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Stylus 1500
SERVICE MANUAL AND REFERENCE GUIDE
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EPSON COLOR INKJET PRINTER
Stylus 1500
SERVICE MANUAL
EPSON
4005452
REVISION SHEET
Revision Rev.A Issue Data October 30,1995 Revision Page 1st issue
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PREFACE
This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of Stylus 1500. The instructions and procedures included herein are intended for the experience repair technician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows:
CHAPTER 1. GENERAL DESCRIPTION
Provides a general product overview, lists specifications, and illustrates the main components of the printer.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of printer operation.
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
Includes a step-by-step guide for product disassembly and assembly.
CHAPTER 4. ADJUSTMENTS
Includes a step-by-step guide for adjustment.
CHAPTER 5. TROUBLESHOOTING
Provides Epson-approved techniques for adjustment.
CHAPTER 6. MAINTENANCE
Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.
APPENDIX
Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.
The contents of this manual are subject to change without notice.
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TABLE OF CONTENTS
CHAPTER 1. CHAPTER 2. CHAPTER 3. CHAPTER 4. CHAPTER 5. CHAPTER 6. APPENDIX GENERAL DESCRIPTION OPERATING PRINCIPLES DISASSEMBLY AND ASSEMBLY ADJUSTMENTS TROUBLESHOOTING MAINTENANCE
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Chapter 1 Product Description
Table of Contents
1.1 FEATURES 1.2 SPECIFICATIONS 1.2.1 Printing Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.2 Paper Feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.3 Input Data Buffer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.4 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.5 Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.6 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.7 Safety Approvals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.8 CE Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.9 Acoustic Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-3 1-3 1-5 1-5 1-5 1-6 1-6 1-6 1-7 1-7
1.3 INTERFACES 1-8 1.3.1 Hardware Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 1.3.1.1 Parallel Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 1.3.1.2 Optional Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 1.3.2 Printer Language and Control Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 1.4 OPERATIONS 1.4.1 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.1.1 Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.1.2 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.2 Panel Functions at Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.3 Printer Conditions and Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.4 Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.4.1 Setting Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.4.2 Setting Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.5 Printer Adjustment Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.6 Printer Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4.7 Monochrome Printing Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 PAPER SPECIFICATIONS 1.5.1 Paper Type Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5.2 Printable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5.3 Adjust Lever Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 INK CARTRIDGE SPECIFICATIONS 1.7 PHYSICAL SPECIFICATIONS 1-13 1-13 1-13 1-14 1-15 1-16 1-17 1-17 1-18 1-20 1-22 1-22 1-23 1-23 1-26 1-29 1-30 1-31
1.8 MAIN COMPONENTS 1-32 1.8.1 Main Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 1.8.2 Power Supply Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
List of Figures
Figure 1-1. Stylus 1500 Exterior View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Figure 1-2. Nozzle Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Figure 1-3. Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 Figure 1-4. Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 Figure 1-5. Control Panel Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 Figure 1-6. Default Setting Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 Figure 1-7. Sample Adjustment Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 Figure 1-8. Printable Area for Cut Sheets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26 Figure 1-9. Printable Area for Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 Figure 1-10. Printable Area for Continuous Paper . . . . . . . . . . . . . . . . . . . . . . 1-28 Figure 1-11. Adjust Lever Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 Figure 1-12. C172 MAIN Board Component Layout . . . . . . . . . . . . . . . . . . . . . 1-32 Figure 1-13. C172 PSB/PSE Board Component Layout. . . . . . . . . . . . . . . . . . 1-32
List of Tables
Table 1-1. Options and Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Table 1-2. Print Speeds and Printable Columns . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-3. Character Tables and Fonts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Table 1-4. Connector Pin Assignments and Signals (Forward Channel) . . . . . . 1-9 Table 1-5. Connector Pin Assignments and Signals (Reverse Channel) . . . . . 1-11 Table 1-6. Panel Functions at Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 Table 1-7. Indicator Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 Table 1-8. Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18 Table 1-9. Print Direction Mode Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 1-19 Table 1-10. Printing Direction and ESC U Command . . . . . . . . . . . . . . . . . . . . 1-19 Table 1-11. Cut Sheet Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 Table 1-12. Transparency Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 Table 1-13. Envelope Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 Table 1-14. Index Card Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 Table 1-15. Label (Cut Sheet) Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 Table 1-16. Continuous Paper Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 Table 1-17. Label (Continuous Paper) Specifications . . . . . . . . . . . . . . . . . . . . 1-24 Table 1-18. Banner Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25 Table 1-19. Minimum Margins for Different Cut Sheet Sizes . . . . . . . . . . . . . . 1-26 Table 1-20. Minimum Margins for Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 Table 1-21. Adjust Lever Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
Stylus 1500 Service Manual
General Description
1.1 FEATURES
The Stylus 1500 is a business-use, high-speed, and high-quality color ink jet printer. The main features of this printer are:
o o o o
High print quality for color graphics 720 dpi printing High Speed semi 720 dpi printing Large capacity black ink cartridge 3 million characters (LQ mode) High-speed printing LQ printing at 200 cps Draft printing at 400 cps Built-in auto sheet feeder and push tractor This holds: Envelope to A2 size portrait 100 cut sheets, using 14 lb (55 g/m2) paper 10 envelopes 50 transparency sheets 70 sheets of special paper Two built-in interfaces Bidirectional parallel I/F (IEEE-P1284 compatible) Type-B I/F Easy setup Multilingual messages (five languages), selected using the control panel No DIP switches Four scalable fonts, five LQ fonts, and one draft font installed Scalable fonts: LQ bitmap fonts: Roman T, Sans Serif H, Roman, Sans Serif Roman, Sans Serif, Courier, Prestige, Script
o o o o
Useful character tables Standard: NLSP: Italic, PC437, PC850, PC860, PC861, PC863, PC865, BRASCII, Abicomp, Roman 8, ISO Latin 1 Italic, PC437, PC437 Greek, PC850, PC852, PC853, PC855, PC857, PC866, PC869, MAZOWIA, Code MJK, ISO 8859-7, ISO Latin 1T, Bulgaria, Roman 8, PC774, Estonia, ISO Latin 1, ISO Latin 2, PC866 LAT
Figure 1-1. Stylus 1500 Exterior View
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General Description
Stylus 1500 Service Manual
Table 1-1. Options and Consumables
Model C83216* C823071 / C823081 C82310* C82313* C82315* C82312* C82312* C82331* C836021 / C836022 C836031 / C836061 C836051 / C836061 S020062 S020049 S041059 S041060 S041065 S041066 S041077 S041066 S041062 S041067 S041068 S041069 S041070 S041076 S041071 S041072 S041073 S041074 S041075 S041063 S041064 S041054 Color upgrade kit 32 KB serial interface card 32 KB parallel interface card 32 KB IEEE-488 interface card TWAIN interface card Coax interface card LocalTalkTM interface card Ethernet interface card Parallel interface cable (from D-SUB 25-pin to Amphenol 57) Serial interface cable (from D-SUB 25-pin to D-SUB 25-pin) Serial interface cable (from D-SUB 9-pin to D-SUB 25-pin) Monochrome ink cartridge Color ink cartridge Exclusive paper (360 dpi) A4 Exclusive paper (360 dpi) Letter Exclusive paper (360 dpi) A3 Exclusive paper (360 dpi) Super A3 / B Exclusive paper (360 dpi) A2 Exclusive paper (720 dpi) A4 Exclusive paper (720 dpi) Letter Exclusive paper (720 dpi) Legal Exclusive paper (720 dpi) A3 Exclusive paper (720 dpi) Super A3 / B Exclusive paper (720 dpi) B Exclusive paper (720 dpi) A2 High quality glossy paper A4 High quality glossy paper Letter High quality glossy paper A3 High quality glossy paper Super A3 / B High quality glossy paper B Transparency Transparency A4 Letter Description
Super coated index card for 720 dpi A6
*:
The asterisk mean substitute for the last digit, which varies by each destinations.
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Stylus 1500 Service Manual
General Description
1.2 SPECIFICATIONS
This section provides detailed information about the Stylus 1500.
1.2.1 Printing Specifications
Printing method: Nozzle configuration: On-demand ink jet Monochrome: 64 nozzles (32 x 2 staggered) Color: 60 nozzles (20 x 3, magenta, cyan, yellow)
#64 #63 #62 #61 #60 #59 #58 #57 #19 #19 #19
#20
#20
#20
#3
#3
#3
#7 #6 #5 #4 #3 #2 #1
#2
#2
#2
#1
#1
#1
1.129 mm (16/360") 0.847 mm (12/360")
1.129 mm (16/360")
1.129 mm (16/360")
Monochrome
Magenta
Cyan
Yellow
Paper Feed Direction
Figure 1-2. Nozzle Configuration
Printing direction:
Bidirectional with logic-seeking
Table 1-2. Print Speeds and Printable Columns
Character Pitch 10 cpi (pica) 12 cpi (elite) 15 cpi 17 cpi (pica condensed) 20 cpi (elite condensed) Printable Columns 136 163 204 233 160 LQ Speed 200 cps 240 cps 300 cps 343 cps 400 cps Draft Speed 400 cps 480 cps 600 cps 686 cps 800 cps
Control codes:
ESC/P2 and extended raster graphics codes EPSON remote commands IBM XL24E emulation
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General Description
Fonts: Bitmap LQ fonts: EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script
Stylus 1500 Service Manual
10 cpi, 12 cpi, 15 cpi, Proportional 10 cpi, 12 cpi, 15 cpi, Proportional 10 cpi, 12 cpi, 15 cpi 10 cpi, 12 cpi, 15 cpi 10 cpi, 12 cpi, 15 cpi
Scalable fonts:
EPSON Roman 10.5 pt., 8 pt. - 32 pt. (in units of 2 pt.) EPSON Sans Serif 10.5 pt., 8 pt. - 32 pt. (in units of 2 pt.) EPSON Roman T 10.5 pt., 8 pt. - 32 pt. (in units of 2 pt.) EPSON Sans Serif H 10.5 pt., 8 pt. - 32 pt. (in units of 2 pt.)
Note:
Each typeface has four variations (normal, bold, italic, and bold italic).
Table 1-3. Character Tables and Fonts
Bitmap Fonts EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script Scalable Fonts
Character Tables
EPSON Roman EPSON Sans Serif
EPSON Roman T EPSON Sans Serif H
Standard Version
Italic PC437 (U.S., Standard Europe) PC850 (Multilingual) PC860 (Portuguese) PC861 (Icelandic) PC863 (Canadian-French) PC865 (Nordic) BRASCII Abicomp Roman 8 ISO Latin 1 Italic PC437 (U.S., Standard Europe) PC437 (Greek) PC850 (Multilingual) PC852 (East Europe) PC853 (Turkish) PC855 (Cyrillic) PC857 (Turkish) PC866 (Russian) PC869 (Greek) MAZOWIA (Poland) Code MJK (CSFR) ISO 8859-7 (Latin/Greek) ISO Latin 1T (Turkish) Bulgaria Roman 8 PC774 Estonia ISO Latin 1 ISO Latin 2 PC866 LAT
Supported
Supported
Supported
NLSP Version
Supported
Supported
None supported
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Stylus 1500 Service Manual
General Description
1.2.2 Paper Feeding
Feeding method: Friction feed with built-in auto sheet feeder (ASF) and push tractor feed 1/6 inch, 1/8 inch, or programmable in units of 1/360 inch Cut sheet front entry / front exit by ASF Single sheet rear entry / front exit and continuous paper rear entry / front exit 71 ms (1/6 inch) 3 inches/second (continuous feeding)
Note :
Reverse feeding beyond 9.5 mm (0.38") is not allowed.
Line spacing: Paper path:
Feeding speed:
1.2.3 Input Data Buffer
Capacity: 256 KB
1.2.4 Electrical Specifications
120 V Version
Rated voltage: Input voltage range: Rated frequency range: Input frequency range: Rated current: Power consumption: Insulation resistance: Dielectric strength: 120 VAC 103.5 - 132 VAC 50 - 60 Hz 49.5 - 60.5 Hz 0.7 A Approximately 23 W (self-test with 10-cpi LQ characters) 10 M minimum (500 VDC between AC line and chassis) 1000 VAC RMS - 1 minute or 1200 VAC RMS - 1 second (between AC line and chassis)
220 V Version
Rated voltage: Input voltage range: Rated frequency range: Input frequency range: Rated current: Power consumption: Insulation resistance: Dielectric strength: 220 - 240 VAC 198 - 264 VAC 50 - 60 Hz 49.5 - 60.5 Hz 0.4 A Approximately 20 W (self-test with 10-cpi LQ characters) 10 M minimum (500 VDC between AC line and chassis) 1000 VAC RMS - 1 minute or 1200 VAC RMS - 1 second (between AC line and chassis)
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General Description
Stylus 1500 Service Manual
1.2.5 Environmental Conditions
Temperature: Operating: Non-operating: Non-operating: *1 10 to 35° C 20 to 40° C 20 to 60° C 1 month at 40° C 120 hours at 60° C 20 to 80% RH 5 to 80% RH 1G, within 1 ms 2 G, within 2 ms 0.15 G 0.50 G
Humidity: Resistance to shock: Resistance to vibration:
Operating: *2 Non-operating:
*1, *2
Operating: Non-operating:*1 Operating: Non-operating: *1
Humidity (% RH) 80%
Notes:
*1 In shipment container.
*2 Without condensation.
55%
Guaranteed Range
20%
10° C (50° F)
27 ° C 35 ° C (80° F) (95° F)
°C (° F)
Figure 1-3. Environmental Conditions 1.2.6 Reliability
Total print volume: Printhead life: 75,000 pages (letter or A4) 1,000 million dots/nozzle
1.2.7 Safety Approvals
120 V Version
Safety standards: EMC: UL 1950 with D3 CSA 22.2 950 with D3 FCC part 15 subpart B class B
220 - 240 V Version
Safety standards: EMC: EN 60950 (TÜV, SEMKO, DEMKO, NEMKO, FIMKO) EN 55022 (CISPR Pub. 22) class B EN 50082-1
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Stylus 1500 Service Manual
General Description
1.2.8 CE Marking
220 - 240 V Version
Lower Voltage Directive 73/23/EEC: EMC Directive 89/336/EEC: EN60950 EN55022 Class B EN50082-1 IEC801-2 IEC801-3 IEC801-4
1.2.9 Acoustic Noise
Noise level: Approximately 45 dB(A) (according to ISO 7779)
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General Description
Stylus 1500 Service Manual
1.3 INTERFACES
1.3.1 Hardware Interfaces
This section describes the Stylus 1500 interfaces. The printer is standard-equipped with a parallel interface.
1.3.1.1 Parallel Interface Forward Channel
Transmission mode: Synchronization: Handshaking: Signal level: Adaptable connector: 8 bit parallel, IEEE-P1284 compatibility mode STROBE pulse BUSY and ACKNLG signal TTL-compatible level (IEEE-P1284 Level 1 device) 57-30360 (Amphenol or equivalent)
The BUSY signal is set HIGH before either ERROR is set LOW or PE is set HIGH, and BUSY is held HIGH until all these signals return to the inactive state. The BUSY signal goes HIGH in the following cases: o During data entry (See Figure 1-4 below.) o When the input data buffer is full. o When the INIT signal is LOW or during hardware initialization. o During a printer error condition (See the ERROR signal description below.) o During self-test printing. o In default setting mode. o When the parallel interface is not selected. The ERROR signal is LOW when the printer is in one of the following conditions: o Printer hardware error (fatal error). o Paper-out error. o Release lever operation error. The PE signal is HIGH during a paper-out error.
D ATA
DATA (n)
DATA (n+1)
STROBE
500 ns (min.)
500 ns (min.)
500 ns (min.)
0 (min.)
B US Y
A C K N LG
0 (min.) 500 ns (max.)
0 (min.)
500 ns ~10 µs
* : The rise and fall time of every output signal must be less than 120 ns. The rise and fall time of every input signal must be less than 200 ns.
Figure 1-4. Data Transmission Timing
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General Description
Table 1-4 shows the connector pin assignments and signals for the forward channel of the parallel interface. Table 1-5 shows this information for the reverse channel.
Table 1-4. Connector Pin Assignments and Signals (Forward Channel)
Pin No. Signal Name Return GND Pin 19 I/O Description Reading of data is performed at the falling edge of this pulse. Signals DATA0 - DATA7 represent data bits 0 to 7, respectively. Each signal is HIGH when the data is logical 1 and LOW when the data is logical 0. This signal is a negative pulse indicating that the printer can accept more data. When this signal is HIGH, the printer cannot receive data. When this signal is HIGH, the printer detects a paper-out error. This signal is always HIGH when the printer is powered on.
1
STROBE
I
2-9
DATA 0 - 7
20 - 27
I
10 11 12 13 14 15
ACKNLG BUSY PE SLCT AFXT NC
28 29 28 28 30 --
O O O O I --
Not connected. The falling edge of a negative pulse or a LOW signal on this line causes the printer to initialize. A 50 µs (minimum) pulse is necessary. When this signal is LOW, the printer detects an error. Not used. Pulled up to +5 V via a 3.9 K resistor. Pulled up to +5 V via a 3.3 K resistor. Chassis ground. Signal ground. Not used.
31
INIT
30
I
32 36 18 35 17 16, 33 19 - 30 15, 34
ERROR SLIN Logic H +5 V Chassis GND GND NC
29 30 -- -- -- -- --
O I O O -- -- --
Note:
The I/O column indicates the direction of the signal as viewed from the printer.
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Stylus 1500 Service Manual
Reverse Channel
Transmission mode: Adaptable connector: Synchronization: Handshaking: Data transmission timing: Signal level: Extensibility request: IEEE-P1284 nibble mode See the Forward Channel section earlier in this manual. Refer to the IEEE-P1284 specification. Refer to the IEEE-P1284 specification. Refer to the IEEE-P1284 specification. Refer to the IEEE-P1284 specification. The printer responds affirmatively when the extensibility request values are 00H or 04H, as follows: 00H: Request nibble mode reverse channel transfer 04H: Request device ID Return data using nibble mode channel transfer The printer sends following device ID string when requested: ESC/P2 00H 36H MFG: EPSON; CMD: ESCPL2-00; MDL: Stylus 1500; CLS: PRINTER; XL24E 00H 37H MFG: EPSON; CMD: PRPXL24-00; MDL: Stylus 1500; CLS: PRINTER;
Device ID:
Note:
00H denotes a hexadecimal value of zero.
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General Description
Table 1-5. Connector Pin Assignments and Signals (Reverse Channel)
Pin No. 1 Signal Name Host Clk Return GND Pin 19 I/O I Description Host clock signal. Signals DATA0 - DATA7 represent data bits 0 to 7, respectively. Each signal is HIGH when the data is logical 1 and LOW when the data is logical 0. These signals are used to transfer the extensibility request values (described in IEEE-P1284) to the printer. Printer clock signal. Printer busy signal and reverse channel transfer data bit 3 or 7. Acknowledge data request signal and reverse channel transfer data bit 2 or 6. X-flag signal and reverse channel transfer data bit 1 or 5. Host busy signal. Not used. Data available and reverse channel transfer data bit 0 or 4. Active signal for IEEE-P1284 mode. Pulled up to +5 V via a 3.9 K resistor. Pulled up to +5 V via a 3.3 K resistor. Chassis ground. Signal ground. Not connected.
2-9
DATA 0 - 7
20 - 27
I
10 11 12 13 14 31 32 36 18 35 17 16, 33 19 - 30 15, 34
PtrClk Ptr Busy / Data Bits 3, 7 Ack Data Req / Data Bits 2, 6 Xflag / Data Bits 1, 5 Host Busy INIT Data Avail / Data Bits 0, 4 1284-Active Logic-H +5 V Chassis GND GND NC
28 29 28 28 30 30 29 30 -- -- -- -- --
O O O O I I O I O O -- -- --
Note:
The I / O column indicates the direction of the signal as viewed from the printer.
1.3.1.2 Optional Interface
The Stylus 1500 supports an optional Type-B interface with the following characteristics: Reply Message: ESC/P2 is selected: Main type: Product name: Emulation type: MTP48p, PW136cl10cpi, PRG(L0xxxx)rev,AP800ma Stylus 1500 ESCPL2-00
Entity type: EPSON LQ2 XL24E is selected: Main type: Product name: Emulation type: Entity type: MTP48p, PW136cl10cpi, PRG(L0xxxx)rev,AP800ma Stylus 1500 PRPXL24-00 EPSONPRPXL24
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Stylus 1500 Service Manual
1.3.2 Printer Languages and Control Codes
Printer languages and control codes: ESC/P2 IBM 24XL EPSON Remote
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General Description
1.4 OPERATIONS
This section describes the controls, settings, and adjustments used to operate the Stylus 1500.
1.4.1 Control Panel
The control panel for this printer is in the center of the upper case. The panel has 1 lock-type and 6 non-lock-type pushbuttons, and 10 LED indicators for easy operation of the various print functions.
Figure 1-5. Control Panel Appearance
1.4.1.1 Buttons Power
This button turns the printer on or off.
ATTENTION
The power button controls the secondary power supply circuit. Therefore, the primary circuit is hot after power off. Do not connect the interface cable even if the printer power is off while the AC inlet is connected. Otherwise, the circuit board or interface may be damaged.
Pause
This button alternates between printing and non-printing states when there is data in the print buffer. In the pause state, printing stops but communication with the I/F does not stop. Therefore, even in the pause state, the printer receives data from the host until the input data buffer is full.
o Pressing the Pause button while holding down the Alt button resets the printer.
Alt
This button is usually used with another button. o Holding down Alt for 3 seconds moves the printer carriage to the ink cartridge installation position. Pressing Alt again returns the carriage to the home position.
LF/FF
This button feeds one line or a page. o Pressing LF/FF while holding down Alt starts the black printhead cleaning cycle.
Economy/Condensed
This button selects economy or condensed printing mode.
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Font
This button selects the desired font. cycle.
o Pressing Font while holding down Alt starts the color printhead cleaning
Load/Eject
This button loads and ejects the paper.
1.4.1.2 Indicators Operate (green)
Lights when the printer power is on.
Data (orange)
o o
Lights when there is data in the print buffer. Blinks with the Pause LED when an error occurs.
Black Ink Out (red)
Lights when there is no ink in the black ink cartridge, and blinks when the cartridge is low.
Color Ink Out (red)
Lights when there is no ink in the color ink cartridge, and blinks when the cartridge is low.
Paper Out (red)
Lights when the printer is out of paper, and blinks when a paper jam occurs.
Pause (orange)
Lights when printing is paused.
Economy (green)
Lights when economy printing mode is selected.
Condensed (green)
Lights when condensed printing mode is selected.
Font (green)
Shows the selected font.
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General Description
1.4.2 Panel Functions at Power On
The table below describes the functions performed when the indicated buttons are held down while turning on the printer.
Table 1-6. Panel Functions at Power On
Button Alt Economy/Condensed Pause Load/Eject LF/FF Alt + Pause LF/FF + Load/Eject Alt + Economy/Condensed + LF/FF + Pause Function at Printer Power On Starts demonstration printing. Enters default setting mode. Enters print adjustment mode. Starts LQ mode self-test printing. Starts Draft mode self-test printing. Enters ink smudge prevention mode. Enters hex dump mode. Enters reset mode for the EEPROM and Timer IC (for factory and service use only).
Notes:
1. "+" means to press one button while holding down the other button(s). 2. The EEPROM and Timer IC must be reset only by qualified service personnel.
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1.4.3 Printer Conditions and Status
The table below shows how the printer LEDs indicate status and operating conditions.
Table 1-7. Indicator Status
LEDs Printer Status Power Data Ink Ink Paper EconConOut Out Out omy densed (Black) (Color) -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- On Blink -- -- -- Blink -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- On Blink -- Blink -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- On Blink -- -- -- -- Blink Blink -- -- -- On -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Blink -- -- -- -- On -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Blink
Pause
Font Font L R -- -- -- -- -- -- Off Off Off On On On -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Off On Blink Off On Blink -- -- -- -- -- -- -- -- --
Power on Capping after power off Data present Economy mode Condensed mode Pause Micro adjust mode Draft 10 cpi Draft 12 cpi Courier 10 cpi Courier 12 cpi Roman T Proportional Sans Serif H Proportional Ink sequence Ink cartridge change mode Paper out Paper jam No ink cartridge or ink end (black) Ink level low (black) No ink cartridge or ink end (color) Ink level low (color) Release lever error Maintenance request EEPROM and timer reset Fatal error
On Blink -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Blink -- --
-- -- On -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Blink Blink
-- -- -- -- -- On -- -- -- -- -- -- -- Blink Blink -- -- -- -- -- -- -- Blink
Blink Blink
Blink Blink
On (for 1 second only) Blink -- -- -- -- -- Blink -- --
Note:
"--" means that the indicated printer status does not affect the LED.
1.4.4 Default Settings
This printer has user-selectable default settings to which it refers at initialization. The default settings (and factory settings ) are listed in Table 1-8. 1-16 Rev. A
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General Description
1.4.4.1 Setting Method
The method of setting defaults is shown in the flowchart below.
ATTENTION
n Any default value specified is not stored in the EEPROM until the printer is turned off. n The last default value specified before power-off is stored in the EEPROM.
START
Hold down the Economy /Condensed button, and turn on the printer.
The printer prints: 1. Firmware version, Protect counter value A/C. 2. How to set defaults. 3. Current settings.
YE S Change the settings?
Change setting menu: Alt button Change setting value: Pause button
NO Turn printer power off to save settings to the EEPROM.on the main board
END
Figure 1-6. Default Setting Flowchart
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1.4.4.2 Setting Menus
The default setting menus are described in the table below.
Table 1-8. Default Settings
Menus Print direction*1 Font Pitch I/F mode Auto I/F wait mode Software Auto CR (IBM mode only) AGM (IBM mode only) Character tables (standard version) Settings (underlines indicate factory default settings) Auto / Bi-D / Uni-D Draft / Roman / Sans Serif / Courier / Prestige / Script / Roman T / Sans Serif H 10 cpi / 12 cpi / 15 cpi / 17.1 cpi / 20 cpi / Proportional Auto / Parallel / Serial 10 seconds / 30 seconds ESC/P2 / IBM X24E On / Off On / Off Italic PC 437 PC 861 BRASCII PC 850 Abicomp PC 860 Roman 8 PC 863 PC 865 ISO Latin 1 PC 850 PC 866 ISO Latin 1T ISO Latin 1 PC 853 PC 869 Bulgaria ISO Latin 2
Character tables (NLSP version)
Italic PC 437 PC 855 PC 852 MAZOWIA Code MJK Roman 8 PC774 PC866 LAT Italic U.S.A. Italic Denmark On / Off
PC 437 Greek PC 857 ISO 8859-7 Estonia
International character set for italic table Auto line feed Network I/F mode Zero slash Page length for continuous paper Skip over perforation Auto tear off Print mode*3 Paper roll
Italic France Italic Sweden
Italic Germany Italic U.K. Italic Italy Italic Spain 1
Off: Used in standalone environment On: Used in network environment 0 / 0 with slash 11 inch 12 inch On / Off On / Off Plain paper (pure black) / Plain paper (composite black) / Exclusive paper / Transparency On / Off 8.5 inch 70/6 inch Other*2
Notes:
*1. Refer to Tables 1-9 and 1-10. *2. This is selected when a value other than 11, 12, 8.5, or 70/6 inches has been placed in EEPROM by the ESC | command. *3. This mode is provided only for DOS users and is selected according to paper type. Pure black and composite black are selected according to the printed result.
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Table 1-9. Print Direction Mode Characteristics
Item Monochrome Printing Color Printing · Throughput is better. · Color quality with special paper is worse. (Color correction depends on the printing direction.) · Throughput is better. · Color quality with special paper is worse. (Color correction depends on the printing direction.) · Throughput is worse. · Color quality is best.
Auto
Throughput and quality is better.
Bi-D
· Throughput is best. · Print quality may be down. · Throughput is worse. · Print quality is better.
Uni-D
Table 1-10. Printing Direction and ESC U Command
Default Setting Mode Character mode (for DOS) Raster graphics mode (for Windows) Auto ESC U ESC U 0 1 Auto Auto None Auto Bi-D ESC U ESC U 0 1 Bi-D Uni-D None Bi-D Uni-D ESC U ESC U 0 1 Uni-D Uni-D None Uni-D
Bi-D
Uni-D
Auto
Bi-D
Uni-D
Bi-D
Bi-D
Uni-D
Uni-D
Note:
Printing direction is controlled by a driver in the Windows environment.
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1.4.5 Printer Adjustment Mode
The Stylus 1500 allows the user to adjust the printing direction and head gap without a special program. The following list shows the adjustments for this printer in order: Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6
Pattern 7
Uni-D adjustment at 400 cps Bi-D adjustment at 100 cps Bi-D adjustment at 200 cps Bi-D adjustment at 400 cps Head gap adjustment (for the black and color printheads in the carriage movement direction at 100 cps)* Head gap adjustment (for the black and color printheads in the carriage movement direction at 200 cps)*
Head gap adjustment (for the black and color printheads in the paper feed direction)*
* These adjustments are performed only when the color upgrade kit is installed in the printer.
Adjustment Method
Use the following steps to perform the adjustments: 1. Hold down the Pause button while turning on the power. The printer enters adjustment mode. "Using this mode" and the pattern 1 are printed. Select the number of the most closely aligned columns by pressing the Alt button. The black Ink Out, color Ink Out, and Paper Out LEDs show the line number currently selected. This selection advances once each time the Alt button is pressed, and the three LEDs change their combination of On /Off / Blinking to indicate the selection. Specify the selected number by pressing the Pause button. The selected number is set, and the next pattern is printed.
2.
3.
Patterns 1
Figure 1-7. Sample Adjustment Pattern
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4.
General Description
Repeat steps 2 and 3 until the pattern No.4 or 7 is printed. The adjustments are executed in the following order: Pattern 1. Uni-D adjustment at 400 cps Pattern 2. Bi-D adjustment at 100 cps Pattern 3. Bi-D adjustment at 200 cps Pattern 4. Bi-D adjustment at 400 cps Head gap adjustment (for the black and color printheads in the carriage movement direction Pattern 5.* at 100 cps) Pattern 6.* Head gap adjustment (for the black and color printheads in the carriage movement direction at 200 cps) Pattern 7.* Head gap adjustment (for the black and color printheads in the paper feed direction at 360 dpi.)
When the optional color kit is not installed, the pattern 4 is the final pattern and the rest adjustments (pattern 5, 6 and 7) are not executed.
*:
ATTENTION
n Any adjustment value specified is not stored in the EEPROM until the printer is turned off. n The last adjustment value specified before power-off is stored in the EEPROM.. n Before the whole adjustments are executed, the setting value is not stored in the printer.
5.
Turn off the power to exit adjustment mode.
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General Description
1.4.6 Printer Initialization
This printer has three initialization types: hardware, software, and panel.
Stylus 1500 Service Manual
1. Hardware Initialization
Hardware initialization is performed by turning on the printer or sending the INIT signal to the parallel interface. The following functions are executed: o The printer mechanism is initialized. o The input data buffer is cleared. o Downloaded character definitions are cleared. o The print buffer is cleared. o Default values are set.
2. Software Initialization
Software initialization is performed when the printer receives the ESC @ command. The following functions are executed: o The print buffer is cleared. o Default values are set. Note: The last panel settings are kept after software initialization.
3. Panel Initialization
Panel initialization is performed by pressing the Load/Eject button while holding down the Alt button. The following functions are executed: o The input data buffer is cleared. o The print buffer is cleared. o Default values are set.
Note:
The last panel settings are kept after panel initialization.
1.4.7 Monochrome Printing Mode
This printer has a monochrome printing function that allows printing to continue with black ink when the color ink cartridge is out or the color upgrade kit is not installed. This function is selected by the printer driver setting. To enter monochrome printing mode, turn the Power button off and back on again. Notes: 1. Once the printer has entered this function, print data must be resent. 2. The color select command (ESC r) is ignored.
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General Description
1.5 PAPER SPECIFICATIONS
1.5.1 Paper Type Specifications
1. Cut Sheets
Table 1-11. Cut Sheet Specifications A4: 210 mm (8.3") × 297 mm (11.7")
Letter: B5: Legal: B4: A3:
215.9 mm (8.5") × 279.4 mm (11.0" ) 182 mm (7.2") × 257 mm (10.1") 215.4 mm (8.5") × 355.6 mm (14.0") 257 mm (10.1") × 364 mm (14.3") 297 mm (11.7") × 420 mm (16.5")
Size
Ledger: A3 wide: B3: A2: US C: B5 (ISO) B4 (ISO)
279.4 mm (13.0") × 431.8 mm (17.0") 329 mm (13.0") × 483 mm (19.0") 364 mm (14.3") × 514 mm (20.2") 420 mm (16.5") × 594 mm (23.4") 431.8 mm (17.0") × 558.8 mm (22") 176 mm (6.9") × 250 mm (9.8") 250 mm (9.8") × 353 mm (92.6")
Thickness Weight
0.065 mm (0.0025") - 0.11 mm (0.004") ASF: Manual Insertion: 64 g/m2 (17 lb) - 90 g/m2 (24 lb) 52 g/m2 (14 lb) - 90 g/m2 (24 lb)
Quality
Exclusive paper, bond paper, PPC, glossy paper
Note
: The designated face must be used when printing on exclusive paper. : A2 portrait, US-C portrait are used by manual insertion only.
2. Transparencies
Table 1-12. Transparency Specifications
Size Thickness A4: Letter: 210 mm (8.3") × 297 mm (11.7") 215.9 mm (8.5") × 279.4 mm (11.0")
0.075 mm (0.003") - 0.085 mm (0.0033")
Notes: 1. Printing on transparencies is supported only at normal temperatures. 2. The designated face must be used when printing on exclusive paper.
3. Envelopes
Table 1-13. Envelope Specifications
Size Thickness Weight Quality No. 10: 241.3 mm (9.5") × 104.8 mm (4.125") DL: 220 mm (8.7) × 110 mm (4.3") C5: 229 mm (9") × 162 mm (6.4") 0.16 mm (0.006") - 0.52 mm (0.02") 45 g/m2 (12 lb) - 90 g/m2 (24 lb) Exclusive paper, bond paper, PPC, glossy paper
Notes: 1. Printing on envelopes is supported only at normal temperatures. 2. When inserting envelopes, keep the longer side horizontal. 3. When printing on envelopes, set the adjust lever to the proper position. (Refer to Section 1.5.3, Adjust Lever Position.)
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4. Index Cards
Table 1-14. Index Card Specifications
Size Thickness A6: 105 mm (4.1") × 148 mm (5.8")
0.23 mm (0.0091") and less
Note: When printing on index cards, set the adjust lever to the proper position. (Refer to Section 1.5.3, Adjust Lever Position.)
5. Labels (Cut Sheet)
Table 1-15. Label (Cut Sheet) Specifications
Size Thickness Quality A4: Letter: 210 mm (8.3") × 297 mm (11.7") 215.9 mm (8.5") × 279.4 mm (11.0")
0.2 mm (0.0079") and less (base sheet and label) Page printer label
Note: Printing on cut-sheet labels is supported only at normal temperatures.
6. Continuous Paper
Table 1-16. Continuous Paper Specifications
Size Thickness Weight Width: Folding length: 101.6 mm (4") - 406.4 mm (16") 220 mm (8.7") - 110 mm (4.3")
0.065 mm (0.0026") - 0.1 mm (0.0039") 52 g/m2 (14 lb) - 82 g/m2 (22 lb)
7. Labels (Continuous Paper)
Table 1-17. Label (Continuous Paper) Specifications
Size (base paper) Size (label) Thickness (base paper + label) Thickness (label) Quality Width: Folding length: Width: Folding length: 101.6 mm (4") - 406.4 mm (16") 101.6 mm (4") 63.5 mm (2.5") 23.9 mm (0.94")
0.2 mm (0.0079") (The height from the base sheet to the label face is 0.12 mm or less.) 0.12 mm (0.0047") Plain paper
Note: Printing on continuous-paper labels is supported only at normal temperatures.
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General Description
8. Banner
Table 1-18. Banner Specifications
Size Thickness Weight Quality Width: Length: 210 mm (8.3") - 432 mm (17") 5 m (196.6") and less
0.08 mm (0.0031") - 0.1 mm (0.0039") 64 g/m2 (17 lb) - 82 g/m2 (22 lb) Plain paper
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1.5.2 Printable Area
1. Cut Sheets
PW (Page Width) LM (Left Margin) RM (Right M argin)
TM (Top Margin)
Printable Area
PL (Page Length)
BM (Bottom Margin)
Figure 1-8. Printable Area for Cut Sheets
Table 1-19. Minimum Margins for Different Cut Sheet Sizes
LM (Left Margin) (minimum) RM (Right Margin) (minimum)
PW (Paper Width)
Distance to Distance to Distance to Distance to Left Edge Right Edge Left Edge Right Edge A4 297 mm (11.7") Legal landscape 356 mm (14.0") B4 landscape 364 mm (14.3") A3 landscape 420 mm (16.5") Ledger landscape 432 mm (17.0") 3 mm (0.12") 3 mm (0.12") 3 mm (0.12") 3 mm (0.12")
TM (Top Margin) (minimum)
BM (Bottom Margin) (minimum)
3 mm (0.12")
14 mm (0.54")
5 mm (0.20")
3 mm (0.12")
3 mm (0.12")
5 mm (0.20")
3 mm (0.12")
14 mm (0.54")
16 mm (0.63")
3 mm (0.12")
3 mm (0.12")
16 mm (0.63")
3 mm (0.12")
14 mm (0.54")
25 mm (0.98")
13 mm (0.51")
50 mm (1.97")
62 mm (2.44")
3 mm (0.12")
14 mm (0.54")
25 mm (0.98")
25 mm (0.98")
62 mm (2.44")
62 mm (2.44")
3 mm (0.12")
14 mm (0.54")
Note:
The printable area for a cut-sheet label is as same as that for the cut sheet itself.
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2. Envelopes
LM RM
TM
Printable area
BM
Figure 1-9. Printable Area for Envelopes
Table 1-20. Minimum Margins for Envelopes
LM (Left Margin) (minimum) 3 mm (0.12") RM (Right Margin) (minimum) 3 mm (0.12") TM (Top Margin) (minimum) 3 mm (0.12") BM (Bottom Margin) (minimum) 14 mm (0.55")
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3. Continuous Paper
Printable Area 1 : Printable Area 2 : Paper feed pitch is not guaranteed in this area. Paper feed pitch is guaranteed in this area.
*When the paper width is 406.4 mm (16"), this width is more than 38 mm (1.50"). Notes: 1. The printable area for a label is the same as that for continuous paper. 2. The base paper of a continuous-paper label is not within the printing area.
More than 13 mm (0.51") More than 13 mm (0.51")*
Printable Area 1
M or e than 3 m m ( 0.12")
More than 12.5 mm (0.49")
Printable Area 2
Perforation M or e than 9 m m ( 0.35")
Printable Area 1 Printable Area 1
More than 9 mm (0.35")
Printable Area 2
Printable Area 1
Perforation
Printable Area 2 Printable Area 1 Printable Area 1
M or e than 9 m m ( 0.35")
M or e than 9 m m ( 0.35")
Printable Area 2
Printable Area 1
More than 134 mm (5.28")
More than 14 mm (0.55")
Perforation
Figure 1-10. Printable Area for Continuous Paper
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1.5.3 Adjust Lever Position
This printer has an adjust lever to prevent printing smudges caused by the paper thickness not fitting the head gap. The adjust lever must be set to the proper position for the paper type. The adjust lever is located at the left upper side of the printer cover.
Table 1-21. Adjust Lever Position
Paper Type Cut sheets, transparencies, continuous paper, labels Envelopes, index cards Lever Position Platen Gap Adjustment Value
Far side
0
Near side
+ 0.7 mm
0 +
Figure 1-11. Adjust Lever Settings
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Stylus 1500 Service Manual
1.6 INK CARTRIDGE SPECIFICATIONS
Black
Type: Model: Color: Print capacity Life: Storage temperature: Exclusive cartridge S020062 Black 1900 pages /A4 ( LQ Roman ECMA text) 2 years from indicated production date 30° C - 40° C (86° F - 104° F) Storage under a month at 40° C (104° F) 30° C - 60° C (86° F - 140° F) Transit under 120 hours at 60° C (140° F) and under a month at 40° C (104° F) 25.1 mm (W) × 139.6 mm (D) × 105.3 mm (H)
Dimensions:
Color
Type: Model: Color: Print capacity: Life: Storage temperature: Exclusive cartridge S020049 Magenta, cyan, yellow 320 pages / A4 (at 360 dpi, 5% duty and each color) 2 years from indicated production date 20° C - 40° C (4° F - 104° F) Storage under a month at 40° C (104° F) 30° C - 40° C (86° F - 104° F) Packing storage under a month at 40° C (104° F) 30° C - 60° C (86° F - 140° F) Transit under 120 hours at 60° C (140° F) and under a month at 40° C (104° F) 42.9 mm (W) × 56.8 mm (D) × 38.5 mm (H)
Dimensions:
Notes:
1. The ink cartridge cannot be refilled; it is the only consumable. 2. Do not use an ink cartridge that has exceeded the ink life. 3. The ink freezes below -3° C (37° F); however, it can be used after it returns to room temperature.
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1.7 PHYSICAL SPECIFICATIONS
Weight: Dimensions: 11 .5 kg 664 mm (W) × 504 mm (D) × 202 mm (H)
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1.8 MAIN COMPONENTS
The main components of the Stylus 1500 are designed for easy removal and repair. They are as follows: o Main control board (C172 MAIN Board) o Power supply board (C172 PSB/PSE Board) o Control panel board (C172 PNL Board) o Printer mechanism (M-4E60) o Housing
1.8.1 Main Control Board (C172 MAIN Board)
This board consists of a CPU (TMP95C061AF), gate array (E05B16), ROM (CG), PROM, DRAM, EEPROM, motor driver ICs, printhead driver circuits, etc.
Common Driver EEPROM RESET IC MROM Lithium Battery
DRAM
CPU (TMP95C061AF) Gate Array (E05B16)
PF Motor Driver (UDN2917 ) CR Motor Driver (SLA7043M)
Figure 1-12. C172 MAIN Board Component Layout 1.8.2 Power Supply Board (C172 PSB/PSE Board)
This board consists of a transformer, switching FET, regulator IC, diode bridge, etc. This board has two ratings for input AC voltages (120 VAC/220-240 VAC). The power switch is equipped with a secondary circuit that allows the CPU to remain active (min. 20 sec.) after the printer is turned off.
Fus e
Regulator IC
Transformer
Diode Bridge
Switching FET
Figure 1-13. C172 PSB/PSE Board Component Layout
1-32 Rev. A
Chapter 2 Operating Principles
Table of Contents
2.1 OVERVIEW 2-1
2.2 PRINTER MECHANISM OPERATING PRINCIPLES 2-1 2.2.1 Printing Operation Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.2.2 Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.2.3 Carriage Drive Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 2.2.4 Paper Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 2.2.4.1 Auto Sheet Feeder Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 2.2.4.2 Push Tractor Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2.2.4.3 Manual Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2.2.5 Platen Gap Adjust Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 2.2.6 Ink System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9 2.2.7 Pump Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 2.2.8 Cap Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 2.2.9 Wiping Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 2.3 ELECTRICAL CIRCUIT OPERATING PRINCIPLES 2.3.1 Power Supply Circuit Operating Principles . . . . . . . . . . . . . . . . . . . . . . . 2.3.2 Main Control Circuit Operating Principles . . . . . . . . . . . . . . . . . . . . . . . . 2.3.2.1 Reset Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.2.2 Sensor Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.2.3 Carriage Motor Driver Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.2.4 Paper Feed Motor Driver Circuit . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.2.5 Printhead Driver Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 2-14 2-16 2-17 2-17 2-19 2-20 2-21
2.4 INK SYSTEM MANAGEMENT 2-25 2.4.1 Ink Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25 2.4.2 Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
List of Figures
Figure 2-1. Black Printhead Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Figure 2-2. Color Printhead Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Figure 2-3. Printing Operation States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Figure 2-4. Printer Mechanism Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Figure 2-5. Carriage Movement Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Figure 2-6. Paper Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Figure 2-7. ASF Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Figure 2-8. Tractor Paper Advance Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 Figure 2-9. Platen Gap Adjust Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 Figure 2-10. Ink System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9 Figure 2-11. Release Cam Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 Figure 2-12. Pump Mechanism Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 Figure 2-13. Release Cam Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11 Figure 2-14. Paper Feed Mechanism Function. . . . . . . . . . . . . . . . . . . . . . . . . 2-11 Figure 2-15. Pump Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 Figure 2-16. Cap Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 Figure 2-17. Wiping Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 Figure 2-18. Electrical Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Figure 2-19. Power Supply Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15 Figure 2-20. Main Control Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . 2-16 Figure 2-21. Reset Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17 Figure 2-22. Sensor Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17 Figure 2-23. Carriage Motor Driver Circuit Block Diagram . . . . . . . . . . . . . . . . 2-19 Figure 2-24. Paper Feed Motor Driver Circuit Block Diagram . . . . . . . . . . . . . 2-20 Figure 2-25. Printhead Driver Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . 2-21 Figure 2-26. Normal Dot Data Transmission Timing. . . . . . . . . . . . . . . . . . . . . 2-22 Figure 2-27. Color Upgrade Kit Connector Pin Alignment . . . . . . . . . . . . . . . . 2-23 Figure 2-28. Color Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 Figure 2-29. EPSON Micro Dot Printing Driver Waveform . . . . . . . . . . . . . . . . 2-24
List of Tables
Table 2-1. Table 2-2. Table 2-3. Table 2-4. Table 2-5. Table 2-6. Table 2-7. Table 2-8. Carriage Motor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Drive Terms (Carriage Drive Mechanism) . . . . . . . . . . . . . . . . . . . . 2-4 Paper Feed Motor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Drive Terms (Paper Feed Drive Mechanism) . . . . . . . . . . . . . . . . . . 2-5 Platen Gap Adjust Lever Positions . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 Pump Mechanism Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 DC Voltage Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Black Ink-Out Sensing Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Stylus 1500 Service Manual
Operating Principles
2.1 OVERVIEW
This section describes the operating principles of the Stylus 1500 printer mechanism and electrical circuits.
2.2 PRINTER MECHANISM OPERATING PRINCIPLES
2.2.1 Printing Operation Principles
This printer mechanism uses a drop-on-demand ink jet system similar to the one used on all other EPSON ink jet printers. However, the printhead in this system is completely redesigned to make it more compact and to ensure a high level of reliability. The printer has two printheads: monochrome (black ink) and color (yellow, cyan, and magenta ink).
1. Monochrome Printhead
The figure below shows the structure of the monochrome printhead, which consists of the nozzle, nozzle plate, piezo elements, cavities, and printhead driver board.
For Ink Cartridge Printhead Driver Board
Nozzle Plate
Pi ez o Cavity Nozzle
Figure 2-1. Black Printhead Structure
2. Color Printhead
The figure below shows the structure of the color printhead. Its structure is different from the monochrome printhead. The color printhead consists of the nozzle plates, two rows of nozzles, piezo elements, and cavities for each of the three colors.
Printhead Driver Board For Cartridge
Nozzle Plate
Piezo
Cavity
Nozzle
Figure 2-2. Color Printhead Structure
Rev. A
2-1
Operating Principles
The printhead operates in one of two states to eject ink from each nozzle: t
Stylus 1500 Service Manual
Normal state No electrical charge is applied to the piezoelectric element attached to the back of the cavity, and pressure inside the cavity is kept at a constant level. Ejecting state The head data signal is applied to a specific nozzle control line to select the active nozzle for printing, and the piezoelectric element is gradually charged by the drive voltage. Charging the piezoelectric element bends the vibration plate to compress the cavity. Ink is then ejected from the nozzle.
Piezo Vibration Plate
t
Cavity Nozzle
Normal State
Cavity
Pie zo Vibration Plate
Ejecting State
Figure 2-3. Printing Operation States
When the ink charge or printhead cleaning operation is performed, ink in the cavity is vacuumed out with a pump mechanism. During printing, the ink is simultaneously supplied from the ink cartridge and ejected from the nozzle, depending on changes in the volume of the cavity. A thermistor is attached to the side of the black ink printhead driver board to monitor the temperature, because the viscosity of the ink varies depending on the temperature. The detected temperature level is fed back to the printhead driver voltage control circuit to change the time of the Tc pulse.
3. EPSON Micro Dot Printing Mode
The Stylus 1500 has a special black ink printing mode called EPSON Micro Dot Printing Mode. This mode can be selected when using a special paper type (such as glossy or transparency). Selecting this printing mode via the printer driver can improve output quality because it eliminates banding that can sometimes occur in normal mode. In normal dot printing mode, the print dot consists of two ink dots combined into a single dot. In EPSON Micro Dot Printing Mode, the print dot consists of a single ink dot only. Using this mode, the ink dot size is smaller than the normal dot and the graded representation is larger than normal dot printing. This mode is effective for 720 dpi printing on normal paper.
2-2
Rev. A
Stylus 1500 Service Manual
Operating Principles
2.2.2 Printer Mechanism
The Stylus 1500 printer mechanism is composed of the printhead unit; paper feed, carriage drive, pump, and push tractor feed mechanisms; and various sensors. The figure below shows a functional block diagram of the printer mechanism. Depending on the position of the carriage unit, the paper feed motor torque is transmitted to the paper feed, auto sheet feeding, push tractor feed, or pump mechanisms via a disengage mechanism.
Release Lever
Disengage Mechanism
Push Tractor Mechanism
Paper Feed Motor
Paper Feed Mechanism
Auto Sheet Feeder M ec ha ni s m Pump Unit Mechanism
Carriage Motor
Carriage Unit
Black
Color
Figure 2-4. Printer Mechanism Block Diagram
Rev. A
2-3
Operating Principles
Stylus 1500 Service Manual
2.2.3 Carriage Drive Mechanism
The timing belt attached to the base of the carriage unit is driven by the carriage motor, causing the carriage unit to move along the carriage guide shaft from left to right or vice versa. The carriage drive motor in this printer is a 4-phase, 96-pole, hybrid-type stepping motor, allowing the printer to stop the carriage or change the carriage movement at any position. The carriage position is recognized by the home position (HP) sensor, and position information is fed back to the CPU. This carriage motor is driven by the SLA7043M motor driver IC.
Table 2-1. Carriage Motor Specifications
Item Motor type Drive voltage Coil resistance Drive frequency Excitation mode Minimum step Description 4-phase / 96-pole hybrid-type stepping motor +42 VDC ± 5% 5 ±7% 480 - 9600 Hz Constant current unipolar drive t 0.026 mm (at 2W1-2 phase) t 0.106 mm (at 1-2 phase)
Table 2-2. Drive Terms (Carriage Drive Mechanism)
Print Mode ^ Draft (black) 400 Draft (color) LQ SLQ 200 100 Current Value (A / Phase) Acceleration 1/2 0.8 / 0.8 0.9 / 0.9 0.9 / 0.9 0.9 / 0.9 0.7 0.6
CR Motor
Print Speed (cps)
+ Rush (before/after) 0.5 / 0.5 ^
Constant
Deceleration 1/2 0.96 / 0.96 0.8 / 0.8 0.8 / 0.8
0.7
0.5 / 0.5 0.5 / 0.5
Drive Pulley
Carriage Unit
Timing Belt
Driven Pulley
HP Sensor
Eject Paper Frame CR Guide Shaft
Figure 2-5. Carriage Movement Mechanism
2-4 Rev. A
Stylus 1500 Service Manual
Operating Principles
2.2.4 Paper Feed Mechanism
This printer's paper feed mechanism consists of the built-in ASF (auto sheet feeder), push tractor, PF (paper feed) motor, front/rear PE (paper end) sensors, PF roller, eject roller unit, and disengage mechanism. The PF motor is a 4-phase, 48-pole, PM-type stepping motor that directly drives the paper feed mechanism (for paper advancing and paper pickup). This motor also drives the pump mechanism, but only when the printer is in the cleaning state. The paper feed mechanism is driven using a 1-2 phase drive method, except in the paper feed drive sequence (W1-2 phase). The paper feed mechanism is illustrated in Figure 2-6. The disengage mechanism switches the PF motor torque between the PF drive and pump drive via the carriage unit stop positions. The PF motor torque is transmitted to the PF roller via the PF motor pinion, disengage mechanism, and gear train. The torque is then separated for each of the two directions of the PF roller. One direction of torque transmission is used to drive the paper-ejecting mechanism via the gear train of the upper paper guide assembly. The other direction is used to drive the push tractor or ASF mechanism.
Table 2-3. Paper Feed Motor Specifications
Item Motor type Drive voltage Coil resistance Drive frequency Excitation mode Minimum step Description 4-phase, 96-pole, HB-type +42 VDC ± 5% 10 ± 10% 300 - 2160 Hz u Constant current bipolar drive u Paper feed / pump drive: 2-2 phase, W1-2 phase 1/720" (2-2 phase)
Table 2-4. Drive Terms (Paper Feed Mechanism)
Mode Frequency (Hz) ^ Current Value (A / Phase) Acceleration W1-2 / 2-2 Phase 0.9 / 0.9 0.9 / 0.9 -- / 0.9 --/-- Deceleration W1-2 / 2-2 Phase 0.75 / 0.75 0.75 / 0.75 0.9 / -- --/-- + Rush (before / after) 0.6 / 0.6 0.6 / 0.6 0.75 / 0.75 0.75 / 0.75
Constant
Paper loading (ASF) Paper feed Pump drive Pump drive (lower speed)
2160 2160 700 300
0.9 0.9 0.9 0.9
Note:
Hold current is 0.6 A.
Rev. A
2-5
Operating Principles
Release Gear PF Motor PF Motor Pinion Gear Disengage Gear To Tractor To A SF
Stylus 1500 Service Manual
ASF Tra nsmission Ge ar
PF Roller
Paper Eject Roller
Pu mp Un it
Eject Roller Unit
Eject Paper Shaft
Figure 2-6. Paper Feed Mechanism
2.2.4.1 Auto Sheet Feeder Mechanism
The PF motor torque is transmitted to the ASF pickup rollers via a planetary gear in the disengage mechanism. The pickup roller shaft has two arms on each side. The arms engage the paper support to cause the paper surface to contact the pickup rollers. The one-way clutch makes the rollers rotate in one direction for paper pickup. When not in paper pickup motion, the planetary gear does not transmit torque to the pickup roller shaft. After picking up paper, the planetary gear is released from the ASF mechanism. The torque of the PF motor is then transmitted to the paper feed mechanism.
One Way Clutch
Pinion Gear Disengage Gear
PF Motor
ASF Me chan ism
Pickup Roller
Paper
ASF Transmission Gear PE Sensor Paper Support PF Roller
Figure 2-7. ASF Mechanism
2-6
Rev. A
Stylus 1500 Service Manual
Operating Principles
2.2.4.2 Push Tractor Mechanism
The release gear of the push tractor is located on the left side of the printer mechanism. By operating the release lever, the release gear is engaged between the PF roller gear and the push tractor gear. The release gear transmits the PF motor torque from the PF roller to the push tractor. Continuous paper can then be fed into the printer.
Release Lever
Release Gear PF Motor
Rear PE Sen so r
PF Motor Pinion Gear
PF Roller
Dis e ng a ge Ge a r
Figure 2-8. Tractor Paper Advance Mechanism
2.2.4.3 Manual Feed Mechanism
With the release lever moved to friction feed mode and a sheet inserted in the rear paper slot, the printer switches to manual paper feed mode. In this mode, a single sheet can be fed from the rear paper slot even if there is paper in ASF. This mode therefore allows the use of normal paper in the ASF and special paper (such as glossy or transparency paper recommended for single-sheet feeding) in the rear slot at the same time.
Rev. A
2-7
Operating Principles
Stylus 1500 Service Manual
2.2.5 Platen Gap Adjust Mechanism
The platen gap adjust lever, attached to the left upper side of the printer cover, should be set to the appropriate position for the paper thickness. The platen gap adjust mechanism consists of the platen gap adjust lever, carriage guide shaft, and two parallelism adjust bushings. Switching the lever between positions 0 and + rotates the carriage guide shaft toward the front or rear. The bushings have an eccentricity toward the center of the carriage guide shaft, and the platen gap is changed from wide to narrow or vice versa.
Table 2-5. Platen Gap Adjust Lever Positions
Paper Type Cut sheet Transparency Index card Continuous paper Envelope Lever Position Platen Gap Adjustment Value
0
± 0 mm + 0.7 mm
+
Parallelism Adjust Bushing
Platen Gap Adjust Lever
Printhead
Platen Surface
Eccentricity
CR Guide Shaft
Figure 2-9. Platen Gap Adjust Mechanism
2-8
Rev. A
Stylus 1500 Service Manual
Operating Principles
2.2.6 Ink System
This printer's ink system is composed of the following mechanisms: u u u u u Ink cartridge Pump mechanism Cap mechanism Waste ink drain tank Wiping mechanism
The figure below shows a diagram of the ink system.
Black Ink Cartridge
Color Ink Cartridge (Option) Head Cleaner PF Motor
Clutch Unit
Disengage Gear
Air Valve
Pu mp 1
Pu mp Un it Gear Train
Pu mp 2
Waste Ink Drain Tank
Figure 2-10. Ink System Block Diagram
Rev. A
2-9
Operating Principles
Stylus 1500 Service Manual
2.2.7 Pump Mechanism
The paper feed motor drives the pump mechanism when the transmission gear moves to the position where the motor engages the pump mechanism gear trains, when the carriage unit is at the ink system home position. The release cam set is used to engage the pump mechanism (Figure 2-11) and disengage it (Figure 2-13) to switch to paper feeding (Figure 2-14). Figure 2-12 shows a block diagram of the pump mechanism. Pump system operation depends on the rotational direction of the paper feed motor, as shown in Table 2-6.
1. Switching to the Pump Function
Disengage Mechanism
Carriage Unit Switch Lever
Release Lever
Release Cam Set Lever
ASF Transmission Set Lever
Carriage Unit Switch Lever Release Cam Set Lever
Disengage Mechanism
Release Cam
Disengage Ge ar
Direction of Carriage Transfer
Direction of Release Cam Transfer
Compression Spring
Figure 2-11. Release Cam Set
Carriage Unit
PF Motor Pinion Gear PF Mo to r
Switch Lever Release Cam
Disengage Gear
PF Roller
Pump Unit
Figure 2-12. Pump Mechanism Function
2-10 Rev. A
Stylus 1500 Service Manual
Operating Principles
2. Resetting from the Pump Function
Carriage Unit Switching Lever Disengage Mechanism Switching Lever Path
Release Cam Lever
Release Cam
Figure 2-13. Release Cam Reset
Carriage Unit PF Motor Pinion Gear
PF Motor Switch Lever
Re lease Ca m
Disengage Gear
PF Ro lle r
Pump Unit
Figure 2-14. Paper Feed Mechanism Function
Rev. A
2-11
Operating Principles
Stylus 1500 Service Manual
3. Pump Operation
The pump draws ink from the printhead nozzles and drains it into the waste ink drain tank to eliminate dust or bubbles in the nozzles. The figure below illustrates pump operation. When the paper feed drive motor rotates CCW (backward), the color pulleys in the wheel pump unit rotate in the direction of the arrow while squeezing the ink tube to push the ink out to the waste ink drain tank. When the motor rotates CW (forward), the black pulleys in the wheel pump unit rotate in the direction of the arrow while squeezing the ink tube to push the ink out to the waste ink drain tank.
Table 2-6. Pump Mechanism Operation
PF Motor Rotational Direction Clockwise (CW) forward rotation ^ Counterclockwise (CCW) backward rotation ^ u u ^ u u ^ Color ink absorption Wiper set Operation Black ink absorption Wiper reset
Ink Tube
Ink Draining
Ink Draining
V a c uu m in g V a c u u m in g
Pump Motor (CCW): Black Pumping
Pump Motor (CW): Color Pumping
No Ink Draining
No Ink Draining
No Vacuuming
No Vacuuming
Pump Motor (CW): Black No Pumping
Pump Motor (CCW): Color No Pumping
Note: CW = Clockwise; CCW = Counterclockwise
Figure 2-15. Pump Ope