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EPSON TERM NAL PRINTER
S~hs. 800+
SERVICE MANUAL
EPSON
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 toensure theaccuracyof thecontentsof this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them. The above notwithstanding SEIKO EPSON can assume no responsibility for any errors in this manual or the consequence thereof. Epson and Epson ESC/P are registered trademark of Seiko Epson Corporation. General Notice: Other product names used herein are for identication purposes only and maybe trademarks of their respective campanies.
@Copyright 1994 by SEIKO EPSON CORPORATION Nagano, Japan
-i-
PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1) personal injury and 2) damage to equipment.
DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury.
Great caution should be exercised in performing procedures preceded by DANGER Headings.
WARNING Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/ maintenance procedures.
1.
ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURE. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.
2.
3.
1. 2.
REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS. 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.
3.
4.
5.
- ii -
PREFACE
This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of Stylus 800+. The instructions and procedures included herein are intended for the experience repair technician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows:
CHAPTER 1. GENERAL DESCRIPTION
Provides a general product overview, lists specifications, and illustrates the main components of the printer.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of printer operation.
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
Includes a step-by-step guide for product disassembly and assembly.
CHAPTER 4. ADJUSTMENT
Includes a step-by-step guide for adjustment.
CHAPTER 5. TROUBLESHOOTING
Provides Epson-approved techniques for adjustment.
CHAPTER 6. MAINTENANCE
Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.
APPENDIX
"Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.
The contents of this manual are subject to change without notice,
-
iv -
REVISION SHEET
Revision Rev. A issue Dste April 20, 1994 Revisbn Page Ist issue
`+,c)
4. .
-'
"v-
TABLE OF CONTENTS
CHAPTER 1. CHAPTER 2. CHAPTER 3. CHAPTER 4. CHAPTER 5. CHAPTER 6. APPENDIX GENERAL DESCRIPTION OPERATING PRINCIPLES DISASSEMBLY AND ASSEMBLY ADJUSTMENT TROUBLESHOOTING MAINTENANCE
- vi -
Chapter 1 General Description
Table of Contents
1.1 FEATURES 1-1
1-3 1.2 SPECIFICATIONS 1.2.1 Printing Specifications. . . . . . . . . . . . . . . . . . . .'. . . . . . . . . . . . " s ----- 1-3 1.2.2 Paper Handling Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1.2.3 Paper Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " . 1-6 1.2.4 Ink Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " .. ....0.. s " 0.. 1-8 1.2.5 Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "".... 1-9 1.2.6 Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ."."".. 1-9 1.2.7 Reliability. . . . . . . . . . . . . . . . . . . . . . . . . . . . " . . . s Q " " .0. . s .- " - " " " 1-10 1.2.8 SafetyApprovals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-".""-".= 1-10 1.2.9 Physical Specifications . . . . . . . . . . . . . . . .. .. .. .. ... ... .". -"s"- 1-10 1.3 INTERFACE SPECIFICATIONS 1-11
1-13 1.4 PRINTER OPERATIONS 1.4.1 Control Panel.... . . . . . . . . . . . . . . . .. ... ... ..".-OS --.oo.mS"m" 1-13 1.4.2 Panel Operation atPowerOn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 . 1.4.3 Default Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -" .. 0.-. " 1-14 1.4.4 Initial InkCharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..1-15 1.4.5 ErrorConditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .."...-"" 1-15 1-16 1.5 MAIN COMPONENTS 1.5.1 Main Control Board (C134 MAIN Board). . . . . . . . . . . . . . . . . . . . . . . . 1-16 1.5.2 Power Supply Unit (C106 PSB-B/PSE-B Board). . . . . . . . . . . . . . . . . . 1-17' 1.5.3 Printer Mechanism (M-4811). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
List of Figures
Figure 1-1. View of the Stylus 800+. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Figure l-2. Nozzle Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Figure 1-3. Printable Area - Cut Sheet (Built-in Sheet Feeder). . . . . . . . . . . . . 1-7 Figure 1-4. Printable Area - Cut Sheet / Envelope (Manual Insertion Slot) . . . . 1-7 Figure 1-5. Adjust Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-. . " . . 1-8 " Figure 1-6. Temperature / Humidity Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 Figure 1-7. Data Transmission Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 I Figure 1-8. Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 Figure 1-9. C134 MAIN Board Component Layout . . . . . . . . . . . . . . . . . . . . . 1-16 Figure 1-10. C106 PSB-B/PSE-B Board Component Layout . . . . . . . . . . . . .1-17 Figure 1-11. Printer Mechanism (M-4811). . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Rev. A
l-i
Table 1-1. Consumable forthe Stylus 800+. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Table l-2. Feature Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Table l-3. Print SpeedandPrintable Columns . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-4. Character Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Table 1-5. Adjust Lever Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 Table l-6. Requirements for Operation andStorage . . . . . . . . . . . . . . . . . . . . . 1-9 Table l-7. Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 Table l-8. Signal andConnector PinAssignments . . . . . . . . . . . . . . . . . . . . . 1-11 Table l-9. Default Setting Item. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 Table 1-10. Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
-. .: ;:. , @
@
` l-ii
Rev. A
Stylus tUW+ service Manual
General Description
1.1 FEATURES
The Stylus 800+ is a serial inkjet printer that uses a newly developed inkjet technology to produce superb quality output with high-speed printing. The major features of this printer are: ~ High print quality from a MACH (Multi-Layer ACtuator Head) inkjet technology. D Fast printing of LQcharacters at 165 cps and draft characters at 250 cps. D Compact design saves precious work space. D Built-in auto sheet feeder with a capacity for a maximum of 100 cut sheets (either A4 or letter). D Equipped with4 scalable fonts, 5 bitmap LQ fonts, and 1 draft font, standard. Cl 9 character tables for the standard version 15 character tables for the NLSP (National Langauage Support) version. The figure below shows a view of the printer.
Printer cover
control panel
Paper separator Paper feeder cover
parallel int let
Figure 1-1. View of the Stylus 800+ Table 1-1. Consumable for the Stylus 800+
I
Part No. S020025
I
Description Ink cartridge
I
Type
I Black ink cartridge
I I
Rev.A
1-1
Gomrd oescf@knl
wh18ao& Su'v&ohhud
Table 1-2. Feature Comparison
Table 1-2 shows the differences in features for the Stylus 800 and Stylus W+.
Function/SpecWation LQ Fonts (10 cpi) Printing Spaed Draft Fonts (10 cpi) Printing Speed
stylus Soo 150CPS cannot printing Roman ` sane serif Courier Prest"* script
stylus SO& 165 Cps 250 Cpe Draft Roman Ssns Serif Courier Prestige script Roman T Saris serif sane Serif H
Resident Bitrnsp Fonts
Rasident Scalable Fonts
Roman T ~= Saris Serif H
n
..,,', <,,.
. c'.1
1-2
Rev. A
Stylus 800+ service Manual
GenwW Description
1.2 SPECIFICATIONS
This section provides detailed statistics for this printer.
1.2.1 Printing Specifications
Print system: Nozzle configuration:
17/360 II , #1 ~
Ondernand inkjet system 48 nozzles (12 nozzles x 4 staggered columns)
60/360 1, 12/3 ,, I A #2y
`o %
I #3 ,+ i I i i i i i i i i i hi
I
i
60 i ~$ i ' i #4 i i' i ' `d i i i I
` 9 i
`O=a
0
Paper feed
direction
#45
#'$6Y#47~
Print direction: Print speed and printable columns:
i,48d)
Figure 1-2. Nozzle Configuration
Bidirectional printing with logical seeking control See table below.
Tabie 1-3. Print Speed and Printabie Coiumns
Character Pitch 10 cpi 12 cpi 15 cpi 17 cpi (10 cpi/ condensed) 20 cpi (12 cpi/ condensed) Printable Columns 80 96 120 137 160 Print Speed (LQ) 165 CPS 198 C@ 246 @s 283 Cpe 330cps Print Speed (Draft) 250 Cps 300 Cps 375 Cps 429 Cps 500 Cps
Rev. A
14
Character sets: Character tables:
Legal and 14 international character sets. See the table below.
Table 1-4. Character Tables
Chamcter Table Italic PC437 {lJ.S./Standard Eumtw) PC850 (Multilingual) PC880 (Portuguese) PC883 (Canadian-French) PC885 (Nordic) PC881 (Iceland) PC437 Greek PC851 (Greek) PC852 (East Eurme) PC853 (Turkish) PC855 (Cyrillic) PC857 (Turkish) PC888 (Russian) PC889 (Greek) Abicornp BRASCII MAZOWIA
(Poland)
*
standard Veraion I
NLSP Vewaion
o o
1010
1
1
0 0
x
o
I
I
o x o x o x Ixlo x o x o
Ixlo
x
x
x x
o o o o
Code MJK (Czecho/Sbvakia)
ISO 8859-7 (Greek)
ISO Latin IT (Turkish) Bulgaria
(Bulgaria) x Not
Iolx x o x o I x o x o
Ixlo
x
o
I
o supported
Fonts:
supported (lOcpi/12 cpi/15cpi) (10/12/15/proportional) (10/12/15/proportional) (10/12/15) (10/12/15) (10/12/15)
Bitmap fonts -- - ii50N Draft - EPSON Roman - EPSON %llS %if - EPSON Courier - EPSON Prestige - EPSON Script
Scdiablefmts -- - EPSON Roman
- EPSON %s Serif - EPSON Roman T - EPSON Saris SerifH
8-32 points (units= 2 points) 8-32 points (units= 2 points) 8-32 points (units= 2 points) 8-32 points (units= 2 points)
14
Rev. A
Stylus S00+ Servke A4snusl Print mode:
General Description
For bitrnapfonts -- Selection and mixture of the following modes are allowed. - Print quality (LQ) - Character pitch (10/12/15 cpi or proportional) - Condensed (not available with 15 cpi character pitch) - Double height - Double width - Double strike - Emphasized - Underline - Italic - OverScore - Double underline - Shadow / outline - Strike through For scalable fonts -- - Emphasized - Italic - Double underline - Strike through - Double strike - Underline - OverScore - Shadow / outline
Control codes: Input buffer
Esc/P2 32KB or 8KB (selected using the default setting labeled "Mixed text/ graphics mode")
1.2.2 Paper Handling Specification
Feeding system: Friction feed from the built-in sheet feeder or manual insertion slot. Note: The following operations are nota//owed. 1. Reverse feeding w"thin 3mm (O. 12inches) ftvm the top edge or 16 mm (0.63 inches) from the Mtom edge of the paper. 2. Reverse feeding beyond 7.9mm (0.3inches). 1,6 or l&in& feed or Prow ammable in 1A60-inch minimum increments. Built-in sheet feeder (front entry) Manual insertion slot (top-rear entry) 87 rns (at
1/6-inch feed
Feeding pitch: Paper path: Feeding speed:
pitch)
Rev. A
1
-
5
General Deecriptbn
Slykls m ~Mmud
1.2.3 Paper Specifications
Usable paper: cut sheet With the built-in skt feeder -- For European/Paafic version: size: A4(WXL :210 mm(83")x 297mm(11.T')) For U.S. version: Letter (W x L: 216 mm (85") x279 mm (11.0")) 0.065- o.14mrn(o.oo26 - 0.0055") `IhiClmess: 64- 90g/m2 (18 - 241b. / 55- 78 kg) weight Quality: Bond paper, Ph&Ompier paper With manual insertion -- 182-216 mm (7.2 - 8.5") Width: 257- 297mm(lo.1 - 11.7") Length: O.(M5- 0.11 rnm(O.0026- 0.0043") Thickness: 52- 90g/m2 (14 - 241b / 45- 78kg) weight Quality: Bond paper, Photocopier paper Size: Thickness: #6 (w X L : 166 mm (6%") X %? mm (354")) #lI)(wx L :240 mm(9k") X 104mm(41Z$")) 0.16-052 mm(O.0063 - 0.020")
Envelope
Note: Variatbnsrnpaperthkkness W"thi. theprintaMearea mustbe 0.25mm (0.CMW~ orless. weight: Quality: 45- 90g/m2 (12- 241b.) Bond paper, Air mail
Notes 1. Envekpesare usable only Mthmanualinsertion feed. 2. Ptintingon envelcpeskguamnte edonlyatmxmal temperature and humidity. 3. lnsertenve@esinto themanualinsertion slotsidewaya.
14
Rev. A
Stylus &MO+ Service Manual Printable area: Cut sheet (with built-in sheet feeder)
B (Left margin) ,
General Description
c
-- t--
(Right margin) ,
--
-4
Printable area
A (Top margin)
-1
B (Left margin)
D (Bottom margin)
-+
Figure 1-3. Printable Area -- Cut Sheet (Built-in Sheet Feeder)
Cut Sheet / envelopes (with the manual insertion slot)
c
D ~Right margin) s
-- t-
Printable area
J
A (Top margin)
D (Bottom margin)
Figure 1-4. Printable Area -- Cut Sheet/ EnveIoW (Manual Insertion Slot)
Notes: A: The minimum top margin= 3 mm (O. 12") B: The minimum Ieflmargin = 3 mm (0.12") C: The minimum right margin is A4 size= 3.0 mm (O. 12") Letter size = 9.0 mm (0.38~ Manual insertion =3 mm (O. 127 (Paper widths A4 (210 mm)) Manual insertion = `Paper w"dth" 207 mm (8.3") (Paper width 2 A4 (210 mm)) D: The minimum bottom matgin = 13 mm (0.51")
Rev. A
1-7
-nerd Description Adjust lever settings:
stylus
8m+ ~ Mstnd
The adjust lever, attadwd to the carriage unit must be set to proper position for the paper thickness, as shown below.
Table 1-5. Adjust Lever Settings
Lever Position Left Right Paper Type Cut Sheets Envelopes Papsr Thkknsss
0.065-0.11 nun (0.0026- 0.0056")
0.16- 0.52 mm (0.0063- 0.020")
4
Plain paper, bond paper \ /
Envelopes
(Ox : ,., :,, , ,, ,, In . . . . . . -----0
\
Figure 1-5. Adjust Imer 1.2.4 Ink Cartridge
Type: Ink color: Print capacity: Ink capacity: Life: Exclusive cartridge (SOXXX25) Black 0.7 million characters (LQ) 29.0 +o.5/-l.occ The effective life from the rndicated production date is: 2years (total time inpackageandafterunpacking) 6 months(afterunpacking) -30- m c (-22 - 104° F) (Up to 1 month at W C (14W P)) Transport -- -30- WC (-22 - 140" F) (Up to 1 month at 40° C (104° P) or 120 hours at 6(T' C (140' P')) Note: Ink freezes in the rnk cartridge if kept below-C (26.6° 9. If requires sewal hours to unfreeze at mom temperature (2P C(77 9). Storage -- W i d t h 28.5mm(l.12") Depth 54.5 mm (215") Height 38.5 mm(l.52")
Temperature conditions:
c
`:". \
Dimensions:
Stylus 800+ service Manual 1.2.5 Environmental Conditions
Ganwd Description
Table 1-6. Requirements for Operation and Storage
Description Temperature Humidity Resistance to shock Resistance to vibration Note: Operating 10- 35° C (50 - 95° F)*l 20- 80% RH " '" 1 G, within 1 ms 0.15 G, 10-55 Hz
1 3
Storage -20- 50° c (-4 - 122° F) q 2 5- 85% RH `2"3 2 G, within 2 ms q 2 0.50 G, 10-55 Hz q 2
*7 = Operating conditions must be h this range shown h the figure Mow. *2= When the pnnteris in the shipping container. *3= Without condensation.
Humidity (%RH) Print assured range
80%
ss~o
*o'Y.
10" c
(5o" F)
27" C (80" F)
35" c (95" F)
"c
("F)
Figure 1-6. Temperature/ Humidity Range 1.2.6 Electrical Specifications Table 1-7. Electrical Specifications
Item Rated voltage Input voltage range Rated frequency range Input frequency range Rated current Power consumption 120 V Version 120 VAC 103.5- 132 V 50-60 Hz 49.5 -60.5 Hz 0.5 A Approx. 13 W (self-test with 10 cpi LQ characters) 10 MQ, minimum (applying 500 VDC between AC line and chassis) 1000 VAC rms -1 minute or 1200 VAC rms -1 second (between AC line and chassis) 220-240 V Version 220-240 VAC 198-264 V 50-60 Hz 49.5 -60.5 Hz 0.3 A Approx. 13 W (self-test with 10 cpi LQ characters) 10 MQ, minimum (applying 500 VDC between AC line and chassis) 1500 VAC rms -1 minute (beween `c `ine and Chasis)
Insulation resistance
Dielectric strength
Rev. A
14
Gsnsrd Dssaiption
stylus 8@+ ssfwicsmm4d
1.2.7 Reliability
MTBF: Printhead life: Total print volume: 4000 power on hours (POH) at a duty cycle of 10'Yo 1 billion dots per nozzle 75000 pages (with A4 or letter-size paper)
1.2.8 Safety Approvais US. version: Safety standards:
European version:
UL1950 with D3 CSA22.2 m EN 60950 m IEC 950 (SEMKO, DEMKO, NEMKO, SETI)
Radio frequency interference (lWI): US. version: European version: FCC part 15, subpart B, ChSS B Vfg. 243 (VDE 0878 part 3, part 30) EN 55022 (CISPR Pub.22) ClaSS B -iii." c)
1.2.9 Physicai Specifications
Size(Wx DX H ) : Weight 435 X 264 X 154 mm (17.1 x 10.4x 6.1 inches) Approximately 4.8 ka excluding the ink cartridge
1-1o
Rev. A
Stylus 800+ service Manual
General Dasoription
1.3 INTERFACE SPECIFICATIONS
The Stylus 800+ is equipped with an 8-bit parallel interface, standard. Data format: Synchronization: Handshaking: Signal level: Adaptable connector: Data transmission timing: 8 bit parallel STROBE pulse synchronization By BUSY and ACKNLG signals TI'L-compatible level 36-pin 57-30364) (Amphenol) or equivalent See Figure 1-7. h i
ACKNLG
[
DATA
)
Figure 1-7. Data Transmission Timing
Table 1-8 shows the comector pin assignments and signal functions of the 8-bit parallel interface.
Table 1-8. Signal and Connector Pin Assignments
Pin No. 1 Signal Name STROBE
I/o
1
Description The STROBE pulse is used to read data from the host computer. The pulse width must be 0.5p.sor more. Normally, it is HIGH, and data is latched with rising edge of this signal. DATA 1-8 are parallel data bits. When one of these signals is HIGH, the data bit is 1; when LOW, the data bit is O. The most significant bit (MSB) is DATA 8. The signal state must be maintained for 0.5 p.s on either side of STROBE signal's active edge. ACKNLG is the acknowledge pulse, with a width of approximately 10 p.s. This signal goes LOW on completion of data reception to indicate the printer is ready to receive further data. The BUSY signal informs the host computer of the printet's status. When this signal is HIGH, the printer cannot accept futiher data. This signal indicates whether paper is available in the printer or not. A HIGH level indicates no paper. Pulled up to +5 V through a 1.OK S2 resistor in the printer. If this signal is set to LOW, the printer automatically performs one line feed upon receipt of a CR (carriage return) code. The status of this signal is checked only at power on and initialization Not USed.
2-9
DATA 1-8
I
10
ACKNLG
o
11 12 13 14 15
BUSY PE SLCT AFXT NC
o o o
I --
Rev. A
1-11
Garleml Descdption
Styhm m Sutdc9 Msmd
Tabie 1-8. Signai and Connector Pin Assignments (Continued) I I I Description Pin No. Signai Narno W
16 17 18 19-30 31 32 33 34 35 36 Note: I GND CHASSIS-GND Nc GND m ERROR I GND -- I Signai ground. -- -- -- i Chassis ground. (i30th chassis andsignai ground are connected in the printer.) Not used. Twisted-pair return signai ground. if this signai go& LOW, the printer is initialized. The pulse width of this signai must be 50 @ or more. This signat goes LOW if the printec q has a fatai wmr. . runs out of paper.
o
I
NC
! -- I Not used.
--
1
-- I Signai ground.
1 ,
+5 v
Puited up to +5V through 1.OKQ resistor in the printer.
l--
-- I Not used (reserved).
Z5e &ection of tie signal h as viewed tkom the printer.
c
;'
`,
%, . @
1-12
Rav. A
Stylus &WO+ Sarvke Manual
General Dsscrlptkm
1.4 PRINTER OPERATIONS
This section describes the basic operations of the printer.
1.4.1 Control Panel
The control panel for this printer contains five non-lock type push buttons and nine LED indicators for easy ope;ation of the various printer functions. O Data O Paper Out
0 Ink Out
O Economy O Condensed
E=El
[:: 10
II
000 m Draft ourier
i. B-B Buttons Pause
`on' FIUl
Reset I.oadl E j e c t
m
San:s H ( S) #' D,..,,
omarIT S)
lwum Saris Sarif
Prestige
scriDt
" Pause
I
I
Figure 1-8. Control Panel
Switches printer status between printing and no printin~ if there is print datz-in the input buffer. When you hold down this button and the Alt button in pause mode for 2 seconds, the printer initiates printhead cleaning. Selects economy or condensed printing alternately. Also works as a reverse micro feed button, if the Alt button has been pressed. Selects one of the available fonts. Also works as a forward micro feed button, if the Ait button has been pressed. When you press this button, the printer either loads new paper into the printer or ejects paper currently in the paper path. Also works as a reset button, if the Ah button has been pressed. This button alternates functions of certain buttons. When you hold down this button in pause mode for 3 seconds, the printer moves the carriage to the ink cartridge installation/replacement position.
Economy/Condensed Font Load/Eject
Alt
Indicators Pause Data Paper Out Ink Out Economy/Condensed Font Lights when the printer is in pause mode. Lights when there is print data in the input buffer. Lights when the printer is out of paper. Blinks if a paper jam occurs. Lights when the printer detects an ink end in the ink cartridge. Blinks when the ink level becomes low. This LED shows the currently selected mode. Indicates the currently selected font. 1-13
Rev. A
Gen9m/ Lkscd@n
SiJdu88m+ ~ Wnual
1.4.2 Panel Operation at Power On
You can turn on the following functions at power on by holding down buttons cm the control panel. Self-test mode: Hex dump mode: Start self-test printing by turning the printer on while holding down the Font button (LQ self-test) or LoadEject button (Draft self-test). Start the built-m hexadwirnal data dump print mode by turning the printer on while holding down (he Font and LOWE~ buttons. Once this mode is selected, the printer pMts all received data m hexadecimal hrnat. Start printing of a demonstration page by turning on the printer while holding down the Ah button. Enter smudge prevention mode by turning on the printer while holding down the AH and Font buttons. If the paper has a tendency to smudge during high duty printins you can prevent smudges using this feature. Jn this mode, the printer waits a few seconds after printing a line to line feed.
Demonstration mode: Smudge prevention mode:
Other functions that can be activated from the control panel at power on, such as the default setting mode and the initial ink charge mode, are described in the sections that follow.
,. 0
.."', ,,..
1.4.3 Defauit Setting
The printer lets you set and save some default settings that it will start with after every initialization. You can define the settings in the table below in default setting mode. Start default setting mode by holding down the Ecofimy/Condensed button while tuming-6n the printer.
Tabie 1-9. Default Setting ttem
Menu Contents Character Table 4uto Print Direction Description Selects the character table ON: Print direction is selected automatically for optimal print quality (alignment). OFF: Depends onthe ESC U command. ON: For netvvorkenvironments, such as LocalTalk. (Thne+xh printing ie disabled.) ON: For normal environments. (Time-out printing is enabled.) ON: To ensure proper printing ofimagescontaining graphics and ecalable fonts using certain applications, ~lh as MS Wotd or WordPerfect version 5.1 or eartier. OFF: For normal use. ON: Line feed operation is performed automsticaltyupon receipt of the CR code. OFF: No line feed operation with CR code. ON Fectoty Setting
Network l/F Mcde
OFF
c)
Mixed Text/ Graphics Mode
OFF
Auto Line Feed Note:
OFF
q 1 = /fset to ON, the capcityof input bufferh finu'tedto 8KB.
1-14
Rev. A
Stylus 800+ Setvica Manual
General Daacription
1.4.4 Initial Ink Charge
When the printer is setup for the first time, the printer's entire ink supply path must be filled with ink by performing the initial ink charge operation, as described below. 1. Be@ initial inkchargeby pressing the Alt and Pa~butions andtirningon the pfiter. 2. Install the ink cartridge. 3. Press the Alt button. The Pause LED blinks while the initial ink charge operation is in progress, and when it completes, the printer automatically becomes ready.
s The ink cartridge must be installed immediately afler unpacking the package. N Do not perjorm the initial ink charge operation more than twice on the same printer. Otherwise, the operation consumes too much ink in the cartridge and shortens the life of the waste ink tank.
1.4.5 Error Conditions
The printer detects various errors and indicates them with the LED indicators and the buzzer.
Table 1-8. Error Codes
Error Paper LED Ink End LED Pause LED Buzzer Recovery Load paper and press the following buttons: 1. Pause 2. Load/Eject Same as above. Press Pause and replace the ink cartridge with a new one. Then, press Pause again to resume printing. V Replace the ink catlridge and press Pause. Install the ink cattridge and press Pause. Tum the printer off and back on again. Service maintenance required. (Replace the waste ink absorbing material and reset the protect munters.)
Paper end Paper jam Ink low q 1
ON BLINKS OFF
OFF OFF BLINKS
OFF OFF --
~ ~hon ~wp
3 short beeps No beeps a Shoti ~ps
Ink end No ink cartridge Carriage error Waste ink tank over-flow Notes:
OFF OFF OFF
ON ON OFF
OFF OFF OFF
3
`hod be~
~ ~ng beep
OFF
ON
BLINKS
3 short beeps
"1: This is not treated as an error. q 2: It is not necessary to replace the ink caflndge until the printer detects the Ink End error.
Rev. A
1-15
1.5 MAIN COMPONENTS
The main components of this printer are:
o PMtermechanl"sm (M-4611)
Cl Main control board (C134 MAIN Baud) 0 Power supply unit(C106PSB-B/C106 PSE-B Board) 0 Control panel 0 Housing
1.5.1 Main Control Board (C134 MAIN Board)
The C134 MAIN board is the main controller of the Stylus 800+. It takes charge of interfacing with the host computer and processing received print data, as well as control of the whole printer mechanism. This board consists of the following components
CPU (ICl)
Gate array (IC3) Program ROM (IC4) CG ROM (IC7/8) RAM (n) EEPROM (IC1O) CR motor driver (IC13) PF motor driver (QM1)
16-bit CPU ~141F-20) 19.6608 MHz operating clock E05BO0 IM-bit EPROM or IM-bit mask ROM 4M-bit mask ROM M40B21 (IC8 / for standard versicm) 8M-bit mask ROM M80A71 (IC7 / for NISP version) IM-bit PSRAM IK-bit (64x 16 bit) EEPROM Hybrid IC SMA7024ME Constant current unipolar drive Hybrid IC SMA6501 Constant voltage unipolar drive CR Motor Driver (IC13) Fr~
/ 1
I
Program ROM (IC4
\ I
o..,
..>s -.;:.
ml, I o n I), I t ` [ 0 I \ /
H CG ROM (Ica)
(!W!_@L \ \
\\
@teArray(lc3)
~ CG ROM (IC7)
Figure 1-9. C134 MAiN Board Component Layout
1-16
Rev. A
Stylus S00+ Sarvica Manual
General Daacription
1.5.2 Power Supply Unit (C106 PSB-B/C106 PSE-B Board)
The power supply unit converts input AC voltage and generates the different DC voltages required by the printer mechanism and other electrical circuities. The C106 PSB-B board is for 120 VAC input, and the C106 PSE-B board is for 220 to 240 VAC input.
Figure 1-10. CI06 PSB-WPSE-B Board Component Layout 1.5.3 Printer Mechanism (M-4811)
The M-4811 printer mechanism is specifically designed for the Stylus 800+. It consists of the carriage assembly, which includes the printhead and the ink supply system, the carriage motor, the paper feed motor, the paper feeding mechanism, and the pump mechanism.
Figure 1-11. Printer Mechanism (M-4811)
Rev. A
1-17
Chapter 2 Operating Principles
Table of Contents
2.1 OVERVIEW 2-1
2-1 2.2 PRINTER MECHANISM OPERATING PRINCIPLES 2.2.1 Printer Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2.2 Carriage Drive Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 2.2.2.1 Adjust Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 2.2.3 Paper Feed Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 2.2.4 Ink System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " " . . 2-6 2.2.5 Pump Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2.2.6 Cap Mechanism.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .2-9 2-1o 2.3 OPERATING PRINCIPLES OF THE CIRCUITS 2.3.1 Operating Principles of the Power SupplyCircufi . . . . . . . . . . . . . . . . .2-10 2.3.2 Operating Principles of the Main Control Circuit . . . . . . . . . . . . . . . . . . 2-12 2.3.2.1 Reset Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-I3 2.3.2.2 SensorCircuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-13 2.3.2.3 InkEnd Detection . . . . . . .....:... . . . . . . . . . . . . . . . . . . . . 2-14 2.3.2.4 Carriage MotorDfiveCircuh . . . . . . . . . . . . . . . . . . . . . . . . . . .2-15 2.3.2.5 Paper Feed Motor DriveCircufi. . . . . . . . . . . . . . . . . . . . . . . . .2-16 2.3.2.6 Printhead DriveCircuh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-I7 2-18 2.4 INK SYSTEM MANAGEMENT 2.4.1 InkOperations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... ... ....s" 2-19 --2.4.1.1 PowerOnOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . z-19 2.4.1.2 Cleaning Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20 2.4.1.3 Standby Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20 2.4.1.4 Initial Charge Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21 2.4.1.5 Refresh Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21 2.4.1.6 Cleaner Blade Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22 2.4.1.7 InkCartridge(l/C) Replacement Operation. . . . . . . . . . . . . . . . 2-22 2.4.1.8 Disengage OnOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-= 2.4.1.9 Micro Absorbing OPeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 2.4.2 CounterandTimer. . . :. . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 2.4.2.1 Refresh-l Timer... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 2.4.2.2 Flushing Counter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 2.4.2.3 CL Counter K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 2.4.2.4 Protect Counter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Rev.A
2-I
List
of
Figures
.
Figure 2-1. Functional Block Diagram of the Printer Mechanism. . ..........2-1 Figure 2-2. Structure of the Printhead 1 . . . . . . . . . . . . . . . . . . . . . ..........2-2 Figure 2-3. Structure of the Printhead 2. . . . . . . . . . . . . . . . . . . . . ..........2-2 Figure 2-4. Principles of the Printing Operation 1 . . . . . . . . . . . . . . . . . . . . . .. 2-3 Figure 2-5. Principles of the Printing Operation 2 . . . . . . . . . . . . . . . . . . . . . . .2-3 Figure 2-6. Carriage Drive Mechanism. . . . . . . . . . . . . . . . . . . . . . . . ........2-4 Figure 2-7. Adjust Lever. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Figure 2-8. Paper Feed Mechanism 1 . . .'. . . . . . . . . . . . . . . . . . . . . . . . .. ...2-5 Figure 2-9. Paper Feed Mechanism 2 . . . . . . . . . . . . . . . . . . . . . . ..........2-5 Figure 2-10. Diagram of the Ink System. . . . . . . . . . . . . . . . . . . . . . .........2-6 Figure 2-11. Pump Mechanism Block. . . . . . . . . . . . . . . . . . . . . . ...........2-7 Figure 2-12. Pump Operation . . . . . . . . . . . . . . . . . . . . . . . . . ..............2-8 Figure 2-13. Cap Mechanism . . . . . . . . . . . . . . . . . . . . . . . . ...............2-9 Figure 2-14. Block Diagram of the Circuits. . . . . . . . . . . . . . . . . . . . . . . .. ...2-10 Figure 2-15. Power Supply Circuit Block Diagram. . . . . . . . . . . . . . . . . . . . . . 2-11 Figure 2-16. Main Control Circuit Block Diagram. . . . . . . . . . . . . . . . . . . . . . .2-12 Figure 2-17. Reset CirWt Block Diagram . . . . . . . . . . . . . . . . . . . . . . . .....2-13 Figure 2-18. Sensor Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . .....2-13 Figure 2-19. Ink End Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-14 Figure 2-20. Carriage Motor Drive Circuit Block Diagram. . . . . . . . . . . . .....2-15 Figure 2-21. Paper Feed Motor Drive Circuit Block Diagram . . . . . . . . . .....2-16 Figure 2-22. Printhead Drive Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-17 Figure 2-23. Printhead Drive Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . . .. .2-17 Figure 2-24. Relationship of Ink System Operation to Carriage Position .. ...2-18
List of Tables
Table 2-1. Carriage Drive Motor Specification . . . . . . . . . . . . . . . . . . . . .. ....2-4 Table 2-2. Adjust Lever Position . . . . . . . . . . . . . . . . . . . . . ...............2-4 Table 2-3. Paper Feed Drive Motor Specification. . . . . . . . . . . . . . . . . . . . . . .. 2-5 Table 2-4. Pump Mechanism Operation. . . . . . . . . . . . . . . . . . . . . . .........2-8 Table 2-5. DC Voltage Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....2-10 Table 2-6. Carriage Motor Drive Modes. . . . . . . . . . . . . . . . . . . . . . . . . .....2-15 Table 2-7. Paper Feed Motor Drive Modes . . . . . . . . . . . . . . . . . . . . . . .....2-16
I I
.. c'
1
2-ii
Rev. A
Stylus 800+ Satvics Manual
OpaUng Ftincipbs
2.1 OVERVIEW
T'& section describes the operating prinaples for the Stylus 800+ printer mechanism and electrical circuits.
2.2 PRINTER MECHANISM OPERATING PRINCIPLES
The Stylus 800+ printer mechanism is composed of the printhead unit, paper feed mechanism, carriage drive mechanism, pump mechanism, and various sensors. The figure below shows a functioml block diagram of the printer mechanism.
o-l ~toJ--w `(&p'c'caner) ` `an'
1 I
Pump Mechanism
Waste Inl- uraln K `--'L +- -,
m
q
n m
E
CR
Motor
s
!% rriaae U nit
Printhead/ Filter/ Driver Circuit
m
m m
(
s . . . .
% . . .m
$+
Figure 2-1. Functional Block Diagram of the Printer Mechanism
M
Rav.A
2-1
Opwating
Princ@h!ss
Stylus Wl+ ~tillad
2.2.1 Printer Mechanism The printer mechanism fbr this printer uses a dmpawknand rnk jet system similar to all other
EPSON ink jet printem, but the printhead has been completely wdesigned to make it a)mpact and highly reliable. The figure below shows thestructureofthe printhead and rnksupplysystem. P intheed IMver Soerd Cartridge Needle \ I
Filter
Cavity Set (Nozzle)
(Multi-Layer Piezo)
Figure 2-2. Structure of the Printhead 1
MLP MLP is the abbreviation for Multi-Layer Piezoelectric element- When a drive pulse (voltage) is applied, this element pushes the vibration plate, compressing the cavity for ink ejectkm from the nozzle. Ink supplied from the ink cartridge is stored in this space and is ejected from the nozzles when the vibration plate compresses this area. These eject ink against the paper's surface in response to the application of the print signal. There are4S individual nmzlesmaking up this printhead.
Cavity
u Nozzles
Nozzle Plate
>'022'8
i
nk supply Tank Vibration Plate
` MLP (Multi-byer Piezo)
Figure 2-3. Structure of the Printhead 2
2-2
Rev. A
Stylus S00+ service Manual Principles of the Printing Operstion
Opsfating Principles
The printhead performs the following operations to eject ink from each nozzle: 1. Normal state No electrical charge is applied to the MLP (Multi-Layer Piezoelectric) element attached to the back of the cavity, and pressure in the cavity is kept at a constant level. Cavity \ Nozzle MLP
Figure 2-4. Principles of the Printing Operation 1
2. Ejection The head data signal is applied to the control line of a nozzle to select the active nozzle for printin~ and the MLP element is gradually charged with the drive voltage. Charging the MLP element bends the vibration plate to compress the cavity. Then, ink is ejected from the nozzle.
Nozzle
Figure 2-5. Principles of the Printing Operation 2
When the ink charge or printhead cleaning operation is performed, ink in the cavity is vacuumed out with the pump mechanism. During printin~ on the other hand, ink is simultaneously supplied from the ink cartridge and ejected from the nozzle, according to the change in the volume of the cavity. A thermistor is attached to the printhead drive board to monitor the temperature, because the viscosity of the ink varies, depending on the temperature. The dew temperature level is fed back to the printhead drive voltage control circuit to regulate the drive voltage to a proper level.
Rev. A
24
Opmtmg Princ@ks
Stylus m Swv4c9 Aanud
2.2.2 Carriags Drive Mechanism
The timing belt attached to the base of the carriage unit is driven by the carriage tir, causing* carriage unit to move along the carriage guide shaft from left 10 right or vice versa. The mrriage drive motor on this printer is a 4-phase, 2@ole, hybrid-type stepping motor mechanb, allowing the printer to stop the carriage or change carriage movement at any position. The position cd the carriage is reqnimd by the home positkm sensor, and poeition rnformatkm is fed back to the carriage drive control arcuit to determine the motor phase switching mode.
Table 2-1. Carriags Orive Motor SpSCifkation8
ttem Motor Type Drive Voltage Coil Reaietance Drive Frequency Excitation Mode Deaoriptlon 4-phaae / 200Do19 hybrid-tyPe etapping motor 35 v
i 5ek
10.00 t 7%/pale (at 250 C, 770 F) 960- 6oooppe 1-2 phaee excitation
.:;,., 0
Figurs 2-6. Carriags Drive Mechanism 2.2.2.1 Adjust Lever
Set the adjust lever, attached to the carriage unit, to the appropriate positicm for the thickness of the paper used for printing.
Table 2-2. Adjust Lever Position
Paper Type Levar Poeitbn Horizontal (A) Vertical (B) Platen Gap -- +0.7 mm . Envelopes
cut aheet
Envebpee Plain paper, bond paper \
/ "
. . . . . . .` . . . . . . . . . . . . . .
. .,. . u
Figure 2-7. Adjust Lever
Stylus 800+ Sawica Manual
Opwating Principles
2.2.3 Paper Feed Mechanism
This printer's paper feed mechanism can feed paper either from the built-in ASF (auto sheet feeder) or the manual feed slot. The paper feed drive motor is a 4phase, 46-pole, PM-type stepping motor that directly drives the paper feed mechanism (paper advancing operation, paper pickup operation). This motor also drives the pump mechanism, but only when the printer is in the cleaning state.
Table 2-3. Paper Feed Drive Motor Specifications
Item Motor Type Drive Voltage Coil Resistance Drive Frequency Excitation Mode Description 4-phase /48-pole PM-type stepping motor 35 v k 570 54& 3 QI pole (at 25° C, 77° F) 650-800 PPS I 2-2 phase excitation I
I
Figure 2-8. Paper Feed Mechanism 1
Figure 2-9. Paper Feed Mechanism 2
Rev. A 24
Opemting Princlpks 2.2.4 Ink System W printer's ink system is composed of the lbllowing mechanisms:
u Ink cartridge
" P u m p mechams m 0 Cap mechanism u Printhead cleaning mechanism u Waste inkdraintank The figure below shows a diagram of the rnk system. = Ink Cartridge Head Driver Board Filter
Sl)w8 m S&wm Rbud
\ Cleaner
I
/
/
Printhead
Pump
,. @
1
I
I
I!
./
/
1
i
Figure 2-10. Diagram of the Ink System
2-6
Rev. A
Stylus 800+ Sarvica Manual
Opwating Prlnc@las
2.2.5 Pump Mechanism
The paper lked motor drives the pump mechanism when the transmission gear is moved to the position where the paper feed motor engages the pump mechanism gear trains, when the carriage unit is at the ink system home position. The figure below shows a block of the pump mechanism. Pump system operation depends on the rotational direction of the paper feed drive motor, as shown in table below. A
--rl - - - - - -l I -----4
L-- J
L.. 2
n-f
0
Figure 2-11. Pump Mechanism Block
Rev. A
2-7
Opmthg FY'hw@9s
r
Siyhm
m ~ Manual
1
Table 24. Pump Mechanism Operation 1
PF Motor Rotational Diraotion Oparatiort Pumping Pseudo-pumping (falee abeorbing) Gear backruah mmpenaation Micro absorbing
clockwise (Cw)
(forward rotation) Countedockwiee (CCW) (baclward rotation)
Pump pulley reeet Gear backrueh compenaatiort . The pump draws rnk from the printhead nozzles and drains it to the waste ink drain tank. This operation is performed by the printer to eliminate dust/bubbles within the nozzles. The figure below illustrates pump operation. When the paper tked drive motor rotates CW (forward), the pulley pump in the wheel pump unit rotates in the direction of the arrow, while squeezing the ink tube to push the ink out of the tube and into the waste ink drain tank. On the other hand, when the motor rotates CCW, the pulley pump moves inward along the grooves of the wheel pump, releasing the pressure applied to the ink tube.
Vaammin~
No Vauwrling
Pumping (CCW)
Ftubbsf
No Pumping (CW)
bkdo
Pump whoci
Rotation: CCW
(Rubber blado pushes tho pUlllp pulley to outcrsido of tho PUMP W!IOOI, and tha pump pullay caotacts the Ink tub..)
Rotation: CW
(Rubber blado rsaotstho pump pullay by pushing II to tho Inn-r MD.)
Figure 2-12. Pump Operation
2-8
Rev. A
Stylus 800+ Service Manual
Operating Principiss
2.2.6 Cap Mechanism
The cap mechanism prevents the printhead nozzles from drying or bubbles from forming inside the nozzle while the printer is not in use. The printhead capping operation is performed automatically so that a cap closely contacts the printhead surface when the carriage unit is moved to the ink system home position.
1
Carriage (Printhead)
\
1+ `-\
,..
`/
Cap Unit
.. e&
s
\
Slider Valve
Figure 2-13. Cap Mechanism
Rev. A
2-s
Opening Prfnc@hw
Slylus SW+ ~ -In@
2.3 OPERATING PRINCIPLES OF THE CIRCUITS
The Stylus 8(M+ contains the following circuit board units: C134 MAIN board (maincontrol circuit board) C106PSB-B/PSE-Bboad (powersupplycircuitboard) In addition to the arcuit boards above, part of the printhead drive circuit is built on a separate circuit tnrd installed in the carriage unit, and the printhead is attached directly to this board. The figure below shows a block diagr& of the arcuits.M-481 1 Printer Mechanism , Carriage /
AC Input
....................................................... \/ .............................. .
Head Driver Board Cl 06 PSB-B/ PSE-B +35 VDC
+5 VDC L
Head Drive ~ Voltage
I
..............................
,.. . . . . . . . -. - . . -- . . . . . . .- . . . . ---- . --- . . . . . . . . . . . .- .- -. . . . . . . . .,
d
CR Motor ~ PF Motor ~
I
(+35 VDC)
C134
MAIN
I
C106 PNL
Control Panel Figure 2-14. Biock Diagram of the Circuits
2.3.1 Operating Principles of the Power Supply Circuit
The power supply arcuitry fbr this printer is provided either by the C106 PSB-B BOARD (120 VAC) or the C106 PSE-B BOARD (220-240 VAC). Both boards am identical in design and functionality, except for components in the primary arcuit that accomm odate the specified input voltage. The application of output voltages is summarized in the table below.
Tabie 2-5. DC Voitage Distribution Vottago
+35VDc Applkation
Motor drive (caniage and paper feed)
Printhead (through the drive vottage generation circuit)
I
+5 VDC
I C134 MAIN bad
Sensors (home poeition and paper end) control panel
(PF motor holding vottage)
2-1o
Rw. A
Stylus 800+ Sarvica Manual
Oparating Princ@9s
The figure below shows a block diagram of the power supply circuit (CIM PSB-B/PSE-B). This power supply circuit employs the RCC (ringing choke converter) switching control system. The input AC voltage supplied from the external AC source is first input to the filter circuit for higher harmonics absorption. TRe AC voltage is fhen input to the rectification and smoothing circuit, converting it into DC voltage. This DC voltage is input to the switching circuit for switching operation. Along with the switching operation on the primary side, +35 VDC is generated after passing through the smoothing circuit. The +35 VDC level is fed back to the primary switching circuit through the +35 V line voltage detection circuit and, thus, the +35 VDC output level is stabilized. This +35 VDC is also input to the +5 VDC regulation arcuit to regulate a stable +5 VDC.
Primary Side
Secondary Side
m ~+5 VDC
--~
Smoothing Circuit
cl 1
Q1
T1 ,.--.
,, --.--
1
~+35 VDC
I
F?
DB1 Full-wave Rectifier Circuit
b
I
+35
ZD52
v
*
ZD8 1/82183/84185151 +35 v Voltage Drop Sensing Circuit ~ ZD53 +5 v
$
Filter Circuit
Pcl !
L
1
AC
Input
Figure 2-15. Power Supply Circuit Block Diagram
This circuit contains the protection circuits described below. 1. +5 VDC line overvoltage protection circuit The output voltage level of the +5 V line is monitored with a Zener diode (ZD53), and if the voltage level exceeds the predefine level (+7 V),, this status is fed back to the primary switching circuit through a photocoupler (PCl) to stop the +35 V generation. +5 VDC line over current protection circuit The output current is monitored with detection resistors (R53 and R81) and fed back to the +5 VDC generation switching control IC (IC51). If the current level exceeds the limit, the control IC shortens the ON time of the switching transistor (Q51) to decrease the output voltage level (constant current operation). +35 VDC line voltage drop sense circuit The output level is monitored with Zener diodes (ZD81, 82,83,84,85, and 51). If the voltage level drops below the limit level (+32 V), it activates photocoupler PCl, and this stops the primary switching circuit operation. +35 VDC line constant vokage output control circuit The output level of the +35 VDC lhe is monitored by a detection circuit that consists of a Zener diode (ZD52). This circuit feeds back the output voltage level status througha photocouplerto the primary switching circuit to control the ON/OPF time of the switching transistor for constant output voltage control.
2.
3.
4.
R a v .
A
2-11
WW Pril?+hm
2.3.2 Operating Prlnciplea of tha Main Control Circuit
SiyIl#8 U@+ su'ldco Manual
The C134 MAIN board is the main cxmtrol circuit of this printer. `his circuit is controlled by the l&bit TMP96C141F CPU (ICI), running at 19.6fXXl MHz This CPU has a unique architecture, making it capable of handling data a an 6-bit bus width data bus or a 16-bit bus width data bus. Themtbre, a l~bit data bus width ROM is used cm this board, increasing the internal process" speed. Gate array E05BW (IC3) manages printhead drive control, extemaI I/F control (fir% Centronics parallel interhce), and the control panel. The CPU directly mntrola both the carriage drive motor and the paper feed motor. This board also is equipped witha 93C46 EEPROM (IC1O) to store parameters, such as the pMter mechanism control parameter, default setting parameters, as well as the special counter value used for printhead protection.
+35 VDC
ri `05'00
I
I
IC3
l--l
] (Program)
mmm m
I I (CG/4, 8, 16M) ] l(CG/4, 8, 16M)j
(lM)
ADO-15
CRO-3 ~ I
--l
IC14 Mask ROM (CG/ 4,8, 16M)
P61x
IC15 Mask ROM
l(CG/4, 8, 16M) I
Control Panel
IC13 QM1 SMA6501 SLA7024 ;ti PF Motor CR Motor
Figure 2-16. Main Control Circuit Block Diagram
2-12
Rev. A
Stylus Wlh Servke Manual 2.3.2.1 Reeet Circuita
Optwating Principks
The C135 MAIN board contains two 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, using reset IC PST592 (IC12), and outputs a reset signal to both the CPU (ICI, TMP96C141) and the E05BO0 gate array (IC3), when the voltage level drops below +4.2 V. The +35 V monitor reset circuit, on the other hand, monitors the voltage level of the +35 V line, using reset IC 51955BFP (IC1l), and outputs a reset signal to the CPU. The reset signal is generated when the voltage level drops, and this causes a non-maskable interrupt (NMI).
&&
23
RESET
21
~ RESET
E05A85EB
(IC3)
1
Figure 2-17. Reset Circuit Block Diagram 2.3.2.2 Sensor Circuits
The following sensor circuits emble the main board to monitor printer mechanism status: 1. HP sensor A photocoupler-type HP (home position) sensor is attached to the back of the carnage unit to detect the carriage home position as a print reference position. A HIGH level from the signal indicates that the carriage is in home position. A mechanical switch PE (paper end) sensor is built into the printer mechanism to determine whether there is paper in the printer or not. Two electrical contacts are attached to the ink cartridge holder in the carriage unit, and when the ink cartridge is installed, the metal pins built into the ink cartridge touch these contacts. "he IE (ink end) sensor circuit applies a HIGH level signal when performing the ink end status detection operation. The ink level is determined by the resistance between the two contacts by measuring the input signal level with analog port ANO (pin 73) of CPU. A thermistor is attached to theprinthead unit to monitor its temperature. The CPU changes the printhead drive signal's pulse width (charge pulse width) based on the temperature level.
PE (CN4) 79 SW8 E05BO0 (IC3) 80 Sw INK 46 48 777IC9 +5 v +5 v 10 I ~3 r 7!3) +5 v +5 v
3
27
NMI
CPU (ICI)
2. PE sensor 3. IE sensor
4. Thermistor
I
1
+5 v
CPU (ICI)
AN1 ' 7
4
Figure 2-18. Sensor Circuit Block Diagram
Rev. A 2-13
Opmthg Pdnc@k8
S&h m Su'vko hmnml
2.3.2.3 Ink End Detection
The IE (Ink End) sensor attached to the -ge detects, not ody the ink end, but&m when ink is
low and whether an rnk cartridge (I/C) is installed. The detected status is divided into seven modes based on the output voltage level of the IE sensor. Cl Abnormal condition mode: Errormnditkm (not printable) Normal amditim (prin-table) Cl Normal conditon mode: Ink is low @intable) Inklow m o d e : Ink is low (during printing) (printable) 0 Mode A: Inkend (during pumping) (not printable) u Mode B: Jnkend Cl Inkend mode: (not printable) No I/C (not rnstalled) Cl No inkcartridge mode: (not printable)
High Mode
Ink End \
I / if.; . o
Resistance Value
No Ink Cartridge
Normal Condition
Low Full
d
/
Abnormal Condition Empty Ink Remaining --+
Figure 2-19. Ink End Detect}on
When the ink end detection operation has determined ink status, the pMter indicates the status on the control panel, as described below: 1. During pMting 2. During pump operation: If an ink end is detected, the printhead is cxipped and the control panel indicates an INK END error. If Mode B is detected, the printer indicates an INK END error after the detection operation sequence completes and interrupk pump operatkm. If Ink ad mode, Abnormal mode, or No ink cartridge mode is detected, the printer indicates an INK END error after interrupting pump operation. If Ink end mode, Abnormal mode, or No ink cartridge tie is detected, the ptiter indicates an INK END error on the control m.
c'
3. In standby State:
2-14
Rev. A
Stylus 800+ service Manual 2.3.2.4 Carriage Motor Drive Circuit
Oparating Principbs
The SLA7024 carriage motor drive IC (IC13) drives the carriage motor for the printer mechanism using a constant current, unipolar drive system. Gate array E05BO0 (IC3) selects the motor phase drive current level using the output signals from ports CRO to CR3 (pins 75 to 78). The phase switching operation is directly controlled by the phase control signals output from ports P600 to P603 (p= l-to 4) of the CPU. The table below shows the carriage rnotordrive modes-
Table 2-6. Carriage Motor Drive Modes
CR Speed (CPS) 250 165 63 40 HOLD Drive Frequency (PPS) 6000 3960 2000 960 -- Phase Excitation 1-2 phaee 1-2 phaae 1-2 phaae 1-2 phaae 2-2 phase Acceleration Current (A/Phase) 0.60 0.60 0.60 0.60 NormeUDeoeleretion current (NPhase) 0.4W0.45 0.30/0.60 0. SWO.60 0. WO.60 Approximately 0.15 SLA7024 (IC13) CPU (ICI) P600 ~ P601 - 2 P603 3 P602 4 +5V 6 INA ` 7 INB 5 IN-A `6 IN-B +35V
CR Motor (CN6)
;
* a ~
rs
I
E05B00 (IC3)
CR()
CR1 CR2 75 CR3
78 77 76
d
R59 R223
A 8 " 1 -A
B
RFA RFB -B
18 11
R224
CRCOM CRA CR-A CRB CR-B
I
R33 R34 R35
R36
Figure 2-20. Carriage Motor Drive Circuit Biock Diagram
Rev. A
2-15
Op9mting Princ@8s
S@8 * SUvics ~
2.3.2.5 Paper Feed Motor Driw! Circuit
"nw The paper fked motor lbr this printer drives the tdkmving nwchams
u Paper feed mechanism
Paperpickupmechanism Pump mechanism The SMA6501 driver IC (QM1) drives the paper feed motor using a constant voltage, unipolar drive system. The CPU outputs phase control signals from ports P61O to P613 (pins 5 to 8) for the phase switching operation. `Ihe CPU also outputs the supply voltage switching amtrol signal fmm port TCJ3 (orn 12) to switch the supply voltage to +5 VDC wkm the paper feed motor control is m HOLb mode. The drive mod~~shom-rn the tabiebelow.
Tabie 2-7. Paper Feed Motor Drive Modes M*
Continuous feed pump drive Phase Excitation 2-2 phaae 2-2 ptlaae SMA6501 Drive Fmquency(PPS) 800 650 PF Motor
(QM1) CPU (lCl) P61O P611 P612 P613
T03
12
J
El
5 6 7
8
` B1 B2 B3 B4 10 BP
3 6
8
cl C2 ; C3 9 C4
B
2
1
(CN5) ) ` PFA 5 PF-A 2 PFB 8 PF-B
1
1
D1 T
Q1.. . . .
. . . . . . . .. +'
+'
777
Figure 2-21. Paper Feed Motor Drive Circuit Block Diagram
2-16
Rev. A
Stylus 4MI+ Ssrvks hknusl
OpmWng Princ@lss
2.3.2.6 Printhead Drive Circuit
The printhead drive circuit for this printer is composed of the following two parts: · Commondrivecircuit(trapezoidal drivepulsegeneration) l u Head drive circuit (nozzle control built on theprinthead) The SED5620D 64-bit thermal head driver in the head drive circuit on the printhead is used as a nozzle selector to drive the printhead nozzles selectively. Print data is converted into serial data by gate array E05BO0 (IC3) and is output from port S1 (pin 63) to the head drive circuit on the printhead as data for each nozzle. Then, the SED5620D head driver latches the head data when gate array E05BO0 outputs the LAT signal, and the latched data becomes 48-bit parallel data, with one bit corresponding to each nozzle of the printhead. When data transfer and nozzle selection is complete, gate array E05BW outputs the common drive pulse PWC (charge pulse) and PWD (discharge pulse) to the common drive arcuit. The common drive circuit then generates the trapezoidal pulse and applies it to the printhead as a common drive pulse. After this, the nozzle selected by the head data is activated to inject ink by energizing the MLP element drive with the applied trapezoidal drive pulse. ::
.:- - - - ; - - - - -: - - - - - - ::
Pwc PWD
: j
1
Figure 2-22. Printhead Drive Pulae
HEAD-1
(IC3) HCLK 65 LAT M ~, 63 +5 v + CPU (lCl) 74 HCLK :" IAT SI ` 2 TH HEAD-2 (CN3)
2
AN1
Figure 2-23. Printhead Drive Circuit Diagram
Rev. A
2-17
Openlting Princ@b98
!9tyhmUlUt+SU@csAklnml
2.4 INK SYSTEM MANAGEMENT
l'his section explains how the ink system is controlled to protect the printhead and ink supply system and ensure highquality output. Ink system control is composed of h following operations: Power on a caning Standby u Initial charge Refresh Cleaner blade I/C (ink cartridge) replacemmt Disengage ON Mimo absorbing l%ese ink system operations are controlled by the values indicated m the following counters and timers: Refresh timer Flushingcounter Protect counter The figure below shows how the carriage position determines which ink system operation is to be executed. Ink System Home Position (HP) I
........................................................................................
L------,
: Printer Mechanism
: (M-4811)
j Capmnp i ; Mechanism ij/
;........ ~....~ ::
I
:,
I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
ASF Sheet Loading Position
flushing ~ Position ` ; False Absorbing !
Position * "
..j c., Cleaner Stari
i
Cleaner End Position
--""->&
Cleaner Reset Posilion
!
I
Ink cartridge R~ Position
Figure 2-24. Relationship of Ink System Operation to carriage Position
2-18 Rev. A
Stylus 890+ Sawice Manual
Operating Principles
2.4.1 Ink Operations
Various ink operations can be performed selectively by the printer.
2.4.1.1 Power on Operstion
Power on consists of the following operations (only one of which is performed, depending on the position of the carriage and condition of ink cartridge when the printer is turned on): At ink systemhome position Ink level is normal 1. Moves the carriage to the flushing position and performs the flushing operation. 2. Returns the carriage to thehomeposition (standby for printing). Note: The false absorbing opemtion is performed precedes the above-mentioned sequence, depending on the protect counter R value. Performs cleaner blade - I operation. (Refer to Section 2.4.1.6) 2. Performs ink absorbing operation. 3. Performs pressure release operation. 4. Performs micro absorbing operation. 5. Performs false absorbing operation. 6. Performs cleaner blade - II operation (including the flushing operation). 7. Moves the carriage to the standby position. 1. Performs cleaner blade - I operation. 2. Performs ink absorbing operation. 3. Performs pressure release operation. 4. Performs micro absorbing operation. 5. Performs false absorbing operation. 6. Performs cleaner blade - II operation (including the flushing operation). 7. Moves the carriage to the standby position. 1) Displays INK END. 2) Enter the pause mode. 1.
u Notatink system home position
At ink system home position Ink is low
No inkcartridge Note:
/n the flushing operation, the pnntheadmoves to the position where the cap covers the nozz/es and then ink is injected from all the nozzles foward the cap.
Rev. A
2-19
Opomffng Pdnc@ks
Slyks m SUvke#b#n#d
2.4.1.2 Cleaning Operation
`l'his operation is perhned when clcaning is selected by pressing the Ah and Pauaa buttons simuhaneously. There are three cleaning modes, each of which is performed sektively, depending on the value of cleaning counter K and the number of pMted lines from the previous cleming operation. OCL1 (-Normal) 1. 2. 3. 4. 5. 6. 7. 8. 9. M the carriage is out of home poaition, it returns to the home poaition. Printer starts deaner blade- I operation. Printer changes the gear engagement (pump drive ON). Ink absorbing operation begins. Printer pertbrms pressure .release operation. Printer perfbrms micro absorbing operation. Printer performs the false absorbing operation. Cleaner blade - II operation begins (including the flushing operatkm). Printer moves the carriage to the standby position and changes the printer state to pause. If the carriage is out of honw position, it returns to the home poaition. Printer starts cleaner blade - I operation. Printer changes the gear engagement (pump drive ON). Ink absorbing operation begins. Printer performs the pressure release operation. Printer perhns the false absorbing operaticm. Rubbing operation begins. Printer changes the gear engagement (pump drive ON). The micro absorbing operation begins. Printer perkxms the false abwrbing operation. Cleaner blade - II operation (including the flushing operation) starts. Printer moves the carriage to the standby position.
@
u ICL2 (Intensive) 1.
2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
u CL3 (False)
This indudes the same operations as CL1, except that the carriage is moved to the false absorbing position and the false absorbing operation is performed in step 4.
2.4.1.3 Standby Operation The standby operation prevents an increase in the viscosity of the ink held inside the printhead
nozzles. `I% operation is performed automatically if no data is received tbr more than three semnds from the last print data. 1. Printer counts the number of flushing operations from the last standby operation, using the combined print counter N. Then it performs flushing based on the counter value. 2. Printer moves the carriage to the home position.
.: c)
.". ,..~.,,
!
2-20
Rev. A
Stylus W(I+ service Manual 2.4.1.4 Initial Charge operation
Opafating Ptincipbs
This operation is performed when initial charge mode is selected to charge the printhead with ink. The operation has two modes, depending on the value held by protect counters B and C.
u Initial Charge
1. If the ink cartridge is not mounted onthecarriage,load the ink cartridge. 2. Printer performs cleaner blade - I operation. 3. Printer Changes thegearengagement (pump drive on). 4. Printer performs inkabsorbingoperation (absorption =high). 5. Printer performs pressure release operation. 6. Printer performs inkabsorbingoperation (absorption = middle). 7. Printer performs pressure release operation. 8. Performs rubbing operation. 9. Performs micro absorbing operation. 10. Performs false absorbing operation. 11. Performs cleaner blade -II operation (including the flushing operation). 12. Moves the carriage to the standby position. This operation is identical with the initial charge operation, except that the operations for steps 4 and 6 are changed as follows: . Printer moves the carriage to the false absorbing position and performs the false absorbing operation. Then, moves the carriage to home position after step 8.
u False Charge
2.4.1.5 Refreah Operation This operation prevents an increase in the viscosity of the ink inside the printhead and eliminates any ink attached to the nozzle plate surface. Refresh consists of the following operations:
u Refresh - I operation
El Print start
Activated by ttk REFRESH-I signal, output every 20 seconds during continuous printing. 1. Printer returns the carriage to home position. 2. Carriage moves to the flushing position. 3. Printer performs flushing operation. 4. Printer performs false absorbing operation, if the ink level counter R value exceeds 3000. 5. Printer returns to the previous state. Ejects high-viscosity ink inside the nozzles when the printing starts from the standby state. 1. Carriage moves to the flushing position and printer performs flushing. 2. Printer starts printing operation. Absorbs ink inside the cap and eliminates ink attached to the nozzle plate surface. 1. Moves the carriage to the false absorbing position. 2. Performs false absorbing operation. 3. Resets the pump pulley. 4. Release a mechanical pressure of the pump drive mechanism. 5. Adjusts the phase with paper feeding mechanism gears. 6. Returns the carriage to the home position.
u False absorbing
Rev. A
2-21
operating PrhIc@9&Z 2.4.1.6 Cleaner Blade Operation
stytus 8@+ SUvka MmnW
The cleaner blade operation eliminates any dust or ink attached to the nozzle plate surf%ce. This operation consists of the following separate operational modes.
u ICleanerblade- I Elimina tes any dust attached to the nozzle plate surface before the ink
absorbing operation is perfdrrnd 1. Printer positions thedeanerblade. 2. Printer moves the carriage tothedeanerstart position. 3. Printer moves the carriage to the deanerend poaition (head surface is wiped off with the cleaner blade). 4. Printer resets thedeanerblade. 5. Printer returns the carriage to the home position. fJCleanerblade -11 Elimina tes any dust or ink cm the nozzle plate surface after the ink absorbing operation is performed. 1. Printer positions thedeanerblade. 2. Printer moves the carriage to the cleaner start position. 3