Specifications

2-4
2.2 Memory back up
F-360 F-320
SDRAM JP3 on the main control PCB JP2 on the main control PCB
SRAM JP4 on the main control PCB JP5 on the main control PCB
SRAM --- T h e S R A M , w h i c h i s b a c k e d - u p b y a l i t h i u m b a t t e r y , i s u s e d t o s t o r e u s e r p r o g r a m m e d
information.
SDRAM --- T h e S D R A M i s u s e d f o r b u f f e r , w h i c h i s a l s o b a c k e d - u p b y a b a t t e r y , i s u s e d t o s t o r e
memorized documents.
NOTE: F-360: JP3, JP4 should remain in the “ON” position at all times.
F-320: JP2, JP5 should remain in the “ON” position at all times.
For F-360:
Jumper JP3 on the main control PCB is used for battery back up of the SDRAM. Removing JP3 will
initialize the SDRAM. If the power is turned off, the battery will provide up to72 hours (8MB) of back up
when fully charged.
Jumper JP4 on the main control PCB is used for battery back up of the SRAM. All user programmed data
and internal memory switch settings are held in SRAM. Removing JP4 will initialize the SRAM.
If the power is turned off, the battery will provide up to five years of back up when fully charged.
For F-320:
Jumper JP2 on the main control PCB is used for battery back up of the SDRAM. Removing JP2 will
initialize the SDRAM. If the power is turned off, the battery will provide up to 72 hours (8MB) of back up
when fully charged.
Jumper JP5 on the main control PCB is used for battery back up of the SRAM. All user programmed data
and internal memory switch settings are held in SRAM. Removing JP5 will initialize the SRAM.
If the power is turned off, the battery will provide up to five years of back up when fully charged.