Intermec EasyCoder PX4i Service Manual page 159

Electronic Key Circuit (J30), Fingerprint-only option
Memory Card Adapter (J22)
EasyCoder PX4i and PX6i Service Manual
The optional electronic key circuit is an iButton which contains a real-time
clock. It has a built-in battery backup with a life of at least 10 years. When
the printer is on, the circuit is power-supplied via the CPU board and will
not consume any power from the battery. The circuit also contains 4Kbits
(500 bytes) of battery backed-up memory for the devices "lock:" and "stor-
age:".
The Electronic Key Circuit (J30) contains an integrated lithium bat-
tery. Replace only with original Electronic Key Circuits from Intermec.
Dispose of used Electronic Key Circuits according to local regulations
for lithium batteries.
Since the communication between the RISC processor and the electronic
key circuit is comparatively slow, the content of the key circuit is copied
to SDRAM at startup and used from there. At power off, the content is
read back to the key circuit, provided there is time enough. Thus, there is
a small risk that new data may be lost, before it has been saved back to the
electronic key circuit. The original data in the electronic key circuit will
not be damaged, if the read-back process should fail.
The CPU board has a built-in memory card adapter which can use
standard Type I CompactFlash memory cards with a size of 8MB to 1GB
(thickness 3.3 mm/0.13 in.). It is not suited for other types of memory or
I/O cards! Cards marked "CF+" and Type II cards (thickness 5.0 mm/0.20
in.) cannot be used.
In Fingerprint, CompactFlash cards can be used to expand the printer's
memory (device "card1:"). IPL does not support CompactFlash cards as a
means of expanding the memory.
Memory cards are only detected by the fi rmware at startup and must thus
be inserted in the memory card adapter before the power is switched on
or the printer is rebooted. Memory cards must only be emoved when the
power is off.
Preprogrammed CompactFlash Memory Cards
There are four types of preprogrammed CompactFlash memory cards from
Intermec.
• Font Cards
Font stored in font cards can only be used while the card is present in the
printer's memory card adapter.
• Font Install Cards (Fingerprint only)
Install additional fonts in the printer's memory. These fonts can be used
without the card being present.
• Firmware Cards
Install a new fi rmware kernel in the printer including standard fonts. Used
for upgrading the fi rmware or switching between Fingerprint and IPL.
• Confi guration Cards
Confi gures a CPU board for the type of printer in which it is installed, see
Chapter 15.8, or changes the printer's EasyLAN setup.
Chapter 15 — CPU Board
149