Epson Stylus Pro 9500 Engine User manual

EPSONStylusPro9500
B0 Wide-Format Professional Inkjet Printer
SEIJ00005
®
Service Manual
Service ManualService Manual
Service Manual

EPSON Stylus Pro 9500 Revision A
2
NOTE:
The contents of this book may change at anytime without notice.
No patent liability is assumed with respect to the use of information contained herein.
SEIKO EPSON CORPORATION assumes no liability for problems or damages resulting from the use of the information contained
herein.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.
Other product names used herein are for identification purposes only and may be trademarks of their respective owners. EPSON
disclaims any and all rights in those marks.
Copyright 2000 SEIKO EPSON CORPORATION.

EPSON Stylus Pro 9500 Revision A
3
PRECAUTIONS
There are cautionary notes throughout the text to help you avoid personal injury or equipment damage.
Always observe the measures listed below when performing repair or maintenance procedures.
WARNING
1. Always disconnect the product from both the power source and host computer before performing any maintenance or repair procedure.
2. No work should be performed on the unit by persons unfamiliar with basic safety measures dictated for all electronics technicians in their line of
work.
3. In performing testing described in this manual, do not connect the unit to a power source until instructed to do so. When the power supply cable
must be connected, use extreme caution in working on the power supply and other electronic components.
CAUTION
1. Repairs on EPSON products should be performed only by an EPSON-certified repair technician.
2. Make certain that the source voltage is the same as the rated voltage listed on the serial number/rating plate. If the EPSON product has a primary
AC rating different from the available power source, do not connect it to the power source.
3. Always verify that the EPSON product has been disconnected from the power source before removing or replacing printed circuit boards and/or
individual chips.
4. To protect sensitive microprocessors and circuitry, use static discharge equipment, such as anti-static wrist straps, when accessing internal
components.
5. Replace malfunctioning components only with those components recommended by the manufacturer; introduction of second-source ICs or other
nonapproved components may damage the product and void any applicable EPSON warranty.
W ARNING
Signals a precaution which, if ignored, could result
in serious or fatal personal injury. Great caution
should be exercised in performing procedures
preceded by a WARNING heading.
CAUTION
Signals a precaution which, if ignored, could result
in damage to equipment.

EPSON Stylus Pro 9500 Revision A
4
Revision Status
Revision Issued Date Description
A 31 August 2000 First Established Edition

PRODUCT DESCRIPTION
Features ......................................................................................................... 7
Professional Color Printing Features......................................................... 7
Consumable Products & Options.............................................................. 8
SPECIFICATIONS.......................................................................................... 9
Interfaces................................................................................................. 18
Initialization.............................................................................................. 23
Control Panel................................................................................................ 24
Normal Mode Panel Display.................................................................... 27
Control Panel Settings............................................................................. 28
Maintenance Call..................................................................................... 34
Service Errors.......................................................................................... 35
Service Related Printer Settings ............................................................. 37
Firmware Update..................................................................................... 41
Jumper Settings ...................................................................................... 42
OPERATING PRINCIPLES
Component List & Illustrations...................................................................... 44
Print Mechanism Components................................................................ 44
Summary of Control Circuit Operations................................................... 64
TROUBLESHOOTING
Outline.......................................................................................................... 70
Test Points .............................................................................................. 70
General Errors......................................................................................... 75
DISASSEMBLY & ASSEMBLY
Summary ...................................................................................................... 83
Warnings ................................................................................................. 83
Tools........................................................................................................ 84
Screw List................................................................................................ 84
Disassembly Flow......................................................................................... 85
Removing the Housing............................................................................ 86
Circuit Board Removal ............................................................................ 93
Printer Mechanism Disassembly............................................................. 96
Conversion Kit...................................................................................... 122
ADJUSTMENT
Summary.................................................................................................... 156
Caution.................................................................................................. 156
Adjustment Tools .................................................................................. 156
Adjustment Items .................................................................................. 158
Adjustment Steps ....................................................................................... 161
Parameter Backup ................................................................................ 161
Firmware Update................................................................................... 164
Self-Diagnostics .................................................................................... 166
Adjustment Menu.................................................................................. 168
Test Menu ............................................................................................. 189
Cleaning menu...................................................................................... 198
Parameter menu ................................................................................... 198
Maintenance Mode................................................................................ 200
Mechanism Adjustment......................................................................... 203
Dip SW setting ...................................................................................... 218
MAINTENANCE & SETUP
General Maintenance Issues...................................................................... 220
Periodic Maintenance Items.................................................................. 221
Product Life Information........................................................................ 222
Important Maintenance Items During Service Operations .................... 222
Lubrication............................................................................................. 223
Unpacking and Installing............................................................................ 223
The Packaging ...................................................................................... 223
Contents of the Packaging.................................................................... 224
Unpacking and Assembling................................................................... 225
APPENDIX
Wiring Diagrams......................................................................................... 233
Connector Pin Assignments....................................................................... 235
C277MAIN Board.................................................................................. 235
Parts List .................................................................................................... 239
Exploded view Diagram.............................................................................. 248
Component Layout..................................................................................... 262
Circuit Diagrams......................................................................................... 264

CHAPTER
PRODUCTDESCRIPTION

EPSON Stylus Pro 9500 Revision A
Product Description Features 7
1.1 Features
The EPSON Stylus Pro 9500 is an ultra-wide, 6-color ink jet printer with
professional color output. It has the same printheads as the EPSON Stylus
Color 9000. The EPSON Stylus Pro 9500 provides the following major features
and more.
1.1.1 Professional Color Printing Features
oLarge-size/poster printing
up to B0-wide paper (1118 cm/44 inches) including print-registration marks
oExcellent Photo-quality printing
1440 (H) x 720 (V) dpi combined with EPSON’s Microdot printing
oHigh-speed printing
n64 nozzles per color (same printhead as the EPSON Stylus Pro 9000)
nThe RISC-CPU and high-speed color raster ASIC quickly process
detailed print data
nA0/Medium Gloss Paper: Approx.17 min.(720x720dpi /Fast)
A0/Medium Gloss Paper: Approx.25 min.(720x720dpi /Beautiful)
A0/Medium Gloss Paper: Approx.50 min.(1440x720dpi /Highly detailed)
oLow running cost
Six separate ink cartridges so you only have to replace the empty ink
cartridge (each cartridge holds 220 ml)
oWide compatibility
The following interface alternatives are available:
nIEEE-1284 bidirectional parallel interface (supports ECP mode)
nMacintosh serial interface (approx. 1.8Mbps)
nOne Type-B expansion slot for an optional interface (x1)
oUser-friendly features:
nTwo roll holders for easy switching between paper types
nStandard roll-paper cutter
nAuto Loading (Cut sheet)
nOptional roll-paper take-up reel for automatically winding up your long
printouts

EPSON Stylus Pro 9500 Revision A
Product Description Features 8
1.1.2 Consumable Products & Options
The following table lists the consumable items and options available for use
with the EPSON Stylus Pro 9500.
Note *: Two rolls can be installed at the same time.
Note **: Can only be installed in the upper spindle holder.
Note 3: These papers can be used in the Stylus Pro 9000 also.
Table 1-1. Consumable Products & Available Options
Name Code Product
Doubleweight Matte
Paper
S041385
S041386
S041387
24in. wide / 25m long
36in. wide / 25m long
44in. wide / 25m long
Glossy Paper - Photo
Weight S041388
S041389 22in. wide / 20m long 44in. wide / 20m long
Premium Glossy Photo
Paper
S041390
S041391
S041392
24in. wide / 30.5m long
36in. wide / 30.5m long
44in. wide / 30.5m long
Premium Semigloss
Photo Paper
S041393
S041394
S041395
24in. wide / 30.5m long
36in. wide / 30.5m long
44in. wide / 30.5m long
Watercolor Paper -
Radiant White
S041396
S041397
S041398
S041352
S041351
24in. wide / 18m long
36in. wide / 18m long
44in. wide / 18m long
A3 Wide / B
A3 Wide / B
Glossy Film S041314
S041313
S041312
610mm wide / 20m long
914mm wide / 20m long
1118mm wide / 20m long
Synthetic Paper S041399 S041400
S041401
24in. wide / 45m long
36in. wide / 45m long
44in. wide / 45m long
Adhesive Synthetic
Paper
S041402
S041403
S041404
24in. wide / 30m long
36in. wide / 30m long
44in. wide / 30m long
Rip Station 5100 PS
Server Series EAI - C850092 Other - C850093 Fiery Adobe® PostScript® 3™ Server
Multi-protocol Ethernet
interface card C82362¬Type-B 10Base-T
100Mbps Multi-protocol
Ethernet interface card C82363¬Type-B 100Base-T
Table 1-1. Consumable Products & Available Options (continued)
Name Code Product

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 9
1.2 SPECIFICATIONS
PRINT SPECIFICATIONS
Print method: On-demand MACH (Multi-layer Actuator Head) ink
jet E-MACH type
Nozzle configuration: Black: 64 nozzles
Color: 320 nozzles/64 nozzles for each color (Yellow,
Magenta, Cyan, Light Magenta, and Light Cyan)
Print direction: Bi-directional with logic seeking
(high-speed return and skip only)
Print speed: See the following table:
n<Character mode>
Character Quality: High quality
Character Pitch: 10 cpi
Printable Area: 437 columns
Print Speed: 240 cps
n<Graphic mode>
See the table below.
Table 1-2. Print Speed by Print Mode
Control code: ESC/P Raster (commands are not open to public)
Character Specifications:
nCharacter Code
PC 850 (Multilingual)
PC437 (US, Standard Europe)
nType Faces
Bitmap LQ font: EPSON Courier IO CPI
PAPER-FEED SPECIFICATIONS
Feeding method: Friction feed
Line spacing: 1/6 or 1/720” programmable
Paper loading: Roll paper (two 2-inch rolls can be loaded at the
same time)
Single sheets loaded one at a time
Paper volume: 2” core roll paper = diameter of paper wound on roll
of less than 103mm (4.05”)
3” core roll paper = diameter of paper wound on roll
of less than 150mm (5.9”)
Single sheets = one sheet at a time
Feed speed: 200 ± 10 ms (when feeding at 1/6”)
2.5”/second (when continuously feeding)
Table 1-2.
Horizontal
Resolution Printable Area Printable Dot Count Print Speed
360 1112mm 15762 241 IPS/FOL
720 1112mm 31524 33.31 IPS/FOL
33.31 IPS/4pass
1440 1112mm 63048 24IPS/FOL
33.31 IPS/4pass

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 10
PAPER SPECIFICATIONS
Size, roll paper {Minimum paper requirements}
Paper meeting the requirements described below
can be used with this printer, but neither the feeding
nor printout quality is guaranteed.
•Paper Size = Width 297~1118mm
(8.27~44.02”)
Length 720mm~45m
(28.35~1771.65”)
•Roll Size = 2” or 3” core
paper thickness = 103mm or less (4.05”)
(two 2” rolls)
150mm or less (5.9”)
(one 3” roll)
•Paper Thickness = 0.08~0.5mm (0.003~0.019”)
*1): There should be no wrinkles, fuzz, tearing or
folding, of the paper, etc.
* 2): The exclusive option (3” roll paper spindle)
should be used when using 3” core roll paper.
{Normal paper}
For paper meeting the following requirements, the
feeding operation only is guaranteed.
•Paper Size = Width 297~1118mm
(8.27~44.02”)
Length 720mm~45m
(28.35~1771.65”)
•Roll Size = 2” or 3” spindle
paper thickness = 103mm or less (4.05”)
(two 2” rolls)
150mm or less (5.9”)
(one 3” roll)
•Paper Thickness = 0.08~0.11mm (0.003~0.0043”)
•Paper Weight = 64~90gf/m2 (17~24 lb.s)
•Paper Quality = Normal paper, recycled paper
*1: Use at normal room temperature
(15~25°C (59~77°F)
40~60% humidity)
*2: The printer exerts between 300~500gf to peel
off the rear edge of roll paper from the core
*3: The exclusive option (3” roll paper spindle) is
necessary when using 3” core roll paper.
*4: This product should be used in a place with a
normal room temperature environment
(Temperature: 15~25°C, Relative humidity:
40~60%)
*5: The guaranteed printable area for roll paper is
from the core to the point where it is cut off.
(Reference: The remaining paper length when the
paper comes off the roll is approximately 400 mm for
the upper holder and approximately 300 mm for the
lower holder.
{Special paper}
For special paper meeting the following
requirements, the feeding operation and print quality
are optimized.

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 11
*1):There should be no wrinkles, fuzz, tearing or
folding, of the paper, etc.
*2):This product should be used in a place with a
normal room temperature environment
(Temperature: 15~25°C, Relative humidity:
40~60%)
* 3):The guaranteed printable area for roll paper is
from the core to the point where it is cut off.
(Reference: The remaining paper length when the
paper comes off the roll is
Approximately 400 mm for the upper holder and Approximately 300 mm for the
lower holder.
Table 1-3. Special Paper Specifications
Paper Code Paper Size Roll Size
Doubleweight
Matte Paper
S041385
S041386
S041387
24” x 25m
36” x 25m
44” x 25m
2” core/ paper thickness
(radius) of 103mm or less
Glossy Paper -
Photo Weight S041388
S041389 22” x 20m
44” x 20m
Premium Glossy
Photo Paper
S041390
S041391
S041392
24” x 30.5m
36” x 30.5m
44” x 30.5m
Premium
Semigloss Photo
Paper
S041393
S041394
S041395
24” x 30.5m
36” x 30.5m
44” x 30.5m
Watercolor Paper
- Radiant White
S041396
S041397
S041398
24” x 18m
36” x 18m
44” x 18m
Glossy Film
S041314
S041313
S041312
610mm x 20m
914mm x 20m
1118mm x
20m
Synthetic Paper S041399 S041400
S041401
24” x 45m
36” x 45m
44” x 45m
Adhesive
Synthetic Paper
S041402
S041403
S041404
24” x 30m
36” x 30m
44” x 30m

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 12
CUT SHEET PAPER SPECIFICATIONS
Loading of the following papers into this printer is possible, but for papers
other than the following plain paper and exclusive paper, feed through
characteristics and print quality are not guaranteed.
Paper Thickness: 420~728mm (16.54~28.66”) long
paper = 0.08~1.5mm
(0.003~0.059”)
728~1580mm (28.66~62.2”) long
paper = 0.08~0.5mm
(0.003~0.019”)
{Normal paper}
For paper meeting the following requirements, only
the feeding operation is guaranteed.
• Paper Thickness = 0.08~0.11mm (0.003~0.0043”)
• Paper Weight = 64~90gf/m2 (17~24 lb.s)
• Paper Quality: Normal, recycled paper
*1:Load short edge first (portrait)
[Exclusive Papers]
The following genuine exclusive papers can be used.
*1: Guaranteed for Uni-D printing. The paper should be loaded longitudinally.
*2: There should be no wrinkles, fuzz, tearing or folding, of the paper, etc.
*3: This product should be used in a place with a normal room temperature environment
(Temperature: 15~25°C, Relative humidity: 40~60%).
Table 1-4. Usable Single Sheet Paper Specifications
Size Dimensions
(W x H) Size Dimensions (W x H)
Super B0 1118 x 1580mm A2 329 x 483mm
B0 1030 x 1456mm Super A3/B 297 x 483mm
B1 728 x 1030mm A3 297 x 420mm
B2 515 x 728mm ANSI E 34 x 44”
B3 364 x 515mm ANSI D 22 x 34”
Super A0 914 x 1292mm ANSI C 17 x 22”
A0 841 x 1189mm ANSI B 11 x 17”
A1 594 x 841mm
Table 1-5. Usable Single Sheet Paper Specifications
Size Dimensions
(W x H) Size Dimensions (W x H)
Super B0 1118 x 1580mm A2 329 x 483mm
B0 1030 x 1456mm Super A3 /B 297 x 420mm
B1 728 x 1030mm A3 22 x 36”
B2 515 x 728mm ANSI E 20 x 24”
B3 364 x 515mm ANSI D 18 x 22”
Super A0 914 x 1292mm ANSI C 34 x 44”
A0 841 x 1189mm ANSI B 22 x 34”
A1 594 x 841mm 17 x 22”
A2 420 x 594mm 11 x 17”
Table 1-6. Specifications of Genuine Exclusive Papers
Paper Name Dimensions (H x W) MC Glossy Paper *1 MC Imaging Paper
A3 297mm x 420mm ¡-
Super A3 329mm x 483mm ¡-

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 13
Printable area:See the following illustration and table for details.
Note 1): The printer detects the paper width when the paper is set. (The paper width is not
detected when the paper width detection setting is Off.)
Note 2): Any image that exceeds the detected paper width, or the printable area specified by the
paper size setting, is not printed. (When paper detection setting is OFF, the printer may
print on the platen.)
Note 3): The size of the margin of roll paper can be changed from the panel as shown below.
Top and Bottom: 15 mm Left and Right: 3 mm, Top, Bottom, Left and Right: 3 mm,
Top, Bottom, Left and Right: 15 mm.
Figure 1-1. Printable Area
Table 1-7. Printable Area
Heading Roll Paper Cut Sheets
PW (width) 297 ~ 1118mm
(8.27 ~ 44.02”) 297 ~ 1118mm (8.27 ~ 44.02”)
PL (length) 720mm ~ 45m
(8.27~1771.65”) 420~1580mm (16.54~62.2”)
LM (left margin) 3mm/15mm*
(0.12~0.59”) 3mm
TM (top) 3mm/15mm* 3mm
RM (right) 3mm/15mm* 3mm
BM (bottom) 3mm/15mm* 14mm
PL
TM
BM
LM
PW
RM
Printable Area
Paper
Feed

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 14
PAPER SET LEVER:
oLever Position = Up
The paper support is released and paper setting is possible.
oLever Position = Down
The paper is in a fixed position and is ready to print on.
During printing, it is impossible to change the position of the paper set
lever.
During printing, an error occurs if the paper set lever is raised.
ELECTRICAL SPECIFICATIONS
CONFORMITY/SAFETY APPROVALS
Safety Standards:
US Model UL 1950, CSA 22.2 No. 950
European Model EN60950 (VDE)
EMC:
US Model FCC part 15 subpart B class B
CSA C108.8 class B
European Model EN 55022 (CISPR Pub. 22) class B
EN 61000-3-2
EN 61000-3-3
EN 50082-1
IEC 801-2
IEC 801-3
IEC 801-4
Australian Model AS/NZS 3548 class B
International Energy Star Compliant
(EPA MOU2.1 Category Large Format Printer)
Rated voltage range AC100~240V
Input voltage range AC90~264V
Rated frequency range 50 to 60Hz
Input frequency range 49 to 61Hz
Rated current 100 V System = 1.0 A
200 V System = 0.5 A
Power consumption During operation = 100 W or less
During standby = 30 W or less
Insulation resistance 10MW or higher
(CD 500 V / Between AC line and chassis)
Dielectric strength AC 1.0 Kvrms / 1 min. or
AC 1.2 Kvrms / 1 sec. (between AC line and chassis)
Current leakage 0.25 mA or less

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 15
RELIABILITY
Service Life: [Body] 20,000 Page (A0)
[Print Heads] 2 billion dots/nozzle
[Cutter] Approx. 2,000 times (Super B0)
Replacement Parts Service Life:
After printing of approx. 6200 sheets (A0), the
following parts are subject to simultaneous service
replacement.
• Waste ink pad
• Pump assembly
• Cap assembly (New part)
• Flushing box R
• Flushing box L (New part)
• Cleaner blade
ENVIRONMENTAL SPECIFICATIONS
Temperature/Humidity: See the following table.
Notes:
1) When storing the printer, make sure the printheads are in the home, capped, position.
2) Before transporting the printer, remove the ink cartridges and turn the ink valves screws to
the closed position. Also make sure the printheads are in the home, capped, position. After
transporting the printer, install new ink cartridges.
3) When the temperature drops below -15°C (5°F), the ink in the cartridges and printheads
freezes. The ink thaws completely after three hours at 25°C (77°F).
CHECK
PO IN T
The above service replacement parts are available in
the following kit.
nName: “Maintenance Kit Sylus Pro 9500
nPart Code: 1058462
nThis maintenance kit is an exclusive kit for the
Sylus Pro 9500, and should not be used for the
Stylus Pro 9000.
Table 1-8. Temperature & Humidity
Condition Temperature Humidity Notes
Operating 15~35°C
(59~95°F) 30~80% • Less than a month at
40°C (104°F)
Less than 120 hours at
60°C (140°F)
• Without condensation
Storage -20~40°C
(-4~104°F) 20~85%
Transportation -20~60°C
(-4~140°F) 5-85%

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 16
Figure 1-2. Print Temperature and Humidity
Resistance to
Vibration & Shock: See the following table.
INK CARTRIDGE SPECIFICATIONS
Shape: Each ink cartridge is uniquely shaped so the
cartridges cannot be inserted in the wrong slots.
Ink colors: Black, Cyan, Magenta, Yellow, Light Cyan, Light
Magenta
Ink volume: 220 ± 5 ml
Ink avail. for printing: 190 ± 14ml
Print capacity: A0 = approx. 30 pages at 720dpi and 40% coverage
Dimensions: 25.1 x 260 x 105.3mm (WxDxH)
Weight: Approx. 370~385g (cartridge only)
Effective period: 2 years from production (in the sealed packaging)
plus time used (at room temp.)
Storage temperature: See the table below.
Table 1-9. Vibration & Shock Resistance
Condition Vibration
Resistance Shock Resistance Notes
Operating 0.15G
10~55Hz 1G less than 1ms X/Y/Z direction
Storage 0.50G
10~55Hz 2G less than 2ms
Temp.
(°C)
Humidity (%)
Table 1-10. Ink Cartridge (Environmental) Specifications
Situation Temperature Notes
Transporting -30~60°C
(-22~140°F) • Less than 120 hours at 60°C (140°F)
• Less than month at 40°C (104°F)
Storage -30~40°C
(-22~104°F) Less than a month at 40°C (104°F)
Installed -20~40°C
(-4~104°F) Less than a month at 40°C (104°F)

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 17
CONTROLLER SPECIFICATIONS
CPU: 32 bit RISC-CPU (SH7043) 33Mhz
ROM: [Program]
CPU Internal = 128KB ROM
External = 1MB (Flash ROM/4Mbit x 2)
[Font] not-installed
RAM: 18MB (fixed)
(16MB: SIMM/2MB: IC18,19)
Interface: [Standard]
IEEE1284 Bidirectional Parallel Interface
Macintosh Serial Interface
Type-B Card Slot (x1) for optional interface
PRINTER DIMENSIONS & WEIGHT
Dimensions: 1688 x 699 x 1259mm (WxDxH)
(66.46 x 27.52 x 49.57 inches)
Weight: 96Kg (211.91 lb.s)
Printer alone = 74Kg (163.32 lb.s)
Stand = 22Kg (48.59 lb.s)
Figure 1-3. Printer Dimensions
CHECK
PO IN T
The RAM installed in the form of a SIMM module is a
part of system memory and cannot be replaced (to
install a larger capacity SIMM) or removed. 1259mm
(49.57”)
1688mm
(66.46”)
699mm
(27.52”)

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 18
1.2.1 Interfaces
The EPSON Stylus Pro 9500 is equipped with parallel and Macintosh serial
interfaces and a card slot for an optional Type-B interface. This section
provides information on each interface.
PARALLEL INTERFACE
oParallel Interface [Compatibility Mode]
Transmission mode: 8-bit parallel, IEEE-1284 compatibility mode
Synchronization: By STROBE pulse
Handshaking: By BUSY and ACKNLG signal
Logic Level: TTL compatible level (IEEE-1284 Level 1 device)
Connector: 57-30360 (Amphenol) or equivalent 36-pin. The
interface cable length should be only long enough to
reach the shortest necessary distance.
Note:See the next page.
Table 1-11. Connector Pin Assignments - Forward Channel
Pin
No. Signal Name Return Pin In/ Out Functional Description
1STROBE 19 I Data reception pulse, 0.5uS or greater pulse width
required. Usual state is HIGH, and reads data after
going to LOW state.
2-9 DATA0~7 20-27 I
The DATA0 through DATA7 signals represent data bits
0 to7, respectively. Each signal is at high level when
data is logical 1 and low level when data is logical 0.
These signals are used to transfer the 1284 extensibility
request values to the printer.
10 ACKNLG 28 O When LOW the printer has finished preparing to receive
signals and can accept data. Pulse width is about 1uS or
3uS Printer clock signal.
11 BUSY 29 OHIGH means the printer cannot receive data. This
occurs when the printer is receiving data or when the
printer is in an error state.
12 PE 28 O HIGH means no paper is loaded. (LOW means an error.)
13 SLCT 28 OAlways HIGH. Pulled up to +5V via 1.0Kohm
14 AFXT 30 I Not used
15 NC Not connected
16 GND Ground for twisted pair return
17 Chassis Ground for frame/body
18 Logic H Pulled up to +5V via 3.9Kohm
19-30 GND Ground for twisted pair return
31 -INIT 30 I Pulse width of 50uS or more means LOW pulse, and the
falling edge of LOW signal causes the printer to initialize.
32 ERROR 29 OLOW means printer error
33 GND ---- ---- Ground for twisted pair return
34 NC ---- ---- Not connected
35 +5V ---- O HIGH during normal operation. Pulled up to +5V via
1.0Kohm
36 SLCTIN 30 INot used

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 19
Note 1: *1 The return side means the twisted pair return and is connected to the signal ground
level. Furthermore, when interfacing, a twisted pair cable should definitely be used for each
signal and the return side should definitely connected. Also, use of a shielded cable and
connection to the chassis ground of the center machine and the printer, respectively are
effective countermeasures against noise.
Note 2:All the interface conditions are TTL level standard conditions. The rise and fall time of each
signal is 0.2 _s or less.
Note 3:There must not be any data transfer with disregard of the /ACKNLG or BUSY signals. (Data
transfer to this printer must be performed after the ACKNLG level is confirmed or when
BUSY is in the “LOW” state.)
Note 4: A horizontal line above the signal name sows a LOW active signal.
oNibble Mode
Transmission mode: 8-bit Parallel
Synchronization: External Supply STROBE Pulse Signal
Handshaking: ACKNLG and BUSY Signal
Signal level: TTL level (IEEE-1284 level 1 device)
Connector: 57-30360 (Amphenol) or equivalent
Data transfer timing: Refer to IEEE-1284 specification
Data requests:When the printer receives the hexadecimal values 00H
or 04H, the printer responds in the following manner:
00H: The printer enters reverse channel mode, allowing
data to be sent to the host.
04H: The printer sends the device ID to the host; the
device ID consists of the following strings
device ID: <00H><4EH>
MFG: EPSON
CMD: ESCPL2, BDC
MDL: Stylus[SP]Pro[SP]9000;
CLS: PRINTER
DES: EPSON[SP]Stylus[SP]Pro[SP]9500
Note: [SP] equals space code 20H
Table 1-12. Parallel Interface Timing
Parameter Minimum Maximum
tsetup 500ns --
thold 500ns --
tstb 500ns --
tready 0--
tbusy -- 500ns
treply --
tack Typical 2us
Tnbusy 0--
tnext 0 --
Table 1-13. Connector Pin Assignments - Reverse Channel
Pin
No. Signal Name Return Pin In/ Out Functional Description
1 HostClk 19 I Host clock signal.
2-9 Data0-7 20-27 IEach signal is at high level when data is
logical 1 and low level when data is logical 0.
10 PeriphClk 28 O Printer side clock signal.
11 PeriphAck/
PtrBusy 29 OPrinter side BUSY signal and data bit 3/7
in the reverse channel.
12 AckData Req 28 O Acknowledge data request signal and
data bit 2/6 in the reverse channel.
13 Xflag 28 OX-flag signal and data bit 1/5 in the
reverse channel.
14 HostBusy 30 I Host computer side BUSY signal.
15 NC (Not used.)
16 GND Ground for twisted pair return.
17 Chassis GND Chassis Ground
18 Logic-H O +5 V pull-up at 3.9 K Ohm.
19-30 GND Ground for twisted pair return
31 /INIT 30 I (Not used.)
32 /DataAvail 29 OData Available signal and data bit 0/4 in
the reverse channel.
33 GND Ground for twisted pair return

EPSON Stylus Pro 9500 Revision A
Product Description SPECIFICATIONS 20
oECP Mode
Transmission mode: IEEE-1284 ECP mode
Synchronization: Refer to IEEE-1284 specification
Handshaking: Refer to IEEE-1284 specification
Signal level: TTL level IEEE-1284 level 1 device
Data transfer timing: Refer to IEEE-1284 specification
Data requests: When the printer receives the hexadecimal values 10H or
14H, the printer responds in the following manner:
10H: The printer enters reverse channel mode, allowing
data to be sent to the host.
14H: The printer sends the device ID to the host; the
device ID consists of the following strings:
device ID: <00H><4EH>
MFG: EPSON
CMD: ESCPL2, BDC
MDL: Stylus[SP]Pro[SP]9500
CLS: PRINTER
DES: EPSON[SP]Stylus[SP]Pro[SP]9500
Note: [SP] equals space code 20H
34 NC (Note used.)
35 +5V ---- O Normally HIGH state. +5 V pull-up at 1.0
K Ohm
36 1284-Active 30 I1284 Active signal.
Table 1-13. Connector Pin Assignments - Reverse Channel
Pin
No. Signal Name Return Pin In/ Out Functional Description
Table 1-14. Connector Pin Assignments - Reverse Channel
Pin
No. Signal Name Return Pin In/ Out Functional Description
1 HostClk 19 I Host clock signal.
2-9 Data0-7 20-27 IEach signal is at high level when data is
logical 1 and low level when data is logical 0.
10 PeriphClk 28 O Transmits data to the host computer
from the printer.
11 PeriphAck/
PtrBusy 29 O
The printer uses this signal for forward
direction flow control. Also, this signal
offers data bit 9, which is used to judge
whether information output in the
reverse direction data signals is
command information or data
information.
12 AckData Req 28 O The printer drives in Low and
acknowledges a nReverseRequest.
13 Xflag 28 OX-flag signal and data bit 1/5 in the
reverse channel.
14 HostBusy 30 I
The host uses this signal for reverse
direction flow control. Also, this signal
offers data bit 9, which is used to judge
whether information output in the
forward direction data signals is
command information or data
information.
15 NC - - (Not used.)
16 GND - - Ground for twisted pair return.
17 Chassis GND Chassis Ground
18 Logic-H - O Normally “HIGH” level. +5 V pull-up at
3.9 K Ohm
19-30 GND - - Ground for twisted pair return.
31 /INIT 30 I (Not used.)
32 /DataAvail 29 OThis signal is used to generate host
interrupts.