Test Pattern Image Mode - Ricoh C231 Service Manual

INPUT/OUTPUT CHECK MODE

4.5 TEST PATTERN IMAGE MODE

This function is used to determine which printer component is causing an image
quality problem on the master.
In this mode, the background pattern that is printed covers the entire sheet of
paper.
- Procedure -
1. Place paper on the paper table.
NOTE: To reduce thermal head load, use the smallest paper size possible, i.e.
the smallest paper width on which the part with the image problem can
be printed.
2. Access SP mode.
3. Input SP number 90 and enter "1". Then, press the Enter (#) key.
4. Press the Clear Modes key to leave the SP mode.
5. Carry out the master making process (an original is not necessary).
6. Make some prints and check the image.
NOTE: The SP mode number 90 setting returns to the default (0) after the above
procedure.
- Assessment -
If the printout is normal, a Part A component is defective.
If the printout is abnormal, a Part B component is defective.
C231/C237/C238
A
X e n o n
L a m p
S c a n n e r
Motor
4-28
B
M P U
Master Feed
Motor
T h e r m a l
H e a d
C231M500.WMF
SM