Konica Minolta IP-422, Service Manual

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Chapter 3 Field Service
3-18
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Memory Test
The memory test needs to be conducted if, after you have added memory, an unstable operation is observed
or a fault develops due to memory size.
The memory test includes a normal memory test and a detailed memory test.
The normal memory test is a test conducted upon normal booting up.
The normal memory test
In memory area of lower than 640 KB: Data read/write test, address test, and data test over the entire
memory area.
In memory area of higher than 640 KB: Data read/write test in 64 KB units.
The detailed memory test is a test conducted over the entire memory area as controlled from the service
port.
The detailed memory test
In memory area of lower than 640 KB: Data read/write test, address test, and data test over the entire
memory area.
In memory area of higher than 640 KB: Data read/write test over the entire memory area.
Memory Test Procedure
1.
Boot up HyperTerminal.
Refer to "Booting Up HyperTerminal".
2.
Press and hold down an ordinary key of computer immediately after turning the
copier's main power switch ON.
Press the key until the "Low Memory Test (Low Memory Passed)" count starts. As long as it is an ordi-
nary key, any key (e.g. "z", "6") can be pressed.
3.
The detailed memory test is conducted.
4.
Make certain that all memory tests found no problems ("Memory Passed" is then displayed).
When all memory is OK, the copier is able to normally start up.
If any test results are unacceptable (The value after the occurrence of "Ext Memory Passed" is less
than the amount expanded memory.), remove the added memory and run the memory test from the
beginning since the memory may be defective.