92
7-2Encryption: Multikey Feature
7.2Multikey Feature
This feature allows the radio to be equipped with multiple encryption keys. It can support two or more
encryption algorithms simultaneously (e.g., AES and DES-XL).
• Conventional Multikey – The encryption keys can be tied (strapped), on a one-per-channel
basis. In addition, the radio can have operator-selectable keys, operator-selectable indices, and
operator-selectable key erasure. If talkgroups are enabled in conventional, then the encryption
keys are strapped to the talkgroups.
• Trunked Multikey – If the radio is used for both conventional and trunked applications, strap
the encryption keys for trunking on a per- talkgroup or announcement group basis. In addition,
a different key can be strapped to other features; for example, dynamic regrouping, failsoft, or
emergency talkgroup. The radio can have operator-selectable key erasure.
7.3Select an Encryption Key
You can select an encryption key using either the menu or the keypad.
7.3.1Use the Menu
To select an encryption key using the menu:
1. Press
2. Press
3. Press
4. Press
5. Press
> until the display shows “Key”.
{, |, or } directly below “Key”. The display shows the last user-selected and
-stored encryption key.
^ or v to scroll through the list of encryption keys.
NOTE: If a deleted key is selected, “ERASED KEY” will be displayed.
{, |, or } directly below the desired menu.
• SEL = saves the newly selected key and returns to the home display.
o, the PTT button, or {, |, or } directly below “Exit”, or turn the
Multi-function knob to exit this menu.
• If the selected key is erased, the display shows “KEY FAIL” and the radio sounds a
momentary keyfail tone.
• If the selected key is not allowed, the display shows “ILLEGAL KEY” and the radio sounds a
momentary illegal key tone.
Page 93
Encryption: Select an Encryption Index7-3
7.3.2Use the Keypad
To select an encryption key using the keypad:
1. Press
2. Press
3. Using the keypad, enter the number of the desired key.
4. Press
5. Press
> until the display shows “Key”.
{, |, or }directly below “Key”. The display shows the last user-selected and
-stored encryption key.
NOTE: If a deleted key is selected, “ERASED KEY” will be displayed.
{, |, or } directly below the desired menu.
• SEL = saves the newly selected key and returns to the home display.
o, the PTT button, or {, |, or } directly below “Exit”, or turn the
Multi-function knob to exit this menu.
• If the selected key is erased, the display shows “KEY FAIL” and the radio sounds a
momentary keyfail tone.
• If the selected key is not allowed, the display shows “ILLEGAL KEY” and the radio sounds a
momentary illegal key tone.
7.4Select an Encryption Index
This feature lets the user select one or more groups of several encryption keys from among the
available keys stored in the radio. For example, the radio could have a group of three keys structured
to one index, and another group of three different keys structured to another index. Changing indices
makes the radio automatically switch from one set of keys to the other. Every channel to which one
of the original keys was tied will now have the equivalent new key instead.
7.4.1Use the Menu
To select an index using the menu:
1. Press
2. Press
3. Press
4. Press
5. Press
> until the display shows “KSet”.
{, |, or } directly below “KSet”. The display shows the last user-selected and
-stored index.
^ or v to scroll through the list of encryption keys.
NOTE: If a deleted key is selected, “ERASED KEY” will be displayed.
{, |, or } directly below the desired menu.
• SEL = saves the newly selected key and returns to the home display.
o, the PTT button, or {, |, or } directly below “Exit”, or turn the
Multi-function knob to exit this menu.
• If the selected key is erased, the display shows “KEY FAIL” and the radio sounds a
momentary keyfail tone.
• If the selected key is not allowed, the display shows “ILLEGAL KEY” and the radio sounds a
momentary illegal key tone.
Page 94
7-4Encryption: Erase an Encryption Key
7.4.2Use the Keypad
To select an index using the keypad:
1. Press
2. Press
3. Using the keypad, enter the number of the desired key.
4. Press
5. Press
> until the display shows “KSet”.
{, |, or } directly below “KSet”. The display shows the last user-selected and
-stored index.
NOTE: If a deleted key is selected, “ERASED KEY” will be displayed.
{, |, or } directly below the desired menu.
• SEL = saves the newly selected key and returns to the home display.
o, the PTT button, or {, |, or } directly below “Exit”, or turn the
Multi-function knob to exit this menu.
• If the selected key is erased, the display shows “KEY FAIL” and the radio sounds a
momentary keyfail tone.
• If the selected key is not allowed, the display shows “ILLEGAL KEY” and the radio sounds a
momentary illegal key tone.
7.5Erase an Encryption Key
This section describes two methods for erasing an encryption key.
7.5.1Method 1 – Key Zeroization (Multikey Only)
To zeroize an encryption key:
1. Press
2. Press
3. Press
4. Select single encryption key or all encrytion keys deletion from the “OPTN” menu.
5. Press
> until the display shows “Eras”.
{, |, or } directly below “Eras”. The display shows the last user-selected and
-stored encryption key.
^ or v to scroll through the list of encryption keys.
o, the PTT button, or {, |, or } directly below “Exit”, or turn the
Multi-function knob to exit this menu.
• If the selected key is erased, the display shows “KEY FAIL” and the radio sounds a
momentary keyfail tone.
• If the selected key is not allowed, the display shows “ILLEGAL KEY” and the radio sounds a
momentary illegal key tone.
7.5.2Method 2 – All Keys Erased
To erase all encryption keys at one time:
With the radio on, press and hold the Top Side button and, while holding this button down,
press the Top button.
NOTE: DO NOT press the Top button before pressing the Top Side button unless you are
in an emergency situation. This sends an emergency alarm.
Before the keys are erased, the display shows “PLEASE WAIT”.
When all the encryption keys have been erased, the display shows “ALL KEYS ERASED”.
Page 95
Chapter 8Disassembly/Reassembly Procedures
!
Caution
This chapter provides detailed procedures for disassembling/reassembling and ensuring
submergibility of the APX 2000/ APX 4000/ APX 4000Li radios. When performing these procedures,
refer to “Chapter 10: Exploded Views and Parts Lists” and the diagrams that accompany the text.
Items in parentheses ( ) throughout this chapter refer to item numbers in the exploded view diagrams
and their associated parts lists.
This chapter also has procedures for removing and installing the APX 2000/ APX 4000/ APX 4000Li
radio’s standard accessories.
66012030001BrusiaBE-MO-14512To connect the vacuum/pressure hose of the
Supplier
Electric Co.
Supplier
Part Number
keypad retainer.
MA-800GFor keypad rubber mushroom rib assembly
and disassembly.
screw (if thumb screw is too tight).
disassembly and reassembly.
Vacuum Test Fixture.
Vacuum Pump Kit to the radio.
To enhance sealing when the vacuum test
VPC10RSE4B
fixture is connected to the radio.
Remarks
8.3Fastener Torque Chart
Table 8-3 lists the various fasteners by part number and description, followed by the torque values
and the location where used. Torque all fasteners to the recommended value when assembling the
radio.
Table 8-3. Required Tools and Supplies
Motorola
Part Number
0386104Z04Speaker retainer and Chassis screw3.0
0378212A02Keypad Retainer screw1.2
02012016001Rotary Switch Spanner nut4.5
DescriptionRepair Torque (in-lbs)
Page 98
8-4Disassembly/Reassembly Procedures: Radio Disassembly
!
Caution
Battery Latch
8.4Radio Disassembly
This section contains instructions for disassembling the radio's main subassemblies.
Prepare the radio for disassembly:
• Turn off the radio by pressing on the MFK (22) and hold the MFK (Multi Function Knob) until the
radio display shows “Power off?”. Press the Menu Select button below and select Yes to power
off.
• Remove the antenna, the battery, the Accessory-Connector cover (14), the Bottom Label (17)
and any other accessory connected to the radio.
8.4.1Remove Battery (48)
To avoid a possible explosion:
• DO NOT charge, remove, or attach the battery in an area
labeled “hazardous atmosphere.”
• DO NOT discard batteries in a fire.
If the radio is programmed for volatile-key retention,
encryption keys will be retained for approximately 30 seconds
after battery removal.
NOTE: The Motorola-approved battery shipped with the APX 2000/ APX 4000/ APX 4000Li radio is
uncharged. Prior to using a new battery, charge it per the recommended procedure for the
battery.
1. With the radio turned off, lift up the latch located at the bottom of the battery.
Figure 8-2. Lifting up the latch
Page 99
Disassembly/Reassembly Procedures: Radio Disassembly8-5
2. While lifting the latch, remove the battery by sliding it out as shown.
8.4.2Remove Antenna (23)
1. With the radio turned off, turn the antenna counter-clockwise to remove it from the radio.
Figure 8-3. Removing the Battery
Figure 8-4. Removing the Antenna
Page 100
8-6Disassembly/Reassembly Procedures: Radio Disassembly
8.4.3Remove Multi Function Knob (22)
1. Hold the radio with the top facing upward and the front of the radio facing you.
2. With the Chassis Opener, grasp the Multi Function Knob and pull it upward, until it is free from
its shaft.
Figure 8-5. Removing the Multi Function Knob
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