Toner Density Recovery; Detect/Fixed Mode Selection; Toner Amount Changing; Id Pattern Bias Voltage Adjustment - Ricoh FT5580 Service Manual

7. Toner Density Recovery

When
Purpose
Target
Measure
How
1. Set SP 60, then press the Enter key and the Start key.

8. Detect/Fixed Mode Selection

When
Purpose
Target
Measure
How
1. Set SP 30 to select fixed supply mode.

9. Toner Amount Changing

When
Purpose
Target
Measure
How

10. ID Pattern Bias Voltage Adjustment

When
Purpose
Target
Measure
How
: Vsp is extremely high (toner density low).
: To maintain correct toner density.
: Vsp < 0.5 volts
: SP 60
: The copier runs and the toner supply clutch turns on
( 1 0 0 % ) u n t i l V s p b e c o m e s b e l o w 0 . 5 v o l t s . V s p a n d
Vsg are displayed on the guidance display.
("V0" is Vsg "V1" is Vsp)
T h e I D s e n s i n g s y s t e m p r o b l e m c a n n o t b e s o l v e d
during a service call.
function.)
Manually turn on the toner supply mechanism.
Detect supply mode (Factory setting) changed to fixed
supply mode.
SP 30
Toner supply clutch turns on every copy cycle in fixed
supply mode.
The factory setting for toner supply amount
not sufficient due to the customer's originals.
T o s a t i s f y t h e t o n e r s u p p l y a m o u n t n e e d e d f o r t h e
customer's original toner consumption.
Detect mode - 30 (Factory Setting), 15, 45 or 60 %
Fixed mode - 7, 4, 11 or 14 %
Detect Mode - SP 31
Fixed Mode - SP 32
The toner supply clutch on period is changed.
Customer wants to change the overall image density
of the copies.
To change toner concentration inside development unit.
B i a s V o l t a g e = 5 0 0 ( f a c t o r y s e t t i n g ) , 3 8 0 ( d a r k e s t )
470 (darker), and 530 (lightest)
SP 33
I D p a t t e r n b i a s v o l t a g e i s c h a n g e d .
supply threshold is changed.
(Detect supply mode does not
3-17
12 June 1987
(30 %) is
S o , t h e t o n e r