Ricoh A156 - Page 77

Every 1000 Copies
After every 1,000 copies, the machine calibrates the following reference
values for the various processes that are used in process control.
NOTE:
If the auto process control mode has been disabled with SP3-801,
this process control cycle will not be performed.
After Adding New Developer
The technician must do the following SP mode after adding new developer.
IMAGE DENSITY CONTROL
V
SG
Reset
COPY IMAGE CONTROL
Auto ADS Gain Ad
j
ustment
DRUM POTENTIAL
CONTROL
V
L
Correction
Resets V
SG
to 4 ± 0.2 V.
DRUM POTENTIAL
CONTROL
V
R
Correction
Measures V
RP
Sets V
RG
= V
SG
Uses:
ID sensor
Affects:
Development bias
Drum char
g
e roller volta
g
e
Uses:
ID sensor
Affects:
Exposure lamp volta
g
e
Uses:
ADS sensor output
Affects: Development bias
Uses:
ID sensor
Affects:
Development bias
Toner suppl
y
clutch on time
Measures V
LP
Sets V
LG
= V
SG
Ad
j
usts ADS sensor ouput
volta
g
e for the ADS
sensor pattern to 2.7 ± 0.1
V.
IMAGE DENSITY CONTROL
TD Sensor Initial Settin
g
SP 2-214
Resets the TD sensor output to 2.5 ± 0.1 V
Resets ID correction for the V
SP
pattern to
zero
(
this affects development bias and
exposure lamp volta
g
e
)
Detailed
Descriptions
STM 2-29 A156/A160/A162