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Chapter 5. Troubleshooting
The table below summarizes errors to be checked carefully before you determine them to be a fault.
5.1 Errors That Occur When Writing to PROM
(1) When Newly Purchased
Programming adapter
(2) Previously Written Normally
Programming adapter
5.2 MCUs Do Not Function Normally
The program operates normally on the emulator, but when the MCU that has normally been written
is attached the same program does not function normally.
(1) In the emulator, NOPs are often inserted in the area where the program has not been read, therefore
(2) The emulator and the actual MCU may differ in characteristics. Consult the user's manual of the
Cause
Is the adapter attached to the correct position of the PROM
programmer?
Is the MCU attached to the correct position?
PROM programmer
Is the correct device selected?
The IC socket of the PROM programmer may be stained. The
Contact failure
socket needs replacing.
Cause
Is the adapter attached to the correct position of the PROM
programmer?
Is the MCU attached to the correct position?
Is the correct device selected?
PROM programmer
The IC socket of the PROM programmer may be stained. The
socket needs replacing.
Contact failure
The PROM programmer connector (28-pin pin-header) at which
the PROM programmer is contacted may be stained. Clean it
with alcohol, etc.
the program happens to appear functioning normally even though it may have gone wild. Check
your program again.
emulation pod to check for differences in characteristics again.
Remedy
Remedy
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See page
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See page
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