Canon FAX-L1000 - Manual (Page 42)

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FAX-L1000 Chapter 1: Safety and Precautions
3.2 Backed up by Rechargeable Battery
The data stored in the image memory on the SCNT board is backed up for about 12 hours by
the secondary vanadium-lithium battery.
3.2.1 Data backed up by rechargeable battery
Image data stored in the DRAM:
Image Mode
Transmission images Memory transmission
Sequential broadcasting
Delayed (broadcast) transmission
Confidential transmission
Polling transmission
Relay control transmission
Relay broadcast transmission
Reception images Memory reception
Confidential reception
NOTE
Memory clear list
If the power is turned on after the rechargeable battery backup time has been
exceeded, the memory clear list is automatically printed out. The memory
clear list is a list of image data that have been cleared from memory. If the
memory clear list cannot be printed due to printer engine trouble or run out of
paper, the fax sounds alarm, information for managing the storage status of
image data is erased from memory, then goes on standby. The operation that is
carried out when the memory clear list cannot be printed can be altered by
changing the setting of SSSW SW02 bit 0. For details, see
G3 Facsimile
SERVICE DATA HANDBOOK (Rev. 0) (supplied separately) .
After the memory clear list is printed out, information for managing the
storage status of image data is automatically erased from memory.
Conditions for image backup
1) Reception images
If power is interrupted during reception, only pages that have completely
been received are backed up, and the page that was in the process of being
received during the power interruption is deleted.
2) Transmission images
Only memory transmission images (including during standby for redial) are
backed up, and direct transmission is canceled.