Ricoh B246 SERIES, Manual, Page: 186 / 268

186
186
TD Sensor Initial Setting
„
Initialization: Done every time new developer is
installed.
z
TD sensor input is calibrated to give 3.0 V output.
This is the TD sensor reference voltage V
REF
„
V
REF
Update: Immediately after the machine is
turned on, or after recovery from auto off mode, if all
these conditions occur:
z
If fusing temperature is less than 100 C
z
If SP 3901 - Auto Process Control is enabled
z
If SP 3904 is at 2
„
V
REF
Update: Immediately after the machine is
turned on, or after recovery from auto off mode, if
process control was not done for 24 hours or more
z
The interval can be changed with SP 2966.
Service manual, section 6.9.10
ˆ
This must be done every time new developer is installed.
¾
V
CONT
(voltage input to the TD sensor) is calibrated so that V
T
(TD sensor
output) is about 3.0 V for new developer.
¾
This output voltage is V
REF
, and is the toner supply reference voltage.
ˆ
V
REF
is adjusted at the times shown on the slide, using readings from the TD and
ID sensors. At these times, the ID sensor and TD sensor are both recalibrated.
¾
To avoid reductions in copy speed, the calibration in the middle of a job can
be disabled with SP 2507 001.