Epson Stylus Pro XL+ Service manual

EPSON COLOR INKJET PRINTER

Stylus Pro XL+

SERVICE MANUAL

EPSON

4006101

PREFACE

This document provides supplementary information to describe the Stylus Pro XL+, which is a follow-on version of the Stylus Pro XL. Therefore, you must refer to this information in conjunction with the Stylus Pro XL Service Manual for details on any subjects common to both printers.

REVISION SHEET

Revision Issue Date Revision Page

A March 15, 1996 - 1st issue

-ii-

Stylus Pro XL+ Product Description

1.1 FEATURES

The Stylus Pro XL+ is a high-quality, high-performance color ink jet printer. This printer is provided with a standard bidirectional parallel interface suitable for the Microsoft interface for the Macintosh. The main components and case of this printer are similar to the Stylus Pro XL. The main features are:

❒ High-quality color printing 720 dpi printing using EPSON Micro Dot mode

720 dpi printing on:

plain paper EPSON premium paper transparencies

❒ High print speed 720 dpi printing of raster graphics at 200 cps ❒ Built-in-3 I/F Bidirectional parallel interface (IEEE-1284 nibble mode)

Mac serial interface Type-B interface (optional)

❒ Ink out / low indicators Black and color ink out / ink low indicator LEDs

Windows™ 95 environment and a serial

Rev.A 1-1

Product Description Stylus Pro XL+

1.2 SPECIFICATIONS

This section provides statistical facts and other detailed information for the printer.

1.2.1 Printing Specifications

The table below shows print speeds and printable columns.

Table 1-1. Print Speed and Printable Columns

Character Pitch Printable Columns Print Speeds (LQ)

10 cpi (pica) 127 200 cps 12 cpi (elite) 152 240 cps

15 cpi 190 300 cps 17 cpi (pica condensed) 218 343 cps 20 cpi (elite condensed) 254 400 cps

Graphics Density Printable Dots Print Speed (10 cpi)

180 dpi × 180 dpi 360 dpi × 360 dpi

H — 720 dpi × V — 360 dpi

720 dpi × 720 dpi

Control codes: ESC/P 2 and expanded raster graphics codes Input data buffer: 128K bytes

2289 4578 9156 9156

200 cps

1-2 Rev.A

Stylus Pro XL+ Product Description

1.2.2 Ink Cartridge Specifications

Black

Type: Exclusive cartridge Color: Black Print capacity: 1170 pages (ECMA132 letter) Life: The effective life from the indicated production date is 2 years. Storage temperature:

Dimensions (W × D × H): 26.9 × 67.4 × 41.8 mm (1.06 ×2.65 × 1.65 in.)

–30 ∼ 40° C(−22 ∼ 104° F) Storage under a month at 40° C (104° F)

−30 ∼ 60° C (−22 ∼ 140° F) Transit under a month at 40° C (104° F)

−30 ∼ 60° C (−22 ∼ 140° F) Transit under 120 hours at 60° C (140° F)

Color

Type: Exclusive cartridge Colors: Cyan, magenta, yellow Print capacity: 620 pages (5% duty for each color, A4, 360 dpi) Life: The effective life from the indicated production date is 2 years. Storage Temperature:

Dimensions (W × D × H): 54.0 × 67.4 × 41.8 mm (2.13 × 2.65 × 1.65 in.)

Notes:

❒

The ink cartridge cannot be refilled; it is the only consumable item in the printer.

❒

Do not use an ink cartridge that has exceeded the ink life.

❒

Ink freezes below−3°C; however, it can be used after it returns to room temperature.

–30 ∼ 40° C(−22 ∼ 104° F) Storage under a month at 40° C (104° F)

−30 ∼ 60° C (−22 ∼ 140° F) Transit under a month at 40° C (104° F)

−30 ∼ 60° C (−22 ∼ 140° F) Transit under 120 hours at 60° C (140° F)

Rev.A 1-3

Product Description Stylus Pro XL+

1.3 INTERFACE SPECIFICATIONS

The Stylus Pro XL+ comes standard-equipped with two interfaces: an 8-bit bidirectional parallel and an RS-422 mini-DIN serial interface for the Macintosh. This printer is also equipped with a slot for an optional Type B interface.

1.3.1 Parallel Interface Specifications

1.3.1.1 Forward Channel

Transmission mode: 8-bit parallel, IEEE-1284 compatibility mode Synchronization: By Handshaking: By BUSY and Signal level: TTL compatible level Adaptable connector: 36-pin 57-30360 (Amphenol or equivalent) Data transmission timing: See Figure 1-7 of the Stylus Pro XL Service Manual.

Note:

Transition time (rise time and fall time) of every input signal must be less than 0.2 Transition time (rise time and fall time) of every output signal must be less than 0.12

The printer sets the BUSY signal HIGH before setting either the ERROR signal LOW or the PE signal HIGH. BUSY is held HIGH until all these signals return to their inactive state. The BUSY signal is active (HIGH) under the following conditions:

❒ During data reception (See Figure 1-7 of the Stylus Pro XL Service Manual..) ❒ When the input buffer is full ❒ When the ❒ During initialization ❒ When the ❒ During self-test ❒ During default setting ❒ When the parallel interface is not selected

ERROR signal is active (LOW) under the following conditions:

The

INIT input signal is active

ERROR is active

STROBE pulse synchronization

ACKNLG signals

❒ When a paper-out error occurs ❒ When a release lever operation error occurs ❒ When a hardware error (a fatal error) occurs

The PE signal is active (HIGH) under the following conditions:

❒ When a paper-out error occurs

1-4 Rev.A

Stylus Pro XL+ Product Description

Table 1-2 shows connector pin assignments and signal functions of the 8-bit parallel interface forward channel.

Table 1-2. Signal and Connector Pin Assignments for the Parallel Interface

(Forward Channel)

Pin No.

2-9 DATA 0-7 20 - 27 I

11 BUSY 29 O

12 PE 28 O 13 SLCT 28 O This signal is always at HIGH while printer power is on.

14 AFXT 30 I Not used.

Signal

Name

STROBE 19 I

ACKNLG 28 O

Return

GND Pin

I/O* Description

The

STROBE pulse is used to read data from the host computer. Pulse width must be 0.5 µs or more. Normally, it is HIGH, and data is latched with the rising edge of this signal.

DATA 0-7 are parallel data bits. When one of these signals is HIGH, the data bit is 1; when LOW, the data bit is 0. The most significant bit (MSB) is DATA 8. The signal state must be maintained for 0.5 µs on either side of the

STROBE signal’s active edge.

ACKNLG is a negative pulse indicating that the printer can accept data again.

The BUSY signal informs the host computer of the printer’s status. When this signal is HIGH, the printer cannot accept any more data.

This signal indicates whether paper is available in the printer or not. A HIGH level indicates no paper.

31 32

18 Logic H — O 35 +5 V — — 36

16, 33,

19-30

15, 34 NC — — Not connected

INIT 30 I

ERROR 29 O This signal goes LOW if the printer has detected an error.

SLIN 30 I Not used.

Chassis

GND GND — — Signal ground.

— — Chassis ground.

If this signal goes LOW, the printer is initialized. The pulse width of this signal must be 50 µs or more.

Pulled up to +5 V through 3.9K Ω resistor in the printer. Pulled up to +5 V through 3.3K Ω resistor in the printer.

* The I/O column indicates the direction of the signal as viewed from the printer.

Rev.A 1-5

Product Description Stylus Pro XL+

1.3.1.2 Reverse Channel

Transmission mode: 8-bit parallel, IEEE-1284 nibble mode. Synchronization: Refer to the IEEE-1284 specification. Handshaking: Refer to the IEEE-1284 specification. Signal level: IEEE-1284 level 1 device (See the forward channel.) Adaptable connector: The same as for the forward channel. Data transmission timing: Refer to the IEEE-1284 specification.

Table 1-3 shows connector pin assignments and signal functions of the 8-bit parallel interface for reverse channel.

Table 1-3. Signal and Connector Pin Assignments for the Parallel Interface

(Reverse Channel)

Pin No. Signal Name

1 Host Clk 19 I Host clock signal.

2 - 9 DATA 0 - 7 20 - 27 I

10 Ptr Clk 28 O Printer clock signal. 11

13 14 Host Busy 30 I Host busy signal.

31 32 36 1284-Active 30 I 1284 active signal.

Ptr Busy / Data

Bit 3, 7

Ack Data Req /

Data Bit 2, 6

Xflag / Data Bit

1, 5

INIT 30 I Not used.

Data Avail / Data

Bit 0, 4

Return

GND Pin

29 O

28 O

29 O

I/O* Description

DATA 0-7 signals represent data bits 0 - 7, respectively. Each signal is at a 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.

Printer busy signal and reverse channel transfer data bits 3, 7.

Acknowledge data request signal and reverse channel transfer data bits 2, 6.

X-flag signal and reverse channel transfer data bits 1, 5.

Data available signal and reverse channel transfer data bits 0, 4.

18 Logic-H — O 35 +5V — O

17 Chassis GND — — Chassis GND.

16, 33, 19 - 30

15, 34 NC — — Not connected.

GND — — Signal GND.

A HIGH signal indicates that all other signals sourced by the peripheral are in valid status.

Pulled up to +5 V via 3.3K Ω resistor.

* : The I/O column indicates the direction of the signal as viewed from the printer.

1-6 Rev.A

Stylus Pro XL+ Product Description

Extensibility Request: The printer responds affirmatively when the extensibility request values

are 00H or 04H, values that mean — 00H: Request Nibble Mode Reverse Channel Transfer 04H: Request Device ID

Return data using nibble mode reverse channel transfer.

Device ID: The printer sends following device ID string when it is requested.

[00H][39H] MFG:EPSON; CMD:ESCPL2-00; MDL:Stylus Pro XL+; CLS : PRINTER;

Note: [00H] denotes a hexadecimal value of zero.

1.3.2 Optional Interface Specifications

Type-B interface Level-2 (300 mA type) is supported.

Note : With the simplified serial interface card C82305*, “Disregard a parity bit” setup is not

supported.

Reply message ESC/P 2 is selected Main-Type: MTP48p,PW127cl10cpi,PRG(VCxxxx)rev,AP300ma Product-Name: Stylus Pro XL+ Emulation-Type: ESCP-00 Entity-Type: EPSONLQ2

Rev.A 1-7

Product Description Stylus Pro XL+

1.4 OPERATIONS

This section describes the basic operations of the printer.

1.4.1 Control Panel

The control panel for this printer has 1 lock-type and 5 non-lock-type pushbuttons, and 15 LED indicators for easy operation of the various printer functions.

: Button

: LED

Figure 1-1. Control Panel Appearance

Buttons

Operate Turns the printer on or off. This button is in the secondary circuit of the

power supply. This lets the printer execute the head-capping function after it receives the signal to turn off and before actual printer power down.

Alt Modifies the functions of other buttons. Holding down this button for 3

seconds causes the printer to move the carriage to the ink cartridge installation position. Pressing Alt again causes the carriage to return to the home position.

Font Cycles through the font choices. Pressing the Font button while holding

down the Alt button causes the carriage to move to the gap-adjustment position. Pressing the Alt button again causes the carriage to return to the home position.

Economy/Condensed Selects either economy or condensed printing mode. Pressing the

Economy/Condensed button while holding down the Alt button starts the black printhead cleaning cycle.

Load/Eject Either loads a new sheet into the printer or ejects paper currently in the

paper path. Pressing the Load/Eject button while holding down the Alt button starts the color printhead cleaning cycle.

Pause Stops printing temporarily or resumes printing if it has been stopped

temporarily. Pressing Pause while holding down the Alt button resets the printer.

1-8 Rev.A

Stylus Pro XL+ Product Description

Indicators

Operate On when the printer is on. Blinks while the printer is powered on or off. Paper Out On when the printer is out of paper. Blinks when a paper jam occurs. Ink Out (Black) On when the black ink cartridge is out of ink or not installed. Blinks when

black ink is low.

Ink Out (Color) On when the color ink cartridge is out of ink or not installed. Blinks when

color ink is low. Economy On when economy printing mode is selected. Condensed On when condensed printing mode is selected. Font These LEDs indicate the selected font. Pause On when printing is paused. Data On when print data is in the input buffer. Data and Pause lights blink if an

error occurs.

1.4.2 Panel Operation at Power On

The list below contains printer modes and the procedures you can use to activate them: Self-test mode Turn on the printer while holding down the Load/Eject button. Hex dump mode Turn on the printer while holding down the Font and Load/Eject buttons.

Once this mode is selected, the printer prints all received data in

hexadecimal format. Default setting mode Turn on the printer while holding down the Economy/Condensed button.

The printer enters the default setting mode. Initialize EEPROM Turn on the printer while holding down the Alt, Font, Load/Eject, and

Pause buttons.

Note: You can exit self-test, hex dump, or default setting by turning off the printer.

Rev.A 1-9

Product Description Stylus Pro XL+

1.4.3 Error Conditions

The printer can detect the various errors and indicate them with LEDs.

Table 1-4. Error Indications

Error Operate

Paper out — On — — — — — — Black ink end — — On — — — — — Black ink low — — Blink — — — — — Color ink end — — — On — — — — Color ink is low — — — Blink — — — — Paper jam — Blinks — — — — — — Maintenance

request Carriage error — — — — — — Blinks Blinks

— Blinks Blinks Blinks Blinks Blinks Blinks Blinks

Paper

Out

Ink

Out

(Black)

Ink

Out

(Color)

Economy Condensed Pause Data

— Not used to indicate the specified error.

1-10 Rev.A

Stylus Pro XL+ Service Manual Operating Principles

2.1OPERATING PRINCPLES - OVERVIEW

Thissectiondescribestheoperatingprinciplesoftheprintermechanismandtheelectricalcircuitsofthe Stylus Pro.

2.2OPERATINGPRINCIPLES OFTHEPRINTERMECHANISM

2.2.1Principlesof thePrintingOperation

TheprintingmechanismfortheStylusProXL+hasadrop-on-demandinkjetsystem,similartothesystemin allotherEPSONinkjetprinters.TheStylusProXL+printerusestheMicroDotprintingfunctionbothwith blackinkandsuper720dpicolorprinting.ThetypeofMicroDotprintingtheStylusProXL+performsisthe sameasisavailableintheStylusCOLORIIandStylusCOLORIIs/820.However,withthoseprinters, MicroDotprintingisavailableforprintingwithblackinkonly.TheMicroDotprintingmodecanbeselected automaticallywith720dpiprintingqualityusing theprinter driversettingsdescribed inthefollowingtable.

Table 2-1.Special Printing Mode

Paper Type Print Density (DPI) Print Mode

360 NormalDotPrinting

NormalPaper

H —720× V— 360

EPSON Micro Dot Printing

360 NormalDotPrinting

EPSON Premium Paper

for 360dpi

EPSON Premium Paper

for 720dpi

Labelsfor720dpi 720 EPSON Micro Dot Printing

High Quality Glossy

Card Stock

HighQualityGlossy Paper 720 EPSON Micro Dot Printing

Transparencyfilm 360 NormalDotPrinting

MicroDotprintingmodecanimproveoutputquality,becauseiteliminatesbandingthatcansometimesoccur innormalmode.ThedotsizeinEPSONMicroDotPrintingmodeissmallerthanthedotsizeinnormal printing.Normalprintmodeis mainly usedin resolutionsof360 dpior less.

H— 720× V— 360

720 EPSON Micro Dot Printing

EPSON Micro Dot Printing

Rev.A 2-1

Operating Principles Stylus Pro XL+ Service Manual

2.3 OPERATING PRINCIPLES OF THE ELECTRICAL CIRCUITS

The Stylus Color Pro XL+ contains the following circuit board units:

❒ C184 MAIN board (main control circuit board). ❒ C137 PSB/PSE board (power supply circuit board). This board is the same as Stylus Color’s ❒ C137 PNL (control panel board). This board is similar to Stylus Color’s.

In addition to the circuit boards above, part of the printhead drive circuit is built on a separate circuit board installed in the carriage unit; the printhead is attached directly to this board. The figure below shows a block diagram of the electrical circuits.

2.3.1 Operating Principles of the Main Control Circuit

The main control circuit for this printer is the C184 MAIN board. This circuit is controlled by a 16-bit H8/3003 CPU (IC1), running at 14.7456 MHz. The CPU has a unique architecture, capable of handling data on the data bus at either an 8-bit or 16-bit bus width. Because of this, both a 16-bit and an 8-bit data bus width-type ROM can be used on the board, increasing the internal processing speed. Also, the CPU’s unique architecture is capable of refresh control. In addition, the CPU controls the serial interface (RS-422 for Mac) and optional interface (Type B interface).

Gate array E05B21 (IC2) manages the printhead driver, the external Centronics extension CG board, and the control panel. The gate array also oversees the controls that create the 4-bit signals for the carriage or the paper feed motor. (The carriage and paper feed motor are controlled by current duty data.) This board also is equipped with a 93C46 EEPROM (IC11) to store certain parameters, such as the black/color head data, printer mechanism control parameters, default setting parameters, as well as a special counter value used for printhead (ink management) protection.

parallel interface, the

Timer IC NJU6355E (IC10) counts each time the printer goes through its cleaning cycle and keeps track of how much time has elapsed since the printer has been used, thereby allowing the printer to be cleaned only when necessary. The timer value is backed up by the lithium battery.

D-RAM (4M)

(IC5)

DMAREQ

SED6110DOA

(U1, U2)

D-RAM (4M)

( IC 6)

E05B21

(IC2)

o T

Par a llel I/F

Carriage / Paper Feed

Motor Driver Signal

Black 64 Nozzles

Color 48 Nozzles

Data Bu s

Address Bus

A o

Black / Color Head

Comm on and Nozzle

MROM (4-32M)

(IC7 )

Reset (Log ic )

(IC9)

PST592D

Panel

EEPROM

(IC11) 93C46

Selector Drive Signal

From A

RS-422 Seria l I/ F

P-ROM (4M)

(IC3)

Type-B I/F

Reset (Power)

(IC8)

M51955B

SN75LBC775

(IC13)

C184 MAIN Boar d

H8D2778A (IC16, 17)

Black/Color Head Common Driver Circuit

P-ROM (1-4M)

(IC4)

Refresh

CPU

H8/3003

(I C1 )

(IC10)

NJU6355E

(Timer Cou nter)

SLA7043M (IC14, 15)

From B

Carriage / Paper Fe ed Motor Driver

Figure 2-1. Main Control Circuit Block Diagram

2-2 Rev.A

+35 V

+5 V

NMI

P62

CPU (IC1)

+5 V

PST592D (IC X)

E05B21 (IC2)

RES

RESET

672

M51955 B

(I C 8 )

TBRST

RST Type B

Stylus Pro XL+ Service Manual Operating Principles

2.3.2.1 Reset Circuits

The C184 MAIN board contains 2 reset circuits: the +5 V monitor reset circuit and the +35 V monitor reset circuit. The +5 V monitor reset circuit monitors the voltage level of the +5 V line (logic line), using reset IC PST592D (IC9), and outputs a reset signal to the CPU (IC1) and the E05E21 gate array (IC2) when the voltage level drops below +4.2 V. The +35 V monitor reset circuit monitors the voltage level of the +35 V line, using reset IC M51955B (IC8), and outputs a reset signal to the CPU. The reset signal is generated when the voltage level drops below +28 V, and this causes a non-maskable interrupt (NMI).

Figure 2-2. Reset Circuit Block Diagram

Rev.A 2-3

(CN12)

CCO

181

CPU (IC1)

SWA0

(CN8)

(CN9)

180

BCO

(CN11)

GA (IC 2)

AN0

SWC1

SWC2

(CN12)

SWC0

PB3

Operating Principles Stylus Pro XL+ Service Manual

2.3.2.2 Sensor Circuits

The following sensor circuits enable the C184 MAIN board to monitor printer mechanism status: HP sensor A photocoupler-type HP (home position) sensor is attached to the surface of the printer

mechanism to detect the carriage home position. A HIGH level from the signal indicates that the carriage is in home position.

PE sensor A mechanical switch PE (paper end) sensor is built into the printer mechanism to determine

whether there is paper in the printer or not. A LOW level from the signal indicates that no paper is loaded.

BCO sensor, CCO sensor

Thermistor A thermistor is attached to the color printhead driver board to monitor its temperature using

Micro switches (BCO sensor for the black ink cartridge, CCO sensor for the color ink cartridge) are attached to the bottom of ink cartridge holder in the carriage unit. When the ink cartridge is installed, these switches are pressed and a LOW level from the signal indicates that the ink cartridge is installed into the ink cartridge holder. These sensing timing is only in the cartridge installation mode and one minute after the carriage holed to prevent from miss censoring owing from switch actuators shock in printing condition.

the thermistor’s resistance value (at 25° C (77° F), the normal value is approximately 10K Ω). The CPU changes the printhead drive signal’s pulse width (charge pulse width)

based on the temperature level.

Figure 2-3. Sensor Circuit Block Diagram

2-4 Rev.A

Stylus Pro XL+ Service Manual Operating Principles

2.3.2.3 Carriage Motor Driver Circuit

Carriage motor driver IC SLA7043 (IC15) outputs a constant current to drive the carriage motor in the printer mechanism. Gate array E05B21 (IC2) decides the motor phase and speed, and then it sends a signal to the carriage motor driver IC (SLA7043), using the 4-bit serial transmission line. The first bit indicates the direction of motor rotation. The other three bits (a, b, c) are current duty data for the motor speed for each printing sequence. (Refer to Table 2-2, below.)

SLA7043 can select the reference voltage itself based on these three bits of current duty data. Also, the driver IC receives these signals via two serial transmission lines for the two motor phases (phase A and phase B). As

a result, the carriage motor can be driven in micro step sequence (

⁄

inches, minimum). The SLA7043

720

motor driver reads four-bit serial data using four clock counts from the E05B21 (IC2) clock. Each bit is read at the falling edge of the clock pulses. Then, received serial data is written into the shift

register and then shifted the latch register. When the strobe pulse becomes active from the E05B21 (IC2), serial data is moved into the reference voltage selection circuit and the voltage is changed. Therefore, when the printer is in the constant speed mode, this strobe pulse becomes inactive. The following table indicates the current duty of each carriage motor speed mode.

Table 2-2. Serial Data Contents

Mode c b a* Vref (Typical)

0 000 1 001 2 010 3 011 4 100 5 101 6 110

7 111

Vref × 1/3 (Vref = +5 V)

× 0%

×20%

×40 % ×55.5% ×71.4%

×83% ×91%

×100%

* “a” indicates the 2nd bit, “b” indicates the 3rd bit, and “c” indicates the 4th bit.

The following figure shows 4-bit serial data and how this data is transferred by the SLA7043 driver. The step time for the reference voltage is determined by the interval time of the strobe pulse.

SLA7043 (IC15)

CLKA CLKB STBA STBB

DATA A DATA B REF A REF B

RSA RSB

GND

11 18

2 3

(CN6)

4 5

V 5

3 +

A A B

E05B21 (IC2)

CRCLK

CRSTB

CRASO

CRBSO

CRV0-5

CRHOLD

197

198

199 196

5-10

205

Figure 2-4. Carriage Motor Circuit Block Diagram

Rev.A 2-5

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