Memory Clear - Ricoh K-C3 Service Manual

B245/B276/B277/B268/B269 Service Manual
document feeder (or platen cover) is open. Example 2 indicates that the paper size and its
orientation is "A4 LEF," and that the document feeder (or platen cover) is closed.
The "Paper Size" data starts with eight digits. The first digit indicates the output of L2; the
second digit, L1; the third digit, W2; and the fourth digit, W1. The other four digits (from the
fifth through the eighth) are always "0000." In Example 1, the APS sensors L2 and L1
detect paper (W2 and W1 do not).
In Example 2, APS sensors W2 and W1 detect paper (L2 and L1 do not). The paper size
and its orientation is based on the outputs of these four APS sensors.
The "DF Open" data shows "1" or "0," indicating if the document feeder (or platen cover) is
open or closed respectively. The data is based on the output of the platen cover sensor [A].

Memory Clear

The basic machine (the machine without the optional controller box) stores all the data in
the NVRAM on the BICU. The data is cleared by SP 5801 2 (see exceptions)
002 Main Motor Reverse
003 Quenching Lamp
The GDI machine (the machine with the optional controller box) stores the engine data in
the NVRAM on the BICU, and stores the other data in the NVRAM on the optional controller.
To distinguish between the engine data and the other data, see SP 5801 3 through 15. This
service program (SP 5801) handles the controller data. Any data that is not handled by SP
5801 is the engine data. The data in the BICU NVRAM (engine data) is cleared by SP 5998
1 while the data in the controller NVRAM (controller data) is cleared by SP 5801-xxx (see
exceptions)
002 Main Motor Reverse
003 Quenching Lamp
Machine
Basic All data
GDI
Engine data
Data NVRAM
BICU
BICU
Cleared by
SP 5801 2
SP 5998 1 Any data other
18-Jan-06
Remarks
159