Renesas PCA7408 User Manual
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Chapter 5. Troubleshooting
The tables 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
(2) Previously Written Normally
Cause
Remedy
Is the adapter attached to the correct position of the PROM
programmer?
programmer?
Is the MCU attached to the correct position?
Is the area set correctly?
Is the correct device selected?
The IC socket of the PROM programmer may be stained. The
socket needs replacing.
socket needs replacing.
See page
Programming adapter
PROM programmer
Contact failure
9
10
10
8
-
Cause
Remedy
Is the adapter attached to the correct position of the PROM
programmer?
programmer?
Is the MCU attached to the correct position?
Is the area set correctly?
Is the correct device selected?
The IC socket of the PROM programmer may be stained. The
socket needs replacing.
socket needs replacing.
The PROM programmer connector at which the PROM
programmer is contacted may be stained. Clean it with alcohol,
etc.
programmer is contacted may be stained. Clean it with alcohol,
etc.
See page
Programming adapter
PROM programmer
Contact failure
9
10
10
9
-
-