Circuit Description; Troubleshooting; Secure Operations; Error 09/90 - Motorola ASTRO Digital Saber Service Manual

Circuit Description

Troubleshooting

Secure Operations

Error 09/10,

Error 09/90

Keyload

8-2
The secure module operates from three power supplies (UNSW_B+,
SW_B+, and +5V). The +5V and the SW_B+ are turned on and off by
the radio's on/off switch. The UNSW_B+ provides power to the secure
module as long as the radio battery is in place.
Key variables are loaded into the secure module through connector
J601, pin 15. Up to 16 keys (depending on the type of encryption
module) can be stored in the module at a time. The key can be infinite
key retention or 30-seconds key retention, depending on how the code
plug is setup.
The radio' s host processor communicates with the Secure Module on
the Serial Peripheral Interface (SPI) bus. The host processor is the
master on this bus, while the secure module is a slave on the bus. The
SPI bus consists of five signal lines. Refer to Table 1 for signal
information. A communications failure between the host processor
and the secure module will be indicated as an "E E E E R R R R R R R R O O O O R R R R 0 0 0 0 9 9 9 9 / / / / 1 1 1 1 0 0 0 0 " message
on the radio display.
Refer to the Basic Service Manual, Motorola publication number
68P81076C05 for disassembly and reassembly information. A key
variable loader (KVL) 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, it must be
replaced.
The ASTRO Digital XTS 3000 radio automatically performs a self test
on every power-up. Should the radio fail the self tests, the display will
show "E E E E R R R R R R R R O O O O R R R R 0 0 0 0 9 9 9 9 / / / / 1 1 1 1 0 0 0 0 " or "E E E E R R R R R R R R O O O O R R R R 0 0 0 0 9 9 9 9 / / / / 9 9 9 9 0 0 0 0 " accompanied by a short beep.
If the display shows "E E E E R R R R R R R R O O O O R R R R 0 0 0 0 9 9 9 9 / / / / 1 1 1 1 0 0 0 0 " or "E E E E R R R R R R R R O O O O R R R R 0 0 0 0 9 9 9 9 / / / / 9 9 9 9 0 0 0 0 ," the radio failed
the secure power-up tests and the host microcontroller was unable to
communicate with the secure module via the SPI bus. Turn the radio
off and back on. If the radio still does not pass the self tests, then a
problem exists with the secure operations of the radio.
Troubleshooting information for "E E E E R R R R R R R R O O O O R R R R 0 0 0 0 9 9 9 9 / / / / 1 1 1 1 0 0 0 0 " is found in
Troubleshooting Charts.
When the keyloading cable is attached to the ASTRO Digital XTS 3000
radio and "K K K K E E E E Y Y Y Y L L L L O O O O A A A A D D D D I I I I N N N N G G G G " is not displayed on the radio's display, then
the radio has not gone into KEYLOAD mode. For troubleshooting
"KEYLOAD" failure, refer to Troubleshooting Chart, "Key Load Fail."
NOTE: ASTRO Digital SABER radios need a keyloader
that has the ability to keyload an ASTRO Digital
SABER radio. The keyloader must be either a "T -
- - - CX" or a "T - - - - DX" keyloader.