Epson TM-U950 Technical Manual

Rev. A Troubleshooting 4-23
TM-U950/U950P Technical Manual
Major Part Replacements
Fuse replacement
Follow the steps below to replace a blown fuse:
1. Turn the printer off.
2. Disconnect the external power supply unit.
3. Perform Main Assembly 6 and 7 in Chapter 5 in reverse.
4. Replace the blown fuse (125 V, 3.15 AT).
5. Perform steps (1) through (3) in reverse.
If the printer still does not operate properly, or if the fuse blows again, use the flowchart in
Chapter 4 to check for other problems.
Print Head Unit Replacement
Follow the steps below to replace the print head unit:
1. Turn the printer off.
2. Disconnect the external power supply unit.
3. Disassemble the printer following the procedure described in Replacing the Print Head Unit
in Chapter 5.
4. Replace the print head unit.
5. Perform gap adjustment referring to page 5-58.
6. Perform steps (1) through (3) in reverse.
Cutter Blade Replacement
Follow the steps below to replace the cutter blade:
1. Turn the printer off.
2. Disconnect the external power supply unit.
3. Disassemble the printer following the procedure described in Replacing the Cutter Blade in
Chapter 5.
4. Replace the cutter blade. (Make sure the cutter blade is only one leaf.)
5. Perform steps (1) through (3) in reverse.
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