Configuration switches, Internal battery – Toshiba T300MVi User Manual
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9. Configuration Switches
There are two configuration DIP switches (marked “DS1”) located on the lower 
right-hand portion of the interface board, below the Ethernet port. 
 
Switch #1......... Firmware update switch. Place in “OFF” position for normal 
operation, and in the “ON” position only when new application 
firmware is to be downloaded to the unit. Refer to section 16 
for more information. 
Switch #2......... RS232 port selection switch. When “OFF” at unit startup, the
RS232 port will act as the serial console, regardless of the 
port’s configuration as indicated on the web interface (refer to 
section 13.1 for more information on the serial console). When 
“ON” at unit startup, the RS232 port carries whatever control 
protocol was assigned to it via the web interface. Note that the 
state of this switch is only detected when the interface boots up 
(from drive power-up or as the result of a soft reset, such as 
after a web page “submit” is performed). 
 
 
10. Internal Battery
The interface has an internal coin-cell type battery that is currently only used to 
support the real-time clock when the unit is unpowered. This battery is 
designed to last the lifetime of the product under normal use. However, if the 
interface is left unpowered for several years, the battery may become 
exhausted. If the battery becomes discharged, it can be replaced by removing 
all power sources from the connected drive according the required safety 
procedures, and then carefully popping out the discharged battery and 
replacing it with a Panasonic BR1632 or equivalent component.