D-Ram Test (1: D-Ram) - Canon iR1600 Service Manual

CHAPTER 13 TROUBLESHOOTING

5.5.3 D-RAM Test (1: D-RAM)

Press '1' on the keypad while the Test Mode menu is indicated to select D-RAM Test
mode. Press '1' through '4' on th e keypad in D-RAM Test mode for the following:
'1' on Keypad
Use it to check data write/read operations for the entire area of the D-RAM.
If an expansion memory (option) is mounted, its area will also be checked. If an error oc-
curs during a check, the testing will be suspended, and an error will be indicated on the dis-
play.
'2' on Keypad
Use it to check data read operations for the entire area of the D-RAM.
If an expansion memory (option) is mounted, its area will also be checked. If an error oc-
curs during a check, the testing will be suspended, and an error will be indicated on the dis-
play.
'3' on Keypad
Use it to check data read/write operations for the built-in RAM of the CPU.
'4' on Keypad
Use it to check data write/read operations for the expansion memory in the expansion slot
(J271); memory size indication, for RAM area.
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COPYRIGHT© 2002 CANON INC. 2000 CANON iR1600/iR2000 REV.1 JAN. 2002