Focus Adjustment - Ricoh FT5580 Service Manual

3. Focus Adjustment

When
Purpose
Target
Measure
How
1. Make three A3/LDG copies with the test chart.
2 . A d j u s t t h e f o c u s u s i n g S P 4 5 . R e f e r t o t h e l e t t e r p o r t i o n o n t h e
copies.
: The copy image is out of focus.
After adjusting the horizontal magnification.
: To maintain the correct focus.
: The copy image keeps proper focus.
: Adjust SP 47 (0.1 % per step, 15 steps)
: T h e f o u r t h a n d f i f t h m i r r o r a s s e m b l y h o m e p o s i t i o n
c h a n g e s t h e d i s t a n c e b e t w e e n t h e o r i g i n a l a n d t h e
drum surface.
3-45
12 June 1987