Ricoh TH-C1, Технический бюллетень

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T
echnical
B
ulletin
PAGE: 3/5
Reissued: 2-Jun-06
Model:
Model TH-C1
Date:
19-Jul-05
No.:
RB156005e
Symptom Corrected Version
The bias voltage for Toner Refresh mode was changed to reduce the amount
of toner that sticks to the ITB cleaning blade.
･
SP2-400-08 (Cleaning Bias LL1 Toner revital)
･ SP2-401-08 (Cleaning Bias LL2 Toner revital)
･
SP2-402-08(Cleaning Bias NN1 Toner revital)
･ SP2-403-08(Cleaning Bias NN2 Toner revital)
･
SP2-404-08(Cleaning Bias HH Toner revital)
[0 ~ 2000 /
1100 (1400) / 10 volt/step]: ( ): Old default
The machine freezes and does not accept the command from RC gate to
update the firmware when in Low Power mode. (“ROM Updating” is displayed
on the LCD).
Note: In addition to this BICU version, be sure to update the main unit
controller firmware to V1.06 or later.
V1.06
(Some changes were made for the Japan model only).
Note: In addition to this BICU version, be sure to update the main unit
controller firmware to V1.06 or later. V1.05
SP modes for Toner Refresh mode and PCU rotation when repeat B/W
duplex copies/prints are made. This is to ensure that images (toner with
silicon oil) do not stay on the ITB and get on the next sheet of paper.
Note: Details will be explained in a separate RTB (TBA).
SP2-981-003:
[0 ~ 200 / 30 / 1 sheet/step]
SP2-981-004:
[0 ~ 200 /
6 / 1 sheet/step]
SP2-984-001 (Duplex PCU Idling Setting - Total Period: T1)
[6 ~ 200 /
60 / 1 s/step]
SP2-984-002 (Duplex PCU Idling Setting - Printing Prohibited Period: T2)
[6 ~ 60 /
6 / 1 s/step]
SP3-970-005 (Image Area Rate – Oil end)
[0 ~ 10.0 /
0.5 / 0.1 %/step]
Note: In addition to this BICU version, be sure to update the main unit
controller firmware to V1.05 or later.
V1.04
Sometimes, the transfer belt sensor incorrectly declares a “no paper”
condition when it detects a high-density solid image, even if there is paper at
the sensor.
The leading edge is dirty with toner. To improve this, the ITB cleaning time
(ON time for the cleaning brush) was increased. V1.03