Ricoh Taurus-C1a Technical Bulletin page 316

Model:
Taurus-C1/P1 (D074/D075/M044)
Checking the Image Quality
Do the following procedure to check if the laser unit contains any dust.
For the copier model (D074/D075)
Print out the "Shading" test pattern from SP4417-001: 18 and check the image quality.
7
Make sure there are no image defects possibly caused by foreign materials in the laser
unit. If the test pattern exhibits an image defect (for example, white lines), take out the
affected laser unit and check for any foreign substances on the mirrors, the lenses, or
the toner shield glass. It is recommended to first check the toner shield glass.
8 Execute SP3011-004 (Full MUSIC) to complete the procedure.
For the printer model (M044)
7. Print out the RGB and K full dot test pattern from SP2109 as indicated below.
SP2109-003: "26" Full Dot Pattern
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T B
ulletin
Date:
20-Jul-12
PAGE: 8/9
No.:
RD074081