Ricoh A172 - Page 471

Tech Service Bulletin No. A172/A199 – 008
Page 3 of 3
NOTES:
(*1)
If the input value is the same as the Toner Sensor Control Target, raise or lower the input value by
0.01V. (If the value input is the same as that indicated, then the adjustment is not recognized.)
(*2)
The value displayed may be 0.01~0.02 V less than that input. If the Vref value is lower than 2.15V or
higher than 2.85V, it will automatically be adjusted to 2.15V (lower level) or 2.85V (higher level) after
copies have been made.
(*3)
The machine may enter the forced toner supply mode when copies are being made but please wait until
it finishes.
Remarks
(1)
In cases when the machine condition is poor (such as process control does not succeed or the
developer gamma is more than 5), replace the developer and follow the “Necessary action when
replacing the developer” procedure reflected in this bulletin.
(2)
For machines connected to a controller, perform Calibration as necessary.
(3)
If the toner max M/A target (SP Adjustment page 4) is changed, reset it to the default setting (1.0
mg/cm
2
) before performing any of the provided procedures.
4. Identification of new toner
Company Toner Name
Ricoh Color Toner Type J Black
Ricoh Color Toner Type J Yellow
Ricoh Color Toner Type J Magenta
Ricoh
Ricoh Color Toner Type J Cyan
SVN SC106/SDC206 BLK Type J
SVN SC106/SDC206 YLW Type J
SVN SC106/SDC206 MAG Type J
Savin / Gestetner
SVN SC106/SDC206 CYN Type J
The new Type toner “J” was implemented for Savin beginning with the April, 98 production, however the
cartridge graphics and product codes were not changed until the June production. The April and May
productions which is the Type “J” toner, is identified / differentiated with a red lot number printed on the
cartridge carton. See the following chart for details on toner identification:
Gestetner/Savin TONER PRODUCT CODE Ricoh TONER PRODUCT CODES
Toner
Color
Type “F”
Current
Type “J”
(April/May)
Red Lot #
Type “J”
June and
onward
Type “F”
Current
Type “J”
(April/May)
Red Lot #
Type “J”
June and
onward
Black 5221 5221 5242 889755 889755 887813
Yellow 5222 5222 5243 889756 889756 887814
Magenta 5223 5223 5244 889757 889757 887815
Cyan 5224 5224 5245 889758 889758 887816