3 . R e p a i r I n s t r u c t i o n s
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SW 9.xx
3.
Self Test SW 9.xx
3.1
Microprocessor Unit MPU Test from
Controller/Supervisor
The microprocessor unit MPU of the controller and supervisor are checked. The
function of the internal MPU registers, flags and stacks is tested.
MPU Test Supervisor
The MPU test is performed in therapy mode and service mode after switch-on
prior to the RAM and ROM test.
MPU Test Controller
The MPU test is performed during the boot phase after the RAM and ROM test.
The operating system is not active in this phase.
Register Test
The following tests are performed:
•
Read-write capability of the registers
•
Cross-talk between the single bits
•
Address ability of the registers
•
Crosstalk between single words
Flag Test
Set and Reset Capability
The test checks whether the flag can be set and reset correctly according to
defined conditions.
Query Capability
The test checks whether the correctly set flags can also be evaluated correctly .
Stack Test
The function of the stack is tested by storing and reloading/reading a test
pattern.
Reactions in Case of an Error
of the MPU Test
Controller
If an error is detected during the MPU test the TLC
terminates the start procedure – therapy can not
be started. The error message is displayed in the
TSM service program:
•
Bit 7, BIOS init. error
•
Bit 8, Error in MPU test
Supervisor
If an error is detected during the MPU test the
following alarms are displayed:
In Therapy – Therapy Selection:
•
Hardware error RAM/ROM (SUP)
In TSM Service Program:
•
Error in MPU test
