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CONFIDENTIAL TM-U950/U950P
Technical Manual
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Technical manual
TM-U950/TM-U950P
Copied Date Copied by 199 , ,
English
4005789
CONFIDENTIAL
EPSON
SEIKO EPSON CORPORATION Printed in Japan E96010130-0000SE
Confidential
CONFIDENTIALITY AGREEMENT
BY USING THIS DOCUMENT, YOU AGREE TO ABIDE BY THE TERMS OF THIS AGREEMENT. PLEASE RETURN THIS DOCUMENT IMMEDIATELY IF YOU DO NOT AGREE TO THESE TERMS.
1. This document contains confidential, proprietary information of Seiko Epson Corporation or its affiliates. You must keep such information confidential. If the user is a business entity or organization, you must limit disclosure to those of your employees, agents and contractors who have a need to know and who are also bound by obligations of confidentiality. 2. On the earlier of (a) termination of your relationship with Seiko Epson, or (b) Seiko Epson's request, you must stop using the confidential information. You must then return or destroy the information, as directed by Seiko Epson. 3. If a court, arbitrator, government agency or the like orders you to disclose any confidential information, you must immediately notify Seiko Epson. You agree to give Seiko Epson reasonable cooperation and assistance in resisting disclosure. 4. You may use confidential information only for the purpose of operating or servicing the products to which the document relates, unless you obtain the prior written consent of Seiko Epson for some other use. 5. Seiko Epson warrants that it has the right to disclose the confidential information. SEIKO EPSON MAKES NO OTHER WARRANTIES CONCERNING THE CONFIDENTIAL INFORMATION OR ANY OTHER INFORMATION IN THE DOCUMENT, INCLUDING (WITHOUT LIMITATION) ANY WARRANTY OF TITLE OR NON-INFRINGEMENT. Seiko Epson has no liability for loss or damage arising from or relating to your use of or reliance on the information on the document. 6. You may not reproduce, store or transmit the confidential information in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of Seiko Epson. 7. Your obligations under this Agreement are in addition to any other legal obligations. Seiko Epson does not waive any right under this Agreement by failing to exercise it. The laws of Japan apply to this Agreement.
CONFIDENTIAL
TM-U950/TM-U950P Technical Manual
FCC CLASS A
FCC Compliance Statement
For American Users
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense.
WARNING
The connection of a non-shielded printer interface cable to this printer will invalidate the FCC Verification of this device and may cause interference levels which exceed the limits established by the FCC for this equipment. You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.
FOR CANADIAN USERS
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications. Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de Class A prescrites dans le règlement sur le brouillage radioélectrique édicté par le Ministère des Communications du Canada.
GEREÄUSCHPEGEL
Gemäß der Dritten Verordrung zum Gerätesicherheitsgecsetz (Maschinenlärminformations- Verordnung-3. GSGV) ist der arbeitsplatzbezogene Geräusch-Emissionswert kleiner als 70 dB(A) (basierend auf ISO 7779).
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Introduction
The TM-U950 printer is an ESC/POS® compatible high-performance point of sale (POS) printer which can handle receipt, journal, and slip paper. There are two models: the TM-U950 and the TM-U950P. The TM-U950P has a parallel interface. Differences between the two models are noted throughout this manual. The main features of the TM-U950 and TM-U950P printers are the following: t Usable with a wide range of slip paper types. t Non-protruding interface connectors integrated in the body of the printer. t Bidirectional logic seek for high throughput. t Paper feed pitch of 1/144 inch. t Integrated printer buffer with 32 byte or 2 KB capacity. t Slip paper eject sensor. t ASB (Automatic Status Back) function to send the printer status automatically. t EPSON intelligent module connection (Not available on the TM-U950P). t EPSON customer display series connection (Not available on the TM-U950P). t Optional Magnetic Ink Character Recognition (MICR) reader that enables the printer to perform consecutive reading and processing of MICR characters and printing endorsements (not available for the TM-U950P).
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TM-U950/TM-U950P Technical Manual
About This Manual
t Chapter 1 provides general specifications and hardware configuration information. t Chapter 2 provides general operating principles and printer mechanism configuration information. t Chapter 3 provides handling and maintenance information. t Chapter 4 provides troubleshooting information. t Chapter 5 provides printer disassembly, assembly, and adjustment instructions. t Chapter 6 (Appendix) provides circuit board and exploded diagrams.
Notes and Cautions
Note: Notes have important information and useful tips on the operation of your printer.
CAUTION:
Cautions must be observed to avoid damage to your equipment.
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Revision Sheet
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TM-U950/TM-U950P Technical Manual
Contents
Chapter 1 Features and General Specifications
Features ...................................................................................................................................................................................... 1-1 General Specifications .............................................................................................................................................................. 1-3 Printing Specifications ...................................................................................................................................................... 1-3 Character Specifications .................................................................................................................................................. 1-4 Paper Specifications ......................................................................................................................................................... 1-5 Paper Roll Feed Mechanism ............................................................................................................................................ 1-9 Journal Paper Take-up Mechanism ................................................................................................................................ 1-9 Auto-cutter ........................................................................................................................................................................ 1-9 Electrical Specifications .................................................................................................................................................... 1-9 Stamp .................................................................................................................................................................................. 1-10 Ink Ribbon ......................................................................................................................................................................... 1-10 Dimensions, Weight, Finish ............................................................................................................................................ 1-11 Environmental Specifications ......................................................................................................................................... 1-11 Reliability ........................................................................................................................................................................... 1-12 Hardware Configuration ......................................................................................................................................................... 1-13 Main Unit Configuration ................................................................................................................................................. 1-13 Main Unit Specifications .................................................................................................................................................. 1-14 Connectors ......................................................................................................................................................................... 1-17 Interface .............................................................................................................................................................................. 1-19 Switches and Buttons ....................................................................................................................................................... 1-27 Functions .................................................................................................................................................................................... 1-31 Error Processing ................................................................................................................................................................ 1-31 Self-test ............................................................................................................................................................................... 1-32 Hexadecimal Dumping .................................................................................................................................................... 1-32 Printing Operation ............................................................................................................................................................ 1-33 Options ....................................................................................................................................................................................... 1-34 AC Adapter (PS-150) ........................................................................................................................................................ 1-34 Journal Lock ...................................................................................................................................................................... 1-34
Chapter 2 Mechanism Configuration and Operating Principles
Printer Mechanism Components ............................................................................................................................................ 2-1 Printer Mechanism Operating Principles .............................................................................................................................. 2-2 Printing Assembly ............................................................................................................................................................. 2-2 Sensor Assemblies ............................................................................................................................................................. 2-4 Paper Feed Assembly ....................................................................................................................................................... 2-9 Slip Paper Assembly ........................................................................................................................................................ 2-12 MICR Reader Assembly (for printers with a MICR reader) (not available for the TM-U950P) ........................... 2-16 Ribbon Feed Assembly .................................................................................................................................................... 2-18 Stamp Assembly (for printers with a stamp assembly) .............................................................................................. 2-19 Auto-cutter Assembly ...................................................................................................................................................... 2-20 Paper Roll Take-up Assembly ........................................................................................................................................ 2-23 Electrical Circuitry Operating Principles .............................................................................................................................. 2-25 Hardware Configuration ................................................................................................................................................. 2-25 Main Board Operating Principle .................................................................................................................................... 2-30 MICR Board Operating Principle (on printers with a MICR reader) (not available for the TM-U950P) ............ 2-49
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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
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Sub-assembly Q: Frame-Paper Take-up Assembly ...................................................................................................... 5-38 Sub-assembly R: Assembling the motor-paper guide-J assembly (for printers with a MICR reader).................. 5-39 Main Assembly (Part 1) ................................................................................................................................................... 5-40 Adjustments ...................................................................................................................................................................... 5-53 Main Assembly (Part 2) ................................................................................................................................................... 5-59 Whole Unit Assembly .............................................................................................................................................................. 5-65 Sub-assembly A: N.E. Detector-J Assembly and N.E. Detector-R Assembly ........................................................... 5-65 Sub-assembly B: Holder-Switch Circuit Board Assembly .......................................................................................... 5-67 Sub-assembly C: Journal Lock and Cover-Paper Take-up Assembly (Option) ...................................................... 5-68 Sub-assembly D: Cover Paper Take-up ......................................................................................................................... 5-69 Main Assembly ......................................................................................................................................................................... 5-70 Main Assembly 1: Main Circuit Board, P-ROM, and Plate-Main Mounting ........................................................... 5-70 Main Assembly 2: FFC, Power Cable, and Plate-Circuit Board Attachment ........................................................... 5-71 Main Assembly 3: Printer Mechanism Assembly Attachment on Plate-Main ........................................................ 5-72 Main Assembly 4: N.E. Detector-R and -J Assemblies Attachment .......................................................................... 5-73 Main Assembly 5: Printer Mechanism Assembly Attachment on Case-Lower Assembly .................................... 5-75 Main Assembly 6: Case-Upper Assembly Mounting .................................................................................................. 5-76 Main Assembly 7: Cover-Face and Cover-Main Assembly Attachment .................................................................. 5-77 Main Assembly 8: Cover-ROM Attachment ................................................................................................................. 5-78 Adjustments .............................................................................................................................................................................. 5-79 Adjustment G: Adjusting the Paper Roll Near-end Detector Location .................................................................... 5-79 Adjustment H: Detector-Slip Insertion Assembly Threshold Value Adjustment.................................................... 5-81 Adjustment I: MICR mechanism check.......................................................................................................................... 5-83
Chapter 6 Appendix
Electrical Circuit Drawings ...................................................................................................................................................... 6-1 Circuit 1.............................................................................................................................................................................. 6-2 Circuit 2.............................................................................................................................................................................. 6-3 Circuit 3.............................................................................................................................................................................. 6-4 Circuit 4.............................................................................................................................................................................. 6-5 Circuit 5.............................................................................................................................................................................. 6-6 Circuit 6.............................................................................................................................................................................. 6-7 Circuit 7.............................................................................................................................................................................. 6-7 Circuit 8.............................................................................................................................................................................. 6-8 Main Unit Circuit Drawing for TM-U950..................................................................................................................... 6-9 Main Unit Circuit Drawing for TM-U950P .................................................................................................................. 6-10 MICR Board (for printers with a MICR reader) (Not available for the TM-U950P) .............................................. 6-11 Parallel Interface Circuit Board Diagram ..................................................................................................................... 6-12 Main Circuit Board Parts Layout for TM-U950 ........................................................................................................... 6-13 Main Circuit Board Parts Layout for TM-U950P......................................................................................................... 6-14 Parallel Interace Circuit Board Parts Layout................................................................................................................ 6-15 Overall Exploded Diagrams ........................................................................................................................................... 6-16 Lubrication Points Diagram for Printers Without a MICR Reader (1/3) ................................................................ 6-26 Lubrication Points Diagram for Printers Without a MICR Reader (2/3) ................................................................ 6-27 Lubrication Points Diagram for Printers Without a MICR Reader (3/3) ................................................................ 6-28 Lubrication Points Diagram for Printers With a MICR Reader (1/4) ...................................................................... 6-29 Lubrication Points Diagram for Printers With a MICR Reader (2/4) ...................................................................... 6-30 Lubrication Points Diagram for Printers With a MICR Reader (3/4) ...................................................................... 6-31 Lubrication Points Diagram for Printers With a MICR Reader (4/4) ...................................................................... 6-32
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TM-U950/U950P Technical Manual
Chapter 1
Features and General Specifications
Features
The TM-U950 printer is an ESC/POSTM compatible high-performance point of sale (POS) printer which can handle receipt, journal, and slip paper. There are two models: the TM-U950 and the TM-U950P. The TM-U950P has a parallel interface. Differences between the two models are noted throughout this manual. The main features of the TM-U950 and TM-U950P printers are the following: t Usable with a wide range of slip paper types. t Non-protruding interface connectors integrated in the body of the printer. t Bidirectional logic seek for high throughput. t Paper feed pitch of 1/144 inch. t Integrated printer buffer with 32 byte or 2 KB capacity. t Slip paper eject sensor. t ASB (Automatic Status Back) function to send the printer status automatically. t EPSON intelligent module connection (Not available on the TM-U950P). t EPSON customer display series connection (Not available on the TM-U950P). t Optional Magnetic Ink Character Recognition (MICR) reader that enables the printer to perform consecutive reading and processing of MICR characters and printing endorsements (not available for the TM-U950P).
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Figure 1-1. TM-U950 Appearance
1-2 Features and General Specifications
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TM-U950/U950P Technical Manual
General Specifications
Printing Specifications
Operation principle
Serial impact dot-matrix printer
Print head wire layout
Serial 9-pin
Dot pitch
0.353 mm (1/72")
Dot wire diameter
0.29 mm (.01")
Figure 1-2. Dot Configuration
Print direction
Bidirectional logic seek
Print width (printable area)
Paper roll: 61.1 mm (2.41") Slip paper: 135.6 mm (5.34")
Paper feed pitch
4.233 mm (1/6") (default setting) adjustable (by commands) in 1/144-inch steps
Paper feed principle
Friction feed
Paper feed rate
Approx. 3.4 IPS (continuous paper); 60.3 ms per line (1/6-inch paper feed)
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Printing format
See CPI in Table 1-2.
Character spacing
See Table 1-2.
Total dot count
70 mm paper roll (2.76"): Slip paper: 180 dots (360 positions) per line 400 dots (800 positions) per line
Printing speed
See Table 1-2. As shown in the table below, the TM-U950 has three printing modes, which differ in printing speed and head power time (impact).
Table 1-1. Printing Operation Mode
Operation mode Standard Copy Low-speed Printing speed High Low Low Head power time (impact) Standard Copy Standard
Character Specifications
Character set
Alphanumeric: International: Extended graphics: 95 32 128 x 8 pages
Character matrix
(Alphanumeric, international, extended graphics) 7 x 9 (spacing: 2 half-dots) 0 x 9 (spacing: 3 half-dots) Larger spacing can be set by using ESC SP.
Table 1-2. CPI, CPS, CPL, Character Size
CG Mode (Horizontal dots x vertical dots) 9x9 7x9 Character Spacing (half dots) Characters Per Inch (CPI) Characters Per Second (CPS) (Carriage moving speed) High speed 3 dots 2 dots 12.5 16.7 233 311 Low speed 200 267 Characters Per Line (CPL) Character Size Width x Height
Paper roll 30 40
Slip paper 66 88 1.6 mm x 3.1 mm (0.6" x .12") 1.3 mm x 3.1 mm (0.5" x .12")
1-4 Features and General Specifications
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Figure 1-3. Character Size
Paper Specifications
Paper type
t Paper roll Wood-free paper (single layer only) t Slip paper Plain paper Carbon copy paper Pressure-sensitive paper
Paper dimensions
t Paper roll Paper width: Maximum diameter: Paper thickness: Paper weight: 69.5 + 0.5 mm (2.74 + 0.02") 83 mm (3.27") 0.06 to 0.09 mm (.002 to .004") 52.3 to 64 g/m 2 (13.9 to 171 lbs) (45 to 55 kg/1000 sheets; 788 x 1091 mm) (20.41 to 24.94 lbs/1000 sheets; 31.02 x 42.95") 10 mm (0.39") or more
Core diameter:
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t Slip paper Dimensions: Thickness: 70 x 70 to 210 x 297 mm (W x H) (2.76 x 2.76 to 8.27 x 11.69") 0.09 to 0.36 mm (.004 to .014")
Temperature and copying capability
As copying capability is influenced by the ambient temperature, printing must be performed under the conditions described in Table 1-3.
Table 1-3. Relationship Between Ambient Temperature and Number of Copies
Number of Copies Original + 4 copies Original + 1 to 3 copies Ambient Temperature approx. 20° to 40°C (68° to 104°F) 5° to 40°C (41° to 104°F)
Paper thickness and copying capability
t Plain paper (single sheet): 0.09 to 0.2 mm (.0035 to .0079")
t Carbon copy paper (original + 4 copies) Backing paper Copy paper and original paper Carbon paper Total thickness 0.06 to 0.15 mm (.002 to .006") 0.04 to 0.07 mm (.0016 to .003") Approx. 0.035 mm (.001") 0.30 mm (.012") or less (1 to 1 + 3) 0.36 mm (.014") or less (1 + 4)
t Pressure-sensitive paper (original + 4 copies) Backing paper Copy paper and original paper Total thickness 0.06 to 0.15 mm (.002 to .006") 0.06 to 0.075 mm (.002 to .003") 0.24 mm (.009") or less (1 to 1 + 3) 0.30 mm (.012") or less (1 + 4)
Note: When using multi-ply paper that consists of an original and three copies, be sure to print with a 9 x 9 font. If a 7 x 9 font is used, some characters on some of the copies may not be readable.
Check paper (only when the printer is used with the MICR reader)
Paper type: Total thickness: Normal paper 0.09 to 0.2 mm (.0035 to .0079")
1-6 Features and General Specifications
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TM-U950/U950P Technical Manual Size: Weight: 68 to 102 mm x 152 to 210 mm (2.68 to 4.02" x 2.98 to 8.27") 70 to 90 kg paper
Notes on setting the print operation mode
t The GS E command sets print mode (printing speed and print head energizing time). t When the power is turned on, normal mode is selected as the default. The printer automatically switches from normal mode to copy mode when slip is selected by ESC c 0.
Notes on slip paper
t The slip paper must be flat, without curls or wrinkles, especially at the top edges. Otherwise, the paper may rub against the ribbon and become dirty. t There must be no glue on the bottom edge of slip paper. It is desirable for the glue to be on the top edge. Choose slip paper carefully when the glue is on the right or left edge, since paper feeding and insertion are affected by gluing conditions (e.g., glue quality, method, and length) and glue location (see Figure 1-4). Be especially careful when slip paper is wide and has the glue on the right or left edge, since meandering may occur. t Since the slip insertion sensor uses a photo sensor, paper that has holes at the sensor position, or is translucent, must not be used (see Figure 1-5). t Since the slip ejection sensor uses a reflective photo sensor, paper that has holes or dark portions with low reflection (less than 40% reflection) at the sensor position must not be used (see Figure 1-6). t Be sure to perform slip printing with a paper roll loaded to avoid incorrect paper feeding due to paper jams. t Use thinner paper (N30 or equivalent) between the top and bottom sheets of multi-ply paper. If thick paper is used, the copy capability is lowered.
Notes on using personal check paper (for printers with an MICR reader)
t The personal checks must be flat, without curls, folds, or wrinkles (especially at the edges). Otherwise, the check may rub against the ribbon and become ink-stained.
Figure 1-4. Slip Paper Glued Area
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Figure 1-5. Slip Insertion Sensor Position
Figure 1-6. Paper Holes and Low Reflection Prohibited Area
Print area
t Paper roll
Figure 1-7. Paper Roll Print Area
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TM-U950/U950P Technical Manual t Slip paper
Figure 1-8. Slip Paper Print Area
*Note When the printer uses an MICR reader, this width is 5.0mm (0.20").
Paper Roll Feed Mechanism
Feed principle
Drop-in loading
Paper roll near-end detection
Separate sensors for receipt paper and journal paper.
Journal Paper Take-up Mechanism
Automatic take-up by journal paper feed motor.
Auto-cutter
Auto-cutter is installed only on receipt side, for full and partial cuts.
Electrical Specifications
Printer operation voltage (using supplied AC adapter)
+24 V DC ± 10% Ripple voltage: 300 mVpp or less (only when the printer is used with the MICR reader)
Current consumption
t During printing Average approx. 1.8 A (R/J, - N, 40-character printing) Peak approx. 8 A t During slip paper feed to printing position: Average approx. 0.3 A (for approx. 1.4s)
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t During standby Average approx. 0.3 A t Operating MICR reader (when the printer used with the MICR reader) Mean - approximately 2.3 A (Approximately 1.4 seconds)
Stamp
Stamp mechanism is available as a factory option for the receipt side. Recommended stamp: Recommended ink: Print area: Fuji Copian CSP-2042C Fuji Copian Super Ink 42 x 20 mm (1.65 x 0.79") (W x H)
Dimensions of stamp pad: See Figure 1-9. Dimensions of stamp set: See Figure 1-10.
[Unit: mm]
Figure 1-9. Stamp Pad Dimensions
Figure 1-10. Stamp Set Dimensions
Ink Ribbon
Ribbon cassette
ERC-31 (P) ERC-31 (B)
Color
Purple: ERC-31 (P) Black: ERC-31 (B)
Ribbon life (18 dots per character)
7,000,000 characters 1-10 Features and General Specifications
Figure 1-11. Ribbon Cassette Dimensions
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Dimensions, Weight, Finish
Dimensions
251 x 298 x 194.5 mm (9.88 x 11.73 x 7.66") (W x D x H)
Weight
Approx. 5.6 kg (12.3 lbs)
Color
EPSON Standard Gray
Environmental Specifications
Temperature
Operation: Storage: 5° to 40°C (41° to 104°F) -10° to +50°C (14° to 122°F) (except ribbon)
Humidity
Operation: Storage: 30 to 80% (non-condensing; limit above 30°C: 30°C, 80%) 30 to 90% (non-condensing; except ribbon)
Vibration resistance (in standard EPSON packing)
Frequency: Acceleration: Sweep: Time: Directions: 5 to 55 Hz 2G 5 minutes (one way) 1h X, Y, Z
No visible external or internal problems or operation failure after the above vibration test.
Shock resistance (in standard EPSON packing)
t With packing Drop height: Angle: 50 cm (19.69") 1 angle, 3 surfaces, 6 sides
No visible external or internal problems or operation failure after the above drop test. t Without packing Drop height: Angle: 5 cm (1.97") 4 sides, one-point support
No damage when dropped while printer is off.
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Noise
63 dB (operating, measured in ANSI bystander position; printing on receipt and journal paper roll)
Reliability
Mechanics
MCBF Life expectancy 5,000,000 lines (auto-cutter and stamp once every 15 lines) 7,500,000 lines (The printer's life is considered over when the printer cannot function due to worn-out main parts such as motor, solenoids, frames, and shafts.) 150,000,000 characters (average 2 dot/wire/1 character)
Life expectancy of print head
MICR reader mechanism (only when the printer is used with the MICR reader):
MCBF: Life: 160,000 passes 240,000 passes 1 pass: reading characters to printing endorsements on a U.S. personal check (152 mm (5.98") long) The MICR reader is defined to have reached the end of its life when it cannot function properly because of wearing out of the main parts (magnetic head, head holding roller, etc).
Certifications
Japan: North America: EMI: VCCI Class 1 EMI: FCC Class 1 Safety standards: UL1950-2TH-D3 C-UL Europe: CE marking (printer with MICR reader under application) EN55022 EN50082-1 EN45501 (except when connected to IM) Safety standard: TÜV
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Hardware Configuration
Main Unit Configuration
Printer mechanism
Figure 1-12. TM-U950 Printer Mechanism Main Unit Configuration
Electrical circuit and unit on cases
Figure 1-13. TM-U950 Electrical Circuit and Unit on Cases Main Unit Configuration
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Main Unit Specifications
Paper feed motors
Receipt and journal paper feeding is performed by dedicated feed motors. Slip paper feeding is performed by using the journal paper feed motor and a journal/slip switching solenoid.
Motor type
4-phase, 48-pole PM type stepping motor
Drive voltage
24 V DC + 10% (including voltage drop caused by drive transistor)
Winding resistance
Journal paper feed motor Receipt paper feed motor: 35 ± 7% at 25°C (77°F), per phase 42 ± 7% at 25°C (77°F), per phase
Current consumption (per motor)
t Journal paper feed motor Peak current: Average current: Hold current t Receipt paper feed motor Peak current: Average current: Hold current: 1.5 A in worst case 510 mA at rated speed; 25°C (77°F), 24 V DC, 500 pps 770 mA max. in worst case Approx. 130 ± 50 mA per phase at normal hold, 25°C (77°F) 1.94A in worst case 615 mA at rated speed; 25°C (77°F), 24 V DC, 500 pps 930 mA max. in worst case 92.5+42.5 mA per phase at normal hold, 25°C (77°F)
Drive frequency
500 pps (minimum pulse interval 2.00 ms)
Drive principle
Constant voltage drive, 2-2 phase induction
Carriage motor Motor type
4-phase, 48-pole PM type stepping motor
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Drive voltage
24 V DC ± 10% (including voltage drop caused by drive transistor)
Winding resistance
9 ± 7% at 25°C (77°F), per phase
Current consumption (per motor)
Peak current: Average current: Hold current: 1.5 A in worst case 550 mA at rated speed 150 mA± 8% per phase
Drive frequency
Standard mode: Copy mode: 1400 pps (pulse interval 714 µs) 1200 pps (pulse interval 834 µs)
Drive principle
Constant-current chopper drive, 2-2 phase induction
Carriage feed pitch
0.3386 mm (1/75") per pulse
Print head unit (print solenoids)
Number of solenoids: Drive voltage: DC resistance: 9 24 V DC ± 10% (including voltage drop caused by drive transistor) 6.65 ± 4% at 25°C (77°F)
Near-end sensors (journal, receipt)
A sensor is provided for the receipt and journal paper roll respectively. The sensors check the diameter of each roll and activate the near-end alarm when the diameter falls below a userdetermined value. Sensor type: Voltage: Output level: Microswitch 5 V DC ± 5% Low when near-end is detected
Paper roll sensors (journal, receipt) (*)
A sensor is provided in the paper path (receipt and journal side, respectively) of the printer mechanism. These sensors check for the presence of paper, and accordingly control loading of the paper roll. Sensor type: Switch rating: Contact condition: Microswitch 10 to 100 mA, 5 V DC (resistive load) On when paper is present
(*) If the paper roll sensor detects the "no paper" condition while the cover is open, semiautomatic loading can be performed by inserting the paper roll into the paper path.
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Slip paper insert sensor
This sensor is located in the slip paper loading path to detect the insertion of slip paper. Sensor type: Voltage: Input current: Output level: Photosensor 5 V DC ± 5% Approx. 20 mA High when slip paper is detected
Slip paper eject sensor
This sensor is located in the slip paper eject path to detect ejection of slip paper. If ejection is not detected, the printer does not proceed to the next step. Sensor type: Voltage: Photosensor 5 V DC ± 5%
Cover open sensor (*)
This sensor detects the condition of the printer cover. If the cover is open, the printer automatically goes off-line after the current printing operation and the carriage returns to the home position at slow speed. The printer goes back on-line when the cover is closed. Sensor type: Voltage: Input current: Output level: Photosensor 5 V DC ± 5% 10 mA High when cover open is detected
(*) If the paper roll sensor detects the "no paper" condition while the cover is open, semiautomatic loading can be performed by inserting the paper roll into the paper path.
Auto-cutter sensor
Sensor type: Voltage: Current rating: Mechanical contact sensor 5 V DC ± 5% 0.1 to 0.5 mA
Home position sensor
This sensor detects the carriage initial position (on the receipt paper side) and the carriage abnormal operation. Sensor type: Voltage: Output level: Photosensor 5 V DC ± 5% High when the carriage home position is detected
Carriage sensor
This sensor outputs signal synchronized with the carriage operation, and detects whether the carriage operation is abnormal. Sensor type: Voltage: Output level: Photosensor 5 V DC ± 5% High when sensor plate is detected
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MICR Reader (when the printer is used with the MICR reader) (Not available for the TM-U950P)
Available fonts: Recognition rating: E-13B, CMC7 98% or more (at 25°C)
Recognition rating is defined as follows: Total number of checks - (number of sheets misread and those not identified) Recognition rating (%) = × 100 Total number of checks
Check paper used for test is EPSON standard check paper. Checks must be flat, without curls, folds, or wrinkles.
Connectors
All connectors are located on the rear panel of the printer. (Refer to Figure 1-1.)
Connector panels
14 25
1
8
1
1 13
6
2 3 1
Customer display (DM-D) connector
Interface connector
Drawer kickPower out connector connector
Interface connector
Drawer kickout connector
Power connector
TM-U950 Figure 1-14. Rear Panel Connectors
TM-U950P
Interface
See the Interface section in this chapter.
Power supply connector
This connector is for the AC adapter. Connector type: TCS7960-53-2010 (Hoshiden) or equivalent
Table 1-4. Power Supply Pin Assignment
Pin number 1 2 3 Shell Function 24 VDC Signal ground NC Frame ground
Note: Be sure to ground the printer via the frame ground terminal on the metal strip on the rear panel.
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Drawer kick-out connector (modular connector)
Pulse specified by ESC p command is output to this connector. The host can confirm the status of the input signal by using the DLE EOT, ESC u, GR r, or GS a (ASB) commands. Connector type: Printer side User side 52065-6615 (Molex) or equivalent 6-position 6-contact (RJ12 telephone jack)
Table 1-5. Drawer Kick-out Connector Pin Assignment
Pin number 1 2 3 4 5 6 Signal name Frame ground Drawer kick-out drive signal 1 (*1) Drawer open/close signal (*2) + 24 V Drawer kick-out drive signal 2 (*1) Signal ground I/O -- O I -- O --
(*1) Drawer kick-out drive signal
The signal specified by the ESC p command is output from pins 2 and 5 of the connector. Output voltage: Output current: Output waveform: Approx. 24 V 1 A max. The waveform of the signal at pins 2 and 5 is shown in Figure 1-15. (The ON time n1 and OFF time n2 are determined by the ESC p command.)
n1 x 10ms
n2 x 10ms
Figure 1-15. Drawer Kick-out Drive Signal Timing
(*2) Drawer open/close signal
The host computer can check the drawer open/close status with the DLE EOT, ESC u, GR r, or GS a (ASB) commands. Input signal level (connector pin 3) Low = 0 to 0.8 V High = 2 to 5 V
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TM-U950/U950P Technical Manual Notes t Use a shielded cable for the drawer connection. t It is not possible to drive two drawers at the same time. t Use a solenoid rated for at least 24 as the drawer kick-out solenoid. Otherwise, excessive current may damage the solenoid. t The drawer must be powered from the printer (connector pin 4). t Do not drive the drawer continuously.
Customer display connector (not supported on the TM-U950P)
This connector is for Epson customer display (DM-D series). Do not connect other customer displays. Connector type: Receptacle 52065-8845 (Molex) or equivalent
Table 1-6. Customer Display Connector Pin Assignment
Pin number 1 2 3 4 5 6 7 8 Signal name Frame ground NC TXD DTR DSR Signal ground +24V DC Power ground I/O -- -- O O I -- -- --
Interface
Serial interface
Data transfer principle Synchronization Handshake (*) Signal level MARK: -3 to -15 V (logical "1"/OFF) SPACE: +3 to +15 V (logical "0"/ON) (Voltage measured at connector, referenced to SG) Baud rate (*) Word length (*) 1200, 2400, 4800, 9600 bps 7 or 8 bit Serial (RS-232 interface) Asynchronous DTR/DSR or XON/XOFF
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Parity (*) Number of stop bits Connector type None, even, odd 1 or more D-SUB 25 female or equivalent
(*)Can be set with DIP switches on the bottom of the unit (See Tables 1-9 and 1-10.)
On-line/off-line switching
This printer has no on-line/off-line switch. It automatically goes off-line in the following cases: t During self-test. t When the cover is open. t When the paper feed button (receipt or journal/slip) is used to advance the paper. t When printing has stopped due to no paper ("no paper" condition selected with ESC c 4). t During the interval between power-on (including reset using the interface) and the end of the initialization sequence, until data can be received. t When an error has occurred t During the macro execution switch waiting status.
Table 1-7. Interface Connector Specifications and Functions
Pin number 1 2 3 4 Signal name FG TXD RXD RTS I/O -- O I O Function Frame ground Transmit data Receive data DIP SW1-6 off: Same as DTR signal (Pin20) DIP SW1-6 on: Logical product of DTR signals of DM-D and TM (if both are SPACE, the printer can receive data. Indicates whether the host is ready to receive data. SPACE indicates "ready," and MARK indicates "not ready." If DTR/DSR control is used, the printer checks this signal before sending data (except when sending data by GS ENG, DLE ENQ, GS a). If XON/OFF control is used, this signal is not checked.This signal can be used to reset the printer according the DIP switch settings. The printer is reset when the signal is MARK with more than 1 ms pulse width. Signal ground
6
DSR
I
7
SG
--
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Table 1-7. Interface Connector Specifications and Functions
Pin number Signal name I/O Function 1) When DTR/DSR control is selected, this signal indicates whether the printer is busy. MARK indicates busy and SPACE indicates not busy. The busy condition is changed using DIP switch 5 of the bank 2 as shown in Table 1-7a. 2) When XON/OFF control is selected, the signal indicates whether the printer is correctly connected and is ready to receive data. SPACE indicates "ready". The signal is always SPACE except in the following two cases: (o) During the interval between power-on and the time when the printer is ready to receive data. (o) During the self-test. 25 INIT I Changing the DIP switch setting enables this signal to be used as a reset signal for the printer. The printer is reset when the signal remains SPACE for 1 ms or more.
20
DTR
O
Table 1-7a. Pin 20 Information
DIP SW 2-5 status Printer status ON During the interval between power-on (reset using interface) and the time when the printer is ready to receive data. During the self-test When the cover is open. During paper feeding with the paper feed button. When the printing has stopped due to a paper-end. When an error has occurred. When the receive buffer becomes full (*1). OFF
BUSY
BUSY
BUSY -- -- -- -- BUSY
BUSY BUSY BUSY BUSY BUSY BUSY
(*1) The "buffer full" condition in this case starts when remaining buffer space falls to 16 bytes or less and ends when it becomes 26 bytes or more. The printer ignores the data when the remaining space in the receive buffer is 0 bytes. Note Pins 8 - 19 and 21 - 24 are not used.
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XON/XOFF control
When XON/XOFF control is selected, the XON and XOFF output timing is as described below. (XON code: 11H; XOFF code: 13H) Transmit timing differs depending on the DIP switch 5 of the bank 2.
Table 1.8. XON/XOFF Transmit Timing
DIP SW 2-5 status Printer status ON When the printer goes on-line after the power-on or reset with interface. When the receive buffer is released from the buffer full state. XON transmission When the printer changes to on-line. (*1) When the printer recovers from an error by the DLE ENQ 1 or DLE ENQ 2. When receive buffer becomes full. XOFF transmission When the printer changes to off-line. (*2) -- Transmit -- -- Transmit Transmit Transmit Transmit Transmit Transmit OFF Transmit Transmit
(*1) XON is not transmitted when the receive buffer is full. (*2) XOFF is not transmitted when the receive buffer is full. Notes on setting DIP switch 2-5 on t The printer stops printing mechanism operation but does not go off-line when an error has occurred, printing stops due to a paper-end, or paper is fed using the paper feed button. t When setting DIP SW 2-5 on to enable handshaking with the host computer, be sure to check the printer status by the GS a command and automatic status transmission function. In this setting, the default values of n for GS a is 2, and the printer automatically transmits the changes in on-line/offline. t When using DLE EOT, DLE ENQ, and GS ENQ, be sure that the receive buffer does not become full. a) When using a host that cannot transmit data when the printer is busy: If an error has occurred, DLE EOT, DLE ENQ, and GS ENQ cannot be used when the printer is busy due to receive buffer-full. b) When using a host that can transmit data when the printer is busy: When the receive buffer becomes full while transmitting data, DLE EOT, DLE ENQ, or GS ENQ using between the bit image data is processed as bit image data. The data transmitted when the receive buffer is full may be lost.
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TM-U950/U950P Technical Manual The following illustrates an example serial interface connection:
Host (DTE example 8251) TXD DSR CTS RXD DTR FG SG Printer RXD DTR RTS TXD DSR FG SG
When connected to a DCE-type device, data should not be sent non-stop (without handshake). DTE = Data Terminal Equipment DCE = Data Circuit Terminating Equipment
Figure 1-16. Serial Interface Connection Example
Parallel interface
(Bidirectional parallel interface in accordance with the IEEE 1284 nibble/byte modes). Copyright © 1994 by the Institute of Electrical and Electronic Engineers, Inc.
Compatibility mode
(Data transmission from host to printer: Centronics compatible) Data transmission: Synchronization: Handshaking: Signal levels: Connector: 8-bit parallel Externally supplied nStrobe signals nAck and Busy signals TTL compatible 57RE-40360-830E(DDK) or equivalent (IEEE 1284 Type B)
Reverse mode
(Data Transmission from printer to host) The STATUS data transmission from the printer to the host is accomplished in the Nibble or Byte mode. This mode allows data transmission from the asynchronous printer under the control of the host. Data transmission in the Nibble mode are made via the existing control lines in units of four bits (Nibble). In the Byte mode, data transmission is accomplished by making the 8-bits data lines bidirectional. Neither mode can operate at the same time as the compatibility mode, so switching is always required. The 1284 Nibble/Byte modes may be subject to change without notice.
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TM-U950P printer status and signals
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 to 30 31 32 33 34 35 36 Printer Printer Host Host Printer Printer Source Host Host/Printer Host/Printer Host/Printer Host/Printer Host/Printer Host/Printer Host/Printer Host/Printer Printer Printer Printer Printer Host Compatibility mode nStrobe Data0 (LSB) Data1 Data2 Data3 Data4 Data5 Data6 Data7 (MSB) nAck Busy PError Select nAutoFd NC GND FG Logic-H GND nInit nFault GND DK_STATUS +5V nSelectIn Nibble mode HostClk Data0 (LSB) Data1 Data2 Data3 Data4 Data5 Data6 Data7 (MSB) PtrClk PtrBusy/Data3, 7 AckDataReq/ Data2, 6 Xflag/Data1, 5 HostBusy ND GND FG Logic-H GND nInit nDataAvail/Data0, 4 ND ND ND 1284-Active Byte mode HostClk Data0 (LSB) Data1 Data2 Data3 Data4 Data5 Data6 Data7 (MSB) PtrClk PtrBusy AckDataReq Xflag HostBusy ND GND FG Logic-H GND nInit nDataAvail ND ND ND 1284-Active
NC: Not connected, ND: Not defined Notes: t A prefix "n" to signal names refers to low active signals. t If the host does not have any one of the signal lines listed above, two-way communication fails. t For interfacing, signal lines should use twisted pair cables with the return sides connected to the signal ground level.
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TM-U950/U950P Technical Manual t Interfacing conditions should be all based on the TTL level. In addition, both the rise time and fall time of each signal must be 0.5 µs or less. t Data transmission should not ignore the signal nAck or Busy. An attempt to transmit data with either signal, nAck or Busy, ignored can cause lost data. (Data transmission to the printer should be made after verifying the nAck signal or while the Busy signal is low.) t Interface cables should be as short as possible.
Precautions on receiving status from the printer
The printer status transmission is available by using the both-way communication facility in the Nibble/Byte mode in accordance with the IEEE 1284 mode. The following precautions must be taken for receiving the status from the printer. t The allowable capacity of the printer's internal buffer is 100 bytes. Status signals exceeding this capacity will be discarded. To prevent possible loss of status data, the host should always be ready for data reception (reverse mode). t When ASB is used, the host should be in the wait state for data reception (reverse idle mode). When this state is not available, the host should enter the reverse mode to always monitor the presence of data. t When ASB is used, preference should be given to the ASB status for transmission over the other status signals. Any accumulated ASB status signals left for transmission from the last to the newest ASB status transmission should be transmitted together at one time as one ASB status showing the change has been made, followed by the latest ASB status. Example: In the normal (wait) state, the ASB status is configured as follows:
1st status 0000 0000 2nd status 0000 0000 3rd status 0000 0000 4th status 0000 0000
When the following sequence of operations is performed, near end detection, cover open, cover closed, the following pieces of data are accumulated.
1st status 1 2 3 0000 0000 0010 1000 0000 0000 2nd status 0000 0000 0000 0000 0000 0000 3rd status 0000 0011 0000 0011 0000 0011 4th status 0000 0000 0000 0000 0000 0000 Near end detection Cover open Cover closed
When the ASB status is received following this, a total of 8 bytes of ASB will be transmitted as follows.
1st status Accumulated ASB (1+2+3) + The latest ASB (3) 0010 1000 1st status 0000 0000 2nd status 0000 0000 2nd status 0000 0000 3rd status 0000 0011 3rd status 0000 0011 4th status 0000 0000 4th status 0000 0000
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Switching between on-line and off-line
The TM-U950P printer does not have an on-line/off-line button. The printer goes off-line in the following conditions: t Between the time when the power is turned on (including reset using the interface) and when the printer is ready to receive data. t During the self-test. t When the cover is open. t During paper feeding using the paper feed button. t When the printer stops printing due to a paper-end (when the paper-end sensor detects a paper end or when the paper near-end sensor is enabled by ESC c 4 and detects a paperend). t During the macro execution standby state. (The macro is executed by pressing the paper feed button.) t When an error has occurred.
Notes on setting DIP switch 2-5 to ON
The printer mechanism stops but does not become busy when an error has occurred, the cover is open, printing stops due to a paper end, or paper is fed using the PAPER FEED button. When setting DIP switch 2-5 to ON to enable handshaking with the printer, be sure to check the printer status using the GS a command and the ASB function. In this setting, the default value of n for GS a is 2. The printer automatically transmits the printer status, depending on on-line/ off-line changes. When using DLE EOT, DLE ENQ and GS ENQ, be sure that the receive buffer does not become full. t When using a host that cannot transmit data when the printer is busy and if an error occurs, DLE EOT, DLE ENQ and GS ENQ cannot be used when the printer is busy due to a receive buffer-full state. t When using a host that can transmit data when the printer is busy and the receive buffer becomes full while transmitting bit-image data, a DLE EOT, DLE ENQ or GS ENQ used while sending bit-image data is processed as bit-image data, not as acommand. Secondly, any data transmitted when the receive buffer is full may be lost. Thirdly, data sent during data entry or data sent when the printer is busy may be lost regardless of the DIP switch setting. Example: Check the printer status using ESC v or ESC u after transmitting each line of data and use the 2K byte receive buffer. Transmit one line of data so that the receive buffer does not become full.
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Switches and Buttons
The power switch is located on the front side of the printer, at the lower left. The operation panel buttons are located on the right top side of the printer. Two banks of DIP switches are located on the bottom of the printer. (See Figure 1-1.)
Power switch
Turns the printer on or off. Power switch cover guards the power switch from incorrect operation. For using the cover see Mounting the Power Switch Cover in Chapter 3.
Operation panel buttons
The ESC c 5 command determines whether or not the operation panel buttons are active. t RECEIPT FEED button Type: Function: Non-locking push button If this button is pushed once and released, the printer feeds receipt paper for one line based on the line spacing set by ESC 2 and ESC 3. If this button is held down, the printer feed paper continuously. The paper is fed after the carriage is moved to the center of the receipt paper roll. t JOURNAL/SLIP FEED button Type: Function: Non-locking push button If this button is pushed once and released, the printer feeds journal paper for one line based on the line spacing set by ESC 2 and ESC 3. If this button is held down, the printer feeds paper continuously. When this button is pushed in slip mode (slip LED lights or blinks), the printer feeds slip paper. In 2-sheet mode, the paper is fed after the carriage is moved to the center of the journal paper roll. In slip mode, the paper is fed after the carriage is moved to the right edge of the slip paper. Notes t When the printer cover is open, these buttons are active regardless of the ESC c 5 setting. t Be careful not to catch your finge