Programmer's Guide
PcOS Series 90PLUS
Product Self Tests
11/07/05
Rev Q
Page 115
8.
The burn-in test is used as part of the production process to assure that the printer functions correctly
and provides an initial burn-in.
7.2.2
Hex Dump Mode
Pressing and holding the RESUME and RELEASE keys at power up places the unit in hex dump mode.
This mode is used to diagnose communication problems with the printer. As information is received by the
printer, it is converted to a HEX/ASCII format and printed. No translation is made, which means no
commands are interpreted. All information is converted to HEX/ASCII and printed on the receipt tape. If a
carriage return is sent to the printer, it will be translated to 0D in the HEX field and "." in the ASCII field.
The format is as follows:
54 68 69 73 20 69 73 20
This is
61 20 74 65 73 74 0D 0A
a test..
There are several indications of printer and host communication problems that can be deduced from this
test. If the printer is printing all 40 "@" symbols, the parity or the number of bits is wrong. If the printer is
printing some Hex 40 "@" signs when it should be printing other characters, either the parity, baud rate, or
bit length setting is wrong. If the printer prints incorrect characters (like Hex C1 instead of Hex 41 "A"), it
is set for 8-bit data, and the host is set for 7-bit. In most cases, the print problem can be traced to the host
and the printer not being configured in the same way.
7.2.3
Configuration Mode
7.2.3.1
Initial Power On
The initial power cycle of a Series 90PLUS diagnostic will find that the EEPROM is not valid. Staying
in Level 0 diagnostics for about ten seconds will indicate this. During this time, the EEPROM is
initialized, and a default configuration is loaded. The default will allow manual or remote
configuration. It is unlikely to be the desired configuration.
7.2.3.2
Manual Configuration
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Pressing and holding the FEED and RESUME keys at power up enters manual configuration mode. (As
soon as the printer starts to print, the keys should be released). The printer will print the software
revision information and instructions for using manual configuration mode.
The RESUME key will select the next group.
The RELEASE key will select the next item.
The RELEASE and RESUME keys together will select the next option.
The RESUME and FEED keys together will print a list of all settings.
The FEED key will feed paper.
Once in configuration mode, the item to be changed should be selected with the RELEASE and
RESUME keys. The item is changed when the RESUME and RELEASE keys are pressed together. It
should be noted that in test mode, keys operate when they are released and not when they are pressed.
This allows for multiple key depressions to be recognized.
13
Manual configuration may be locked by remote configuration. If this is the case, the only way to alter the
configuration is by remote CFG90 configuration.
Summary of Contents for Ithaca 90PLUS Series
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