Texas Instruments 880 User Manual page 43

Table 4-1. Error Codes
Status Code Explanation/Action
02
Font ROM
Fault
03
Nonvolatile
RAM Fault
04
UART Fault
05
Expansion
RAM I Fault
06
Communication
Controller Fault
08
Expansion
RAM II Fault
11*
Carriage
Fault
12*
Paper
Out
23
Input Buffer
Overflow
Error in a font ROM. Compare ROMs in status report with option configuration label under
printhead door. Faulty ROMs do not appear in status report. Printer works but will not use
faulty font ROM.
ACTION: Cycle power. If problem persists, call service representative.
Error in RAM that stores printer configuration. Cause may be battery failure, electrostatic dis-
charge, or hardware failure. Printer configuration returns to default values.
ACTION: Reconfigure printer and cycle power. If problem persists, call service representative.
Error in UART used by serial interface. Parallel interface not affected.
ACTION: Cycle power. If problem persists, call service representative.
Error detected in RAM used for 4K expansion buffer. Standard buffer not affected.
ACTION: Cycle power. If problem persists, call service representative.
Error detected in the optional communication controller. Standard serial and parallel inter-
faces not affected. Printer configuration returns to default values.
ACTION: Cycle power and reconfigure printer. If problem persists, call service representative.
Error in RAM used for 16K expansion buffer. Standard buffer not affected.
ACTION: Cycle power. If problem persists, call service representative.
Error indicator blinks rapidly. Something preventing carriage motion. If printhead has
snagged the paper, printhead may be too close to paper.
ACTION: Clear obstructions and adjust printhead if necessary. Press Reset key. If problem
persists, call service representative.
Paper Out indicator will blink slowly. The printer is out of paper.
ACTION: Reload paper and press Reset key.
Host sent data after printer indicated it was busy.
ACTION: Verify that printer is configured to indicate busy the way host expects. (See config-
uration codes 13 - 18.) Verify that cable makes correct connections to host. Press Reset key.
*Error code will not print, but is transmitted in the transmitted status report.
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