Download UPDATE NOTIFICATION

PROGRAMMABLE PRINTING DEPOSITORY WITH ENVELOPE DISPENSER OPTION
Remote Diagnostic Interface (RDI)
The EDS may be controlled via the RDI. The RDI is a hardware interface
which echoes the information on the LEDs and may also be used to drive the
board reset line.
START-UP MODE
Test Sequence
At start-up the following sequence of events takes place:
z Call initialization code
z Execute the tests in the following order:
z Test 1H – Microcontroller confidence and EPROM sumcheck
z Test 2H – SRAM data test
z Test 3H – SRAM address test
z Clear all SRAM to zero
z Pass control to the application firmware.
Test Router
Purpose
The Test Router controls the execution of the depository Execution Processor
diagnostics.
Test Results
LEDs
Status
0H
Start-up passed
EH
CPU quick check failed
FH
CPU probably stuck at reset
Note
The error codes displayed by the router do not flash.
Test 1H - Microcontroller Confidence and EPROM Sumcheck
Purpose
To test the microcontroller (MCU), check that the contents of the EPROM are
valid and also check the functionality of the A/D converter.
Test Results
LEDs
Status
0H
Pass
8H
MCU ALU fault
9H
MCU RAM fault
AH
MCU TIMER fault
BH
MCU interrupt control register fault
CH
MCU serial control register fault
DH
EPROM sumcheck fail
EH
A/D converter fail
13.4-22