Ricoh D129 - Page 1195

Boards
SM 177 D629
Fax Option
Type 5002
(D629)
ROM
 4MB flash ROMs for system software storage
SRAM
 The 512 KB SRAM for system and user parameter storage is backed up by a lithium battery.
Memory Back-up
 A rechargeable battery backs up the SAF memory (DRAM) for 12 hours.
 A lithium battery backs up the system parameters and programmed items in the SRAM, in
case the base copier's main switch is turned off.
Switches
Item Description
SW1 Switches the SRAM backup battery on/off.