Canon PC-D340 - D-Ram Tests

PC-D320/PC-D340/FAX-L400 Chapter 4: Maintenance and Service
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6.3 D-RAM Tests
D-RAM test menu is selected by pressing the numeric key 1 from the test mode menu. D-RAM
Test 1 writes data to the entire D-RAM region and reads it out to check that operations are
correct. D-RAM Test 2 just reads data at high speed.
Figure 4-20 D-RAM Test
Before D-RAM test, output all image data in image memory. When D-RAM
test is performed, all image data are cleared.
6.4 CCD Test
CCD test menu is selected by pressing the numeric key 2 from the test mode menu. The gain
auto adjustment is selected by pressing the numeric key 08 from the CCD test menu. In this
test, automatically correcting the contact sensor output and setting the contact sensor
parameters.
13824K: D-RAM total memory capacity (bytes)
Operating
Normal end
Error
Error display
Restart by pressing
Start key
Error display
WRT: data written
RD: data read
ADR: address
1: D-RAM 13824K
. . . .
1: D-RAM 13824K
complete (no error)
WRT=33CC RD=33EC
ADR=BF840201
1: D-RAM 13824K
complete (error)
: Indicates an address for which write testing is complete.
. : Indicates an address for which read testing is complete.