Epson EPL-5500 User Manual

EPSON TER M INAL PR INTER

EPL-5500

SERVICE MANUAL

EPSON

4005431

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NOTICE

All rights reserved. Reproduction of any part of this manual in any form whatsoever without SEIKO
EPSON’s express written permission is forbidden.

The contents of this manual are subjects to change without notice.
All efforts have been made to ensure the accuracy of the contents of this manual. However, should

any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
The above not withstandi ng SEIKO EPSON can assume no responsibil ity for any error s in this

manual or the consequence thereof.
Epson is a registered trademark of Seiko Epson Corporation.

General N ot ice:

be trademarks of their respective campanies.

Other product names used herein are for ident ication purposes only and may

Copyright © 1995 by SEIKO EPSON CORPORATION Nagano, Japan

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PRECAUTIONS

Precautionary not ati ons throughout t he t ext ar e c at egor ized relative to 1) personal injury and 2)
damage to equipment.

DANGER

WARN ING

The precautionary measures itemized below should always be observed when performing repair/
maintenance procedures.

Signals a precautio n which, if ignored, could result in seri ous or fatal personal injur y.
Great ca ution s hould be exercised i n performing procedures pr eceded by DANGER
Headi ngs.

Signals a precaution which , if ignored, could result in damage to equipment.

DANGER

1. ALWAY S D ISCON NECT T HE PRODU CT FROM B OT H THE P OWER SO URCE AN D PERI ­PHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURE.

2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH
BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICI ANS IN
THEIR LINE OF WO RK.

3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT
THE UNI T TO A POW ER SOU RCE UNTIL IN STR UCTED TO DO SO. WHEN THE PO WER
SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON
POWE R SUPPLY AND OTHER EL ECTRONI C COMPONENTS.

WAR NING

1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORM ED ONLY BY AN EPSON CERTI­FIED REPAIR T ECHNICI AN.

2. MAKE C ERTAIN THAT THE SOURCE V OL TAGE IS THE SAME AS THE RAT ED VOLTAGE,
LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A
PRIMA RY AC R ATI NG D IFFE RENT FRO M AV AILA BLE POW ER SOUR CE , DO NOT C ON ­NECT IT TO THE POWER SOURCE.

3. ALWAY S VERIFY THAT THE EPSON PRO DUCT HAS BEEN DISCONN E CTED FROM T HE
POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS
AND/O R INDIVI DUAL CHI PS.

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC
DISCH ARGE EQ UIPM ENT, S UC H AS A NTI -STAT IC WRI ST S TRAPS, WH EN ACCES SIN G
INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE
MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NONAPPROVED
COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WAR­RANTY.

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SAFET Y INFORMATION

This printer is a page printer which operates by means of a laser. There is no possibility of danger from
the laser, provided the printer is operated according to the instructions in this manual provided.

Since radiation em itted by the laser is completely confined with in protective housings, the laser beam
cannot escape from the machine during any phase of user operation.

For United States Users;

[Laser Safety]

This printer is certified as a Class 1 Laser product under the U.S. Department of Health
and Human Services (DHHS) Radiation Performance Standard according to the Radia­tion Control for Healt h and Safety Act of 1968. Thi s means that the printer does not
produce hazardous laser radiation.

[CDRH Reg u lations ]

The Center for Devices and Radiologica l Health (CDRH) of the U.S. Food a nd Drug
Administr ation implemented regul ati ons for laser product s on August 2, 1976. Com­pliance is mandatory for products marketed in the United States. The label shown below
indicates compliance with the CDRH regulations and must be at tached to laser products
marketed in the United States.

WARNING : Use of controls, adjustments or performance of procedures other
than those specified in this manual may result in hazardous radiation exposure.

[Internal Laser Radiation]

Maximum Radiation Power: 5.0 × 10-4 (W)
Wave Length: 790 ± 20 nm

This is a Class IIIb Laser Diode Assay that has an invisi ble la ser beam. The print head
unit is NOT A FIELD SERVICE ITEM. Therefore, the print head unit should not be opened
under any circumstances .

For Other Countr ies Users;

WARNING: Use of controls, adj ustments or performance of pro cedures other

than those specified in this manual may result in hazardous radiation exposure.

This is a semiconductor laser. The maximum power of the laser diode is 5.0 ×
10-4 W and the wavelength is 790 ± 20 nm.

For Denmark Users;

ADVARSEL

Usynlig laserstr åling ved åbning , når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.

Klasse 1 laser produkt der opfylder IEC825 sikkerheds kravene.

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For Finland , Sweden User s;

VAROITUS

Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saat­taa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle laser­säteiylle.

VARNING

Om apparaten används på annat sätt än i denna bruksanvisning specificerats,
kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för
laser klass 1.

For Finland , Sweden Ser vice Peop le

VAROITUS

Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle laser­säteilylle. Älä katso säteeseen.

VARNING

Osynlig laserstrålning när denna del är öppnad och spärren är urkopplad.
Betrakta ej strålen.

For Norway Users;

ADVARSEL

Dersom apparat et brukes på anne n m åte enn s pesi fi sert i denne br uksanv is­ning, kan brukeren utsettes for unsynlig laserstråling som overskrider grensen
for laser klasse 1.

Dette er en halvleder laser. Maksimal effeckt til laserdiode er 5.0 × 10-4 W og
bølgelengde er 790 ± 20 nm.

Laser Safety Labels

[Label on rear printer case]

A laser safety labels is attached on the outside of the printer shown below.

For United State

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For Europe

[Label inside printer]

The following laser safety label will be attached inside the printer as shown below.

For Denmark, Finl and, Sweden, and Norway

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PREFACE

This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair
of EPL-5500.
The instruct ions and proc edur es included herein are intended f or the experi ence rep air technici an, and
attenti on should be given t o the prec autions on the preceding page. The chapters are o rganized as
follows:

CHAP TER 1. GENERAL DESC RIPTION

Provides a general product overview, lists specifications, and illustrates the main components of the printer.

CHAP TER 2. OPERATING PR INCIPLES

Describes the theory of printer operation.

CHAPTER 3. DISASSEMB LY AND ASSEMBLY

Includes a step-by-step guide for product disassembly and assembly.

CHAP TER 4. ADJUSTMENTS

Includes a step-by-step guide for adjustment.

CHAPTER 5. TROUBLESHOOTING

Provides Epson-approved techniques for adjustment.

CHAP TER 6. MAINT E NANCE

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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REVISION SHEET

Revision Issue Date Revision Page

Rev. A October 06, 1995 1st issue

Revise the whole pages of the
following chapters:

Chapter 1

Rev. B March 15, 1996

Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6

- vii -

Chapter 1 General Description

Table of Contents

1.1 FEATURES 1-1

1.2 SPECIFICATIONS 1-3

1.2.1 Basic Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.2.2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.2.3 Reliability Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.2.4 Environmental Conditions for Operating (Include Imaging Cartridge) . . . . 1-5

1.2.5 Environmental Conditions for Storage and Transportation . . . . . . . . . . . . 1-5

1.2.6 Applicable Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1.2.7 Specifications for Consumable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1.2.8 Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1.2.9 Software Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.3 INTERFACE SPECIFICATIONS 1-9

1.3.1 Parallel Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1.3.1.1 Compatibility Mode of Parallel Interface . . . . . . . . . . . . . . . . . . . . 1-9

1.3.1.2 Reverse ModeMode Signal Timing . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.3.2 Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

1.3.3 Optional LocalTalk Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

1.4 OPERATING INSTRUCTIONS 1-18

1.4.1 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1.4.2 Printer Settings Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1.4.3 Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

1.4.3.1 Heaxadecimal Dump Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

1.4.3.2 EEPROM Initialize Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

1.4.3.3 Factory Reset Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

1.4.3.4 Default Setting Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

1.4.4 Display of Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

1.4.4.1 Status Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

1.4.4.2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

1.4.4.3 Service Call Error Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

1.4.5 Printer Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

1.4.5.1 Port Fixed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

1.4.5.2 Auto Sense Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

1.4.6 Emulation Mode Switch Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29

1.4.6.1 Emulation Switch by SPL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29

1.4.6.2 Intelligent Emulation Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29

1.4.7 Bi Resolution Improvement Technology . . . . . . . . . . . . . . . . . . . . . . . . . 1-30

1.4.8 Toner Save Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

1.4.9 Optional Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

1.5 MAIN COMPONENTS 1-32

1.5.1 C169 MAIN-B Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33

1.5.2 PWB-E Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

1.5.3 PWB-F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

1.5.4 Optical Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

1.5.5 FUSING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

1.5.6 Photoconductor Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

1.5.7 Developing Cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

1.5.8 Lower Paper Cassette Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

List of Figures

Figure 1-1. Exterior View of the EPL-5500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Figure 1-2. Printable Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Figure 1-3. Compatibility Mode Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Figure 1-4. Parallel Interface State Switch Diagram. . . . . . . . . . . . . . . . . . . . . 1-12

Figure 1-5. Negotiation Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Figure 1-6. Timing Chart of Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Figure 1-7. Termination Timing Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

Figure 1-8. Timing Chart of Interrupt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

Figure 1-9. Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

Figure 1-10. Port Fixed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

Figure 1-11. Auto Sense Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

Figure 1-12. Emulation Switch by SPL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29

Figure 1-13. Intelligent Emulation Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29

Figure 1-14. Effect of RITech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30

Figure 1-15. RITech Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30

Figure 1-16. Toner Save Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

Figure 1-17. Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32

Figure 1-18. C169 MAIN - B Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33

Figure 1-19. PWB-E Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

Figure 1-20. PWB-F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

Figure 1-21. Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

Figure 1-22. Fusing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

Figure 1-23. Photoco nduct or Uni t. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

Figure 1-24. Developing Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

List of Tables

Table 1-1. Options for the EPL-5500. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Table 1-2. Paper Feed Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Table 1-3. Paper Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Table 1-4. Usability of Special Papers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Table 1-5. Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Table 1-6. Differences between EPSON GL/2 and GL/2 in the HP LaserJet 4

Emulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Table 1-7. Built-in Fonts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Table 1-8. Parallel Interface Pin Assignment. . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Table 1-9. Parallel Interface Pin Assignment. . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Table 1-10. Serial Interface Connector Pin Assignments . . . . . . . . . . . . . . . . . 1-15

Table 1-11. LocalTalk Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . 1-17

Table 1-12. Printer Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

Table 1-13. Service MOde Select Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

Table 1-14. Default Settings Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

Table 1-15. Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

Table 1-16. Differences in Components for the C169 MAIN-B Board . . . . . . . 1-33

Rev. A 1-iii

EPL-5500 Service Manual General Description

1.1 FEATURES

The EPSON EPL-5500 is non-impact page printer that combines a semi-conductor laser with
electrophotographic technology. This printer is small and light, and features high-speed,
high-resol ut ion print ing. Mai nte nance is ver y easy as a result of various built-in di agnos t ic functions.
The main features are:

❏

No ozone
Printing speed — 6 ppm (pages per minute)

❏

Resolution — 600/300 dpi (dots per inch)

❏

Light weight — about 5 kg (11 lb)

❏

Small footprint

❏

Low running cost: separation of the development/toner cartridge and photoconductor unit

❏

HP LaserJet 4 emulation mode

❏

22 built-in scalable fonts (8 Agfa and 14 TrueType fonts)

❏

High-performance controller (the controller’s CPU is a 22.5 MHz SPARKlite (MB86933H))

❏

Bi Resolution Improvement Technology (BiRITech) refines the print quality by eliminating

❏

jagged edges from images and characters on 600 dpi and 300 dpi printing
Memory Improvement Technology suppor ted

❏

Optional EPSONScrip t Level 2 (PostScript compatible) module

❏

Optional WPS (Windows Printing System) ROM SIMM module

❏
❏

Optional I239X, ESC/P 2 , and FX emulation ROM SIMM module
EPSON Micro Gray Technology (EMGTech), which is available when using PCL and

❏

EPSONScript Level 2 mode, refines gray scale printing to be comparable to printing on a
1200-dpi printer

❏

Small and low-cost optional LocalTalk with ser ial interface module
1MB standar d RAM and memory expansion availabl e up to 32MB of RAM with the addition of

❏

opt ional SIM M s
Bidirectional parallel interface

❏

Toner-saver mode supported

❏

A multi-user, multi-emulation mode

❏

IES (Intel li gent Emul ation Switch) allows switching between EP SONScript mode and another

❏

mode
SPL (Shared Printer Language) enabl es switching of the printer mode by command

❏

Figure 1-1 shows an exterior view of the EPL-5500.

Figure 1-1. Exter ior View of the EPL-5500

Rev. B 1-1

General Descript ion E PL-5500 Ser vice Manual

Table 1-1 lists the optional units available for the EPL-5500.

Table 1-1. Optio ns for the EPL-5500

Cat. No. Description Note

C83218✽

C83219✽

C83220✽

—

—

C812491

S050005 Developer cartridge Develo per and toner cartridge

S051029 Photoconductor unit —
C82334✽ LocalTalk with serial I/F module (see Note 3)
C83614✽ Interface cable RS-232C extens ion cable for C82334✽
C82335✽ Type-B EX box Type-B I/F card box (see Note 4)

Windows Printing System ROM SIMM Supports Window s Printi ng System
EPSONScript Level 2 ROM SIMM Supports EPSONScript Level 2 mode

(PostScript Level 2 compatible) fonts and
commands (see Note 1)

LQ/FX/I239X ROM SIMM Supports ESC/P 2, FX, and IBM

2390/2391 emulation modes

NLSP Bitmap 2 font ROM Supports local NLSP bitmap fonts

(see Note 2)

NLSP Scalable font ROM Suppor ts local NLSP scalable fonts

(see Note 2)

250-sheet lower paper cassette for the
EPL-5500 (A4/B5)

Lower paper cassette

C82307✽/

C82308✽

C82310✽/

C82311✽
C82312✽ LocalTalk card ( see Not e 5)

C82313✽ GPIB card (see Note 5)
C82314✽ COAX interface card (see Note 5)
C82315✽ TWINAX interface card (see Note 5)
C82324✽ Ethernet interface card for NetWare
C82328✽ FAX card (see Note 5)
C82331✽ Multi protocol Ethernet card (see Note 5)

Notes:

1. Requires added memory (RAM) over a total of 2 MB, including standard RAM.

2. NLSP font ROMs do not support ESC/P 2 and FX modes.

3. LocalTalk with ser ial I/F module (C82334✽ ) cannot be used with Type-B EX box (C82335✽).

4. Type-B EX box (C82335✽) cannot be used with LocalTalk with serial I/F module (C82334✽) .

5. Type-B EX box (C82335✽) must be installed while usin g the Type-B I/F card.

32 KB serial interface card (see Note 5)

32 KB parallel interface card (see Note 5)



(see Note 5)

1-2 Rev. B

EPL-5500 Service Manual General Description

1.2 SP ECIFICAT IONS

This section provi des statisti cal data for the EPL-5500.

1.2.1 Basic Specifications

Printing method: Laser beam scanning and dry electrophotogra phy
Resolu tion: 600/300 dpi
Printing speed: 6 ppm (letter/A4)
First printing ti me (A4/LT): Less than 20 seconds (face-up output)
Warm-up time: Less than 35 seconds

(at rated current and 23° C (73° F) temperature)

Paper supply: See Table 1-2.

Table 1-2. Paper Feed Methods

Capacity Using

Paper Supply

Standard built-in paper tray 150 A5, B5, A4, LT,

Manual feed slot 1 Any size feedable

Lower paper cassette (optional) 250 A4, B5 16 to 24 lb.

Notes:

1.

The weight in pounds (lb) is determined by the weight of 500 sheets cut to 17 × 22 inches;
1 g/m2 = 0.2659763 lb.

2. Paper size range: width 3 to 8.5 inches (76 to 216 mm)
length 5 to 14.0 inches (127 to 356 mm)

20 lb. (75 g/m2)

Paper

5 to 10 Monarch,

Pap er Si z e

GLT, EXE, LGL,
GLG, F4, HL

DL, C5, C6,
International B5,
Commercial-10

(Note 2)

Usage Thick ness

(Ream Weight)

16 to 24 lb.
(60 to 90 g/m2)

Envelopes made
of 20 to 24 lb.
(75 to 90 g/m2)
paper

16 to 42 lb.
(60 to 157 g/m2)

(60 to 90 g/m2)

Paper types: See Table 1-3.

Table 1-3. Paper Types

Rev. B 1-3

General Descript ion E PL-5500 Ser vice Manual

Standard paper Xerox 4024 DP paper

20 lb (75 g/m2)

Normal paper Regular photocopier paper

Bond paper
Recycled paper
16 to 24 lb (60 to 90 g/m2)

Special papers Card stock (90 to 157 g/m2)

Envelopes
Labels
Letterhead
Transparency (OHP) sheets
Colored paper

4.0 mm

Printable Area

4.0 mm4.0 mm

Figure 1-2. Printable Area

4.0 mm

1-4 Rev. B

EPL-5500 Service Manual General Description

Usability of special papers: See Table 1-4.

Tab le 1- 4. Usabi li t y of S pecial Pa pers

Input OHP Envelopes Labels Card Stock Letterhead

Standard built-in
paper tray

Manual feed slot P P P P R
Lower paper cassette N N N N P
R: Reliable feeding and good image quality.

P: Possible, but better avoided.
N: Not supported.

Paper feed alignment and direction: Center alignment for all sizes
Paper ejection: Face down
Output tray capacity: 100 sheets (face down)
Printa ble area (standard paper): See Figure 1-2.

Note:

Noise: Less than 35 dB(A), standby

Ozone density: Less than 0.01 ppm
Toxici ty: No toxicity e xists i n organi c photoconduct or (OP C), toner,

The actual printable area depends on the printer mode.

PPPPR

Less than 47 dB(A), operating

or plastic material s

Rev. B 1-5

General Descript ion E PL-5500 Ser vice Manual

1.2.2 Electrical Specifications
Table 1-5. Electrical Requirements and Ranges

Description 100 V Version 200 V Version

Rated voltage 100 ∼ 120 VAC 220 ∼ 240 VAC
Input voltage range
Rated frequency range
Input frequency range
Power consumption Less than 500 W Less than 600 W
Power consum ption while in

standby mode

90 ∼ 132 VAC 198 ∼ 264 VAC

50 ∼ 60 Hz
47 ∼ 63 Hz

Less than 15 W
(witho ut option)

1.2.3 Reliability Specifications

MPBF (Mean Prints Between Failures ): Over 25,000 sheets

Note:

MTBF (Mean Time Between Failures): 3000 power on hours (POH)
Jam rate: 1 out of 2,000 sheets or le s s (excluding multip le-s heet feeding)
Feed failure: 1 out of 2,000 sheets or le ss (excludi ng multip le-sheet fe eding)
Multiple paper feeds: 1 out of 500 sheets or less
Paper curl height: 30 mm (1.2 inches) or less
Leading edge bending (1 cm or more): 1 out of 1,000 sheets
MTTR (Mean Time To Repair): 30 minutes or less
Durability: 5 years or 180,000 sheets

MPBF indicates average number of pages printed bef ore occ urrence of pr oblem requiring
replacement or service.

1.2.4 Environmental Conditions for Operation (Including Imaging Cartridge)

Temperature:
Humidity: 15 to 85% RH

Altitude: 2,500 m (8,200 feet) or lower
Levelness:

Illuminance: 3,000 lux or less (Must not be exposed to direct sunl ight.)
Surrounding space: Printer should have at least 100 mm of clearance on its

10 to 35° C (50 to 95° F)

1°

sides and rear.

1.2.5 Environmental Conditions for Storage and Transportation

Temperature:
Humidity: 30 to 85% RH

Drop test: Clear to JIS Z0200-1987 Level 1
Vibration: Vibration frequency 5 to 100 Hz and 100 to 5 Hz

Resistance to atmospheric pressure: More than 61.3 KPa
Storage life: 18 m onths (followi ng date of manufactur e)

0 to 35° C (32 to 95° F)

Acceleration 1 G
Acceleration direction 3 direction

1-6 Rev. B

EPL-5500 Service Manual General Description

1.2.6 Ap p licab le St andards

Safety Sta ndards

120 VAC model: UL 1950, CSA 22.2 No. 950 Deviation 3
220/240 VAC model: EN 60950 (IEC950), NEMKO (IEC950), SETI (IEC950),

SEMKO (IEC950), DEMKO (IEC950)

Safety Regulations (Laser Radiation)

12 0 VAC model: FDA (NCDRH) Class 1
220/240 VAC model: VDE 0837 (Laser Class 1) (IEC825), SETI (IEC 825) , SEMKO

(IEC825), DEMKO (IEC825)

EMI

120 VAC model: FCC Part 15 Subpart B Class B, DOC Class B
220/240 VAC model: Vfg 243 (VDE 0878 Part 3,3 0)

EN55022 Class B (CISPR Pub.22 Class B)
CE marking, EMC

Others

Toner: No effect on human health (OSHA-TSCA, EINE CS)
OPC: No effect on human health (OSHA)
Ozone: Less than 0.01 mmp

other UL478 (5th edition)

Materials: SWISS environmental law (must contain no CdS)

1.2.7 Specifications for Consumables

Life: Develo per and toner cartridge: 3,000 pages

Photo conductor unit : 20,000 pages

Note:

In continuous printi ng mode wit h A4/letter p aper at a 5% image ratio (black/whi te ratio).
The life varies, depending on the printing mode (continuous or intermittent) and/or the
image ratio.

Environmental Conditions for Storage and Transportation

Temperat ure:
Humidity: 30 to 85% RH
Drop test: Height 76 cm (30.4 inches)

Vibration: Same as printer
Resistance to atmospher ic pres sure: More than 74 Kpa
Storage term: 18 months (following date of manufacture)

0 to 3 5° C (32 to 95° F)

1.2.8 Physical Specifications

Dimensions (Width × Depth × Height):
Printe r: 352 × 264 × 299 mm (13.9 × 10.4 × 11.8 inches)

Weight: Approx. 5 kg (11 lb), with consumables, excluding all options

Rev. B 1-7

EPL-5500 Service Manual General Description

1.2.9 Software Specifications

Built-in modes: HP LaserJet 4 emulation (P CL 5e)

EPSON GL/2 mode (GL-like mode)

Note:

EPSON GL/2 mode is similar to the GL/2 mode included in the HP LaserJet 4 emulation.
Table 1-6 shows the differences between EPSON GL/2 mode and the LJ4 GL/2 mode.
While in EPSON GL/2 mode, the operator can enter GL/2 mode without sending the
ESC %#B (Enter GL/2 mode) command. If the operator’s application software cannot
send the ESC %#B command, then use this mode.

Table 1-6. Differences between EPSON GL/2 and

GL/2 in the HP LaserJet 4 Emulation

EPSON GL/2 Mode

PCL mode Not available Initial mode
Paper eject Supports PG, AF commands Supported in PCL
Auto eject SelecType setting Not available
Reduced printing SelecType setting Available in PCL
Switch to PCL

(ESC %#A)
Reset (ES C E) Ejects paper and then initializes Ejects paper, switches to PCL,

PJL, EJL, and ES Supp orted Supported
Advance full page

(PG, AF)

Note:

Optional modes : EPSONSc r ip t Level 2 (PostScript Level 2 emulation) mode

Auxiliary software: Hex dump

Built-in fonts: See Table 1-7.

The EPL-5500 GL/2 mode features all the commands of the LJ4-GL/2 mode, plus a few
additional commands. The GL/2 mode emulates some of the HP-GL
etc.) commands. If the application software uses unsupported commands for the GL/2
mode, print cannot be assured.

FX (FX-870/ 1170, LX-100) emulation mod e
ESC/P 2 (Stylus 800/1000) emulation mode
WPS (Windows Printing System) mode

Status sheet
Font sample

Not supported Supported

Supported Not supported

GL/2 for HP LaserJet 4

Emulati on Mode

and then initializes



plotter (HP 7475A,

Table 1-7. Built-in Fonts

Resident Fon ts

Bitmap fonts

Line Printer16.66 cpi(Po rtrait)

Scalable fonts



Dutch
Dutch 801Bold SW C
Dutch 801Italic SW C
Dutch 801Bold Italic SWC
Swiss
Swiss 742Bold SWC
Swiss 742Medium Italic SW C

S: Supported, NS: Not Supported

801Roman SWC



742SWC

Applicable Mode

HP LJ4, GL/2

S

S
S
S
S
S
S
S

Rev. B 1-7

General Description EPL-5500 Service Manual

Table 1-7. Built-in Fonts (Continued)

Applicable Mode

Resident Fon ts

Scalable fonts

Swiss 742Bold Italic SWC
Swiss 721Rom an SWM
Swiss 721Bold SWM
Swiss 721Oblique SWM
Swiss 721Bold Oblique SWM
Dutch 801Roman SWM
Dutch 801Bold SW M
Dutch 801Italic SW M
Dutch 801Bold Italic SWM
Symbol SetSWA
More WingBatsSWM
CourierSWC
CourierBold SW C
CourierItalic SWC
CourierBold Italic SWC

S: Supported, NS: Not Supported

HP LJ4

GL/2

S
S
S
S
S
S
S
S
S
S
S
S
S
S
S

1-8 Rev. B

EPL-5500 Service Manual General Description

1.3 INTERFACE SPECIFICATIONS

The EPL-5500 is eq uip ped with the following externa l inter fac es :

❏ Par allel inte rfac e
❏ Optio n al Loca lTalk/serial interface
❏ Optio n al Type B interface with Type-B EX box

1.3.1 Parallel Interface

The parallel interface has the following two modes:

❏ Com patibility mod e (s ame as par allel in te rfac e for EPS ON’ s cu rre n t page prin te r)
❏ Rev er se mo de

1.3.1.1 Parallel Interface Compatibility Mode

System: STROBE synchronization, 8-bit par allel data tran sf er
Handshakin g: BUSY and
Connector type: P90-25027-1 (Amphenol) recept acle
Applicable plug: 57-30360 (A mph enol or equivalent)
Transfer spe e d : Approximat ely 400, 000 bytes/second (ma x.)
Signal timing: S ee F ig ur e 1-3.
Signal descript ion : See Table 1-8.

ACKNLG signals

DATA 1-8

STROBE

0.5

BUSY

ACKN LG

0.5 µ s
(minimum)

0.5 µ

s

(minimum)

VALID VALID

0.5

s (minimum)

µ

s (maximum)

µ

0 s

0.5 or 5 µ

s

(min.)

(minimum)

1 or 10

s

µ

(typical)

Figure 1-3. Compatibility Mode Signal Timing

Rev. B 1-9

General Description EPL-5500 Service Manual

Table 1-8. Parallel Interface Pin Assignments

Pin No. Signal Name I/O Description

STROBE

1

STROBE is a strobe pulse used to read data from the host
computer. The pulse width must be more than 0.5 µsec.

IN

Normally it is HIGH, and data is latched at the trailing edge of
this signal.

2-9

10

11

12

13
14
15
16

DATA 1-8

ACKNLG

BUSY

PE

SLCT
AUTO-FEED
NC
GND

DATA 1 to 8 are parallel data bits. Whe n the sig nal is HIGH, the
data bit is 1, and when it is LOW, the data bit is 0. The most

IN

significant bit (MSB) is DATA 8. The signal state must be
maintained for 0.5 µsec. on either side of the
active edge.

ACKNLG is an acknowledge pulse with an approximate width
of 1 or 10 µsec. This signal goes LOW when the data reception is

OUT

completed, which indic ates tha t the printer c an ac ce pt new data.
Timing with the BUSY signal is specified through SelecType.

The BUSY signal informs the host computer of the printer state.

OUT

When the signal i s HIGH, the pr i nter cann ot accept d a ta.
The PE signal indicates paper empty for the standard tray

OUT

selected through SelecType or command, or for the optional
paper cassette. Paper empty is indicated by HIGH.

OUT

Used in reverse mode.

IN

Not used.

—

Not used.

—

Logic ground level.

STROBE signal

17

18

19-30

31

32

33
34
35
36

CHASSIS GND

NC
GND

INIT

ERROR

GND
NC
+5
SLCT IN

Connected to the pr inter chassis . The print er chassis GND and

—

the signal GND ar e c onn ec ted to each other.

—

Not connected.

—

Ground level for the twiste d pair r eturn signal.

IN

The

STROBE signal is ignored when this signal is LOW.

This level goes LOW whe n the pr inter is:

• Out of paper

OUT

• Paper jam

• In the error state

• Off line

—

Same as for pi n s 19 t o 30.

—

Not used.

—

Pulled up to +5 V throu gh 1. 0K -ohm resistance.

—

Used in reverse mode.

1-10 Rev. B

EPL-5500 Service Manual General Description

1.3.1.2 Reverse Mode

Reverse mode for the EPL-5500 supports the IEEE-P1284 nibble mode. This printer can run in
reverse mode, in which the printer can inform the computer of its status with EJL and PJL
commands.

System: IEEE-P1284 nibble mode
Connector type: P90-25027-1 (Amphenol) recept acle
Applicable plug: 57-30360 (A mph enol or equivalent)
Signal descript ion : See Table 1-9.

Table 1-9. Parallel Interface Pin Assignment

Pin No. Signal Name I/O Description

1

STROBE

HostClk: This signal is a strobe pulse used to read extension

IN

request values from the host computer durin g n egot iat ion.

DATA 1-8

2-9

10

ACKNLG
BUSY

11

PE

12

SLCT

13

AUTO-FEED

14

15

NC

16

GND
CHASSIS GND

17

These signals are data bits of extension request values received
during negotiation. Th is printer suppo rts fo llowing v alues :

IN

0000 0100: Requ es t Device ID (sent in nibble mode)
0000 0000: Requ es t nibble mod e

OUT

PtrClk: Printer sends clock data.
PtrBusy: P rinter s ends da ta bits 3 and 7 during d ata tr ansfer to

OUT

host computer.
AckDataReq: Printer sends data bits 2 and 6 during data

OUT

transfer to host computer.
Xflag: Printer sends data bits 2 and 6 during data transfer to

OUT

host computer.
HostBusy: This signal informs the printer of the host computer’s

IN

state. When the signal is HIGH, the host computer cannot
accept data.

—

Not used.

—

Logic ground level.
Connected to the pr inter chassis . The print er chassis GND and

—

the signal GND ar e c onn ec ted to each other.

18

19-30

31

32

33
34
35

36

NC
GND
INIT
ERROR

GND
NC
+5
SLCT IN

—

Not connected.

—

Ground level for the twiste d pair r eturn signal.

IN

nInit: Fixed at HIGH level.
nDataAvail: Printer sending data bits 0 and 4 during data

OUT

transfer to host computer.

—

Same as for pi n s 19 t o 30.

—

Not used.

—

Pulled up to +5 V throu gh 1. 0K -ohm resistance.
1284Active: If this signal is set to HIGH, this printer is actively

IN

in P1284 (rev er se mode).

Rev. B 1-11

General Description EPL-5500 Service Manual

Compatibility Mode

Forward

Data

Transfer

ERR=HIGH

No da ta se nt

Host Busy
Data Not
Available

AUTO
FEED=LOW

STROBE

ACK and BUSY

SLCT IN=HIGH

ERR=HIGH

No da ta se nt

Forward
Idle

Negotiation

Reverse
Data
Transfer

Failed
Negotiat ion

Sending data

ERR=LOW

Sending data

AUTO
FEED=LOW

Request to
send data

Terminate

SLCT IN=LOW

ERR=L OW

Host Busy
Data
Available

AUTO
FEED=HIGH

Reverse
Idle

ERR=LOW

Figure 1-4. Parallel Interface State Switch Diagram

Figure 1-4 shows the switch diagram for the parallel in te rf ac e st ate.

Interrupt
Host

1-12 Rev. B

DATA
SEL-IN
STROBE

AUTO-FEED
ACKNLG

Peripheral Busy StatusBUSY

PE

SLCT
ERROR

HB DA Negotiation

HB DA or
HB DNA
(Note 3)

Idle or
Transfer

Bit 3 Bit 7
Bit 2 Bit 6

Bit 1 Bit 5
Bit 0 Bit 4

Peripheral Busy Status

Note 1

Note 1

Note 2

EPL-5500 Service Manual General Description

Figure 1-5 shows the negotiation timi ng char t .

DATA 00h or 04h
SEL-IN
STROBE

AUTO-FEED
ACKNLG

Peripheral Busy StatusBUSY

Current Peripheral StatusPE Note1

Note 2SLCT

Current Peripheral StatusERROR Note1

Compatibility Negotiation HB DA or

Figure 1-5. Negotiation Timing Chart

Notes:

1. This signal is set to HIGH when no data is being sent .
This signal is set to LOW during sending of data.

2. This signal is set to HIGH if the extension request value was 04h.

3. HB DA: Host Busy Data is Available
HB DNA: Host Busy Data is Not Available

Figure 1-6 shows the data transfer timing chart.

Notes:

HB DNA
(Note 3)

Idle or
Transfer

1. This signal is set to HIGH when no data is being sent .
This signal is set to LOW during sending of data.

2. This signal is set to HIGH, if extension request value was 04h.

3. HB DA: Host Busy Data is Available
HB DNA: Host Busy Data is Not Available

Rev. B 1-13

Figure 1-6. Timing Chart for Data Transfer

General Description EPL-5500 Service Manual

Figure 1-7 shows the t i ming chart for termination.

DATA
SEL-IN
STROBE

AUTO-FEED
ACKNLG

PE

SLCT
ERROR

Note 3

Peripheral Busy StatusBUSY

Note 1

Note 2

HB DNA, Idle,
or HB DA

Termination Compatibility

Figure 1-7. Termina tion Timing Chart

Notes:

1. The signal is HIGH when HB DNA.
The signal is LOW when HB DA.

2. The signal is set to HIGH, if the extension reques t value was 04h .

3. Idle = LOW.

Figure 1-8 shows the t i ming cha rt for in terr u pts .

Peripheral Busy Status

Current Peripheral Status

Current Peripheral StatusNote 1

DATA
SEL-IN
STROBE

AUTO-FEED
ACKNLG

PE

SLCT
ERROR

Note:

Peripheral Busy StatusBUSY

Note 1

Reverse Idle Interrupt

Figure 1-8. Timing Chart for Interrupts

The signal is set to HIGH, if the extension re que st value was 04 h.

HB DA Transfer

1-14 Rev. B

EPL-5500 Service Manual General Description

1.3.2 Serial Interfac e

This printer can use the optional LocalTalk/serial interface module.
Type: RS-232C/current loop
Transfer system: Full duplex
Synchronization: Asynchronous start-stop system

Start-bit: 1 bit
Stop-bit: 1 or 2 bits
Data length: 7 bits or 8 bits
Parity: Odd, even, or none

Protocol: X-ON/X-OFF (can be c ombined wit h D TR con t ro l)

DTR control (can be c ombin ed with X-ON/X-OFF)
Transfer speed: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, or 57600 bps
Error: Overrun error: Processed as missing data and replaced by “*”

Pari ty error: Repla ced by “*”

Framing error: Replaced by “*”

Breaking c h ar ac te r: Ignored
Signal descript ion : See Table 1-10.

Table 1-10. Serial Interface Pin Assignments

Pin No. Signal Name I/O Description

CHASSIS-GND

1

Connected to the pr inter chassis . The print er chassis GND and

—

signal GND are connected to each other.

TXD

2

RXD

3

5

CTS

7

SIGNAL-GND
TTY-TXD

17

DTR

20

Serial ASCII data output by the printer. It maintains the
“MARK” state (LOW level) between transmitted character

OUT

codes. Logic 0 is at HIGH level (SPACE) and logic 1 is at LOW
level (MARK).

Serial ASCII data input to the printer. It maintains “MARK”

IN

state (LOW leve l) betw een r ec eiv ed character codes.

IN

Always ignored.

—

Ground.
Current loop signal: HIGH impedance (SPACE) between pins

17 and 24 or X-ON signal sent across pins 17 and 24 indicates

OUT

that the printer is ready to accept data; LOW impedance
(MARK) or X-OFF signal being sent indicates that the printer is
busy.

Signal output by printer. When the DTR signal is HIGH, the
printer can receive the RXD signal. The SelecType settings do
not specify DTR control, the signal level is HIGH while printer

OUT

power is on. When the SelecType setting is used for DTR
control, DTR goes LOW in case of any error conditions. The
data (RXD) from host computer must be stopped within 128
characte r s after DTR goes LOW.

23

TTY-RXD Retu rn

24

TTY-TXD Retur n

25

TTY-RXD

Note :

Rev. B 1-15

The DTR state can be selected through printer settings.

—

Current loop signal: Current return for pin 17

—

Current loop sign a l : Inp u t data current loop

IN

Current loop signal: Current return for pin 25

General Description EPL-5500 Service Manual

Handshaking

When the vacant area for data in the input buffer drops to 256 bytes, the printer outputs an X-OFF
code or sets the DTR signal level to LOW, indicating that the printer cannot receive more data.
Once the vacant area for data in the buffer recovers to 512 bytes, the printer outputs an X-ON code
or sets the DTR flag to HIGH, indicating that the printer is again ready to receive data.

Protocol

There are two types of protocols, as listed below, and each of them can be designated by SelecType
independentl y.

❏

DTR/DSR protocol

SelecType is used to execute the DTR/DSR control protocol. The DTR signal is set to HIGH when
the printer is ready to receive data, and to LOW when conditions indicate an error or that the
receiving buffer is full.

When the error is cleare d a nd the print e r ret urns to on-line mode, the signal returns to HIG H. When
SelecType is used to set the DTR control OFF, DTR is always set to HIGH. The printer transmits
TXD only when DSR is at the HIGH level (DSR is always considered HIGH when the SelecType
setting for DSR is OFF). X-ON/X-OFF tran sm issi on is indepen d en t of the DSR state.

❏ X-ON/X-OFF (DC1/DC3) protocol
SelecType is used to execute the X-ON/X-OFF protocol. The X-OFF (DC3) code is output if status

indicates an error, and the printer warns the host to stop data transmission within 256 characters.
No further X-OFF codes are sent in response to additional data received from the host after the
X-OFF code has been sent once. The X-ON (DC1) code is output after all conditions given in the
error are cleared .

When the remaining capacity of the receive buffer reaches 512 characters, X-OFF (DC3) is output
once. It is sent only once, even if there are multiple errors. The printer goes on line automatically at
power on, and outputs an X-ON code. Transmission of X-ON/X-OFF codes can be defined by
SelecType.

1-16 Rev. B

EPL-5500 Service Manual General Description

1.3.3 Optional LocalTalk Interface

This printer can use the optional LocalTalk/ serial int er fac e mod ule.
Type: LocalTalk

Signal level: Same as RS-422 sign al level
Protocol: X-ON/X-OFF (can not be co mbin ed wit h DTR c on trol)

DTR control (cann ot be combined with X-ON/X-OFF)
Transfer speed: 230.4K bps
Signal descript ion : See Table 1-11.

Table 1-11. LocalTalk Interface Pin Assignments

Pin No. Signal Name I/O Description

DTR

1

Signal output by the printer. When the DTR signal is HIGH, the

OUT

printer can receive the RXD signal.

2

CTS
TXD-

3

4

GND
RXD-

5

6

TXD+

7

NC

8

RXD+

IN

The printer transmit s the data through T XD while CTS is HIGH.
Serial ASCII d a ta output f rom the pri n ter.

HIGH level; whe n SD+ voltag e is high er than t h e SD - voltage.

OUT

LOW level; when SD+ voltage is les s th an the SD - voltage.
Logic 0 is SPACE and logic 1 is MARK. The state must be
main tained be tween transmitted character codes.

—

Ground.
Serial ASCII data input fr om c ompu t er .

HIGH level; when RD+ voltage is high er than RD - voltage.

IN

LOW level; when RD+ voltage is les s th an RD - vo ltage .
Logic 0 is “SPACE” and logic 1 is “MARK” state must be
main tained be tween transmitted character codes.

OUT

Refer to TXD-.

—

No connect.

IN

Refer to RXD-.

Rev. B 1-17