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Print Head Cleaning

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7.1.2 Print Head Cleaning TM-L90/TM-L90 Peeler Model Technical Reference Guide CAUTION: The print head is very hot right after printing and is very dangerous. Be sure to allow the print head to cool down (after printing) before cleaning it. Also, be sure to turn off the printer power before cleaning the print head. Paper dust on the heating elements may lower the print quality. In this case, clean the print head as follows. 1. Turn off the power. 2. Open the roll paper cover. 3. Clean the thermal elements of the print head using a cotton swab moistened with alcohol solvent (ethanol or isopropyl alcohol). Print Head CAUTION: Do not touch the print head thermal elements with your bare hands. Doing so may have a bad effect on the head thermal elements due to the adhesion of dirt. Be careful not to scratch the print head when cleaning it. 4. Install roll paper and close the roll paper cover. For the method of inserting the roll paper, refer to "Paper Loading Method" on page 55. 5. Close the roll paper cover. Note: Depending on the roll paper used, paper dust may stick to the platen roller and roll paper end sensor. To remove the paper dust, clean the platen roller and roll paper end sensor with a cotton swab moistened with water. Epson recommends cleaning of the thermal head periodically (generally every three months) to maintain receipt print quality. Keep pieces of metal away from contact with the head thermal elements and driver IC as they are extremely susceptible to damage. If thermal paper contains Na, K, CI or other ions, be sure to use the specified paper as ions may adversely affect the head thermal elements. Handling 109

Section	Page
For Safety	4
Key to Symbols	4
Warnings	5
Cautions	6
Restriction of Use	6
Modular Connector	6
About This Manual	7
Aim of the Manual	7
Manual Content	7
Related Documentation	7
Product Overview	13
1.1 Product Structure	13
1.1.1 Models	13
1.1.2 Accessories	13
1.1.3 Option	14
1.2 Name and Description of Each Part	15
1.2.1 Part Names (TM-L90)	15
1.2.2 Part Names (TM-L90 Peeler Model)	16
1.2.3 Paper FEED button inside the printer	17
1.2.4 Control Panel	17
1.2.5 Power Switch	19
1.2.6 Power Switch Cover	20
1.2.7 Mode Switch (TM-L90 Peeler Model Only)	21
1.2.8 Connectors	22
Setup	23
2.1 Setup Flow	23
2.2 Installation Procedures	24
2.2.1 Precaution For Installation	24
2.2.2 Instructions for Installation	25
2.3 Adjusting Roll Paper Near-End Detection Position	27
2.3.1 With TM-L90	27
2.3.2 With the TM-L90 Peeler Model	31
2.4 Connecting AC adapter (PS-180)	35
2.4.1 Attaching AC adapter	35
2.4.2 Caution about AC adapter and Supply Voltage	36
2.5 Autocutter Settings (TM-L90 only)	37
2.5.1 Cautions on the Lengths of the Receipts/Labels to Issue	37
2.5.2 Setting Procedure	38
2.6 Setting Roll Paper Width	40
2.7 DIP Switch Settings	42
2.8 Memory Switch Settings	44
2.8.1 Memory switches of TM-L90	45
2.8.2 Memory switches of TM-L90 Peeler Model	50
2.9 Paper Loading Method	55
2.9.1 With TM-L90	55
2.9.2 With the TM-L90 Peeler Model	56
2.9.3 Setting Paper Layout	59
2.9.4 Clearing Paper Layout Setting	64
Connecting to the Host Computer and Options	65
3.1 Connecting the Cable	65
3.2 Connecting to the Host Computer	66
3.2.1 With the RS-232C Interface	66
3.2.2 With the Parallel (IEEE1284) Interface	69
3.2.3 With the USB Interface	70
3.2.4 With the Ethernet Interface (TM-L90 only)	72
3.3 Connecting to the Drawer	74
3.3.1 Setting the internal buzzer (for models with an internal buzzer)	74
Setting/Checking Modes	77
4.1 Setting/Checking Modes of TM-L90 4** models, TM-L90 Peeler 39* models	77
4.1.1 Self-test Mode	78
4.1.2 NV Graphics Information Print Mode	79
4.1.3 Memory Switch Setting Mode	80
4.1.4 Hexadecimal Dump Mode	81
4.2 Setting/Checking Modes of TM-L90 other than 4** models, TM-L90 Peeler other than 39* models	82
4.2.1 Self-test Mode	82
4.2.2 Memory Switch Setting Mode	83
4.2.3 Hexadecimal Dump Mode	84
Application Development Information	85
5.1 Introduction of Control Methods	85
5.1.1 Windows Driver (EPSON Advanced Printer Driver)	85
5.1.2 EPSON OPOS ADK	87
5.1.3 ESC/POS Commands	90
5.1.4 Various Utilities	91
5.2 Sensors	91
5.2.1 Paper Sensors	91
5.2.2 Printer Cover Sensor	92
5.2.3 Label Peeling Sensor (Peeler Specification Only)	94
5.3 Barcode Printing	94
5.4 CODE 128 Barcode	95
5.5 Precautions for Two-Dimensional Code Printing	99
5.6 NV Memory	99
5.7 FAQ List	100
ESC/POS Command-Related Information	103
6.1 TM Printer Operation Performed When Power Switch is Disabled	103
6.1.1 Power Switch-Related User Operation List	104
6.1.2 Power Off Control by the Host	104
6.2 Head Divided Control	104
6.3 Control After Paper Cut	105
6.4 NV Memory	105
6.5 Customizing Printer	106
6.5.1 Printer Initial Setting Up	106
6.5.2 Changing Command Default Values	106
6.5.3 Using the NV Memory	106
6.6 Printer Status	106
Handling	107
7.1 Maintenance	107
7.1.1 Cleaning the autocutter (TM-L90 only)	107
7.1.2 Print Head Cleaning	109
7.1.3 Cleaning the peeler (TM-L90 Peeler Model only)	110
7.2 Troubleshooting	111
7.2.1 Panel LED and Error Status	111
7.2.2 The autocutter is jammed or the roll paper cover will not open (TM-L90 only)	118
7.2.3 When a paper jam occurs (TM-L90 Peeler Model)	119
7.2.4 The printer became inoperative after you change the interface reset signal in the memory switch setting mode	119
7.3 Shipping Procedures	120
Appendix	121
Setting items for Memory Switch Setting Mode	121
Setting items of TM-L90 4** models	121
Setting items of TM-L90 other than 4** models	125
Setting items of TM-L90 Peeler 39* models	126
Setting items of TM-L90 Peeler other than 39* models	128
Product Specifications	130
Product Specifications	130
Print Specifications	133
Reliability	134
Character Specifications	137
Paper Feed Specifications	138
Paper Specifications	138
Printing Area	139
Printing Position in Relation to Cutter Position (TM-L90)	141
Printing Position, Peeling Position, Manual Cutter Position (TM-L90 Peeler Model)	142
Overview of External Dimensions	143
Interface And Connectors	146
RS-232 Serial Interface	146
IEEE1284 Parallel Interface	149
Option Specifications	152
PS-180	152
Consumable Specifications	154
Paper Specification	154
Specified Roll Paper	155
Requirements for Receipt Paper	156
Requirements for Die-Cut Label Paper	157
Requirements for Continuous Label Paper	162
Notes on Paper Handling	164
Character Code Table	165
Page 0 (PC437 : USA, Standard Europe)	165
Page 1 (Katakana)	166
Page 2 (PC850: Multilingual)	167
Page 3 (PC860: Portuguese)	168
Page 4 (PC863: Canadian-French)	169
Page 5 (PC865: Nordic)	170
Page 11 (PC851: Greek)	171
Page 12 (PC853: Turkish)	172
Page 13 (PC857: Turkish)	173
Page 14 (PC737: Greek)	174
Page 15 (ISO8859-7: Greek)	175
Page 16 (WPC1252)	176
Page 17 (PC866: Cyrillic #2)	177
Page 18 (PC852: Latin 2)	178
Page 19 (PC858: Euro)	179
Page 20 (Thai character code 42)	180
Page 21 (Thai character code 11)	181
Page 22 (Thai character code 13)	182
Page 23 (Thai character code 14)	183
Page 24 (Thai character code 16)	184
Page 25 (Thai character code 17)	185
Page 26 (Thai character code 18)	186
Page 30 (TCVN-3: Vietnamese)	187
Page 31 (TCVN-3: Vietnamese)	188
Page 32 (PC720: Arabic)	189
Page 33 (WPC775: Baltic Rim)	190
Page 34 (PC855: Cyrillic)	191
Page 35 (PC861: Icelandic)	192
Page 36 (PC862: Hebrew)	193
Page 37 (PC864: Arabic)	194
Page 38 (PC869: Greek)	195
Page 39 (ISO8859-2: Latin 2)	196
Page 40 (ISO8859-15: Latin 9)	197
Page 41 (PC1098: Farsi)	198
Page 42 (PC1118: Lithuanian)	199
Page 43 (PC1119: Lithuanian)	200
Page 44 (PC1125: Ukrainian)	201
Page 45 (WPC1250: Latin 2)	202
Page 46 (WPC1251: Cyrillic)	203
Page 47 (WPC1253: Greek)	204
Page 48 (WPC1254: Turkish)	205
Page 49 (WPC1255: Hebrew)	206
Page 50 (WPC1256: Arabic)	207
Page 51 (WPC1257: Baltic Rim)	208
Page 52 (WPC1258: Vietnamese)	209
Page 53 (KZ1048: Kazakhstan)	210
Page 255 (Blank page)	211

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Handling

109

TM-L90/TM-L90 Peeler Model Technical Reference Guide

7.1.2

Print Head Cleaning

CAUTION:

The print head is very hot right after printing and is very dangerous. Be sure to allow the

print head to cool down (after printing) before cleaning it. Also, be sure to turn off the

printer power before cleaning the print head.

Paper dust on the heating elements may lower the print quality. In this case, clean the print head

as follows.

Turn off the power.

Open the roll paper cover.

Clean the thermal elements of the print head using a cotton swab moistened with alcohol

solvent (ethanol or isopropyl alcohol).

CAUTION:

Do not touch the print head thermal elements with your bare hands. Doing so may have

a bad effect on the head thermal elements due to the adhesion of dirt.

Be careful not to scratch the print head when cleaning it.

Install roll paper and close the roll paper cover.

For the method of inserting the roll paper, refer to "Paper Loading Method" on page 55.

Close the roll paper cover.

Note:

Depending on the roll paper used, paper dust may stick to the platen roller and roll paper end sensor. To

remove the paper dust, clean the platen roller and roll paper end sensor with a cotton swab moistened with

water.

Epson recommends cleaning of the thermal head periodically (generally every three months) to maintain

receipt print quality.

Keep pieces of metal away from contact with the head thermal elements and driver IC as they are extremely

susceptible to damage.

If thermal paper contains Na, K, CI or other ions, be sure to use the specified paper as ions may adversely

affect the head thermal elements.

Print Head