Motorola Two Way Portable Radio Ht1000 Jt1000 Mt2000 Mts2000 Mtx Series 6881200c75 B Manual

Appendix A- 3
Troubleshooting Secure 
OperationsRefer to Section 6 of this radio service manual for disassembly and 
reassembly information, refer to Section 9 “Removal And Installation” 
for secure module and pad orientation, and refer to the radio theory/
troubleshooting manual for a general overview of troubleshooting 
information and procedures. 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...

Appendix A- 42. 2.Connect the KVL to the radio via the TDN9390A keyloader 
cable. When 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. 3.If the radio displays “ERROR 09/10” or “E09/10” then go to the 
ERROR 09/10 troubleshooting section. 
4. 4.If the radio does not go into keyloading mode, detach and 
reattach the keyloader cable. 
5. 5.If there is still a problem, refer to the...

Appendix A- 5 enable the secure options by updating the codeplug, and how to tune 
the radio for optimum secure performance.
Physical Retrofit of 
Secure ModuleThe radio must be partially disassembled to install the secure module.
Follow the disassembly procedures in Section 6, located toward the 
front of this manual. Proceed through “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...

Appendix A- 6 Enable Secure On Desired 
ChannelsTo 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 F4 at the Main 
Menu to see the CHANGE/CREATE/VIEW menu. Press F6 to see 
Conventional Systems, Personalities, MDC, Options. Press F3 to see 
Conventional Personalities, Options. Press F6 to see the SECURE 
OPTIONS screen....

Appendix A- 7 with the additional tuning for secure TX deviation and secure RX 
discriminator level tuning.
Transmit Deviation Balance 
(Compensation)When tuning with a secure board installed, the coupling 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...

Appendix A- 8level at the radio standard antenna port to 1mV (-47dBm) 
modulated with 3.0 kHz FM deviation of a 1 kHz tone.
12.Use the UP/DOWN arrow keys to obtain a discriminator level 
between 206 - 218mVrms (target value of 212 mVrms) observed on 
the ac volt-meter.
13.Press F8 to program the softpot value.
14.Press F10 to return to the RECEIVER menu.
Removal And InstallationRefer to Appendix Figure 2, Secure Module Location Detail, when 
adding, removing, or replacing the secure module and/or secure...

Appendix A- 9
Appendix Figure 2.   Secure Module Location Detail 

Appendix A- 10Appendix A Table 4.  RSS Secure Parameters
ParameterDefault Possible
SettingsRadio 
Wide/Per 
ChannelUsed in 
Conv/TrunkDescription
Secure 
EquippedNo Yes/No Radio Wide Both Notifies radio that Secure 
Module is present
XL IC Present No Yes/No Radio Wide Both Notifies radio that Secure 
Module contains XL IC
Secure/Clear
StrappingSelect Select/
Clear/
SecurePer Channel Conv Sets channel to Clear-Only
or Secure-Only or user
Selectable
Strapping Clear Select/
Clear/
SecurePer Channel Trunk...

 Appendix B- 1
Appendix B
12
Model History Tables
The following five tables include all of the HT 1000, JT 1000, MT 2000, MTS 2000, and MTX Series models 
from the beginning of this product line to date. Each table includes model number, model number 
description, and the kit numbers of the transceiver board (Xcvr Bd) and the controller board (Ctrl Bd) that 
shipped with that particular model. The chart also lists replacement transceiver board, controller board, 
and codeplug.
  
Appendix B Table 1.  HT...

Appendix B- 2
H01RDC9AA1BN UHF B1 2-F Closed 4-1W NUE7240B NTN7092B NUE7240D NCN6129BD64W
H01RDC9AA1CN UHF B1 2-F Closed 4-1W NUE7240C NCN6129A NUE7240D NCN6129B
D64W
H01RDC9AA1CN UHF B1 2-F Closed 4-1W NUE7240C NCN6129B NUE7240D NCN6129B
D64W
H01RDC9AA1DN UHF B1 2-F Closed 4-1W NUE7240D NCN6129C NUE7240D NCN6140C
D64W
H01RDC9AA1DN UHF B1 2-F Closed 4-1W NUE7265A NCN6141A NUE7265B NCN6140C
F91P-3
H01RDC9AA1DN UHF B1 2-F Closed 4-1W NUE7265B NCN6141B NUE7265B NCN6140C
F91P-3
H01RDC9AA1DN UHF B1 2-F Closed...