Epson TM-U950 Technical Manual

vi Rev. A
Chapter 3 Handling and Maintenance
Handling .....................................................................................................................................................................................3-1
Handling Precautions .......................................................................................................................................................3-1
Loading the Paper Rolls ...................................................................................................................................................3-2
Removing the Paper Rolls ................................................................................................................................................3-4
Inserting Slip Paper and Printing on Slip Paper ...........................................................................................................3-5
Printing on Personal Checks (only on printers with a MICR reader) (not available for the TM-U950P) ............3-6
Installing and Removing the Ribbon Cassette ..............................................................................................................3-8
Inserting the Stamp Set .....................................................................................................................................................3-9
Mounting the Power Switch Cover ................................................................................................................................3-10
Journal Lock Key Handling .............................................................................................................................................3-10
Removing the Jammed Paper ..........................................................................................................................................3-10
Maintenance ...............................................................................................................................................................................3-13
Periodic Checks .................................................................................................................................................................3-13
Cleaning ..............................................................................................................................................................................3-13
Lubrication .........................................................................................................................................................................3-14
Tool List ..............................................................................................................................................................................3-17
Measuring Equipment List ..............................................................................................................................................3-18
Lubricant List .....................................................................................................................................................................3-18
Chapter 4 Troubleshooting
Troubleshooting ........................................................................................................................................................................4-1
Self-test ................................................................................................................................................................................4-1
Troubleshooting Flowchart ..............................................................................................................................................4-4
Troubleshooting Tables ....................................................................................................................................................4-12
Major Part Replacements .........................................................................................................................................................4-23
Fuse replacement ...............................................................................................................................................................4-23
Print Head Unit Replacement .........................................................................................................................................4-23
Cutter Blade Replacement ................................................................................................................................................4-23
Error Types And Countermeasures ........................................................................................................................................4-24
Chapter 5 Disassembly, Assembly, and Adjustment
Small Part Specifications ..........................................................................................................................................................5-1
Actual Size E-type Retaining Rings ................................................................................................................................5-1
Disassembly ...............................................................................................................................................................................5-2
Replacing the Print Head Unit ........................................................................................................................................5-3
Replacing the Cutter Blade ..............................................................................................................................................5-5
Printer Mechanism Unit Assembly .........................................................................................................................................5-6
Sub-assembly A: Detector-Paper Assembly...................................................................................................................5-7
Sub-assembly B: Paper Guide-Upper Unit Assembly .................................................................................................5-8
Sub-assembly C: Paper Guide-Lower Unit Assembly..................................................................................................5-10
Sub-assembly D: Cutter Motor Mount Plate Assembly ...............................................................................................5-12
Sub-assembly E: Roller-Paper Hold Assembly..............................................................................................................5-12
Sub-assembly F: Cutter Frame Assembly.......................................................................................................................5-13
Sub-assembly G: Detector-Slip Ejection Assembly .......................................................................................................5-13
Sub-assembly H: Auto-cutter Unit Assembly ...............................................................................................................5-14
Sub-assembly I: Pulley Base-Carriage Transmission Assembly .................................................................................5-17
Sub-assembly J: Carriage-Head Assembly ....................................................................................................................5-17
Sub-assembly K: Assembling the MICR Head Holder Assembly (for printers with a MICR reader) .................5-18
Sub-assembly L-(1): Frame-Carriage Unit Assembly (for printers without a MICR reader) .................................5-22
Sub-assembly L-(2): Frame Carriage Unit Assembly (for printers with a MICR reader)........................................5-27
Sub-assembly M: Frame-Inner Assembly.......................................................................................................................5-35
Sub-assembly N: Detector-Slip Insertion Assembly .....................................................................................................5-36
Sub-assembly O: Solenoid J/S Changeover Assembly.................................................................................................5-36
Sub-assembly P: Paper Guide-Slip-Lower Assembly...................................................................................................5-37
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