Motorola Two Way Portable Radio Ht1000 Mt2000 Mts2000 Mtx Series 68p81200c40 O Manual

							III. Troubleshooting Secure Operations
Refer elsewhere in this radio service manual for
disassembly and reassembly information, and refer to
the radio theory/troubleshooting manual for a general
overview of troubleshooting information and proce-
dures. A key variable loader and oscilloscope are
needed to troubleshoot the Secure Module.
NOTE
The Secure Module itself is NOT serviceable. If the
Secure Module is found to be defective then it must
be replaced.
A. ERROR 09/10
The MTS 2000 Series Handie-Talkie™ Portable
Radio automatically performs a self test on every
power-up. Should the radio fail the self tests, the dis-
play will show “ERROR XX/XX” (where XX/XX is
alphanumeric) accompanied by a short beep. If the
display shows “ERROR 09/10” or “E09/10”, then the
radio failed the secure power-up self tests and the
host microcontroller is unable to communicate with the
Secure Module via the SPI bus. Turn off the radio,
check the battery connection, and turn the radio back
on. If the radio still does not pass the self tests, then a
problem exists with the secure operations of the radio.
Since the module is removable, a good first step
in troubleshooting secure operation is simply to
replace the suspect Secure Module with a knownworking module. If this does not fix the problem, then
the original module is probably not the cause of the
problem. If the new module does fix the problem, then
the original module must be replaced. 
A complete procedure for troubleshooting this
error is listed below:
1. Turn the radio off, check the battery connection,
and turn the radio back on.
2. If the error condition still exists, check that a
Secure Module is installed and make sure that it is
properly connected to the controller board. To do
this, refer to the disassembly and reassembly sec-
tions of this manual.
3. Turn the radio back on.
4. If the error condition still exists and a working
secure module with the same kit number is avail-
able, replace the suspect module with the working
module.
5. If the problem persists, disassemble the radio and
check the encryption connector SPI pins (listed in
Table 1) for data transitions when the radio is
turned on and off. If activity is not seen on all five
lines, check both sides of the connector for broken
connections.
6. Troubleshoot the Controller Board.
52
SIGNAL NAME CONNECTOR PLUG FUNCTION
P1 PIN NUMBER
UNSW B+ 1 Unswitched battery voltage
Vdd 2 Switched 5 volt supply
REF CLK 3 2.1/2.4 MHz clock signal
GROUND 4 Ground
PRE EMPHMIC AUDIO 7 Transmit Clear Audio
RX AUDIO 9 Receive Clear Audio
DISCRIMINATOR 10 Receive Encrypted Audio
GROUND 11 Ground
RESET 12 Radio Reset - Does NOT reset module
KEY/FAIL 13 Keyloading Signal
TX AUDIO 14 Transmit Encrypted Audio
KID 15 Keyloading Signal
DVP WE 16 Keyloading Signal
SPI CLK 17 SPI Data Clock
SPI MOSI 18 SPI Data from Host
SPI MISO 19 SPI Data to Host
JABBA REQ 20 SPI Secure Interrupt Request
JABBA SEL 21 SPI Secure Slave Select
CONT 5V 24 Continuous 5 Volt Regulator Output
5,6,8,22,23,25 Not Used
Table 1.  MTS 2000 Single Key Secure Module I/O Definition 
						

							53 B. Keyloading Problems
Use the following procedure to troubleshoot key-
loading problems:
1. Verify that the correct Key Variable Loader (KVL)
is being used for the particular encryption algo-
rithm present in the radio. Refer to the following
chart:
2. Connect the KVL to the radio via the TDN9390A
keyloader cable. Whe the cable is connected to
the radio, the radio should enter the keyloading
mode of operation, and the radio should display
“KEYLOADING” or “KEYLDG” and make a beep
tone.
3. If the radio displays “ERROR 09/10” or “E09/10”
then go to the ERROR 09/10 troubleshooting sec-
tion. 
4. If the radio does not go into keyloading mode,
detach and reattach the keyloader cable. 
5. If there is still a problem, refer to the universal
connector illustration found in the schematic and
circuit board section of this manual, and short pins
8, 10, and 12 on the universal connector together.
If this causes the radio to go into keyloading
mode, then replace the keyloader cable.
6. If the radio still does not go into keyloading mode,
check the continuity of the the Front Cover/Display
Flex and make sure that the Flex is properly con-
nected to the Universal Connector and to the
Controller Board.
7. If the radio does go into keyloading mode, but
after starting the keyloading process the KVL dis-
play indicates “X FAIL”, then check to see if there
are transitions on pins 13, 15, and 16 of connector
P1 on the Secure Module during a keyload. 
8. If there are no transitions on any one of these
lines during a keyload, check the integrity and
continuity of the Expansion Board Connector. If it
is OK, try replacing the Controller Board.
9. If there are transitions on these lines, try replacing
the Secure Module.
10. If the KVL display indicates “X PASS” but you can-
not hear a keyload verification tone, then check
the volume of the radio. If the volume is OK, trou-
bleshoot the receive routing paths in the radio.
IV. SERVICE AID
A cable, Motorola kit number TDN9390A, 
connects the MTS 2000 radio universal connector to
the keyloader.
V. RETROFIT INSTRUCTIONS
A. General
This section gives instructions on retrofitting a
secure module into a secure-capable MTS 2000 radio.
The following paragraphs give directions on how to
physically install the secure module, how to enable the
secure options by updating the codeplug, and how to
tune the radio for optimum secure performance.
B. Physical Retrofit of Secure Module
The radio must be partially disassembled to install
the secure module.
Follow the disassembly procedures in section VI,
located toward the front of this manual. Proceed
through paragraph B (Disassembly to Board Level) step
8, where the front cover has been removed and the
controls flex has been disconnected from the controller
board. 
Continue through step 9a, to loosen the front
shield. Do not completely remove the front shield.
Simply raise the lower portion of the shield while the
opposite end is still connected to the top of the radio.
With the front shield raised, observe the controller
board which takes up the bottom third of the radio. On
the lower right corner of the controller board is an
empty female connector, which will be used to mate the
controller board to the secure module. Place the secure
module (component side toward controller board) over
the controller board with the secure modules male con-
nector placed above and aligned to the female
connector on the controller board. Interlock the connec-
tors by pressing down on the back of the the secure
module. The secure module has now been installed.
Reassemble the radio according to the reassembly
instructions in section VI, located toward the front of
this manual. Begin with paragraph E, step 5b.
C. Update Codeplug Through RSS
1. General
Once the secure module is installed, the radios
codeplug must be reprogrammed so that the new
hardware can be used. There will also be some
secure options that the user may or may not want
to activate. Table 3, at the end of this appendix,
gives a quick reference to several properties and a
Secure Module Kit KVL Kit Description
NTN7279A T3011_X DES
NTN7280A T3011_X DES-XL
NTN7281A T3010_X DVP
NTN7282A T3014_X DVP-XL
NTN7283A T3012_X DVI-XL
!Anti-static precautions must be observed at all
times.
CAUTION 
						

							54
brief description for each parameter. Refer to the
RSS manual for general instructions in the use of
RSS.
2. Set Secure-Equipped Field
The radio must be reprogrammed to utilize the
secure module.  At the RSS main menu, press F4
for the CHANGE/CREATE/VIEW menu. Press F3
for the  Radio Wide Buttons, Switches, Display,
Scan, Phone screen. Press F2for Radio Wide
Options screen. Here, press tab to reach the
Secure Equipped field. Press up/down arrow keys
to select YES.
3. Set XL IC Present Field
If the secure module has an XL IC (the Range
Extension or -XL option), the radio must be repro-
grammed to show that this IC is present. While still
in the Radio Wide Options screen, press F6to see
Secure Options. Press Tab until the XL IC Present
field  is highlighted. Press up/down arrow keys to
select YES. If the secure module does not have an
XL IC, set the XL IC Present field to NO.
4. Enable Secure On Desired Channels
To actually use the secure option, Secure must be
enabled on the channels for which it is desired. A
channel can be strapped to secure-only, or clear-
only, or secure/clear-selectable.
For conventional channels, proceed as follows:
Press F4at the Main Menu to see the
CHANGE/CREATE/VIEW menu. Press F6to see
Conventional Systems, Personalities, MDC,
Options. Press F3to see Conventional Personali-
ties, Options. Press F6to see the SECURE
OPTIONS screen. Press Tab to select the
Secure/Clear Strapping field.
For trunking channels, proceed as follows: Press
F4at the Main Menu to see the CHANGE/CRE-
ATE/VIEW menu. Press F4to see Trunking
Systems, Personalities, Call Lists, Options screen.
Press F4to see Trunking Personalities: Talk
Groups, Emergency Options, etc. Press Tab to
select the Strapping field. An Announcement Group
must be specified for the Strapping parameter to
appear. This selects the Announcement Group
Strapping. Press F7to select Talk Groups. Press
Tab to select the strapping of each Talk Group.
5. Other Secure Options
There are other secure options that can be
changed on a per-channel basis, such as: Proper
Code Detection, Transmit XL, or CFB. For conven-
tional channels, these options are found on the
same screen as Secure/Clear Strapping
(F4/F6/F3/F6). These options are XL Transmit,
Scan Holdoff Strapping, RX Modulation, and Proper
Code Detect. For trunking channels, the onlyselectable option is Proper Code Detect. This can
be found by going to the MORE OPTIONS screen
(F9) from the screen that was used to select
secure/clear Strapping for trunking channels.
D. Secure Retrofit Tuning
After installing a secure-retrofit board into a radio,
the secure TX deviation and the secure RX discrimina-
tor level must be tuned. Follow the procedure outlined
in section III of this publication for the tuning of these
two secure-related alignments.
The TX deviation balance (compensation) does not
need to be performed as part of the secure retrofit pro-
cedure. Use the transmit deviation balance
(compensation) procedure as outlined in this appendix,
section III paragraph B, only when a complete radio
alignment is being performed with a secure board
installed.
VI. SECURE ALIGNMENT PROCEDURE
A. General
For optimum radio performance, the secure trans-
mit deviation and the receive discriminator level must
be set. Refer to SECTION V, RADIO ALIGNMENT
PROCEDURE, for a description of the radio alignment
test setup, an RSS service menu overview, and for gen-
eral radio tuning procedures. All normal radio tuning
should be performed in the proper sequence before
proceeding with secure tuning.
Note that the transmit deviation balance (compen-
sation) tuning must be performed differently if a secure
board is installed in the radio. Follow the procedure
changes outlined below when tuning transmit deviation
balance, and complete the normal tuning. Then pro-
ceed with the additional tuning for secure TX deviation
and secure RX discriminator level tuning.
B. Transmit Deviation Balance (Compensation)
When tuning with a secure board installed, the cou-
pling capacitor inside the RKN4035A Test Cable will
cause rolloff of the low port modulation. To fix this, the
cable should be dc coupled (VOL position) and an
external coupling capacitor (1.3µF or larger) must be
placed in series with the signal source input to the
AC/DC MTR.
Follow the Transmit Deviation Balance (Compensa-
tion) procedure outlined in section V paragraph G,
except change step 3 as follows:
3. Set the RTX4005B Test Box meter selector switch
to the VOL position, and connect the signal
source to the AC/DC MTR port thru a 1.3µF capaci-
tor. Inject an 80 Hz tone at 100mVrms thru this
capacitor. Keep the ac voltmeter in parallel to the
AC/DC MTR input to ensure the proper input signal
level. 
						

							55
C. Secure TX Deviation
Transmit deviation balance compensation and
transmit deviation limit adjustments should be complet-
ed before secure deviation is adjusted. Remember to
use the new transmit deviation balance procedure out-
lined in paragraph B before performing the following
steps.
1. From the SERVICE menu, press F2to select
TRANSMITTER alignment.
2. Press F8to select the SECURE TX DEV softpot.
3. Press F6to key the radio on the test frequency.
The screen will indicate that the radio is transmit-
ting.
4. Measure the secure deviation on your service mon-
itor.
5. Use the up/down arrow keys to adjust the secure
deviation per Table 2.
Table 2.  Secure Deviation
6. Press F6to dekey the radio. Press F8to program
the softpot value.
7. Press F10to return to the TRANSMITTER menu.
D. Secure RX Discriminator Level
1. Set the RTX4005B Test Box meter selector switch
to the MX DISC position, and connect an ac volt-
meter (capable of 1mV resolution on a 2V scale) to
the test box AC/DC meter port.
2. From the SERVICE menu, press F3 to select
RECEIVER alignment.
3. Press F8to select the SECURE DISCRIMINATOR
LEVEL softpot. The screen will indicate the receive
test frequency to be used.
4. Set the RF test generator to the receive test fre-
quency.  Set the RF level at the radio standard
antenna port to 1mV (-47dBm) modulated with 3.0
kHz FM deviation of a 1 kHz tone.
5. Use the UP/DOWN arrow keys to obtain a discrimi-
nator level between 206 - 218mVrms (target value
of 212 mVrms) observed on the ac volt-meter.
6. Press F8to program the softpot value.
7. Press F10to return to the RECEIVER menu.
Channel Spacing (KHz) Secure Deviation (KHz)
25 / 30 2.91 - 3.06
20  (VHF/UHF) 1.69 - 1.84
20  (821-824, 866-869) 1.69 - 1.84
12.5 N/A 
						

							56
Possible Radio Wide/ Used in
Parameter Default Settings Per Channel Conv/Trunk Description
Secure  No Yes/No Radio Wide Both Notifies radio that Secure
EquippedModule is present
XL IC Present No Yes/No Radio Wide Both Notifies radio that Secure
Module contains XL IC
Secure/Clear Select Select/ Per Channel Conv Sets channel to Clear-Only
Strapping Clear/ or Secure-Only or user
Secure Selectable
Strapping Clear Select/ Per Channel Trunk Sets channel to Clear-Only
Clear/ or Secure-Only or user
Secure Selectable
XL Transmit Enable Enable/ Per Channel Conv Enables TX XL operation or
Disable disables for CFB
Scan Select Non-XL&XL Non-XL/ Per Channel Conv Selects between Non-XL and
Non-XL&XL XL Scan Unsquelch Duration
Scan Holdoff Both Both/ Per Channel Conv Scan for Clear or Secure or
Strapping Clear Only/ Both on a particular 
Secure Only channel
RX Modulation 2-Level Rx Auto Rx/ Per Channel Conv Tells radio to look for 2&4
2-Level Rx -level signals or 2-level
signals only
Proper Code Enabled Enabled/ Per Channel Conv Enables RX proper code
Detect (Conv) Disabled detection
Proper Code Disabled Enabled/ Per Channel Trunk Enables RX proper code
Detect (Trunk) Disabled detection
TX Clear Enabled Enabled/ Radio Wide Both Enables alert tone when 
Alert Tones Disabled PTT is pressed while in
the Clear mode
Periodic Keyfail Enabled Enabled/ Radio Wide Both Enables a Keyfail Alert
Alert Tone Disabled Tone to sound periodically
in a key-fail condition
Non-XL Scan 275mS 0-6375ms Radio Wide Both The time after an activity
Unsquelch detect that radio will wait 
Durationon channel without an
unsquelch in Non-XL mode
XL Scan 875mS 0-6375ms Radio Wide Both The time after an activity
Unsquelch detect that radio will wait 
Durationon channel without an
unsquelch in XL mode
Table 3. RSS Secure Parameters 
						

							HT 1000,  MT 2000,  MTS 2000, 
and MTX Series
Handie-Talkie
®Portable Radios
Service Section
TM TM TM
Motorola 
8000 West Sunrise Boulevard
Fort Lauderdale, Florida  33322
68P81200C40-O*6881200C40*