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™...

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...

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...

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...

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...

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*