Epson TM-U950 Technical Manual

4-12 Troubleshooting Rev. A
Troubleshooting Tables
If a problem that can be verified by visual examination has occurred, use the tables below to
determine the cause and perform repairs.
There are three tables, divided by symptom category:
Table 4-1 Initialization Problems
Table 4-2 Printing Quality Problems
Table 4-3 Printer Mechanism Problems
The tables contain the following columns:
Problem
This is the symptom that can be verified.
Probable Cause
This is a listing of one or several possible causes that should be examined.
Level
Level A
The problem can be corrected by persons who are familiar with the printer and have general
knowledge, but special technical skills are not required.
Level B
The problem requires thorough knowledge and familiarity with the printer that should be
checked.
Checkpoint
These are one or more areas in the printer that should be checked.
Action
These are the steps to correct the problem. If the problem persists after taking these steps, check
the other possible causes listed
CONFIDENTIAL

Epson TM-U950 Specifications

General

Print speed	18.6 ips
Character size	1.3 x 3.1 mm
Print technology	Dot matrix
Paper dimensions	210 x 297 mm
Dimensions (WxDxH)	251 x 298 x 194.5 mm
Electromagnetic compatibility	VCCI, FCC, CE
Safety	UL, CSA
Country of origin	China
Mean time between failures (MTBF)	180000 h
Serial interface	Yes
Standard interfaces	RS-232C
Weight (imperial)	12.3 lbs
Pallet width	1200 mm
Pallet height	1000 mm
Pallet length (UK)	2250 mm
Quantity per pallet	24 pc(s)
Quantity per pallet (UK)	36 pc(s)
Quantity per pallet layer	4 pc(s)
Harmonized System (HS) code	84433210
Quantity per pallet layer (UK)	6 pc(s)
Package depth	425 mm
Package width	360 mm
Package height	330 mm
Package weight	7196 g
Quantity per pack	1 pc(s)

Weight and Dimensions

Depth	298 mm
Width	186 mm
Height	195 mm