UBI EasyCoder 501 – Service Manual
113
IC-100 – 101 UBI Fingerprint EPROMs
These two EPROM packages are alike for all EasyCoder models
and always contain:
• The UBI Fingerprint firmware
• Default setup values
• Standard bar code generators
• UPC/EAN bar code interpretation fonts
• Standard fonts
SW030RSN.1
and
SW030RSN.2
• Setup options for direct thermal paper and transfer ribbons
• Utility programs
MKAUTO.PRG
and
FILELIST.PRG
•
UBI.1
image
IC-102 – 103 Configuration EPROMs
These two EPROM packages may vary between models and
applications and contain either a standard set of files and fonts, e.g.
UBI Shell, or a customized set of program files, setup files, fonts,
images, paper setup options etc.
IC-104 – 105 ROM-Expansion EPROMs (optional)
Two additional EPROMs can be fitted in order to further expand the
ROM memory, e.g. with additional bar codes or with a “Scalable
Fonts Kit”, see chapter 15.
IC-105 – 109 RAM Memory
In these sockets either two or four SRAM packages, containing the
printer’s working and storage memory, can be fitted. The SRAM
packages must have an access time of max. 120 ns and be fitted in
couples (first couple on IC-106 and IC-107, second on IC-108 and
IC-109).
All SRAM packages must be of the same type and size:
• 2
×
128 kbyte (2
×
1 Mbit) = Total of 256 kbyte (2 Mbit)
• 4
×
128 kbyte (4
×
1 Mbit) = Total of 512 kbyte (4 Mbit)
• 2
×
512 kbyte (2
×
4 Mbit) = Total of 1.024 kbyte (8 Mbit)
• 4
×
512 kbyte (4
×
4 Mbit) = Total of 2.048 kbyte (16 Mbit)
The size of the SRAMs is automatically defined by the printer.
The RAM memory is battery backed-up to avoid loss of data when
the printer is turned off or if the power fails. The NiCd-accumulator
is automatically recharged when the power is on. After having
installed the printer or replaced the CPU-board, leave the power on
overnight to allow the battery to become fully recharged. If the
printer is kept turned on less than full working hours, it is recom-
mended to leave the power on overnight at least once a week.
Continued!
17. CPU BOARD, cont'd.
17.3
Circuits and Straps, cont'd.
Note:
Before changing a set of Configuration
EPROMs containing a startup file (e.g.
UBI Shell), kill any corresponding
autoexec file in the RAM memory by the
following UBI Fingerprint instruction:
KILL "RAM: AUTOEXEC.BAT"
WARNING!
If a RAM package is fitted upside
down, the recharging of the CPU
board's battery backup could be
damaged (see chapter 26.2). This will
eventually cause memory loss.
The semicircular “front” marking of
each package should face upward as
seen when the CPU board is fitted
in the printer.
