Intermec EasyCoder 501 XP Service Manual page 100

15.4 Special Devices,
cont.
CAUTION!
The Electronic Key Circuit (P34) contains
an integrated lithium battery.
Replace only with original
Electronic Key Circuits from Intermec.
Dispose of used Electronic Key Circuits
according to local regulations for lithium
batteries.
Intermec EasyCoder 501 XP – Service Manual Ed. 4
Electronic Key Interface (P33)
The printer is prepared to use up to three different electronic keys.
In addition to the electronic key fi tted in P34 on the CPU board
(see Chapter 15.2), one or two keys can be inserted through a slot
in the printer's rear plate and thus be connected to P33 on the CPU
board.
The electronic keys are Dallas touch memory circuits with built-in
battery backup that can be programmed to add or lock out func-
tionality in the printer or the installed software. The expected life
of the backup battery is at least 10 years.
There are a number of different types of keys with different proper-
ties. Some have a non-volatile memory, which can be read from or
written to, some have a run-time clock with expiration capabilities,
while others have special password-protected memory areas.
A key may contain up to 16 different key items. There are two
types of functions:
• Lock, which locks or unlocks specifi ed features in the printer or
in the software. For example, a key may be required to unlock
a custom-made application program (copy-protection). If com-
bined with a run-time clock, it could for example allow use of
a demo program for a limited period of time.
• Storage, which is used to store short fi les of data.
Electronic keys for various purposes can be ordered from Inter-
mec.
Chapter 15 CPU Board
Electronic Key
99