Canon multipass c3000 Service Manual (en)

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6.2.3 D-RAM tests
Pressing the 
1
button from the test mode menu selects the D-RAM tests.  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.
6.2.4 CS tests
Pressing the 
1
button from the test mode menu selects the CS tests. 
CS SHADE ADJUST
is
used to enter the contact sensor's shading data.
Performs the same operation as 
#3 CALIBRATION
in 
SPECIAL MODE
.
Details on 
CS SHADE ADJUST
, see 
3.1 Shading Data Adjustment on page 3-6
.
Tests [2] is not used in the field.
Part 1: Facsimile
3-46
1:D-RAM             768K
COMPLETE      768K
768K: D-RAM total memory capacity (bytes)
✽ 
: Indicates an address for which write testing is complete.
  . : Indicates an address for which read testing is complete. 
Operating
Normal end
WRT= 33CC  RD= 3333
Error
Error display
Restart by pressing
START/COPY key.
Error display
WRT : data written
RD :    data read
ADR :  address  
✽ ✽ ✽
.   .   .   .   .
✽ ✽ ✽
ADR= 2800
COMPLETE      768K
Figure 3-27 D-RAM Test
REFERENCE