TechNote 48U-009

4800, 4900 Series

4800 Series ST: TTMI ERROR
08-01-95 Ed Palmer

Models: 48XX, 49XX

Summary:
PROBLEM: The display shows ST: TTMI ERROR.

Resolution:


The 'St: TTMI error' message in the display indicates the TTMI board 
sent out an error message to the TTLB.  Causes include the printer shuttle 
mechanism is not shuttling or shuttling at an improper frequency, a failure of 
the TTMI board, or a failure of the TTLB board.  Possible causes of this problem 
include:


* NEW INSTALL
New printers are protected by placing a sheet of paper in the throat and 
closing the print gap to minimum.  Open the print gap, remove the packing paper, 
and install regular paper.

* PAPER JAM
Open print gap adjust knob to the load position, remove all paper, and visually 
check throat area for a paper jam. If  labels were printed, check for stuck labels.
Correct any paper jams and reset the print gap adjust to normal setting.

* SPSC BOARD - Power Supply [4C0161G01]
Remove the rear access panel, turn the printer on, and inspect that the green LED 
is lit. This verifies all power supply voltages are present. If the red LED is lit, 
a problem in the power supply may be at fault.

Specifications subject to change without notice.
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