The EPSON FX-880 and EPSON FX-1180 are identical products, except for their width. To permit
printing on wider paper, the FX-1180 has a wider body than the FX-880, but is the same as t he
FX-880 in all other respects. Unless noted otherwise, all information and instructions in this
manual can be used to service either printer.
EPSON FX-880/FX-1180 Service Manualv
vi
EPSON FX-880/FX-1180 Service Manual
FCC COMPLIANCE STATEMENT
FOR AMERICAN USERS
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio and television reception. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio
and television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
WARNING
The connection of a non-shielded equipment interface cable to this equipment will invalidate the FCC Certification of this
device and may cause interference levels that exceed the limits established by the FCC for this equipment. It is the
responsibility of the user to obtain and use a shielded equipment interface cable with this device. If this equipment has
more than one interface connector, do not leave cables connected to unused interfaces.
Changes or modifications not expressly approved by the manufacturer could void the user's authority to operate the
printer.
FOR CANADIAN USERS
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le materiel brouilleur du
Canada.
COPYRIGHT NOTICE
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the written permission of Epson
America, Inc. No patent liability is assumed with respect to use of the information contained herein. Neither is any
liability assumed for damages resulting from the use of the information contained herein. W hile every precaution has
been taken in the preparation of this book, Epson America, Inc., assumes no responsibility for errors and omissions.
Neither Epson America, Inc., nor its affiliates shall be liable to the purchaser of this product or third parties for damages,
losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of this
product or unauthorized modifications, repairs, or alterations to this product.
Epson America, Inc., shall not be liable against any damages or problems arising from the use of any options or any
consumable products other than those designated as Original EPSON Products or EPSON-Approved Products by Seiko
Epson Corporation.
EPSON FX-880/FX-1180 Service Manualvii
TRADEMARKS
EPSON and ESC/P are registered trademarks and ESC/P 2, EPSON FX-880, and EPSON FX-1180 are
trademarks of Seiko Epson Corporation. Epson Connection is a service mark of Epson America, Inc.
General Notice: Other product names used herein are for identification purposes only and may be trademarks of their
respective companies. EPSON disclaims any and all rights in those marks.
Precautionary notations throughout the text are categorized relative to:
1. personal injury.
2. damage to equipment.
WARNING
Signals a precaution which, if ignored, could result in serious or fatal personal injur y. 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.
Always observe the precautionary measures itemized below when performing repair/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 c onnect the unit to a power source until instructed
to do so. When the power s upply cable mus t be c onnec ted, use ex tr eme 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 s ame as the rated voltage lis ted on the serial num ber/rating
plate. If the EPSON product has a prim ary 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 f rom the power sour ce befor e r em oving or
replacing printed circuit boards and/or individual chips.
4. To protect sensitive µP chip and circuitry, use static discharge equipment, s uch as anti- static wris t 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 m ay damage the product and void
any applicable EPSON warranty.
Conditions Indicated by the LEDs and Beeper................................................................................1-28
Main Components.................................................................................................................................... 1-29
EPSON FX-880/FX-1180 Service Manual
1-i
Product Descriptions
1-ii
EPSON FX-880/FX-1180 Service Manual
Product Description
Features
The EPSON FX-880 and FX-1180 are small-footprint, 9-pin serial impact dot matrix printers. Except for
their width, the two printers are exactly the same. The FX-1180 has a wider carriage unit and paper
handling mechanism, and prints on wider paper than the FX-880.
The main features of the FX-880 and FX-1180 are:
Print SpeedHigh speed draft410 cps at 10 cpi
(max. 455 cps at 12 cpi)
Draft310 cps at 10 cpi
NLQ77 cps at 10 cpi
Barcode fonts:
EAN-13, EAN-8, Interleaved 2 of 5, UPC-A, UPC-E,
Code 39, Code 128, POSTNET
Notes:
*Additional tractor is required.
**Roll paper is not available on all models, and is not available in the U.S.
EPSON FX-880/FX-1180 Service Manual
1-1
Product Description
Character tablesStandard version 11 tables
NLSP version19 tables
Character sets12 international character sets and one legal character set
Input buffer32KB or 0KB (selectable in the default-setting mode or using the
EPSON Remote! utility with Windows 95)
Acoustic noiseApproximately 55 dB(A), ISO 7779 pattern
ReliabilityTotal print volume 6.5 million lines, except printhead
MTBF4000 power-on hours (POH) at 25% Duty-Cycle
Printhead life200 million strokes per wire
Ribbon life3 million characters (in Draft mode at 10 cpi with
approximately 14 dots per character)
InterfacesOne standard bidirectional, 8-bit, parallel interface with IEEE-1284
nibble mode support, and one optional Type B level 2 interface slot
Control codesESC/P and IBM 2380 Plus (for the FX-880) or 2381 Plus (for the
FX-1180) character emulation
Copy capability1 original + 5 copies
Figure 1-1. Exterior of FX-880
(FX-1180 similar but wider)
1-2
EPSON FX-880/FX-1180 Service Manual
Accessories
Product Description
Table 1-1. Items Included with the Printer
Enclosed itemQuantity
User’s guide1
Driver diskette1
Ribbon cartridge1
1-2. Consumables and Optional Units
Item
FX-1180FX-880
Ribbon cartridge87558750
High capacity cut sheet feeder (bin1)C806401C806381
Second bin cut sheet feeder(bin2)C806391C806371
Push/pull tractor unit1038519C800201
Roll paper holder83108310
Front paper guideC814031C814021
Front sheet guideC814011C814001
0KB type-B Serial interface cardC823051C823051
32KB type-B intelligent serial I/F cardC823071C823071
Coax type-B I/F cardC823141C823141
Twinax type-B I/F cardC823151C823151
Multi-protocol Ethernet type-B I/F cardC823572C823572
Bi-directional parallel type-B I/F cardC823452C823452
LocalTalk I/F cardC823121C823121
Part Number
EPSON FX-880/FX-1180 Service Manual
1-3
Product Description
Hardware Specifications
This section describes the hardware specifications of the FX-880 and FX-1180.
Printing Method
Printing method
Number of pins
Pin arrangement
Pin diameter
Print color
Print direction
Impact dot matrix
9 pins
9 × 1
0.0114 inch (0.29 mm)
Black
Bidirectional logic seeking when printing text and graphics.
Unidirectional text or graphics printing can be selected with
software commands.
Printing Specifications
Copy capability
Printing ModeCharacter PitchPrintable ColumnsPrint Speed (cps) at 10 cpi
1. Both printers can print a maximum of 455 cps at a pitch of 12 cpi.
2. If the power supply voltage drops below the lower limit, the printer stops until the voltage returns to the
normal range. The printer then resumes printing, but more slowly than before.
3. If the printhead temperature rises above the upper limit, the printer stops until the printhead cools
down to the normal temperature. The printer then resumes printing, but more slowly than before.
4. When the platen gap lever is set at position 2 or higher, the printer goes into copy mode. In copy
mode, the print speed slows to prevent the dot wires from getting stuck in the thicker paper as the
printhead travels across the page. Note that “copy mode,” as used in this manual, does not refer to
overstrike, a function not supported by the FX-880 or FX-1180 printer.
1 original + 5 copies
Table 1-3. Print Speed and Printable Columns
FX-1180FX-880NormalCopy
1-4
EPSON FX-880/FX-1180 Service Manual
Product Description
Table 1-4. Print Resolution
Print ModeHorizontal densityVertical density Adjacent dot printed?
High-speed draft90 dpi72 dpiNo
Draft120 dpi72 dpiNo
NLQ240 dpi144 dpiNo
Bit image60, 72, 80, 90 or
72 dpiYes
120 dpi
120 or 240 dpi72 dpiNo
Control codesESC/P and IBM 2380/2381 Plus character emulation.
Paper Handling Specifications
Paper feed methodsFriction feed (front, rear)
Push tractor (front, rear)
Pull tractor (front, rear, bottom)
Push and pull tractor (additional tractor required)
CSF bin1/bin2 (optional)
Roll paper holder (optional)
Paper pathManual InsertionFront in, front out
CSFRear in, front out
Tractor Rear, front, or bottom in, front out
Paper capacitySingle-bin cut-sheet feeder:
up to 50 sheets of 22 lb (80 g/m
2
) paper
Note:
The total thickness of the paper stack can be up to 0.20 inches
(5 mm).
High-capacity cut-sheet feeder:
up to 150 sheets of 22 lb (82 g/m
2
) paper
up to 25 plain or bond envelopes
up to 30 airmail envelopes
Note:
The total thickness of the paper stack can be up to 0.59 inches
(15 mm).
Line spacing1/6 inch or programmable in increments of 1/216 inch
EPSON FX-880/FX-1180 Service Manual
1-5
Product Description
Feed speed
Table 1-5. Feed Speed
ModeType of FeedSpeed
Normal1/6 inch62 ms/line
Continuous5.0 inches/sec (0.127 m/sec)
Copy1/6 inch83 ms/line
Continuous3.1 inches/sec (0.078 m/sec)
Release leverSet the paper release lever using the following table.
Table 1-6. Paper Release Lever Position
Lever PositionPaper EntrancePaper Types
Single-sheet
position
Front push tractor
position
Rear push tractor
position
Pull tractor positionFrom front, rear, or bottom using top-
Paper thickness leverSet the paper thickness lever, as indicated in the following table.
Lever PositionPaper Thickness (inches)Paper Thickness (mm)
Front insertionCut sheet (single sheet and multi-part)
Card stock
CSF bin1Cut sheet (single sheet and multi-part)
Envelopes, card stock
CSF bin2Cut sheet (single sheet)
From rear using roll paper holderRoll paper
From front using front push tractor, or
using front push and pull tractors in
combination
From rear using rear push tractor, or rear
push and pull tractors in combination
This section describes the types of paper that can be used with this printer.
Cut Sheets
Table 1-8. Specifications for Cut Sheets (as single sheets of paper)
Product Description
Width
Length
FX-1180:
FX-880:
Front entry: 7.2 to 14.3 inches (182 to 364 m m )
5.8 to 16.5 inches (148 to 420 mm)
5.8 to 10.1 inches (148 to 257 mm)
Rear entry: 3.6 to 14.3 inches (92 to 364 mm )
Thickness
Weight
Quality
Note:
Printing on recycled paper or card stock is available only at normal temperatures and humidity.
Insertion
Width
Length*
Copies
Total
thickness
Weight
Quality
Joining
0.0025 to 0.0055 inches (0.065 to 0.14 mm)
14 to 24 lb (52 to 90 g/m
2
)
Plain or recycled paper; neither curled, folded, nor cr umpled
Table 1-9. Specifications for Cut Sheets (as multi-part forms)
Front or rear entry
FX-1180:
FX-880:
5.8 to 16.5 inches (148 to 420 mm)
5.8 to 10.1 inches (148 to 257 mm)
7.2 to 14.3 inches (182 to 364 mm)
1 original + 5 copies
0.0047 to 0.018 inches (0.12 to 0.46 mm)
12 to 15 lb (40 to 58 g/m
2
)
Carbonless multi-part for m s, neither curled, folded, nor crum pled
Apply glue in a straight line at the top or at one side of a form.
Notes:
1. * Maximum length, including perforation area. Length excluding perforation area is 11.7".
2. Do not use CSF bin 2 when printing a multi-part form.
A
B
A
EPSON FX-880/FX-1180 Service Manual
B
Figure 1-2. Margins for Cut Sheets
AThe minimum top and bottom margins are
0.17 inch (4.2 mm).
BThe minimum left and right margins are 0.12
inc h (3 mm).
The maximum printable width is 8 inches (203.2
mm) for the FX-880 and 13.6 inches (345.4 mm)
for the FX-1180.
1-7
Product Description
Envelopes
Table 1-10. Specifications for Envelopes
Envelope typeNo.6No.10
Width
Length
Insertion
Total thickness
Rear entry only
0.0063 to 0.020 inches (0.16 to 0.52 mm)
6.5 inches (165 mm)9.5 inches (241 mm)
3.6 inches (92 mm)4.1 inches (105 mm)
The variation in thickness in the print area, due to envelope construction,
Weight
Quality
must be within 0.0098 inches (0.25 mm).
12 to 24 lb (45 to 90 g/m
Airmail envelopes without glue on the flap, bond envelopes, and plain
2
)
envelopes.
Notes:
1. Printing on envelopes should be done only at normal temperatures and humidity.
2. Do not use CSF bin 2 when printing on envelopes.
3. Insert the longer side of the envelope horizontally.
A
B
Continuous Paper
Table 1-11. Specifications for Continuous Paper (single sheet and multi-part)
Insertion
Width
Length
Copies
Total thickness
Weight
Weight (multi-part)
Quality
Joining
AThe minimum top and bottom margins are 0.17 inch (4.2 mm).
BThe minimum left and right margins are 0.12 inch (3 mm).
B
Figure 1-3. Margins for Envelopes
Front entry, rear entry, bottom entry
FX-1180:
FX-880:
4 to 22 inches (101.6 to 558.8 mm)
1original + 5 copies
0.0025 to 0.018 inches (0.065 to 0.46 mm)
14 to 22 lb (52 to 82 g/m
12 to 15 lb (40 to 58 g/m
Plain paper, recycled paper, carbonless multi-part
Apply small dots of glue, or paper staple (crimp) both the right and left sides.
4 to 16 inches (101.6 to 406.4 mm)
4 to 10 inches (101.6 to 254 mm)
2
)
2
)
1-8
EPSON FX-880/FX-1180 Service Manual
Table 1-12. Specifications for Continuous Form Labels
Product Description
Insertion
Minimum label size
Front (push or pull tractor, but preferably pull) or bottom (pull tractor)
See the figure below:
2.5" (63.5 mm)
Label
15/16" (23.8 mm)
Corner Radius 0.1" (2.5 mm)
Figure 1-4. Label
Backing sheet width
FX-1180:4 to 16 inches (101.6 to 406.4 mm)
FX-880:4 to 10 inches (101.6 to 254.0 mm)
0.0028 to 0.0035 inches (0.07 to 0.09 mm)
14 to 22 lb (52 to 82 g/m
Plain paper; neither curled, folded, nor crumpled
B
AThe minimum top and bottom margins are 0.17 inch (4.2 mm).
2
)
A
Ribbon Cartridge
ItemSpecifications
TypeFabric
ColorBlack
Ribbon life3 million characters
B The minimum left and right margins are 0.12 inch (3 mm).
The maximum printable width is 8 inches (203.2 mm) for the
FX-880 and 13.6 inches (345.4 mm) for the FX-1180.
Figure 1-6. Margins for Roll Paper
Table 1-14. Statistics for the Ribbon
(in draft mode at 14 dots per character)
Input data buffer
0 Kb or 32 Kb
Note:
The size of the input data buffer depends on the printer’s default settings.
1-10
EPSON FX-880/FX-1180 Service Manual
Product Description
Electrical Specifications
Electrical specifications for the FX-880 and FX-1180 depend on both the model and the type of power
supply it contains:
Table 1-15. Electrical Specifications for the 120 V Version
ItemSpecification
Rated voltage120 VAC
Input voltage range103.5 to 132 VAC
Rated frequency range50 to 60 Hz
Input frequency range49.5 to 60.5 Hz
Rated current0.7 A (maximum 1.6 A, depending on the character type)
Power consumptionFX-1180:Approximately 36 W (ISO/IEC 10561 letter pattern)
FX-880:Approximately 34 W (ISO/IEC 10561 letter pattern)
ENERGY STAR Compliant
Insulation resistance
Dielectric strength1000 VAC rms 1 min or 1200 VAC rms 1 sec (between AC line and
10 MΩ minimum (between AC line and chassis)
chassis)
Table 1-16. Electrical Specifications for the 230 V Version
ItemSpecification
Rated voltage220 to 240 VAC
Input voltage range198 to 264 VAC
Rated frequency range50 to 60 Hz
Input frequency range49.5 to 60.5 Hz
Rated current0.4 A (maximum 0.9 A, depending on the character type)
Power consumptionFX-1180:Approximately 36 W (ISO/IEC 10561 letter pattern)
FX-880:Approximately 34 W (ISO/IEC 10561 letter pattern)
ENERGY STAR Compliant
Insulation resistance
Dielectric strength1000 VAC rms 1 min or 1200 VAC rms 1 sec (between AC line and
10 MΩ minimum (between AC line and chassis)
chassis)
EPSON FX-880/FX-1180 Service Manual
1-11
Product Description
Table 1-17. Electrical Specifications for the UPS Version
ItemSpecification
Rated voltage100 to 120 VAC or 220 to 240 VAC
Input voltage range90 to 132 VAC or 198 to 264 VAC
Rated frequency range50 to 60 Hz
Input frequency range49.5 to 60.5 Hz
Rated currentat 120 V: 0.8 A (maximum 2.0 A, depending on the character type)
at 230 V:0.5 A (maximum 1.0 A, depending on the character type)
Power consumptionFX-1180:Approximately 36 W (ISO/IEC 10561 letter pattern)
FX-880:Approximately 34 W (ISO/IEC 10561 letter pattern)
ENERGY STAR Compliant
Insulation resistance
10 MΩ minimum (between AC line and chassis)
Dielectric strength1500 VAC rms 1 min (between AC line and chassis)
Reliability
Table 1-18. Reliability Statistics
ItemSpecifications
Total print volume6.5 million lines (except printhead)
MTBF4000 power-on hours (POH)
Printhead life200 million characters/wire
Environmental Requirements
The printer requires the following conditions while operating or in storage:
Table 1-19. Environmental Requirements
ItemSpecifications
Temperature
41 to 95° F (5 to 35° C), operating
59 to 77° F (15 to 25° C), operating
-22 to 140° F(-30 to 60° C), storage
Relative Humidity10 to 80%, operating
30 to 60%, operating
0 to 85%, storage
*1
*1, *2
*1
Notes:
1. Without condensation.
2. During printing on envelopes, card stock, labels, multi-part forms, roll paper, or recycled paper.
*1
*1, *2
1-12
EPSON FX-880/FX-1180 Service Manual
Safety Approvals
The FX-880 and FX-1180 have met the following safety approvals:
Table 1-20. Safety Information
VersionSafety StandardsEMI
120 VUL 1950 with D3,
CSA C22.2 No. 950
230 VEN60950 (VDE, NEMKO)EN55022 (CISPR pub. 22)
UPSUL 1950, CSA C22.2 No. 950FCC part 15 subpart B class B,
FCC part 15 subpart B class B,
CSA C108.8 class B
class B,
AS/NZS 3548 class B
CSA C108.8 class B
CE Marking
The following table lists CE marking information for the 230 V version.
Product Description
Low Voltage Directive 73/23/EECEN60950
EMC Directive 89/336/EECEN55022 class B
12 international character sets and one legal character set
Table 1-22. Character Tables
Character TablesBitmap Fonts
Italic
PC437 (US Standard Europe)
PC850 (Multilingual)
PC860 (Portuguese)
PC861 (Icelandic)
PC863 (Canadian-French)
PC865 (Norwegian)
Abicomp
BRASCII
Roman 8
ISO Latin 1
EPSON Draft
EPSON Roman
EPSON Sans Serif
1-14
EPSON FX-880/FX-1180 Service Manual
Product Description
Interface Specifications
The FX-880 and FX-1180 provide a bidirectional 8-bit parallel interface and a Type-B optional interface slot
as standard.
Parallel Interface (Forw ard Channel )
Transmission mode
Adaptable connector
Synchronization
Handshaking
Signal level
8 bit parallel, IEEE-1284 compatibility mode
57-30360 (AMPHENOL) or equivalent
/STROBE pulse
BUSY and /ACKNLG signals
TTL compatible (IEEE-1284 level 1 device)
Table 1-23. Pin Assignments for Forward Channel
PinSignalReturn
GND Pin
1/STROBE19InStrobe pulse. Input data is latched at falling edge of
2 to 9DATA1 to 820 to 27InEach signal, from bit 0 to bit 7, represents parallel
10/ACKNLG28OutThis signal (negative pulse) indicates that the printer
11BUSY29OutThis signal’s HIGH level means that the printer is not
12PE28OutThis signal’s HIGH level means the printer has a
13SLCT28OutAlways HIGH when the printer is powered on.
14/AFXT30InNot used.
31/INIT30InThis signal’s negative pulse initializes the printer.
32/ERROR29OutThis signal’s LOW level means the printer is in an
36/SLIN30InThis signal is always HIGH when printer power is ON.
18Logic H
35+5V
17Chassis
16,33
19-30
15,34NC
GND
In/OutFunctional Description
the signal.
input data. HIGH means data 1; LOW means data 0.
has received data and is ready to accept more data.
ready to accept data.
paper-out error.
error state.
Out
Out
This line is pulled up to +5 V through 3.9K Ω resistor.
This line is pulled up to +5 V through 1.0K Ω resistor.
Chassis GND.
Signal GND.
Not connected.
Note:
In/Out refers to the direction of signal flow from the printer’s point of view.
EPSON FX-880/FX-1180 Service Manual
1-15
Product Description
The BUSY signal is active (HIGH) under the following conditions:
■
While receiving data.
■
When the input buffer is full.
■
When the INIT signal is active LOW.
■
When the /ERROR or PE signal is active.
■
During hardware initialization.
■
In the self-test mode.
■
In the adjustment mode.
■
In default-setting mode.
The /ERROR signal is active LOW under the following conditions:
■
If there is a release lever error.
■
If there is a paper-out error.
■
If there is a paper-jam error.
The PE signal is active HIGH under the following conditions:
■
If there is a paper-out error
DATA
STROBE
BUSY
ACKNLG
DATA (n)
t
hold
t
setup
t
ready
t
busy
t
stb
t
reply
t
ack
Figure 1-7. Data Transmission Timing
t
nbusy
t
next
DATA (n+1)
1-16
EPSON FX-880/FX-1180 Service Manual
Table 1-24. Maximum and Minimum Timings for Data Transmission
* Rise and fall time of output signals.
** Rise and fall time of input signals.
Product Description
500 nsec
120 nsec
200 nsec
Parallel Interface (Reverse Channel)
Transmission modeIEEE-1284 nibble mode
Adaptable connector57-30360 (Amphenol) or equivalent
SynchronizationRefer to the IEEE-P1284 specification
HandshakingRefer to the IEEE-P1284 specification
Signal LevelIEEE-1284 level 1 device
TTL compatible
Data transmission timingRefer to the IEEE-1284 specification
EPSON FX-880/FX-1180 Service Manual
1-17
Product Description
Table 1-25. Pin Assignments for Reverse Channel
PinSignalReturn
In/Out*Functional Description
GND Pin
1HostClk19InHost clock signal
2 to 9
DATA1∼8
20 to 27InParallel input data to the printer
10PtrClk28OutPrinter clock signal
11PtrBusy, DataBit-3,729OutPrinter busy signal and reverse channel transfer
data bit 3 or 7
12AckDataReq,
DataBit-2, 6
28OutAcknowledge data request signal and reverse
channel transfer data bit 2 or 6
13Xflag, DataBit-1, 528OutX-flag signal and reverse channel transfer data
bit 1 or 5
14HostBusy30InHost busy signal
31/INIT30InNot used
32/Data Avail,
DataBit-0, 4
29OutData available signal and reverse channel
transfer data bit 0 or 4
361284-Active30In1284 active signal
18Logic-H
Out
This line is pulled up to + 5 V through 3.3K Ω
resistor.
35+5 V
Out
This line is pulled up to +5 V through 1.0K Ω
resistor
17Chassis
16, 33,
GND
Chassis GND
Signal GND
19-30
15, 34NC
Not connected
Note:
* In/Out refers to the direction of signal flow from the printer’s point of view.
Interfaces
The FX-880 and FX-1180 include one built-in parallel interface card and one built-in card slot. The card
slot accepts a variety of Type-B optional interface cards, as indicated by the table below.
The printer selects the interface automatically, unless the user manually overrides it.
Manual selection
The user can override automatic selection by selecting either the built-in parallel or the optional Type-B
interface in the default setting mode. (See “Control Panel Operation” later in this chapter.)
Automatic selection
Normally, interface selection is automatic. (This is the factory-set default, but it can be changed in the
default settings.) With automatic selection enabled, the printer initializes to the idle state and scans its
interfaces. When the printer receives data, the interface that receives the data first is selected. As long
as the host continues sending data or the printer interface is busy, the selected interface remains active.
When the host stops transferring data and the printer sits in standby for the number of seconds specified
in the default settings, the printer returns to the idle state and the interface is de-activated.
Interface state and interface selection
When the printer is initialized or returns to the idle state after printing, three things happen:
■
The parallel interface goes into the ready state.
■
If an optional interface card is installed, the printer sends it an enable command.
■
If a serial interface card is installed, it sends an XON code and sets the DTR signal to SPACE.
When an interface is not selected, various things can happen:
■
When the parallel interface is not selected, it goes into a busy state.
■
When an optional interface card is installed and not selected, the printer sends a disable
command to the optional interface.
■
When the Type-B serial interface card is installed and it is not selected, the interface sends an
XOFF code and sets the DTR signal to MARK.
Interrupt signals, such as the INIT signal for the parallel interface, are not effective unless the interface to
which it is directed is selected.
Preventing Data Transfer Timeout in the Host
Generally, a host abandons data transfer to a peripheral when the peripheral is in the busy state for a
period of 30 seconds or more, depending on the default settings of the host. To prevent time-out in the
host, the printer begins receiving data more slowly after the input buffer has received several hundred
bytes of data. Data transfer may then slow to as little as a few bytes per minute, with the printer
registering a busy state only if the input buffer fills completely.
EPSON FX-880/FX-1180 Service Manual
1-19
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