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Epson C31C636834 Technical Reference - Page 22

Cleaning the Thermal Head

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If paper is caught in the cutter and you cannot open the printer cover 1. Open the cutter cover as shown in the illustration below. 2. Turn the knob until you see a triangle in the opening. This returns the cutter blade to the normal position. There is a label near the cutter to assist you. See the illustration below. 3. Close the cutter cover. 4. Open the printer cover and remove the jammed paper. 1.4.3 Cleaning the Thermal Head CAUTION: After printing, the thermal head can be very hot. Be careful not to touch it and to let it cool before you clean it. Do not damage the thermal head by touching it with your fingers or any hard object. Turn off the printer, open the printer cover, and clean the thermal elements of the thermal head with a cotton swab moistened with an alcohol solvent (ethanol, methanol, or IPA). Epson recommends cleaning the thermal head periodically (generally every 3 months) to maintain receipt print quality. 1-8 Product Overview Rev. A

Section	Page
Revision History	3
For Safety	4
Key to Symbols	4
Warnings	5
Cautions	6
Modular Connectors	6
EMC and Safety Standards Applied	6
CE Marking	7
FCC Compliance Statement For American Users	7
For Canadian Users	7
About this Manual	8
Aim of the Manual	8
Manual Content	8
Related Software and Documents	8
Contents	11
Chapter 1	15
Product Overview	15
1.1 Features	15
1.2 Product Structure	16
1.2.1 Model	16
1.2.2 Accessories	16
1.2.3 Options	16
1.2.4 Consumable products	16
1.2.5 TM-T88IV Basic Specification Table	17
1.3 Part Names and Basic Operation	17
1.3.1 Part Names	17
1.3.2 Control Panel	18
1.3.2.1 LED	18
1.3.2.2 Buttons	18
1.3.3 Power Switch	19
1.3.4 Connectors	19
1.4 Handling the Printer	19
1.4.1 Installing and Replacing Roll Paper	20
1.4.1.1 Installing Roll Paper	20
1.4.1.2 Replacing Paper	21
1.4.2 Removing Jammed Paper	21
1.4.3 Cleaning the Thermal Head	22
1.4.4 Power Switch Cover	23
1.4.5 Connector Cover	23
1.4.5.1 Attaching and Removing the Connector Cover	23
1.4.6 Shipping Procedures	24
Chapter 2	25
Setup	25
2.1 Installing the Printer	26
2.1.1 Precautions for Horizontal Installation	26
2.1.2 Precautions for Wall Installation	26
2.2 Setting the DIP Switches	26
2.2.1 DIP Switch Positions and Steps for Changing DIP Switch Settings	26
2.2.2 DIP Switch Functions	27
2.2.2.1 DIP switch settings for serial interface specifications	27
2.2.2.2 DIP switch settings for other interface specifications	29
2.3 Customized value	30
2.4 Adjusting the Roll Paper Near-End Detector	30
2.5 Connecting the Printer to the Host Computer	32
2.5.1 Serial Interface Connection	32
2.5.1.1 Cross cable wiring diagrams	32
2.5.1.2 Serial interface connection diagrams	32
2.5.1.3 Connecting the serial interface (RS-232) cable	34
2.5.2 Parallel Interface Connection	34
2.5.2.1 Parallel interface connection diagram	35
2.5.2.2 Connecting the parallel interface cable	35
2.5.3 USB Interface Connection	35
2.5.3.1 USB Interface Connection Diagram	36
2.5.3.2 Connecting the USB interface cable	36
2.5.4 Ethernet Interface Connection	37
2.5.4.1 Ethernet Interface Connection Diagram	37
2.5.4.2 Connecting the Ethernet Interface Cable	38
2.5.5 Wireless LAN Interface Connection	39
2.6 Connecting Power Supply Unit and Cash Drawer	39
2.6.1 Connecting the Power Supply Unit	39
2.6.2 Connecting the Drawer Kick-out Cable	40
2.7 Installing the Driver	40
Chapter 3	41
Application Development Information	41
3.1 Introducing the Control Methods	41
3.1.1 Windows Driver (EPSON Advanced Printer Driver)	41
3.1.1.1 EPSON Advanced Printer Driver overview	41
3.1.1.2 EPSON Advanced Printer Driver contents	42
3.1.1.3 EPSON Advanced Printer Driver support environment	42
3.1.1.4 Driver information and download destination	43
3.1.2 EPSON OPOS ADK	43
3.1.2.1 EPSON OPOS ADK (OPOS Control) overview	44
3.1.2.2 EPSON OPOS ADK contents	44
3.1.2.3 EPSON OPOS ADK support environment	45
3.1.2.4 Driver information and download destination	45
3.1.3 ESC/POS Commands	46
3.1.4 Various Utilities	46
3.1.4.1 Memory Switch Setting Utility	46
3.1.4.2 IP address setup utility for UB-E02	46
3.1.4.3 Electronic logo storage utility for NVRAM	46
3.2 Switches and Buttons	46
3.2.1 FEED Button	47
3.3 Panel LEDs and Error Status	47
3.3.1 (POWER) LED	47
3.3.2 PAPER OUT LED	47
3.3.3 Error LED	48
3.3.3.1 Error Codes	48
3.4 Sensors	50
3.4.1 Paper Sensors	50
3.4.1.1 Roll paper near-end sensor	50
3.4.1.2 Roll Paper End Sensor	50
3.4.2 Printer Cover Sensor	50
3.4.2.1 Roll Paper Cover Open Sensor	50
3.4.3 Offline	51
3.4.4 Busy State	51
3.4.4.1 Selecting conditions for invoking a BUSY state	51
3.5 NVRAM (Non-volatile Memory)	52
3.6 Bar Code Printing	52
3.7 Notes on Printing 2-Dimensional Code	53
3.8 Two-color printing	53
3.9 Operating Mode (Switch Panel Operation)	53
3.9.1 Self-test Mode	53
3.10 FAQ List	54
3.10.1 Q: Why has my print data dropped out?	54
3.10.1.1 Corrective procedure	54
3.10.2 Q: Why does the drawer kick-out not operate properly?	54
3.10.3 Q: I cannot print part of Page 0 in Visual Basic. Why?	55
Chapter 4	57
ESC/POS Command-related Information	57
4.1 NV Memory (Non-volatile Memory)	57
4.1.1 Using NV Memory	57
4.2 Printer Status	58
4.3 Precautions When the Printer Is Offline	58
4.4 Outputting Hex Dumps	58
Chapter 5	59
Product Specifications	59
5.1 Product Specifications (TM-T88IV)	59
5.2 Print Specifications (TM-T88IV)	60
5.3 Character Specifications (TM-T88IV)	61
5.4 Paper Specifications (TM-T88IV)	61
5.5 Printable Area (TM-T88IV)	62
5.6 Print Position versus Cutter Position (TM-88IV)	63
5.7 Overview of External Dimensions (TM-T88IV)	64
5.7.1 External Dimensions	64
5.8 Operating Specifications (TM-T88IV)	65
Appendix A	67
Interfaces and Connectors	67
A.1 RS-232 Serial Interface	67
A.1.1 Interface Board Specifications (RS-232-compliant)	67
A.1.2 Functions of each Connector Pin	68
A.1.3 XON/XOFF	68
A.1.4 Code	69
A.2 IEEE 1284 Parallel Interface	69
A.2.1 Modes	69
Compatibility mode	69
Reverse mode	70
A.2.2 Interface Signals	71
Appendix B	73
Options and Consumables	73
B.1 Roll Paper	73
B.2 Power Supply	73
B.2.1 PS-180	73
B.2.1.1 Electrical characteristics	73
B.2.1.2 Case specifications	74
B.2.1.3 Material	74
B.2.1.4 AC cable selection	74
Appendix C	75
Character Code Tables	75
C.1 Page 0 (PC437: USA, Standard Europe)	75
C.2 Page 1 (Katakana)	76
C.3 Page 2 (PC850: Multilingual)	77
C.4 Page 3 (PC860: Portuguese)	78
C.5 Page 4 (PC863: Canadian-French)	79
C.6 Page 5 (PC865: Nordic)	80
C.7 Page 16 (WPC1252)	81
C.8 Page 17 (PC866: Cyrillic #2)	82
C.9 Page 18 (PC852: Latin2)	83
C.10 Page 19 (PC858: Euro)	84
C.11 Page 255 (Blank Page)	85
C.12 International Character Set	86
Appendix D	87

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1-8

Product Overview

Rev. A

If paper is caught in the cutter and you cannot open the printer cover

Open the cutter cover as shown in the illustration below.

Turn the knob until you see a triangle in the opening. This returns the cutter blade to the

normal position. There is a label near the cutter to assist you. See the illustration below.

Close the cutter cover.

Open the printer cover and remove the jammed paper.

1.4.3

Cleaning the Thermal Head

CAUTION:

After printing, the thermal head can be very hot. Be careful not to touch it and to let it

cool before you clean it. Do not damage the thermal head by touching it with your

fingers or any hard object.

Turn off the printer, open the printer cover, and clean the thermal elements of the thermal head

with a cotton swab moistened with an alcohol solvent (ethanol, methanol, or IPA).

Epson recommends cleaning the thermal head periodically (generally every 3 months) to

maintain receipt print quality.