Service manual

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
13-119
3. D-RAM test <1: DRAM>
Performs a write/read check on data in all areas of the D-RAM. When 8MB expan-
sion memory has been installed, also checks the expansion memory area.
When an error occurs during checking, the test will be aborted and an error mes-
sage will be indicated on the display.
Figure 13-516
When a D-RAM test is performed, the image data saved in the image memory are
cleared. Therefore, output the images before performing the test when there are
saved images.
Caution:
1:D-RAM 7168K
. . . . . . * * * * * * *
1:D-RAM 15360K
complete (no error)
7168K: D-RAM’s total memory volume (in bytes)
* : indicates write test completed bank.
. : indicates read test completed bank.
Running
Normal completion
WRT= 33CC RD= 33EC
ADR= BF840201
When an error occurs
1:D-RAM 15360K
complete (error)
Error completion
Reopens when
start key is
pressed
Error display
WRT: Written data
RD: Read data
ADR: Address
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