Precautionary notations throughout the text are categorized relative to 1) Personal injury and 2) Damage to equipment.
DANGERSignals 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.
WARNINGSignals 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.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR
REPAIR PROCEDURES.
2. 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.
3. 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.
4. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURY FROM METAL PARTS WITH
SHARP EDGES.
WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.
2. MAKE CERTAIN THAT THE SOURCE VOLTAGES 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.
3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR
REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC
WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.
5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECONDSOURCE ICs OR OTHER NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.
6. WHEN AIR DUSTER IS USED ON THE REPAIR AND THE MAINTENANCE WORK, THE USE OF THE AIR DUSTER PRODUCTS CONTAINING
THE INFLAMMABLE GAS IS PROHIBITED.
About This Manual
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and procedures included
herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.
Manual Configuration
This manual consists of six chapters and Appendix.
CHAPTER 1.PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product.
CHAPTER 2.OPERATING PRINCIPLES
Describes the theory of electrical and mechanical operations of the
product.
CHAPTER 3.TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting.
CHAPTER 4.DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling
the product.
CHAPTER 5.ADJUSTMENT
Provides Epson-approved methods for adjustment.
CHAPTER 6.MAINTENANCE
Provides preventive maintenance procedures and the lists of Epsonapproved lubricants and adhesives required for servicing the product.
CHAPTER 7.APPENDIX
Provides the following additional information for reference:
• Connectors
• Routing
• ASP List
• Exploded Diagrams
• Circuit Diagrams
Symbols Used in this Manual
Various symbols are used throughout this manual either to provide additional
information on a specific topic or to warn of possible danger present during a
procedure or an action. Be aware of all symbols when they are used, and always read
NOTE, CAUTION, or WARNING messages.
Indicates an operating or maintenance procedure, practice or condition
that is necessary to keep the product’s quality.
Indicates an operating or maintenance procedure, practice, or condition
that, if not strictly observed, could result in damage to, or destruction of,
equipment.
May indicate an operating or maintenance procedure, practice or
condition that is necessary to accomplish a task efficiently. It may also
provide additional information that is related to a specific subject, or
comment on the results achieved through a previous action.
Indicates an operating or maintenance procedure, practice or condition
that, if not strictly observed, could result in injury or loss of life.
Indicates that a particular task must be carried out according to a certain
standard after disassembly and before re-assembly, otherwise the quality
of the components in question may be adversely affected.
between Photo and Matte black depending on the driver selection while utilizing the same
physical ink channel.
Black, Cyan, Magenta, Yellow, Light Cyan, Light Magenta
(Refer to Table 1-1 for the alignment sequence of the
cartridges)
Borderless printing
Silent paper feeding
Automatic bottom processing
L/4 x 6 Photo high-speed printing
Auto nozzle check
Auto Bi-d adjustment
Refer to Table 1-3
Table 1-1. Cartridge Alignment Sequence
Row 1Row 2Row 3Row 4Row 5Row 6Row 7Row 8Row 9
Matte
Black
(MK)
Switched by an Ink
Photo
Black
(PK)
Selector
Light
Black
(LK)
Light
Light
Black
(LLK)
Cyan
(C)
Magenta
(M)
Light
Cyan
(Lc)
Light
Magenta
(Lm)
Yellow
(Y)
Table 1-2. Dot Size
Dot SizeL (pl)M (pl)S (pl)
VSD122.213.86.6
VSD213.25.93.5
VSD3----3.5
Economy22.2----
Table 1-3. Printing Speed and Area (Alphanumeric Characters)
ItemSpecifications
Character quality
Character pitch
Printing area
Printing speed
Fine
10 CPI
167 digits
280 cps
Table 1-4. Printing Speed and Area (Graphic Mode)
Horizontal Resolution
(dpi)
360 441.8 mm (17.39 inch)6,262280 cps
720 441.8 mm (17.39 inch)12,524280 cps
1440 441.8 mm (17.39 inch)25,047280 cps
2880 441.8 mm (17.39 inch)50,094280 cps
Note *:Includes margins that bleed off the edges of paper. (max. 5 mm for both home and the opposite
sides.)
Maximum Printing Area*Printable Dots Printing Speed
PRODUCT DESCRIPTIONBasic Specifications11
EPSON Stylus Pro 3800/3800C/3850Revision A
1.2.2 Electric Specifications
Item
100/120V Model220/240V Model
Rated voltage100 to 120 VAC220 to 240 VAC
Input voltage range90 to 132 VAC198 to 264 VAC
Rated frequency50 to 60Hz
Input frequency range49.5 to 60.5Hz
Rated current0.6 A0.3 A
OperatingApprox. 25 WApprox. 25 W
Power
consumption
Low-power mode
*
Approx. 5 WApprox. 5.5 W
S/W turned OFFApprox. 0.3 WApprox. 0.4 W
Insulation resistance
Dielectric strength
10 M: or more
(between AC line and chassis at 500 VDC)
1.0 kVrms AC for 1 min. or 1.2 kVrms AC for 1 sec.
(between AC line and chassis)
Leak current0.25 mA or less
Conforms to International Energy Star Program
Compliance with regulations
Note *:Shifting to low-power mode takes 15 min.
(Category: conforms to the harmonic restraint measure
guideline)
Conforms to VCCI Class B
Specification
1.2.3 Environmental Characteristics
TEMPERATURE/HUMIDITY
ConditionTemperature
*2
Operating10 to 35 °C20 to 80 %
before unpacking-20 to 60 °C*
Storage*
Note "*1": Includes condition during transportation.
1
after unpacking-20 to 40 °C*
"*2": The combined temperature and humidity conditions must be within the blue-shaded range
shown in Figure 1-2.
"*3": Within 1 month under 40°C, within 120 hours under 60°C.
Humidity (%)
80
3
3
32
60
55
20
Humidity*2
(non condensation)
5 to 85 %
5 to 85 %
Normal
ambient
environment
The printer
allowable range
10 15
25
27
3540
Temperature (°C)
Figure 1-2. Temperature/Humidity Range
PRODUCT DESCRIPTIONBasic Specifications12
EPSON Stylus Pro 3800/3800C/3850Revision A
RESISTANCE TO VIBRATION/SHOCK
VibrationShock
Operating0.15G, 10 to 55Hz1G, within 1ms
Storage0.50G, 10 to 55Hz2G, within 2ms
C A U T I O N
When transporting the printer, the print head must be capped,
and the ink cartridges must be removed.
If the print head is not capped with the power turned off, turn
the printer on with the ink cartridges installed, then turn it off
after confirming the print head is capped.
1.2.4 Reliability/Durability
ItemTarget
Until any one of the following conditions is met.
Operating life of the printer
MPBF
MTBF
Battery life5 to 10 years
Extension of normal TCL
generation time
Simultaneous use of CL timer T1
and FL timer Tf
Periodical flushingEvery 1 hour
Note "*1": A4-sized paper, ECMA Pattern printing
"*2": Approx. 5% coverage
"*3": Total print time of 850 hours in normal ambient temperature, approx. 10% coverage.
(POH = Power on hours)
• 12,000 pages (A2 plain paper fine mode)
• 1,600,000 paths (carriage movement)
•5 years
Black: 300 pages or more
Color: 150 pages or more
20,000 POH
(No faults with electronic parts and fans)
4,320 hours (6 months) printing time within 2 hours
360 hours (15 days) printing time over 2 hours
Execution
*3
*1
*2
PRODUCT DESCRIPTIONBasic Specifications13
EPSON Stylus Pro 3800/3800C/3850Revision A
1.3 Printing Specifications
1.3.1 Paper Feed Specifications
ItemSpecification
Paper feed methodFriction feed
Minimum pitch of paper feed2.94 Pm (1/8640 inch)
Paper feed speed25.4 mm (1 inch) when line feed: 333 msec (3 inch/sec)
1.3.2 Paper Feeder Specifications
EPSON Stylus Pro 3800/3800C/3850 support three types of paper feeding methods;
ASF, Rear Manual Feed, and Front Manual Feed. The paper size and thickness for each
of the methods are shown in the table below. For paper type and feeder capacity, refer
to "1.3.3 Paper Support" (p15).
Paper Feed
Method
ASF89 to 431.8127 to 950L/4”x6” to A2/USC0.08 to 0.27
Rear Manual Feed210 to 431.8279.4 to 950A4/LTR to A2/USC0.29 to 0.5
Front Manual Feed210 to 420279.4 to 594A4/LTR to A21.2 to 1.5
Width (mm)Length (mm)
Paper Size
Standard paper
(mm)
Thickness
(mm)
PRODUCT DESCRIPTIONPrinting Specifications14
EPSON Stylus Pro 3800/3800C/3850Revision A
1.3.3 Paper Support
Media NameSize (mm)
L (3R)(89 x 127)ASF (20)P
5” x 7”(127 x 178)ASF (20)P
16:9 wide (102 x 148)ASF (20)P
8” x 10”(203 x 254)ASF (20)P
4” x 6”(102 x 152)ASF (20)P
Premium Glossy Photo
Paper
Premium Semigloss
Photo Paper
Premium Luster Photo
Paper
Singleweight Matte
Paper
Photo Quality Ink Jet
Paper
(KANZAN for EU A4
only, ESF for others)
Proofing Paper
Semimatte
(Commercial
Semimatte)
11” x 14” (279 x 356)ASF (10)P
Letter(216 x 279)ASF (20)P
A4(210 x 297)ASF (20)P
A3(297 x 420)ASF (10)P
S-B/A3+ (329 x 483)ASF (10)P
A2(420 x 594)ASF (1)P
USC(432 x 559)ASF (1)P
4” x 6”(102 x 152)ASF (20)P
Letter(216 x 279)ASF (20)P
A4(210 x 297)ASF (20)P
A3(297 x 420)ASF (10)P
S-B/A3+ (329 x 483)ASF (10)P
A2(420 x 594)ASF (1)P
Letter(216 x 279)ASF (20)P
A3(297 x 420)ASF (10)P
S-B/A3+ (329 x 483)ASF (10)P
USC(432 x 559)ASF (1)P
S-B/A3+ (329 x 483)ASF (50)NAM
A4(210 x 297) ASF (100)NAP/M
Letter(216 x 279) ASF (100)NAP/M
Legal(216 x 358)ASF (50)NAP/M
USB(279 x 432)ASF (50)NAP/M
S-B/A3+ (329x483)ASF (1)NAP
Feeder
(capacity*1)
Borderless
2
print*
Black
Ink*
3
EAI EU Asia
Media NameSize (mm)
Letter(216x279)ASF (20)M
Enhanced Matte Paper
(EAI)/Archival Matte
Paper
(EU, Asia)
Watercolor PaperRadiant White
UltraSmooth Fine Art
Paper
Velvet Fine Art Paper
Note "*1": ASF = Auto Sheet Feeder
R.Manual = Rear Manual Feed
Front Manual Feed supports thicker paper (1.2 to 1.5mm thickness).
Paper loading capacity for both Rear and Front Manual Feed is one sheet.
"*2": User-defined sized paper (89 x 127mm to 432 x 950mm) is not available for borderless
printing.
"*3": Shows the supported black ink type
P:Photo Black
M:Matte Black
P/M: Both Photo and Matte Black are supported
Note *:TM and BM are fixed to 20 mm in front manual feeding.
The printer detects the paper width when paper is set. (If the paper width detection
setting is OFF, the printer does not detect the paper width.)
The printer does not print the image exceeding the detected paper width and the
printable area that is specified in the paper setting. (If the paper width detection
setting is OFF, the printer may print on the platen.)
The top/bottom/left/right margins (TM, BM, LM, RM) can be set to zero under
special conditions.
Because the printer detects tilt of loaded paper in a range of 3 mm at both left and
right sides, an image bleeds off both left and right edges of paper by 3 mm each at
borderless printing. However, if the distance between the paper edges and the
platen (sponge width) is less than 3 mm, the bleeding margins are adjusted to less
than 3 mm (within the range of 0 mm
(Refer to "1.4.2 Borderless Printing" (p17), for the borderless print specification.)
a
3 mm) not to directly print on the platen.
PW
LMRM
TM
Printable Area
Paper Feed Direction
BM
Figure 1-3. Printable Area
PL
PRODUCT DESCRIPTIONPrinting Specifications16
EPSON Stylus Pro 3800/3800C/3850Revision A
1.4 Print Mode
This section provides specifications of the print mode and borderless printing.
1.4.1 Print Mode
Media TypePrint Quality
Plain Paper
Inkjet Paper
--ISV Square Resolution Mode
Note "*1": Driver not supported
"*2": Driver not supported (supports Out_bit_1 only)
Draft360 x 360 dpiVSD1_Eco (280cps)
Normal (360 dpi)720 x 360 dpiVSD1 (280cps)
Normal (360 dpi)720 x 360 dpiVSD1 (280cps)
Fine (720 dpi)720 x 720 dpiVSD1 (280cps)
Super Fine (1440 dpi)1440 x 720 dpiVSD2 (280cps)
Super Photo (2880 dpi)2880 x 1440 dpiVSD3 (280cps)
1.4.2 Borderless Printing
AVAILABLE PAPER SIZE
The following table lists paper sizes in the order shown by the printer driver, and shows
the borderless printing availability.
Print Density
(H x V)
1440 x 1440 dpiVSD2 (280cps)
2880 x 2880 dpiVSD3 (280cps)
Dot Size
*1
*2
Table 1-5. Borderless Printing Available Paper Sizes
Paper Size Displayed by DriverBorderless Print
A4 (210 x 297 mm)Available
A3 (297 x 420 mm)Available
Super A3 (329 x 483 mm)Available
A2 (420 x 594 mm)Available
B5 (182 x 257 mm)NA
B4 (257 x 364 mm)NA
B3 (364 x 514 mm)NA
89 x 127 mm (3.5 x 5 in)Available
102 x 152 mm (4 x 6 in)Available
127 x 178 mm (5 x 7 in)Available
16:9 wide (102 x 181 mm)Available
203 x 254 mm (8 x 10 in)Available
254 x 305 mm (10 x 12 in)Available
279 x 356 mm (11 x 14 in)Available
305 x 305 mm (12 x 12 in)NA
406 x 508 mm (16 x 20 in)Available
User Defined*NA
Note *:The minimum user defined size is 3.5 x 5 in (89 x 127 mm), and the maximum size is 17 x 37.4
in (432 x 950 mm).
Table 1-5. Borderless Printing Available Paper Sizes
Paper Size Displayed by DriverBorderless Print
Letter (8 2/1 x 11 in)Available
Legal (8 2/1 x 14 in)NA
Half Letter (5 2/1 x 8 2/1 in)NA
US B (11 x 17 in)Available
US C (17 x 22 in)Available
A6 (105 x 148 mm)NA
A5 (148 x 210 mm)NA
PRODUCT DESCRIPTIONPrint Mode17
EPSON Stylus Pro 3800/3800C/3850Revision A
AUTOMATIC EXPANSION SPECIFICATION
The driver automatically changes margins that bleed off the edges of paper according
to the paper size.
Note : Print start position can be shifted toward the home position by 8 m by changing the appropriate
setting.
PRODUCT DESCRIPTIONPrint Mode18
EPSON Stylus Pro 3800/3800C/3850Revision A
1.5 Appearance Specifications
This section describes external dimensions and parts names.
1.5.1 Dimensions/Weight
684 mm
1040 mm
293 mm
257 mm
376 mm
550 mm
100 mm
Dimensions
Storage: 684 (W) x 376 (H) x 257 (D) mm
Printing: 684 (W) x 1040 (H) x 550 (D) mm
Weight
18.5 kg (excluding ink cartridges, including Maintenance cartridge)
19.8 kg (including ink cartridges)
1.5.2 Part Names
Ink Cover
Paper Eject
Tray
Paper Support
Edge Guide
Top Cover
Board Paper Tray
Auto Sheet Feeder
Maintenance Cartridge Cover
Paper Support Edge
Guide
Print Head (Nozzle)
Operation Panel
90 mm
Paper Eject
Tray Cover
Rear Paper
Feeder
Exhaust Outlet
Figure 1-5. External Dimensions
USB Interface Connector
Network Interface Connector
AC Connector
Figure 1-6. Parts Names
PRODUCT DESCRIPTIONAppearance Specifications19
EPSON Stylus Pro 3800/3800C/3850Revision A
1.6 Operation Panel
1.6.1 Buttons and Functions
Power LED
A
Paper status LED
B
Ink status LED
C
Power
3
Cancel/Reset
46
Enter
5
Paper Feed/Down
Figure 1-7. Operation Panel
1.6.2 Buttons
Button
1 PowerTurns the power ON or OFF
2 Cancel/Reset
3 Menu/Right
4 Back/Left----
Ink Cover Open/
5
Up
*2
Normal One Press
*1
• Clears error
• Opens I/H Cover
(When the printer runs out of ink)
• During printing
Changes the panel display to the
Printer Status Menu
• When not printing
Shifts the printer into the Panel
Setting Mode
--
1
Functions
Hold Down for
3 Seconds
Cancels the jobInterrupts panel setting
Runs a head
cleaning
Unlocks the Ink
Cover
Back/Left
Ink Cover Open/Up
2
Menu/Right
7
Function at the
Panel Setting
--Power OFF
*3
Moves to the next
menu item (Descent)
Moves to the previous
menu item (Ascent)
Set Value +
Functions
Button
Paper Feed/
6
Down
7 Enter----
Note "*1": The printer is always turned OFF regardless of operation status.
"*2": When turning the power ON while holding down the Cancel button, the maintenance mode
becomes activated. (Refer to
"*3": Deactivated during printing.
Normal One Press
• When paper is set
ASF: Ejects the paper
Manual-Rear: Backfeeds the paper
Manual-Front: Ejects the paper
• When paper is not set
ASF starts paper feeding
• When Manual-Front Tray Cover is
opened.
Manual-Front starts paper feeding
"1.6.7 Maintenance Mode" (p28)
Hold Down for
3 Seconds
--Set Value -
for details.)
Function at the
Panel Setting
• Accepts the change
of setting
• Executes the
selected operation
• Saves the setting
1.6.3 LED
LEDColor DisplaysStatus
ONThe power is ON.
Receiving data, during printing, or executing power off
A
PowerGreen
B
Paper statusRed
C
Ink statusRed
Note *: Alternately turns On and Off every 500 ms. In the case of maintenance call error, they light for 100
ms at intervals of five seconds.
Note : When a service call error occurs, all the LEDs flash.
*
Flashing
OFFThe power is OFF.
ONImpossible to make a print due to the paper status.
Flashing
OFF
ONAn ink-related error is occurring.
Flashing*An ink-related warning is occurring.
OFF
sequence.
• A paper feeding or ejecting error is occurring.
*
• A maintenance call error is occurring.
The papers are in normal condition without an error or
warning.
The inks are in normal condition without an error or
warning.
PRODUCT DESCRIPTIONOperation Panel20
EPSON Stylus Pro 3800/3800C/3850Revision A
1.6.4 Panel Display
Normal indication
1
2
6
4
3
Figure 1-8. Panel Display (Normal indication)
No.ItemDescription
1MessagesPrinter status, operation status, and error messages are displayed.
2User-defined paper No.
Paper type
3
(For Cut-sheet only)
4Platen Gap
5Ink Cartridge StatusThe remaining amount of ink in each cartridge is displayed.
Remaining
Maintenance Cartridge
6
Status
The user-defined paper setting number created by the CUSTOM
PAPER function in the panel setting menu is displayed.
This icon is displayed when the number of paper, except STANDARD
paper, created by the CUSTOM PAPER function in the panel setting is
selected.
The platen gap setting made by the PLATEN GAP function in the
panel setting menu is indicated.
Free space of the Maintenance Cartridge is displayed.
5
Error indication
12
3
Figure 1-9. Panel Display (Error indication)
No.ItemDescription
1Error nameError name is highlighted.
2Error iconError icon is displayed.
3RemedyDescribes the cause of error and gives instructions to clear the error.
Note : When multiple errors occur simultaneously, they are displayed in the order of precedence. The
next error indication appears when previous one is cleared.
Error indication (Displayed with an illustration)
2
1
34
Figure 1-10. Panel Display (Error indication: Displayed with an illustration)
NoItemDescription
1Error nameError name is highlighted.
2Error iconError icon is displayed
3Illustration
4RemedyDescribes the cause of the error and gives instructions to clear the error.
Note : When multiple errors occur simultaneously, they are displayed in the order of precedence. The
next error indication appears when previous one is cleared.
Describes the cause of the error and gives instructions to clear the error
using a illustration.
PRODUCT DESCRIPTIONOperation Panel21
EPSON Stylus Pro 3800/3800C/3850Revision A
1.6.5 Icons on the LCD
PLATEN GAP SETTING
The platen gap specified in PRINTER SETUP and CUSTOM PAPER menus is
indicated with icons as shown below.
IconsStatus
--STANDARD is selected.
NARROW is selected.
WIDE is selected.
WIDER
is selected.
WIDEST is selected.
Table 1-7. Relation between Counters and Remaining Ink
Remaining Ink
No.
0*1Not selected K667-721139-441612-16
195-100762-661234-38176-11
289-94856-611328-33181-5
384-88951-551423-2719
478-831045-501517-2220
573-77
Note "*1": Displays either Matte BK or Photo BK that is not in use when printing.
(%)
"*2": Counter No.19 is displayed when non-genuine ink cartridge(s) is used.
No.
Remaining Ink
(%)
No.
Remaining Ink
(%)
No.
*2
Remaining Ink
Ink Cartridge
Ink Low/Ink Out Indicator
The indicators below is displayed when Ink becomes Low or Out.
No.
Icon
(Ink Low)
123456789
(%)
Ink Out
Error
INK CARTRIDGE STATUS
Ink Counter
Icon
(Ink Out)
The remaining amount of ink in each cartridge is indicated on the panel as shown
below.
ColorsPKCLKLcLLKLmMMKY
124 567891011
0
3
Figure 1-11. Ink Counter
12
13
14
15
16 17 18 19 20
PRODUCT DESCRIPTIONOperation Panel22
EPSON Stylus Pro 3800/3800C/3850Revision A
MAINTENANCE CARTRIDGE STATUS
Maintenance Cartridge Counter
The free space of the Maintenance Cartridge is indicated as shown below.
Figure 1-12. Maintenance Cartridge Status
Table 1-8. Relation between Counters and Remaining Ink
No.Free Space
196-100958-611720-23
291-951053-571815-19
386-901148-521910-14
481-851243-47205-9
577-801339-42211-4
672-761434-38220
767-711529-3323Full
862-661624-28
(%)
No.Free Space
(%)
No.Free Space
(%)
PRODUCT DESCRIPTIONOperation Panel23
EPSON Stylus Pro 3800/3800C/3850Revision A
1.6.6 Menu Settings
Table 1-9. List of Menu Settings
Top MenuMenu ItemsSettings (Bold = default)Explanation
NARROW
PRINTER SETUP
TEST PRINT
PRINTER STATUS
STANDARD
PLATEN GAP
PAPER SIZE CHECK
INITIALIZE SETTINGSEXECUTEAll settings made using the control panel are returned to their default.
NOZZLE CHECK
STATUS SHEETPRINTPrints information on the printer status.
NETWORK STATUS SHEETPRINT
JOB INFORMATIONPRINTPrints information on print jobs stored in the printer up to 10 jobs.
CUSTOM PAPERPRINTPrints setting values set in the CUSTOM PAPER menu.
VERSIONo0XXXX-XX.XX.ICBSDisplays the firmware version installed on the printer. (see "Firmware version indication" (p27))
PRINTABLE PAGES
INK LEVEL
MAINTENANCE TANK
USAGE COUNTINK xxxxx.xmlDisplays ink amount consumed in ml units.
JOB HISTORY
TOTAL PRINTSnnnnnn PAGESDisplays the gross number of printed pages in decimal up to six digits.
(MAINTENANCE TANK)
WIDE
WIDER
WIDEST
ON
OFF
MANUAL
AUTO
(Ink color)
nnnnnnn PAGES
(Ink color)
nn%
nn%
No.0 to No.9
INK xxxxx.xml
PAPER xxxx.x cm
2
Adjusts the gap between the print head and the platen. The set value is returned to the default at every power-on.
When the PAPER TYPE in the CUSTOM PAPER menu is set to other than the default, the PLATEN GAP setting in
the menu takes priority over this setting. (see "PG settings list" (p27))
Setting to OFF deactivates the sensor that detects paper width when paper is loaded. This enables to print on paper
whose width is out of the sensor’s detectable range, however, the user should know that if he/she prints an image
larger than the paper size, the image extended off the edges of the paper is printed directly on the platen.
Prints a nozzle check pattern, firmware version, usage count of paper and ink, and free space in the maintenance
cartridge. Visually check the printed check pattern, and decide whether cleaning is required or not.
Prints a nozzle check pattern, firmware version, usage count of paper and ink, and free space in the maintenance
cartridge. The ink mark sensor scans the printed check pattern and cleaning is automatically carried out if it is judged
necessary.
Prints information on the network status.
Displays the number of pages that can be printed with the installed ink cartridge.
Displays the percentage of ink level in each installed cartridge.
Displays the percentage of free space in the maintenance cartridge.
JOB NO.
Displays the job number assigned by the printer. The No.0 is the latest job.
INK LEVEL
Displays ink amount consumed for each job.
PAPER SIZE
Displays the number of pages of each job.
PRODUCT DESCRIPTIONOperation Panel24
EPSON Stylus Pro 3800/3800C/3850Revision A
Table 1-9. List of Menu Settings
Top MenuMenu ItemsSettings (Bold = default)Explanation
CUSTOM PAPER
MAINTENANCE
HEAD ALIGNMENT
PAPER NUMBER (1-10)
PAPER TYPE
PLATEN GAP
THICKNESS PATTERNPRINT
PAPER FEED ADJUST A
PAPER FEED ADJUST B
DRYING TIME
BLACK INK CHANGEEXECUTESwitches the black ink between Matte and Photo.
POWER CLEANINGEXECUTEPerforms a power cleaning.
CLOCK SETTINGYY/MM/DD HH:MMSets date and time of the internal clock.
CONTRAST ADJUSTMENT
AUTO
MANUAL
STANDARD
PAPER NO.1-10
MATTE THICK
MATTE THIN
PHOTO PLAIN
FINE ART PAPER
REMOTE PANEL PAPER
NARROW
STANDARD
WIDE
WIDER
0.00%
-0.7% to 0.7%
0.00%
-0.7% to 0.7%
0.0 SEC
0.0 SEC to 10.0 SEC
0
-20 - 0 - +20 (dec)
PREM.GLOSSY/LUSTER
PQ INK JET PAPER
ENHANCED MATTE PAPER
0.1 mm
0.2 mm
0.3 mm
0.4 mm
0.5 mm
Paper type and relating settings can be saved and easily retrieved by assigning a number to them. Up to 10 groups of
settings can be stored. When EPSON genuine paper is used, STANDARD should be selected.
Selects a paper type corresponds to the paper.
Adjusts the platen gap according to the selected paper type.
Prints a pattern to detect the thickness of loaded paper. (When STANDARD is selected in the PAPER NUMBER,
this menu is not displayed.)
Sets paper feed amount for the printable area. The amount increases/decreases by the selected percentage of one
meter.
Sets paper feed amount for the bottom area (out of the printable area). The amount increases/decreases by the
selected percentage of one meter.
Sets a time period to stop the print head movement for drying ink.
Adjusts the contrast of the control panel display.
Selects a paper type to be used for the gap adjustment.
Selects a gap to be adjusted manually.
PRODUCT DESCRIPTIONOperation Panel25
EPSON Stylus Pro 3800/3800C/3850Revision A
Table 1-9. List of Menu Settings
Top MenuMenu ItemsSettings (Bold = default)Explanation
NETWORK SETUP
NETWORK SETUP
IP ADDRESS SETTING
IP, SN, DG SETTING
APPLE TALK
MS NETWORK
BONJOUR
INIT NETWORK SETTING
DISABLE
ENABLE
AUTO
PANEL
PING
---
ON
OFF
ON
OFF
ON
OFF
EXECUTE
Disables or enables a network connection. The other NETWORK SETUP menu items appear only when ENABLE
has been selected. Under the following conditions, this setting is automatically changed to DISABLE.
• Every power-on (always returns to the default: DISABLE)
• When the network setup initialization is performed.
• When the PANEL DEFAULT in the maintenance mode is performed.
Select the settings for the IP address to use.
When [PANEL] is selected, the settings in [IP, SN, DG SETTING] are enabled.
Set the IP address, Subnet mask, and default gateway.
Enables (ON)/disables (OFF) AppleTalk.
Enables (ON)/disables (OFF) MS NETWORK.
Enables (ON)/disables (OFF) BONJOUR.
Returns the network I/F related settings to their default.
PRODUCT DESCRIPTIONOperation Panel26
EPSON Stylus Pro 3800/3800C/3850Revision A
PG settings list
The table below lists the platen gap amounts settable with the printer driver, control
panel, and media table.
Table 1-10. PG Setting List
Printer Driver
Paper Thickness
setting
No setting
0.0 to 0.8mm
0.9mm to 1.5mm----3.5
Control Panel
Setting
NARROW
STANDARD
WIDE
WIDER
WIDEST
Media Table or
Printer Driver
PG Setting
Minimum0.9
Small0.9
Middle1.2
Large1.5
Minimum0.9
Small1.2
Middle1.5
Large2.1
Minimum1.2
Small1.5
Middle2.1
Large2.1
Minimum1.5
Small2.1
Middle2.1
Large2.1
Minimum2.1
Small2.1
Middle2.1
Large2.1
PG amount (mm)
Firmware version indication
The table below explains the meaning of the “o0XXXX-xx.xx.IBC” (firmware
version).
Table 1-11. Firmware Version Indication
ItemExplanation
o0
XXXXThe version of the firmware installed on the printer.
xx.xxThe version of the network firmware.
I A code assigned by product. The code of the printer is “8”.
B
C
A code assigned to each printer.
Special version is assigned to “0” (zero).
When the business system functions are enabled, the printer settings are
indicated in hexadecimal (1 to F).
bit0: Graphic printing control function.
0: Disabled
1: Enabled
bit1: Credit function
0: Disabled
bit2: Credit counter
0: The credit function is disabled or the counter is “0” (zero).
1:
The credit function is enabled and the counter is
bit3: Reserved
Shows the custom number when the custom operation has been set using
the special setting menu. “0” appears when such operation is not set.
1 or more.
PRODUCT DESCRIPTIONOperation Panel27
EPSON Stylus Pro 3800/3800C/3850Revision A
1.6.7 Maintenance Mode
HOW TO START & QUIT
Starting Method
Turn the printer On while holding down the Cancel/Reset button.
Quitting Method
Turn the printer Off.
MAINTENANCE MODE MENU LIST
Menu Item
LANGUAGE
UNIT
DEFAULT PANELEXECUTE
Settings
= default)
(Bold
ENGLISH
JAPANESE
FRENCH
GERMAN
ITALIAN
PORTUGUE
SPANISH
DUTCH
METRIC
FEET/INCH
Explanation
Select the language to be displayed on the
LCD panel.
Select a unit of length to be used for various
length information.
All settings made in the following menus are
returned to their default.
PRINTER SETUP menu
PRINTER STATUS menu
CUSTOM PAPER menu
HEAD ALIGNMENT menu
NETWORK SETUP menu
This section explains the basic specifications of the print head.
NOZZLE CONFIGURATION AND COLORS
This printer is equipped with an MACH print head, which employs 180 nozzles per
color. The printer ejects nine different colors of ink through the eight rows of nozzles.
One of the rows is shared by Photo Black and Matte Black inks.
The nozzle configuration as seen from behind the print head is shown below.
Printing method: On-demand ink-jet
Nozzle configuration: 180 nozzles x 8 rows = 1440 nozzles
Table 2-4. Nozzle Rows and Colors
Nozzle RowColor
A
B
C
D
E
F
G
H
Photo BlackMatt Black
Magenta
Cyan
Yellow
Light Light Black
Light Black
Light Cyan
Light Magenta
DRIVE WAVEFORMS
The following four drive waveforms are used to create four print modes.
Table 2-5. Print Modes (Drive Waveforms)
Paper Feed Direction
Waveform
Name
VSD110.08360 x 360280
VSD110.08
VSD210.081440 x 720280
VSD320.162880 x 1440280
Drive Frequency
(kHz)
Print Resolution
(dpi)
720 x 360
720 x 720
CR Speed
(cps)
280
Carriage Moving Direction
Figure 2-4. Nozzle Configuration
OPERATING PRINCIPLESPrint Mechanism40
EPSON Stylus Pro 3800/3800C/3850Revision A
2.3 Ink Supply Mechanism
2.3.1 Ink Flow Path
The ink flow path is shown below.
Ink Selector
+
Dumper
2.3.2 Ink Pressurizing Mechanism
This printer employs an ink pressurizing mechanism to stably supply ink in the ink
cartridge (ink pack) to the print head. This ink pressurizing mechanism consists of a
pressure pump unit installed in an ink supply mechanism and tightly-sealed ink
cartridges. Air pumped into the tightly-sealed ink cartridge from the pressure pump
unit squashes the ink pack in the cartridge, causing the ink inside the pack to be
transferred to the print head.
Ink Cartridge
To Print Head
Air flow path
Ink Cartridge
Pressure Pump
Pressure Sensor Unit
Ink flow path
Figure 2-6. Ink Pressurizing Mechanism
Print Head
Figure 2-5. Ink Flow Path
OPERATING PRINCIPLESInk Supply Mechanism41
EPSON Stylus Pro 3800/3800C/3850Revision A
2.3.2.1 Pressure Pump Unit Mechanism
Accordion unit/Pressure pump motor/Pressure pump home sensor
The accordion unit intakes air and applies pressure by the rotating drive of the pressure
pump motor, and pumps air into the ink cartridges. The pressure pump home sensor
detects the position of the accordion unit.
Pressure pump motor
Applying pressure
CW rotation of the
clutch closes the valve
and applies pressure to
send air toward the ink
cartridges.
Valve
Clutch
Combination Gear, 18, 39
CW rotationCCW rotation
Applying
pressure
Spur Gear, 24.5
Accordion Unit
Spur Gear, 22
Regulator
Reducing
pressure
Clutch
Figure 2-7. Drive Transmission Path
Pressure sensor unit
A reflective photo sensor, which turns on when the air pressure reaches the
predetermined level, controls the amount of pressure. When the air pressure reaches
the predetermined level, film on the air damper expands and activates the reflective
plate causing the sensor to receive light, and the pressurizing state is detected.
Regulator
Stops applying pressure when the power is off or during stand-by. Activated by the
pressure pump motor through the clutch. The regulator opens the valve to reduce
pressure.
Reducing pressure
CCW rotation of the clutch opens
the valve and reduces pressure.
When the air pressure reaches
the predetermined level, the
valve opens as the pressure
overcomes the tension of the
spring that presses the valve.
Pressure Pump
Home Sensor
Spur Gear, 24.5
Accordion Unit
Sensor
Combination Gear 18, 3.9
Clutch
Regulator
Spur Gear, 22
Pressure
Pump Motor
Air DamperFilm
Pressure Sensor Unit
Figure 2-8. Pressure Pump Unit
OPERATING PRINCIPLESInk Supply Mechanism42
EPSON Stylus Pro 3800/3800C/3850Revision A
2.3.3 Ink Change System
This printer has automatic ink change system that switches black ink between Photo
Black and Matte Black. The cartridge holder of this printer keeps both Photo Black and
Matte Black ink cartridges. Each of the black ink cartridges has its own ink supply tube
connected to their respective damper. Both black inks are supplied into the damper, and
one of them is supplied to the print head at one time by means of the ink selector that
changes the ink flow path.
Ink change system consists of an ink change motor, selection cam, selection lever, and
ink change sensor. The following describes the mechanism.
1.Drive of the ink change motor rotates the selection cam.
Ink change sensor detects the rotation angle of the cam.
Changing to Photo Black
Selection
Cam
Selection
Lever
Changing to Matte Black
2.The selection lever moves as the selection cam rotates.
3.The protruded end of the selection lever pushes the selection pin, and the pin
changes the black ink flow path inside the damper.
Ink Change Motor
Ink Change Sensor
Selection Cam
Selection Lever
Selection pin
Pressure of
Selection
Lever
Matte Black
Photo Black
Photo Black
Matt Black
Ink Path
Figure 2-9. Ink Change System
Figure 2-10. Changing Black Ink Path
OPERATING PRINCIPLESInk Supply Mechanism43
EPSON Stylus Pro 3800/3800C/3850Revision A
2.4 Cleaning Mechanism
The cleaning mechanism consists of a pump cap unit and a waste ink pads
(maintenance cartridge).
Pump Motor
The pump motor drives the cap unit, pump, head cleaner, and carriage lock. The table
below shows the operation of each mechanism depending on the rotational direction of
the pump motor.
Table 2-6. Pump Motor Functions
MechanismCCW *CW *
Cap UnitOpen (Uncapping)Close (Capping)
PumpPump releasePump suction
Head Cleaner
Wiper reset
(back to the home)
(moves to the wiping position)
Carriage LockUnlockLock
Note * :The rotation direction as seen from the top of the unit.
Pump Motor
Combination Gear, 15.5, 9.5
Wiper set
Cap Unit/Carriage Lock
The pump motor moves the cap unit up and down. The cap unit goes up to seal the
print head during cleaning and stand-by. Carriage lock operates in synchronization
with the cap unit. When the carriage unit moves to the home position, carriage lock
moves up together with the cap unit and lock the carriage unit.
Cap Unit
Carriage Lock
Cap unit moves up
(capped, locked)
Cap unit moves down
(uncapped, unlocked)
Spur Gear, 13
Pinion Gear
(Pump Motor)
Spur Gear, 26.5
Spur Gear, 13
Spur Gear, 21.5
Intermittent Gear, 21.5
Combination Gear, 16, 11.5
Combination Gear, 13.5, 10
Head Cleaner
Pump
Cap Unit
Carriage Lock
Spur Gear, 21.5
Intermittent
Gear, 21.5
Combination Gear, 15.5, 9.5
Figure 2-12. Cap Unit/Carriage Lock Mechanism
Spur Gear, 26.5
Figure 2-11. Drive Transmission Path
OPERATING PRINCIPLESCleaning Mechanism44
EPSON Stylus Pro 3800/3800C/3850Revision A
Pump Unit
The ink is absorbed from the head nozzles. The sucked waste ink is conveyed to the
waste ink pad through the tube.
The CW rotation of the pump motor rotates the conveyance roller. The roller rotates
pressing the tube to convey the waste ink from the cap unit to the waste ink pad.
The CCW rotation of the pump motor moves the conveyance roller away from the
pressing position.
Head Nozzle
Conveyance Roller
To Waste Ink Pad
Head Cleaner
The head cleaner wipes off ink, dirt or the like from the surface of the head nozzles.
The CW rotation of the pump motor moves the head cleaner to the wiping position.
Head Cleaner
Combination
Gear, 13.5, 10
Intermittent Gear, 21.5
Combination
Gear, 13.5, 10
Combination
Gear, 16, 11.5
Spur Gear,13
Spur Gear, 26.5
Figure 2-13. Pump Unit Mechanism
Combination
Gear,15.5, 9.5
Spur Gear, 21.5
Pinion Gear
(Pump Motor)
Figure 2-14. Head Cleaner Mechanism
OPERATING PRINCIPLESCleaning Mechanism45
EPSON Stylus Pro 3800/3800C/3850Revision A
2.5 Carriage Mechanism
The carriage mechanism consists of a carriage movement mechanism, platen gap
adjustment mechanism, and carriage lock mechanism. For explanation about the
carriage lock mechanism, refer to Cap Unit/Carriage Lock (p.44).
CR Scale
2.5.1 Carriage Movement Mechanism
Carriage movement mechanism consists of a carriage unit, CR motor, timing belt,
carriage guide shaft, CR scale, and CR encoder.
Rotational drive of the CR motor is transmitted to the carriage unit through the timing
belt, and the carriage unit moves left and right along the carriage guide shaft. The CR
encoder installed on the back of the carriage unit reads the jagged surface of the CR
scale and sends the read value to the main board. Position and moving speed of the
carriage unit are controlled based on the read value.
Carriage Unit
CR Scale
CR Encoder
CR Timing Belt
CR Motor
Carriage Guide Shaft
Figure 2-15. Carriage Movement Mechanism
OPERATING PRINCIPLESCarriage Mechanism46
EPSON Stylus Pro 3800/3800C/3850Revision A
2.5.2 Platen Gap Adjustment Mechanism
Platen gap adjustment mechanism consists of an APG motor, carriage unit, and PG sensor.
The carriage unit is equipped with two carriages; main carriage that moves horizontally to
the carriage guide shaft, and the sub carriage that moves vertically to the main carriage.
When the carriage unit moves to the PG adjustment position and the APG motor starts to
rotate, the oval cam turns to move the sub carriage vertically and change the platen gap
amount. Light-shielding plate with a cutout is installed at the end of the shaft to which the
cam is attached, and moves together with the cam. A transmissive photo interrupter sensor
(PG sensor) detects the cutout, determines the detected position as the origin, and changes
the platen gap according to the number of pulses from the origin.
APG Motor
Combination Gear, 20, 34.4
Combination Gear, 13.6, 31.2
Spur Gear, 29.6
Spur Gear, 34.4
PG Shaft
Cam
Table 2-7. PG Positions in Operations
OperationPG
Detecting paper width
(ASF feeding, Rear/Front manual feeding)
Detecting paper width
(ASF feeding after receiving data)
Switch PG according to the print setting.
Starts printingSwitch PG according to the print setting.
At power OFF1.2
PG Sensor
Lightshielding
Plate
Cutout
Cam
Sub Carriage
Spur Gear, 34.4
3.5
Main Carriage
APG Motor
Combination
Gear,20, 34.4
Combination
Gear,13.6, 31.2
Spur Gear, 29.6
Sub Carriage
Cam
Figure 2-16. Drive Transmission Path
The relation between the printer status and the platen gap amount is described below.
Table 2-7. PG Positions in Operations
OperationPG
At power ON1.2
Cleaning starts1.5
NarrowWide
CappingCapping is done in the current PG.
Board paper tray is open3.5
Figure 2-17. Platen Gap Adjustment Mechanism
OPERATING PRINCIPLESCarriage Mechanism47
EPSON Stylus Pro 3800/3800C/3850Revision A
2.6 Paper Feed Mechanism
2.6.1 Paper Feed Path
The printer provides two manual paper feed paths in addition to the ASF to support
thicker paper.
Paper FeedingThicknessType
ASF (Auto Sheet Feeder)0.08 to 0.27 mmSee 1.3.3 Paper Support (p.15)
1
Rear Manual Bypass0.29 to 0.5 mmFine Art Paper
2
Front Manual Bypass1.2 to 1.5 mmHeavy paper like cardboard
3
The following figures show the paper feed paths.
1
2
3
Figure 2-19. Paper Path of Front Manual Bypass
Figure 2-18. Paper Path of ASF & Rear Manual Bypass
OPERATING PRINCIPLESPaper Feed Mechanism48
EPSON Stylus Pro 3800/3800C/3850Revision A
2.6.2 Paper Loading Mechanism
ASF (AUTO SHEET FEEDER)
The ASF, whose driving source is an ASF motor, consists of a LD roller, LD roller
shaft, ASF sensor, hopper, and paper anti-slip tab. The cams on both ends of the LD
roller shaft activate the hopper and the paper anti-slip tab. The ASF sensor (photo
interrupter sensor) controls the rotational position of the LD roller shaft by detecting
the light-shielding plate installed on the shaft. Paper loading operation from the ASF is
described below:
1.Start of the paper loading operation
The ASF motor moves to rotate the LD roller shaft.
2.Feeding paper to the paper loading position
2-1.The LD roller shaft rotates to release the lever that presses the paper anti-
slip tab, and the tabs go down.
Hopper
ASF Motor
2-2.The LD roller shaft rotates to release the hopper actuating the cam that
presses the hopper, and the hopper moves up by the tension of the spring.
Hopper
Hopper Actuating Cam
Standby
LD Roller
Raising
Figure 2-21. Raising the Hopper
3.Picking-up paper
The LD roller shaft rotates to feed a single sheet of paper into the printer with a LD
roller.
Paper
Hopper
LD Roller
Lever
Paper Anti-slipTab
Figure 2-20. Lowering the Paper Anti-slip Tab
LD Roller Shaft
Separation Pad
Retard Roller
Figure 2-22. Picking-up Paper
OPERATING PRINCIPLESPaper Feed Mechanism49
EPSON Stylus Pro 3800/3800C/3850Revision A
4.Pressing the hopper
The hopper cam on the LD roller shaft presses the hopper and remaining paper on
the tray is moved away from the feeding position.
5.Moving the paper anti-slip tabs upward
The LD roller shaft rotates to actuate the lever on the shaft and move the paper
anti-slip tabs upward. The tabs prevent the paper from slipping into the paper
feeding section.
6.Transporting paper in the printer
Paper fed into the printer is transported by the PF roller.
7.Releasing the back end of paper
When the hopper actuating cam presses the hopper further in synchronization with
the rotation of the LD roller, left and right paper guides that regulate the paper
width are extended releasing the back end of paper.
Hopper
Hopper
groove
Actuating
Cam
8.Standing-by
The hopper returns to the stand-by position and ends the paper loading operation.
Position Detection Section
ASF Sensor
Paper Anti-slip Tab
LD Roller Shaft
LD Roller
Hopper
Combination
Gear, 58.22
ASF Motor
Retard Roller
Spur Gear,
Shaft, LD
Figure 2-24. ASF Drive Mechanism
LD Roller Shaft
Paper Holding StatePaper Releasing State
Figure 2-23. Releasing the Back End of Paper
LD Roller
ASF Motor
Combination Gear, 58,22
Spur Gear, Shaft, LD
LD Roller Shaft
Paper Anti-slip Tab
Hopper Assy
Figure 2-25. ASF Drive Transmission Path
OPERATING PRINCIPLESPaper Feed Mechanism50
EPSON Stylus Pro 3800/3800C/3850Revision A
REAR MANUAL BYPASS
When the prescribed time has passed since a paper was supplied from the feeder on the
rear of the printer and the PE sensor detected the paper, the PF roller starts to transport
the paper.
FRONT MANUAL BYPASS
The status of the board paper tray that is used for the front manual feeding is detected
by the leaf switch. The leaf switch is moved by the Board Paper Guide Cam which
moves together with the board paper tray, and according to the switch position, the
board paper tray status is detected.
Board Paper Tray
Leaf Switch
Board Paper
Guide Cam
Tray Closed
Tray Open
Figure 2-26. Board Paper Tray Open Sensor
OPERATING PRINCIPLESPaper Feed Mechanism51
EPSON Stylus Pro 3800/3800C/3850Revision A
2.6.3 Paper Feed Mechanism
The paper feed mechanism mainly consists of a Release mechanism, the PF Motor, and
the feed rollers.
RELEASE MECHANISM
Release mechanism consists of a release unit (including a release motor, release sensor,
and combination gear), paper guide upper assy that presses papers, and paper guide
release shaft that activates the paper guide upper assy.
Rotational drive of the release motor activates the paper guide release shaft through the
combination gear. When the release lever of the paper guide release shaft presses down
the back end of the paper guide upper assy, the paper guide upper assy separates from
the PF roller. When the release motor rotates reversely, the paper guide upper assy
makes contact with the PF roller. The release sensor installed in the release unit and the
light-shielding plate detects the contact condition between the paper guide upper assy
and the PF roller.
Combination Gear, 9.6, 22
Combination Gear, 8, 22
Combination Gear, 8, 22
Combination Gear, 8, 22.986
Combination Gear, 22, 32.4
Light-shielding Plate
Release Motor
Spur Gear, 22
Spur Gear, 20.4
Spur Gear, 22.B
Paper Guide Release Shaft
Paper Guide Upper Assy
Figure 2-27. Drive Transmission Path
OPERATING PRINCIPLESPaper Feed Mechanism52
EPSON Stylus Pro 3800/3800C/3850Revision A
Paper Guide
Upper Assy
Spur Gear, 22
Combination
Gear, 9.6, 22
Combination
Gear, 8, 22.986
Release Sensor
Light-shielding
Plate
Combination
Gear, 22, 32.4
Spur Gear, 22,B
Release Motor
Paper Guide Release Shaft
Combination
Gear, 8, 22
PF Roller
Spur Gear, 20.4
Paper Guide Upper Assy
Holding statusReleasing status
Figure 2-28. Release Mechanism
OPERATING PRINCIPLESPaper Feed Mechanism53
EPSON Stylus Pro 3800/3800C/3850Revision A
PAPER FEED MECHANISM
Paper feed mechanism consists of a PF motor, PF scale, PF encoder, PF roller, front
and rear paper eject rollers, and star wheels. The mechanism transports papers fed from
the feeders and ejects them from the front of the printer.
PF Motor
PF Timing Belt
Combination Gear, PF, Drive
Spur Gear, 31.5
Spur Gear, 68
Front Paper Eject Roller
Spur Gear, 14.4
Rear Paper Eject Roller
Figure 2-29. Drive Transmission Path
PF Motor
OPERATING PRINCIPLESPaper Feed Mechanism54
EPSON Stylus Pro 3800/3800C/3850Revision A
Frame, EJ Assy
PF Roller
Paper
Star Wheel
Front Paper Eject Roller
Rear Paper Eject Roller
Spur Gear, 14.4
PF Encoder
Spur Gear, 68
Spur Gear, 31.5
PF Motor
PF Timing Belt
PF Scale
Combination Gear, PF, Drive
Figure 2-30. Paper Feed Mechanism
OPERATING PRINCIPLESPaper Feed Mechanism55
EPSON Stylus Pro 3800/3800C/3850Revision A
2.7 Ink Mark Sensor
This printer is equipped with the ink mark sensor functioning as multi sensors.
The sensor, located on the bottom of the carriage unit, is a diffuse reflective
photointerruptor that is comprised of a light emitting part (white LED) and a light
receiving part (photoreceiver). The white LED emits light against the paper or
dedicated print pattern printed on paper and the photoreceiver reads the reflected light.
According to the reflected light read by the receiver, the printer calculates correction
values to perform proper corrective actions.
The Ink mark sensor is used for the following adjustments.
Auto Bi-D Adjustment
The sensor scans predetermined patterns printed for the adjustment and detects the
highest density pattern among them. According to the detected result, the printer
calculates Bi-D correction values automatically.
Auto Uni-D Adjustment
The sensor scans predetermined patterns printed for the adjustment and detects the
highest density pattern among them. According to the detected result, the printer
calculates Uni-D correction values automatically.
Auto Nozzle Check
The sensor scans a nozzle check pattern. The pattern is printed with the all nozzles and
each nozzle prints one block. If there is a clogged nozzle, the corresponding block will
not be printed and detected by the sensor, and a head cleaning is performed
automatically.
OPERATING PRINCIPLESInk Mark Sensor56
EPSON Stylus Pro 3800/3800C/3850Revision A
2.8 Other Mechanisms
INK COVER OPEN-CLOSE MECHANISM
To keep the ink cartridges from being removed during printing, opening/closing of the
ink cover is electrically regulated. Opening/closing of the cover is controlled by the
lock mechanism that takes advantage of an electromagnetic solenoid, and the cover can
only be opened by means of the operation panel. When the operation to open the cover
is performed, the solenoid is energized and the lock is released. The solenoid unit is
equipped with a switch sensor that detects opening/closing state of the cover.
Ink Cover Closed
Solenoid
Ink Cover
Ink Cover SensorSolenoid Unit
MAINTENANCE CARTRIDGE COVER OPEN DETECTION
To keep the maintenance cartridge from being removed during printing, a switch
sensor detects opening/closing state of the cover that stores the maintenance cartridge.
Maintenance Cartridge Cover Sensor
Maintenance Cartridge Cover
Cover ClosedCover Open
Figure 2-32. Operation of Maintenance Cartridge Cover
• Flash ROM (32Mbit), SDRAM (64Mbit x 2)
installed
Circuit block diagram
DDR-SDRAM
(IC3)
DDR-SDRAM
(IC19)
Flash ROM
(IC4)
RTC9824
(IC9)
CN67
USB I/F 2.0
Flash ROM
(IC1)
CN102
Network
Ethenet 10/100BASE-TX
BCM5980A2KFBG(IC10)
SDRAM
(IC5)
SDRAM
(IC8)
Figure 2-33. C635 MAIN Board Block Diagram
Custom
ASIC
E01A68C
(IC15)
A6628 (IC13)
A6628 (IC7)
A6627 (IC6)
Custom
ASIC
E09A54RA
(IC11㧕
CN40
CR Motor
CN43
ASF Motor
CN44
Ink Change Motor
CN45
Pressurizing Pump Motor
CN57
Release Motor
CN58
Pump Motor
CN41
PF Motor
CN41
APG Motor
CN69/70/
71/72
Print Head
OPERATING PRINCIPLESOutline of Circuit Boards58
EPSON Stylus Pro 3800/3800C/3850Revision A
2.9.2 Power Supply Board
This section describes the power supply board that generates the power to operate this
printer.
CIRCUIT BLOCK DIAGRAM
The block diagram of C635 Power Supply board is shown below.
DC
output
Control
signal
input
AC input
Input Filter
(Rush current
prevention
circuit
Pseudo-resonance type
separately-excited flyback
1. OCP function
2. OVP function
3. Secondary power
switch function
+42V/0.7A
5VOVP
ESAVE
PSC
Figure 2-34. C635 Power Supply Board Block Diagram
CONTROL SIGNALS
There are three control signals between the C635 MAIN Board and the Power Supply
Circuit Board as shown in the table below.
Table 2-9. Control Signals
Signal NameFunctionOutputRemarks
PS Control
Signal (PSC)
Energy Save
Signal (ESAVE)
Overvoltage
Detection Signal
(OVP)
Power ON39.9 to 44.1 V The PS unit outputs the rated voltage.
Power OFF3V or lessThe PS unit is instantly shut off.
Normal
Operation
Power Saving
Operation
Detection of
overvoltage
39.9 to 44.1 V The PS unit outputs the rated voltage.
It takes less than 500 msec to recover
15V Typ.
0 V
(Power is
shutoff)
from the power saving mode to the rated
voltage.
The power is shut off when the OVP
terminal voltage exceeds 7 V. To recover
from the status, lower the OVP terminal
voltage below 7 V, and reboot the printer
after reinserting the power plug into a
receptacle.
OPERATING PRINCIPLESOutline of Circuit Boards59
EPSON Stylus Pro 3800/3800C/3850Revision A
2.10
Colorimetric Calibration (Color ID) Overview
This printer employs “Colorimetric Calibration (Color ID)” to correct unit-to-unit
variations in color.
Colorimetric Calibration (Color ID) corrects not only the weight of ink droplets which
differs depending on the individual characteristics of print head but also variable
factors such as drive circuit and voltage. This enables a higher-accuracy calibration.
OVERVIEW
1.Printing/ Measuring the color of a correction pattern
A correction pattern printed by a completed product is used for the calibration.
A calibrator is used to perform the color measurement of the printed pattern.
2.Writing the correction value
Correction values are automatically calculated based on the result of the color
measurement and stored in the NVRAM on the main board.
3.Reflecting the correction value
Every time the printer makes a print, the printer driver reads out the correction
values from the NVRAM. Each ink droplet weight and the number of ink droplets
for each dot are corrected according to the information.
Main Unit
Print HeadMain Board
Individual characteristic
of print head
Drive Control
Circuit for
Print Head
Correction of the number of ink droplets
Correction of
ink droplet weight
Variation of elements on
the print head control
circuit
This section explains the basic procedure for troubleshooting problems on the printer
quickly and efficiently.
3.1.1 Preliminary Check
Make sure to verify or perform the following basic items whenever servicing the
printer.
1.There is no foreign material which interferes with the proper operation of the
printer.
2.Print the status sheet, and check the information printed on the sheet to find out
possible causes of the error; if the main units have reached their end of life, or if
there is something wrong with the user-defined panel settings.
3.Both outside and inside of the printer are free of significant dirt. Clean it if
significant dirt is observed.
4.None of the parts or components of the printer are missing, chipped or damaged.
5.All of the harnesses are free of damages and properly connected to their
connectors.
6.The cams and gears in the printer mechanism are engaged correctly showing no
signs of wear.
7.When smudges appear on printed pages, clean the rubber rollers in the printer
mechanism if it solves the problem.
8.The rubber rollers in the printer mechanism are engaged correctly showing no
signs of wear.
9.Initialize the NVRAM on the C635 main board (reset the user-defined panel
settings to their factory default) if necessary.
Execute the DEFAULT PANEL in the Maintenance mode.
W A R N I N G
When handling the lithium battery used for backup of the RTC on
the main board, strictly follow the safety instructions given in
“4.1.1 Precautions” (p86).
C A U T I O N
Before disassembling/reassembling the printer, be sure to turn
the power OFF, confirm the panel display disappears, and
unplug the power code.
Be sure to use the specified tools for maintenance/repair.
To maintain the product’s quality, be sure to use the specified
lubricant and adhesive.
Be sure to perform the adjustments as required.
3.1.2 Troubleshooting Procedure
Follow the flowchart given below to troubleshoot problems efficiently.
Occurrence of Troubles
Error message is
displayed on the LCD
(Page 63)
Warning message is
displayed
(Page 68)
Print Quality Troubles
(Page 82)
Error message is
displayed
(Page 66)
Service Call message is
displayed
(Page 74)
TROUBLE SHOOTINGOverview62
EPSON Stylus Pro 3800/3800C/3850Revision A
3.2 List of Panel Messages
The printer runs diagnostic checks on itself according to various conditions detected by
the mounted sensors. If an error condition is detected as a result of the self-diagnosis,
the printer displays the corresponding error message on its LCD panel.
The error messages are shown on the following list.
Table 3-1. List of Panel Messages
CategoryMessage on LCDDescription
Warning
Error
MAINTENANCE REQUEST
XXXX
INK LOWInk level is low.p66
MAINTENANCE CARTRIDGE
IS NEARLY FULL
SERVICE CALL ERROR
NNNN
PLEASE CONTACT TO THE
REPAIR CENTER
PRINTER ERROR
RESTART THE PRINTER
CARRIAGE LOCKED
RELEASE THE CARRIAGE
LOCK
PAPER JAM
CLEAR JAMMED PAPER
SEE PRINTER GUIDE
FOR INSTRUCTIONS
NO MAINTENANCE CART.
INSTALL THE
MAINTENANCE
CARTRIDGE.
MAINTENANCE COVER
OPEN
CLOSE THE
MAINTENANCE COVER
PAPER FEED ERROR
REMOVE PAPER
AND LOAD PAPER
CORRECTLY
Maintenance Call Warning
The maintenance cartridge is close
to its full status.
A fatal error has occurred.
(Service Call No. is displayed.)
A fatal error has occurred.
(Rebooting the printer is required))
A fatal error has occurred.
(The carriage is locked)p68
A paper jam has occurred.
(Fatal error)
No maintenance cartridge is
recognized.
A maintenance cartridge CSIC read/
write error has occurred.
The maintenance cartridge cover is
open.
Failed to feed paper into the printer.
Ref.
Page
p66
p66
p68
p68
p68
p68
p68
p68
p68
Table 3-1. List of Panel Messages
CategoryMessage on LCDDescription
Error
PAPER FEED ERROR
LOAD PAPER CORRECTLY
AND PRESS PAPER/FEED
BUTTON
PAPER JAM
REMOVE PAPER
CANNOT OPEN COVER
IS THERE ANYTHING ON
THE PRINTER?
PRESS THE UP BUTTON
MAINTENANCE
CARTRIDGE NEARLY FULL
REPLACE THE
CARTRIDGE
NOT ENOUGH INK
REPLACE INK CARTRIDGE
WITH A NEW ONE
MAINTENANCE
PLEASE USE GENUINE
EPSON CARTRIDGES
MAINTENANCE
NON-GENUINE CARTRIDGE!
MAY NOT PERFORM AT
OPTIMUM. CONTINUE?
<YES NO>
MAINTENANCE
THIS MAY VOID EPSON’S
WARRANTY.
DO YOU ACCEPT THIS?
<ACCEPT DECLINE>
MAINTENANCE
CARTRIDGE
FULL
REPLACE THE
CARTRIDGE
Failed to feed board paper into the
printer.
A paper jam has occurred and failed
to eject the paper.
Failed to open the ink cartridge
cover.
The maintenance cartridge is almost
full (insufficient for the required
job).
The ink cartridge is almost empty
(insufficient for the required job).
The maintenance cartridge is not an
EPSON-genuine one.p69
The maintenance cartridge is not an
EPSON-genuine one.
(Confirmation 1)
The maintenance cartridge is not an
EPSON-genuine one.
(Confirmation 2)
The maintenance cartridge is full.
Ref.
Page
p69
p69
p69
p69
p69
p69
p69
p69
TROUBLE SHOOTINGList of Panel Messages63
EPSON Stylus Pro 3800/3800C/3850Revision A
Table 3-1. List of Panel Messages
CategoryMessage on LCDDescription
Error
FRONT FEED SLOT OPEN
PRESS THE
DOWN
BUTTON
AND REMOVE
PAPER
FRONT FEED SLOT OPEN
CLOSE THE
FRONT MANUAL
FEED SLOT
FRONT FEED SLOT OPEN
LOAD
MEDIA AND
PRESS THE
DOWN BUTTON
FRONT SLOT CLOSED
OPEN THE
FRONT MANUAL
FEED SLOT
FRONT SLOT CLOSED
OPEN THE
FRONT MANUAL
FEED SLOT
NO INK CARTRIDGE
INSTALL INK CARTRIDGE
INK CARTRIDGE ERROR
REPLACE CARTRIDGE
INK CARTRIDGE
PLEASE USE GENUINE
EPSON INK CARTRIDGE
INK CARTRIDGE
NON-GENUINE CARTRIDGE!
MAY NOT PERFORM AT
OPTIMUM. CONTINUE?
<YES NO>
A board paper could not be
removed.
The board paper tray was opened in
the middle of printing.
No paper has been loaded on the
board paper tray.
The board paper tray was closed in
the middle of printing.
The board paper tray was closed
when a paper in the tray needs to be
removed.
No ink cartridge is recognized.
An ink cartridge CSIC read/write
error has occurred.
The ink cartridge is not an EPSONgenuine one.
The ink cartridge is not an EPSONgenuine one. (Confirmation 1)
Ref.
Page
p70
p70
p70
p70
p70
p70
p70
p70
p71
Table 3-1. List of Panel Messages
CategoryMessage on LCDDescription
Error
INK CARTRIDGE
THIS MAY VOID EPSON’S
WARRANTY.
DO YOU ACCEPT THIS?
<ACCEPT DECLINE>
INK CARTRIDGE
REPLACE INK CARTRIDGE
INK COVER OPEN
CLOSE THE INK COVER
COMMAND ERROR
CHECK DRIVER SETTINGS
PAPER SKEW
PRESS THE
DOWN BUTTON
LOAD PAPER
CORRECTLY
PAPER ERROR
PRESS THE
DOWN BUTTON
LOAD PAPER
CORRECTLY
BORDERLESS ERROR
PRESS THE DOWN BUTTON
LOAD THE CORRECT SIZE
PAPER
PAPER EJECT ERROR
PRESS THE
DOWN BUTTON
AND REMOVE
PAPER
PAPER FEED ERROR
LOAD PAPER
CORRECTLY
PRESS THE
DOWN BUTTON
PAPER REMOVE
REMOVE PAPER
FROM THE REAR
The ink cartridge is not an EPSONgenuine one. (Confirmation 2)
The ink cartridge is empty.
The ink cartridge cover was opened.
A command error has occurred.
The loaded paper is skewed.
Failed to detect the paper width.
The paper size is not available for
the borderless printing.
Failed to eject a cut sheet of paper.
A multi-feed was detected and the
papers were ejected automatically
without printing.
Failed to eject paper fed from the
rear manual tray.
Ref.
Page
p71
p71
p71
p71
p71
p71
p72
p72
p72
p72
TROUBLE SHOOTINGList of Panel Messages64
EPSON Stylus Pro 3800/3800C/3850Revision A
Table 3-1. List of Panel Messages
CategoryMessage on LCDDescription
Error
PAPER ERROR
LOAD PAPER
PAPER SIZE ERROR
LOAD THE CORRECT SIZE
PAPER
PAPER SENSOR ERROR
PRESS THE BUTTON
LOAD DIFFERENT PAPER
PAPER SENSOR ERROR
PRESS THE BUTTON
LOAD THE CORRECT PAPER
CLEANING ERROR
PRESS THE CANCEL/RESET
BUTTON
CLEANING ERROR
PRESS THE
DOWN BUTTON
AND REMOVE
THICK PAPER
PAPER SETTING ERROR
CHECK PAPER SOURCE IN
THE DRIVER SETTINGS
AND LOAD PAPER
CORRECTLY
No paper is detected.
The size of loaded paper does not
match with the paper size setting.
The ink mark sensor sensitivity
adjustment could not be made.p72
Failed to determine the adjustment
value based on the result detected
by the ink mark sensor. (could not
determine, or the determined value
fell outside the adjustable range.)
Clogging nozzles are detected by
the nozzle check after running a
head cleaning.
A head cleaning was attempted with
a board paper loaded, or before
printing when the PW sensor was
OFF.
The paper has been loaded in the
tray that is different from the one
specified in the driver setting.p73
Ref.
Page
p72
p72
p73
p73
p73
TROUBLE SHOOTINGList of Panel Messages65
EPSON Stylus Pro 3800/3800C/3850Revision A
3.3 Remedies for Warning Messages
When a Warning error occurs, the printer displays a Warning message instead of “READY” or “PRINTING” messages, however, it does not interfere with printing operation.
REMEDIES
The following tables explains the Warning messages and remedies.
Table 3-2. Remedies for Warning Messages
Message on LCDDescriptionRemedy
MAINTENANCE REQUEST
XXXX
INK LOWThe remaining ink is low.Prepare a new ink cartridge.
MAINTENANCE CARTRIDGE
IS NEARLY FULL
See MAINTENANCE Request XXXX on page 67.
The free space of the maintenance cartridge is low.Prepare a new maintenance cartridge.
TROUBLE SHOOTINGRemedies for Warning Messages66
EPSON Stylus Pro 3800/3800C/3850Revision A
MAINTENANCE REQUEST XXXX
When a Maintenance Request error occurs, the printer displays on the LCD a hexadecimal code of “NNNN” which correspond to the bit numbers assigned to error statuses as shown
in the table below.
Table 3-3. Maintenance Request Errors
Bit assignment (Binary)
012345678910111213-15
10(NA)0(NA) (NA)000(NA) (NA)00(RSVD)0001
0
1(NA)0(NA) (NA)000(NA) (NA)00(RSVD)0002
00(NA)
00(NA)0(NA) (NA)
00(NA)0(NA) (NA)0
00(NA)0(NA) (NA)00
00(NA)0(NA) (NA)000(NA) (NA)
00(NA)0(NA) (NA)000(NA) (NA)0
Ex.
00(NA)1(NA) (NA)010(NA) (NA)00(RSVD)0088
1(NA) (NA)000(NA) (NA)00(RSVD)0008
100(NA) (NA)00(RSVD)0040
10(NA) (NA)00(RSVD)0080
1(NA) (NA)00(RSVD)0100
10(RSVD)0800
1(RSVD)1000
XXXX
(Hexa-
decimal)
CauseRemedy
The counter of waste ink used for
printing margins at borderless printing
has reached the specified value.
The CR scan pass counter has reached
the specified value. (ink supply tube
has reached its end of life.)
The RTC backup battery becomes
exhausted.
The pump counter has reached the
specified value.
The date has not been set.Execute RTC initialization using the Adjustment Program.
The RTC backup battery power has
temporarily dropped.
The ink cartridge installation/removal
counter has reached the upper limit.
The number of drives of the ink
selector has reached the upper limit.
RTC backup battery has not been set.
Replace the waste ink pads for borderless printing
(POROUS PAD,INK WASTE BOX, LEFT/RIGHT) with
new ones, and clear the counter using the Adjustment
Program.
Replace the tube (INK,SYSTEM,ASSY.) with a new one,
and clear the counter using the Adjustment Program.
Replace the battery with a new one, and execute RTC
initialization using the Adjustment Program.
Replace the pump cap unit (PUMP,CAP,ASSY.) with a new
one, and clear the counter using the Adjustment Program.
Wait until the power recovers.
Replace the waste ink pad (POROUS PAD,TRAY,INK
EJECT) in the cartridge holder with a new one, and clear the
counter using the Adjustment Program.
Replace the ink selector (INK,SYSTEM,ASSY.) with a new
one, and clear the counter using the Adjustment Program.
Install a battery, and execute RTC initialization using the
Adjustment Program to set date and time.
CR life
Unassigned
Description
Borderless printing absorber
Unassigned
Unassigned
Battery exhaustion
Pump cap unit life
Date not set
Battery voltage
Unassigned
Unassigned
Holder absorber life
Unassigned
Ink selector life
NOTE: Ex): When “Maintenance Request 0088” is displayed.
As “0088” in hexadecimal means “1000 1000” in binary, you can find out the code is assigned to Bit-3 and Bit-7 referring to the above table. In this case, two
errors are occurring simultaneously. (Bit-3: battery exhaustion/ Bit-7: the date and time has not been set.)
TROUBLE SHOOTINGRemedies for Warning Messages67
EPSON Stylus Pro 3800/3800C/3850Revision A
3.4 Remedies for Error Messages
The following tables explains the error messages and remedies.
Message on LCDDescriptionRemedy
SERVICE CALL ERROR
NNNN
PLEASE CONTACT TO THE
REPAIR CENTER
PRINTER ERROR
RESTART THE PRINTER
CARRIAGE LOCKED
RELEASE THE CARRIAGE
LOCK
PAPER JAM
CLEAR JAMMED PAPER
SEE PRINTER GUIDE
FOR INSTRUCTIONS
NO MAINTENANCE CART.
INSTALL THE
MAINTENANCE
CARTRIDGE.
MAINTENANCE COVER
OPEN
CLOSE THE
MAINTENANCE COVER
PAPER FEED ERROR
REMOVE PAPER
AND LOAD PAPER
CORRECTLY
See 3.5 Remedies for Service Call Error on page 74.
A firmware bug, or some circuit component(s) on the main board is (are)
damaged.
The power is turned On without removing the protective material for the print
head.
A paper jam has occurred.Remove the jammed paper and load paper correctly.
The PE sensor detected paper is still in the paper feed path. Torn scrap of paper
or some foreign matter may exist.
Paper feeding was physically interrupted.Check the paper feed path and remove any scrap of paper or foreign matter.
No maintenance cartridge has been installed.Install a maintenance cartridge.
The maintenance cartridge cannot be recognized by the printer.Remove the maintenance cartridge and reinstall it correctly. If this does not
The printer cannot read/write data from/to the CSIC of the maintenance
cartridge properly.
The cover of the maintenance cartridge is open.Close the maintenance cartridge cover.
The maintenance cartridge cover sensor cannot detect that the cover is closed. Check the cover. If any damage is observed, replace it with a new one.
The PW sensor cannot detect the paper when the PF motor has driven a
predetermined number of steps.
Paper feeding was physically interrupted.Check the paper feed path and remove any scrap of paper or foreign matter.
Turn the printer Off and reboot it after waiting for a while. If a Service Call
error occurs, see 3.5 Remedies for Service Call Error (p74) for further
troubleshooting.
Remove the protective material.
Check the paper feed path around the PE sensor and remove any scrap of paper
or foreign matter.
solve the problem, replace the cartridge with a new one.
Replace the maintenance cartridge with a new one.
Check that the following connectors are connected correctly.
Connector on the maintenance cartridge cover sensor
CN62 on the main board
Replace the maintenance cartridge cover sensor.
See 4.3.6.4 MAINTENANCE CARTRIDGE SENSOR on page 128.
Remove the paper and load paper correctly.
TROUBLE SHOOTINGRemedies for Error Messages68
EPSON Stylus Pro 3800/3800C/3850Revision A
Message on LCDDescriptionRemedy
PAPER FEED ERROR
LOAD PAPER CORRECTLY
AND PRESS PAPER/FEED
BUTTON
PAPER JAM
REMOVE PAPER
CANNOT OPEN COVER
IS THERE ANYTHING ON
THE PRINTER?
PRESS THE UP BUTTON
MAINTENANCE
CARTRIDGE NEARLY FULL
REPLACE THE
CARTRIDGE
NOT ENOUGH INK
REPLACE INK CARTRIDGE
WITH A NEW ONE
MAINTENANCE
PLEASE USE GENUINE
EPSON CARTRIDGES
MAINTENANCE
NON-GENUINE CARTRIDGE!
MAY NOT PERFORM AT
OPTIMUM. CONTINUE?
<YES NO>
MAINTENANCE
THIS MAY VOID EPSON’S
WARRANTY.
DO YOU ACCEPT THIS?
<ACCEPT DECLINE>
MAINTENANCE
CARTRIDGE
FULL
REPLACE THE
CARTRIDGE
Feeding board paper was physically interrupted.Check if the paper is thicker than available thickness. Use paper of available
thickness.
Check the paper. If it is curled or creased, change it with a normal one.
The PE sensor still detects the paper after the PF motor has driven a
predetermined number of steps.
The Paper Feed/Down button was pressed three times to remove paper fed
from the rear manual tray.
The cartridge cover cannot open due to an obstruction on the top of it.If any obstruction is observed, remove it.
The maintenance cartridge is near capacity. The available space may not be
enough to continue the job.
The ink cartridge is near empty.Replace the ink cartridge with a new one.
The installed maintenance cartridge is not the EPSON genuine cartridge.Replace the maintenance cartridge with an EPSON genuine one.
The installed maintenance cartridge is not the EPSON genuine cartridge.After selecting “NO”, replace the maintenance cartridge with a genuine one.
The installed maintenance cartridge is not the EPSON genuine cartridge.After selecting “NO”, replace the maintenance cartridge with a genuine one.
The maintenance Cartridge is full.Replace the Maintenance Cartridge with a new one.
Remove jammed paper, if any.
Check the connection between the PE sensor and the main board and fix any
abnormality.
Replace the PE sensor (PAPER, DETECTOR, ASSY).
See 4.4.1.4 PAPER, DETECTOR, ASSY. on page 185.
Replace the maintenance cartridge with a new one.
TROUBLE SHOOTINGRemedies for Error Messages69
EPSON Stylus Pro 3800/3800C/3850Revision A
Message on LCDDescriptionRemedy
FRONT FEED SLOT OPEN
PRESS THE
DOWN
BUTTON
AND REMOVE
PAPER
FRONT FEED SLOT OPEN
CLOSE THE
FRONT MANUAL
FEED SLOT
FRONT FEED SLOT OPEN
LOAD
MEDIA AND
PRESS THE
DOWN BUTTON
FRONT SLOT CLOSED
OPEN THE
FRONT MANUAL
FEED SLOT
FRONT SLOT CLOSED
OPEN THE
FRONT MANUAL
FEED SLOT
NO INK CARTRIDGE
INSTALL INK CARTRIDGE
INK CARTRIDGE ERROR
REPLACE CARTRIDGE
INK CARTRIDGE
PLEASE USE GENUINE
EPSON INK CARTRIDGE
The release roller is locked because the Board Paper Tray (front feed slot) has
been held open for longer than a predetermined time period.
The Board Paper Tray (front feed slot) was opened when it should not be
Press the Paper Feed/Down button to unlock the release roller.
When no paper has been loaded on the tray, close the tray.
Close the Board Paper Tray (front feed slot).
opened.
The tray was opened after feeding paper from the rear manual tray using the
operation panel.
The tray was open when paper feeding from the ASF was started.
The tray was opened before the power-on initialization sequence is finished.
The Board Paper Tray (front feed slot) was opened when the printer became
ready for printing.
The Board Paper Tray (front feed slot) is closed when the tray is selected as the
Load paper on the Board Paper Tray (front feed slot), and press the Paper Feed/Down button.
Open the Board Paper Tray (front feed slot).
paper source.
The Board Paper Tray Open sensor is not connected.Check the connection between the sensor and the main board, and fix any
abnormality.
The Board Paper Tray Open sensor is broken.Replace the sensor.
The Board Paper Tray (front feed slot) is closed, but the PE sensor is detecting
Open the Board Paper Tray (front feed slot).
paper.
The Board Paper Tray Open sensor is not connected.Check the connection between the sensor and the main board and fix any
abnormality.
The Board Paper Tray Open sensor is broken.Replace the sensor with a new one.
The printer cannot recognize the ink cartridge.Install an ink cartridge. If already installed, remove and reinstall it.
Replace the ink cartridge.
The printer cannot read/write data from/into the CSIC correctly.Check the connection between the CSIC and the main board, and fix any
abnormality.
Replace the ink cartridge.
The installed ink cartridge is not the EPSON genuine cartridge.Replace the ink cartridge with an EPSON genuine one.
TROUBLE SHOOTINGRemedies for Error Messages70
EPSON Stylus Pro 3800/3800C/3850Revision A
Message on LCDDescriptionRemedy
INK CARTRIDGE
NON-GENUINE CARTRIDGE!
MAY NOT PERFORM AT
OPTIMUM. CONTINUE?
<YES NO>
INK CARTRIDGE
THIS MAY VOID EPSON’S
WARRANTY.
DO YOU ACCEPT THIS?
<ACCEPT DECLINE>
INK CARTRIDGE
REPLACE INK CARTRIDGE
INK COVER OPEN
CLOSE THE INK COVER
COMMAND ERROR
CHECK DRIVER SETTINGS
PAPER SKEW
PRESS THE
DOWN BUTTON
LOAD PAPER
CORRECTLY
PAPER ERROR
PRESS THE
DOWN BUTTON
LOAD PAPER
CORRECTLY
The installed ink cartridge is not the EPSON genuine cartridge.After selecting “NO”, replace the ink cartridge with a genuine one.
The installed ink cartridge is not the EPSON genuine cartridge.After selecting “NO”, replace the ink cartridge with a genuine one.
The ink cartridge is empty.Replace the ink cartridge with a new one.
The Ink Cover is open.Close the Ink Cover.
The Ink Cover Open sensor is broken.Replace the Ink Cover Open sensor (LOCK, COVER, ASSY.).
See 4.3.6.1 LOCK, COVER, ASSY. on page 123.
The printer received an invalid command.Cancel the job and reset the printer by pressing the Cancel/Reset button for
more than three seconds.
Check if the correct printer driver has been installed on the PC. If not, install
the correct driver.
Paper skew was detected when paper was fed from the rear or front manual
tray.
Unsupported media (such as a transparency) was fed, and the PW sensor
cannot detect the media.
The PW sensor cannot detect the paper because the paper is similar in color to
the platen.
The PW sensor is broken.Replace the PW sensor (BOARD ASSY., DETECTOR, PW; B)
Press the Paper Feed/Down button to eject the paper.
Press the Paper Feed/Down button to eject the paper, and change it with a
correct one. Or, set the PAPER SIZE CHECK in the PRINTER SETUP menu
to OFF.
Press the Paper Feed/Down button to eject the paper, and change it with a
different colored one. Or, set the PAPER SIZE CHECK in the PRINTER
SETUP menu to OFF.
See 4.3.11.4 BOARD ASSY., DETECTOR, PW; B on page 174.
TROUBLE SHOOTINGRemedies for Error Messages71
EPSON Stylus Pro 3800/3800C/3850Revision A
Message on LCDDescriptionRemedy
BORDERLESS ERROR
PRESS THE DOWN BUTTON
LOAD THE CORRECT SIZE
PAPER
PAPER EJECT ERROR
PRESS THE
DOWN BUTTON
AND REMOVE
PAPER
PAPER FEED ERROR
LOAD PAPER
CORRECTLY
PRESS THE
DOWN BUTTON
PAPER REMOVE
REMOVE PAPER
FROM THE REAR
PAPER ERROR
LOAD PAPER
PAPER SIZE ERROR
LOAD THE CORRECT SIZE
PAPER
PAPER SENSOR ERROR
PRESS THE BUTTON
LOAD DIFFERENT PAPER
The paper edges are not on the Porous Pad because the size of the loaded paper
is not supported for borderless printing.
The paper edges are not on the Porous Pad because the paper is not set in the
correct position.
The PAPER SIZE CHECK in the PRINTER SETUP menu has been set to
OFF.
The paper length is longer than available length shown below. The PE sensor
does not turn Off even after the PF Motor has driven a predetermined number
of steps.
Cut sheet: Less than 1,200 mm
Board paper: Less than 24 inches
The paper is stuck in the paper path, and cannot be ejected.Remove the paper.
The PE sensor is broken.Replace the PE sensor (PAPER, DETECTOR, ASSY.).
Sheets of paper stacked on the ASF became misaligned while performing
duplex-printing.
The paper cannot be ejected normally for some reasons.Remove the paper.
The PE sensor is broken.Replace the PE sensor (PAPER, DETECTOR, ASSY.).
Feeding paper from the ASF failed twice in succession. Load paper and press the Paper Feed/Down button.
A print job specifying the rear or front manual feed tray as its paper source is
received, but the PE sensor does not detect the paper.
The size of the loaded paper is different from that is specified in the received
job.
The low reflective paper is used. Press the Cancel/Reset button and load a different type of paper.
An error has occurred at the Ink Mark sensor sensitivity check.
Press the Paper Feed/Down button to eject the paper.
Load paper of the size available for borderless printing.
See 1.3.3 Paper Support on page 15.
Press the Paper Feed/Down button to eject the paper, and set the paper
correctly.
Set the PAPER SIZE CHECK to ON.
Press the Paper Feed/Down button to eject the paper.
See 4.4.1.4 PAPER, DETECTOR, ASSY. on page 185.
Reset the ejected blank paper and press the Paper Feed/Down button.
See 4.4.1.4 PAPER, DETECTOR, ASSY. on page 185.
Check the PF roller and replace it if worn.
See 4.4.1.1 ASF, ASSY. on page 179.
Replace the PE sensor (PAPER, DETECTOR, ASSY.).
See 4.4.1.4 PAPER, DETECTOR, ASSY. on page 185.
Load paper whose size matches with the job setting.
Replace the Ink Mark sensor (BOARD ASSY., INK MARK).
See 4.3.11.3 BOARD ASSY., INK MARK on page 173.
TROUBLE SHOOTINGRemedies for Error Messages72
EPSON Stylus Pro 3800/3800C/3850Revision A
Message on LCDDescriptionRemedy
PAPER SENSOR ERROR
PRESS THE BUTTON
LOAD THE CORRECT PAPER
CLEANING ERROR
PRESS THE CANCEL/RESET
BUTTON
CLEANING ERROR
PRESS THE
DOWN BUTTON
AND REMOVE
THICK PAPER
PAPER SETTING ERROR
CHECK PAPER SOURCE IN
THE DRIVER SETTINGS
AND LOAD PAPER
CORRECTLY
An error has occurred while the Ink Mark sensor is reading the print pattern for
adjustment.
Clogged nozzles cannot be cleared even after running head cleaning cycle a
predetermined number of times.
Head cleaning was attempted when board paper had been fed.Remove the board paper and close the Board Paper Tray.
The ASF is specified as the paper source of the received job, but paper has
been loaded on the front or rear manual feed tray.
Feeding paper from the ASF is attempted using the operation panel after
receiving a job specifying the front or rear manual feed tray as its paper source.
Press the Cancel/Reset button and load a different type of paper.
Press the Cancel/Reset button to clear the error, and retry the head cleaning.
Cancel the job, or press the Paper Feed/Down button to eject the the paper.
TROUBLE SHOOTINGRemedies for Error Messages73
EPSON Stylus Pro 3800/3800C/3850Revision A
3.5 Remedies for Service Call Error
The following tables explains the Service Call error messages and remedies.
C H E C K
P O I N T
Make sure to check the related connectors and cables for poor
connection or any abnormality before replacing any electrical part
as instructed in the Remedy column. If the replacement does not
solve the problem, replace the main board.
Error CodeError NameDescriptionRemedy
1101CR life errorThe CR scan path counter has reached a predetermined level.
(The end of life of the Ink Supply Tube)
1120CR lock errorThe CR encoder failed to read the CR scale during a
predetermined time period.
The carriage unit does not operate due to a CR motor failure or
some reasons.
1121CR reverse errorAn abnormal operation (reveres movement) of the carriage was
detected a predetermined number of times.
1122CR overspeed errorThe carriage moved faster than a designated level.Check the CR scale (SCALE, CR) for incorrect attachment,
Replace the Ink Supply Tube (INK, SYSTEM, ASSY) and reset
the counter using the Adjustment Program.
See 4.3.9.3 INK, SYSTEM, ASSY. on page 151..
Replace the CR encoder (BOARD ASSY., ENCODER, CR).
See 4.3.11.2 BOARD ASSY., ENCODER on page 172.
Replace the CR scale (SCALE, CR).
See 4.3.7.1 SCALE, CR on page 130.
Move the carriage unit manually to check if it moves smoothly,
and fix any abnormality.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
Check the CR scale (SCALE, CR) for incorrect attachment,
scratch, dirt, and fix any abnormality.
Replace the CR scale (SCALE, CR).
See 4.3.7.1 SCALE, CR on page 130.
Replace the CR encoder (BOARD ASSY., ENCODER, CR).
See 4.3.11.2 BOARD ASSY., ENCODER on page 172.
scratch, dirt, and fix any abnormality.
Replace the CR encoder (BOARD ASSY., ENCODER, CR).
See 4.3.11.2 BOARD ASSY., ENCODER on page 172.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
TROUBLE SHOOTINGRemedies for Service Call Error74
EPSON Stylus Pro 3800/3800C/3850Revision A
Error CodeError NameDescriptionRemedy
1123Duty over errorAn abnormal load is applied to the CR motor.Check the carriage shaft surface for any foreign matters, and
remove it if any.
Check that the carriage shaft and the contact points between the
carriage unit and the main frame are properly lubricated.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
1124Drive timeover errorOne cycle movement cannot be finished during a predetermined
time period after power-on.
1125CR home position detection error
1126CR lock release errorThe carriage unit cannot be unlocked.
1127CR lock set errorThe printer cannot lock the carriage unit.
1130Overspeed error (PID-load positioning)The carriage speed detected by the CR encorder exceeded the
1131Drive timeover error (PID-load positioning) The condition to stop the CR motor is not satisfied when the CR
1132Out of sync. (PID-load positioning)The carriage unit position error detected by the CR encoder fell
1133Positioning time-out (PID-load positioning) The carriage unit cannot reach the target position.Check that the CR timing belt is properly attached.
The carriage home position cannot be detected because the Pump
Cap unit does not work to unlock the carriage at power-on.
limit.
motor has driven for a predetermined time period.
outside the specified limits.
Replace the CR encoder (BOARD ASSY., ENCODER, CR).
See 4.3.11.2 BOARD ASSY., ENCODER on page 172.
Replace the CR scale (SCALE, CR).
See 4.3.7.1 SCALE, CR on page 130.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
Replace the Pump Cap unit (PUMP, CAP ASSY.) and clear the
usage counter using the Adjustment Program.
See 4.3.9.1 PUMP, CAP ASSY. on page 148.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Replace the CR encoder (BOARD ASSY., ENCODER, CR).
See 4.3.11.2 BOARD ASSY., ENCODER on page 172.
Replace the CR scale (SCALE, CR).
See 4.3.7.1 SCALE, CR on page 130.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
Check that the CR timing belt is properly attached.
Check the CR timing belt’s tension. Correct it if not proper.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
Check the CR timing belt’s tension. Correct it if not proper.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
TROUBLE SHOOTINGRemedies for Service Call Error75
EPSON Stylus Pro 3800/3800C/3850Revision A
Error CodeError NameDescriptionRemedy
1134Integral term overload (PID-load
positioning)
1135Encoder test error (PID-load positioning)Some abnormalities were found in the encoder test result.Check the CR scale (SCALE, CR) for any dirt, and clean it if any
1221PF measurement errorAn abnormal load is applied to the PF motor.Check all the parts that are driven by the PF motor for any
1222Drive timeover errorThe condition to stop the PF motor is not satisfied when the PF
1220Overspeed errorThe motor speed detected by the PF encorder exceeded the limit. Replace the PF motor (MOTOR, RELEASE, ASSY).
1223Encoder test errorSome abnormalities were found in the encoder test result.Check the PF scale (SCALE, PF) for any dirt, and clean it if any
1224Out of sync. The positioning error detected by the PF encoder fell outside the
An abnormal load is applied to the CR motor.Check the carriage shaft surface for any foreign matters, and
remove it if any.
Check that the carriage shaft and the contact points between the
carriage unit and the main frame are properly lubricated.
Replace the CR motor (MOTOR ASSY., CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
dirt is observed.
Check the CR encoder (BOARD ASSY., ENCODER, CR) for
incorrect attachment, scratch, dirt, and fix any abnormality.
Replace the CR encoder (BOARD ASSY., ENCODER, CR).
See 4.3.11.2 BOARD ASSY., ENCODER on page 172.
abnormal load, and fix any abnormality.
Replace the PF motor (MOTOR, RELEASE, ASSY).
See 4.3.10.3 MOTOR, RELEASE, ASSY. on page 167.
Replace the PF motor (MOTOR, RELEASE, ASSY).
motor has driven for a predetermined time period.
specified limits.
See 4.3.10.3 MOTOR, RELEASE, ASSY. on page 167.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
See 4.3.10.3 MOTOR, RELEASE, ASSY. on page 167.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
dirt is observed.
Check the PF encoder (BOARD ASSY., ENCODER, PF) for
incorrect attachment, scratch, dirt, and fix any abnormality.
Replace the PF encoder (BOARD ASSY., ENCODER, PF).
See 4.3.6.2 ENCODER, PF, ASSY. on page 126.
Check that the PF timing belt is properly attached.
Check the PF timing belt’s tension. Correct it if not proper.
Replace the PF motor (MOTOR, RELEASE, ASSY).
See 4.3.10.3 MOTOR, RELEASE, ASSY. on page 167.
TROUBLE SHOOTINGRemedies for Service Call Error76
EPSON Stylus Pro 3800/3800C/3850Revision A
Error CodeError NameDescriptionRemedy
1225Positioning time-outThe PF roller cannot be rotated to the specified point.Check that the PF timing belt is properly attached.
Check the PF timing belt’s tension. Correct it if not proper.
Replace the PF motor (MOTOR, RELEASE, ASSY).
See 4.3.10.3 MOTOR, RELEASE, ASSY. on page 167.
1226Integral term overloadAn abnormal load is applied to the PF motor.Check all the parts that are driven by the PF motor for any
abnormal load, and fix any abnormality.
Replace the PF motor (MOTOR, RELEASE, ASSY).
See 4.3.10.3 MOTOR, RELEASE, ASSY. on page 167.
131BHead driver (transmission gate) temp. error The temperature of the head driver has reached the upper limit.Check the head FFC for connection status. Reconnect the FFC
correctly.
Replace the print head.
See 4.3.9.5 PRINT HEAD on page 159.
The main board is broken.Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
1400Pressure motor drive timeoverThe target pressure cannot be achieved after the Pressure motor
has driven for a predetermined time period (40 seconds).
The home position of the Pressure pump cannot be detected
because the ridges of the accordion unit are adhered to each other,
or the Pressure pump home sensor is broken.
1401Air leaksThe Pressure pump has air leaks.Check that the pressure tube is properly connected. Reconnect the
1403Pressure reducing errorThe pressure cannot be reduced.Replace the pressure pump (PURESSURE, PUMP, ASSY).
1404Pump movement cycle over errorThe Pressure pump performed its movement cycle a
predetermined number of times (60 cycles), but the pressure does
not reach the specified level due to a malfunction of the pump,
sensor or motor.
Because of air leaks, the specified pressure cannot be obtained.Replace the ink cartridge.
Air is leaking through a gap between the ink cartridge and the ink
cartridge holder due to an obstruction between them.
Check junction of the ink cartridge and the ink cartridge holder,
and remove any obstruction between them if any.
Replace the ink cartridge.
Replace the pressure pump (PURESSURE, PUMP, ASSY).
Replace the pressure pump (PURESSURE, PUMP, ASSY).
See 4.3.12.1 PRESSURE, PUMP, ASSY. on page 176.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
tube correctly if not.
Replace the pressure pump (PURESSURE, PUMP, ASSY).
See 4.3.12.1 PRESSURE, PUMP, ASSY. on page 176.
See 4.3.12.1 PRESSURE, PUMP, ASSY. on page 176.
Replace the pressure pump (PURESSURE, PUMP, ASSY).
See 4.3.12.1 PRESSURE, PUMP, ASSY. on page 176.
Check junction of the ink cartridge and the ink cartridge holder,
and remove any obstruction between them if any.
TROUBLE SHOOTINGRemedies for Service Call Error77
EPSON Stylus Pro 3800/3800C/3850Revision A
Error CodeError NameDescriptionRemedy
1410Drive time monitor time-out (PUMP)The Pump motor run away out of control.Turn the printer power On and Off.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
142DPump cap unit life errorThe pump counter has reached its upper limit.Replace the Pump Cap Unit (PUMP, CAP, ASSY), and reset the
counter using the Adjustment Program.
See 4.3.9.1 PUMP, CAP ASSY. on page 148.
1425CSIC communication time-outThe printer cannot read/write data from/into the CSIC of the ink
cartridge or the maintenance cartridge.
1430Holder ink pad errorThe ink cartridge installation/removal counter has reached the
specified limit.
1431Ink selector errorThe number of drives of the Ink Selector has reached the specified
limit.
1432Ink selector drive timeoverChanging the ink path by the Ink Selector cannot be completed
during a predetermined time period due to a malfunction of the
Ink Selector (its sensor or motor).
1434Ink cover unlock errorThe cartridge cover cannot open due to an obstruction on the top
of it.
The ink cover open sensor is broken and cannot detect an open/
close status of the cover.
The ink cover solenoid is broken and cannot unlock the cover.Replace the ink cover solenoid.
1501Release phase detection errorThe release roller position sensor cannot detect the actuator after
the release motor has driven a predetermined number of steps.
1502Drive time monitor time-out
The condition to stop the release motor are not satisfied when the
release motor has driven for a predetermined time period.
Check the connection between the CSIC and the main board and
fix any abnormality.
Replace the ink cartridge or the maintenance cartridge.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Replace the ink pad in the holder (POROUS PAD,TRAY,INK
EJECT) and reset the counter using the Adjustment Program.
See 4.3.9.4 POROUS PAD, TRAY, INK EJECT on page 158.
Replace the Ink Selector (INK, SYSTEM, ASSY.) and reset the
counter using the Adjustment Program.
See 4.3.9.3 INK, SYSTEM, ASSY. on page 151.
Replace the Ink Selector (INK, SYSTEM, ASSY.) and reset the
counter using the Adjustment Program.
See 4.3.9.3 INK, SYSTEM, ASSY. on page 151.
Remove any obstruction on the cover.
Replace the ink cover Open sensor.
See 4.3.6.1 LOCK, COVER, ASSY. on page 123.
See 4.3.6.1 LOCK, COVER, ASSY. on page 123.
Replace the release motor (MOTOR, RELEASE, ASSY).
See 4.3.10.3 MOTOR, RELEASE, ASSY. on page 167.
Replace the release roller position sensor (Release Sensor).
See 4.3.6.3 RELEASE SENSOR on page 127.
Replace the release roller position sensor (Release Sensor).
See 4.3.6.3 RELEASE SENSOR on page 127.
Replace the release motor (MOTOR, RELEASE, ASSY).
See 4.3.10.3 MOTOR, RELEASE, ASSY. on page 167.
TROUBLE SHOOTINGRemedies for Service Call Error78
EPSON Stylus Pro 3800/3800C/3850Revision A
Error CodeError NameDescriptionRemedy
150CPF phase detection errorThe APG sensor cannot detect the origin point when the APG
motor has driven for a predetermined time period.
1511Drive time monitor time-out (APG)The APG motor run away out of control.Turn the printer power On and Off.
1520Drive time monitor time-out (CR)The CR motor run away out of control.Turn the printer power On and Off.
1531ASF phase detection errorA status detected by the ASF sensor does not change when the
ASF motor has driven for a predetermined time period.
1535Pressure pump home detection errorThe home position of the Pressure pump cannot be detected at
power-on because the ridges of the accordion unit are adhered to
each other, or the Pressure pump home sensor is broken.
1550Borderless print ink pad errorThe counter for the waste ink used at the bleed-off margins for
borderless printing has reached its upper limit.
1600Paper width sensor obstruction errorA foreign substance on the platen was detected at power-on.Remove any dirt or foreign substances from the plate.
1601Paper width sensor malfunctionThe PW sensor is broken.Replace the PW sensor (BOARD ASSY., DETECTOR, PW;B).
1A23Invalid RTC dataThe various absolute time data stored in the NVRAM is
abnormal.
1A26RTC communication time-outThe RTC circuit on the main board is malfunctioning.1. Turn the power Off and remove the lithium battery.
Replace the APG motor (MOTOR, ASSY, APG).
See 4.3.5.1 MOTOR ASSY., APG on page 118.
Replace the APG sensor.
See 4.3.6.5 APG SENSOR on page 129.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Replace the ASF motor (MOTOR, ASSY, ASF).
See 4.3.5.2 MOTOR ASSY., ASF on page 120.
Replace the ASF sensor.
See 4.4.1.3 ASF SENSOR on page 184.
Replace the Pressure Pump (PURESSURE, PUMP, ASSY).
See 4.3.12.1 PRESSURE, PUMP, ASSY. on page 176.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Replace the ink pad for borderless print (POROUS PAD, INK
WASTE BOX, RIGHT/LEFT) and reset the counter using the
Adjustment Program.
See 4.3.9.6 POROUS PAD, INK WASTE BOX, RIGHT/ POROUS
PAD, INK WASTE BOX, LEFT on page 162.
Replace the PW sensor (BOARD ASSY., DETECTOR, PW;B).
See 4.3.11.4 BOARD ASSY., DETECTOR, PW; B on page 174.
Replace the CR motor (MOTOR, ASSY, CR).
See 4.3.5.3 MOTOR ASSY., CR on page 121.
See 4.3.11.4 BOARD ASSY., DETECTOR, PW; B on page 174.
Reset the RTC using the Adjustment Program and set the correct
date and time.
2. After a several seconds, reattach the battery and turn the power
back On.
3. If the printer recovers from the error, Reset the RTC using the
Adjustment Program and set the correct date and time
TROUBLE SHOOTINGRemedies for Service Call Error79
EPSON Stylus Pro 3800/3800C/3850Revision A
Error CodeError NameDescriptionRemedy
1A37Thermistor sensor errorThe head FFC is not correctly connected.Check the head FFC, and reconnect it correctly.
The head thermistor detected the head temperature fell outside the
specified range.
The head thermistor is broken.
1A38Transistor ambient temp. errorThe transistor is broken. Replace the main board (BOARD ASSY., MAIN).
The thermistor detected a temperature outside the specified range.
1A40IC22 errorThe destination setting is wrong.Correct the destination setting.
2000NVRAM errorAn NVRAM erase or write error has occurred.Replace the main board (BOARD ASSY., MAIN).
2002SDRAM errorAn SDRAM read/write error has occurred.Replace the main board (BOARD ASSY., MAIN).
2003FLASH BOOT SUM CHECK errorFailed to install the firmware.Reinstall the firmware.
The FlashROM is broken.Replace the main board (BOARD ASSY., MAIN).
2009FLASH SUM CHECK errorFailed to install the firmware.Reinstall the firmware.
The FlashROM is broken.Replace the main board (BOARD ASSY., MAIN).
200AFirmware loading errorThe SDRAM is broken.Replace the main board (BOARD ASSY., MAIN).
200BInsufficient internal memoryThere is something wrong with the firmware.Install a normal firmware.
3000AC power line shut-offThe AC power was shut off due to a power failure, unplugged,
power supply board failure, or main board failure.
Replace the print head.
See 4.3.9.5 PRINT HEAD on page 159.
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Check the power cable (from the power outlet to the socket on the
printer) for poor connection or breaks.
Replace the power supply board (BOARD ASSY., POWER
SUPPLY).
See 4.3.4.2 BOARD ASSY., POWER SUPPLY on page 115.
Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
TROUBLE SHOOTINGRemedies for Service Call Error80
EPSON Stylus Pro 3800/3800C/3850Revision A
Error CodeError NameDescriptionRemedy
DXXXError code for debuggingThe main board is broken.Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
There is something wrong with the firmware.Install a normal firmware.
FXXXCPU-related errorThe main board is broken.Replace the main board (BOARD ASSY., MAIN).
See 4.3.4.1 BOARD ASSY., MAIN on page 112.
There is something wrong with the firmware.Install a normal firmware.
TROUBLE SHOOTINGRemedies for Service Call Error81
EPSON Stylus Pro 3800/3800C/3850Revision A
3.6 Remedies for Print Quality Troubles
This section provides troubleshooting of print quality troubles classifying them by observed symptom.
SymptomDescriptionRemedy
Dot missingThe nozzles are clogging with ink.Clear the clogged nozzles following the procedure below.
1. Run a manual head cleaning using the operation panel or the printer driver. (If
the symptom does not change after running the cleaning cycle four times,
proceed to the next step.)
2. Run a power cleaning cycle using the operation panel.
Replace the print head.
See 4.3.9.5 PRINT HEAD on page 159.
Ink cannot be fired normally due to a failure of the parts listed in the Remedy
column.
Ink smear (printed area)The paper is contaminated by ink smear in the paper feed path.Check the PF roller for ink smudges, and clean it if any dirt is observed.
Inspect the following parts, and fix any abnormality.
Pump Cap Unit (PUMP, CAP, ASSY)
See 4.3.9.1 PUMP, CAP ASSY. on page 148.
The tube of the CAP ASSY., PUMP is disconnected.
The tube of the CAP ASSY., PUMP has become flat.
The cap rubber is broken.
The cleaning blade is broken or some foreign substances have adhered to
the blade.
There is something wrong with the connection of the ink cartridge, ink holder,
tube, damper, and print head. (Replace the INK SYSTEM, ASSY.)
The head FFC is not connected correctly.
Print head See 4.3.9.5 PRINT HEAD on page 159.
Main board See 4.3.4.1 BOARD ASSY., MAIN on page 112.
Paper is rubbed against the print head.Widen the platen gap.
TROUBLE SHOOTINGRemedies for Print Quality Troubles82
EPSON Stylus Pro 3800/3800C/3850Revision A
SymptomDescriptionRemedy
Ink smear (backside)Paper is curled or creased.Change the paper with a normal one.
The paper is contaminated by ink smear in the paper feed path.Check the platen and PF roller for ink smudges, and clean them if any dirt is
observed.
C A U T I O N
The waste ink pads for borderless printing are not securely attached and
contaminating paper.
Horizontal bandingPaper setting made in the printer driver is wrong.Correct the paper setting.
There is something wrong with paper feeding.Carry out the PF adjustment.
The print head has not been adjusted properly.Carry out the Print Head Slant Adjustment (PF) and the Print Head Slant
The PF belt’s tension is not proper.Carry out the PF Timing Belt Tension Adjustment.
Vertical banding (partly)There is something wrong with the carriage unit movement.
Check the waste ink pads (POROUS PAD, INK WASTE BOX, RIGHT/LEFT) and
reattach them correctly.
See Chapter 5 "ADJUSTMENT"..
Check the PF scale (SCALE, PF) for any dirt, and clean it if any dirt is observed.
Check the PF encoder (BOARD ASSY., ENCODER, PF) for scratch, dirt, and
clean it if any dirt is observed.
Replace the PF encoder (BOARD ASSY., ENCODER, PF).
See 4.3.6.2 ENCODER, PF, ASSY. on page 126.
Adjustment (CR). See Chapter 5 "ADJUSTMENT".
See Chapter 5 "ADJUSTMENT".
Check the CR scale (SCALE, CR) for attachment condition, scratch and dirt, and
fix any abnormality.
Check the CR timing belt for scratch and foreign substances, and fix any
abnormality.
Check the carriage shaft for foreign substances, and remove them if any.
Check that the carriage shaft and the contact points between the carriage unit and
the main frame are properly lubricated.
Check the position of the FFC holder of the ink tube, and correct it if it is not
positioned as specified. See Chapter 4 "DISASSEMBLY & ASSEMBLY".
If the PAPER SIZE CHECK in the PRINTER SETUP menu has been
set to OFF, the printer carry out a required job even if the paper size
setting does not match with the loaded paper. The printer will print on
the platen if the loaded paper is smaller than the image size. If not
necessary, change the setting to ON.
TROUBLE SHOOTINGRemedies for Print Quality Troubles83
EPSON Stylus Pro 3800/3800C/3850Revision A
SymptomDescriptionRemedy
Vertical banding (overall)Bi-D and Uni-D adjustments have not been carried out properly.Carry out the Auto Bi-D and the Auto Uni-D adjustments.
See Chapter 5 "ADJUSTMENT".
The carriage unit cannot move smoothly.Check the CR timing belt, and replace it if worn.
Check the CR motor is correctly installed.
Image is grainyThe adjustments have not been carried out properly.Carry out the Print Head Slant Adjustment (PF).
See Chapter 5 "ADJUSTMENT".
Carry out the Print Head Slant Adjustment (CR).
See Chapter 5 "ADJUSTMENT".
Carry out the PF Adjustment.
See Chapter 5 "ADJUSTMENT".
Carry out the Auto Bi-D and the Auto Uni-D adjustments.
See Chapter 5 "ADJUSTMENT".
Carry out the PG Position Adjustment.
See Chapter 5 "ADJUSTMENT".
TROUBLE SHOOTINGRemedies for Print Quality Troubles84
DISASSEMBLY & ASSEMBLY
CHAPTER
4
EPSON Stylus Pro 3800/3800C/3850Revision A
4.1 Overview
This section describes procedures for disassembling the main components of the
product. Unless otherwise specified, disassembled units or components can be
reassembled by reversing the disassembly procedure.
WARNING
Procedures which, if not strictly observed, could result in personal injury are
described under the heading “WARNING”.
CAUTION
“CAUTION” signals a precaution which, if ignored, could result in damage to the
equipment.
CHECK POINT
Important tips for procedures are described under the heading “CHECK POINT”.
REASSEMBLY
If the assembly procedure is different from the reversed disassembly procedure,
the correct procedure is described under the heading “REASSEMBLY”.
ADJUSTMENT
Any adjustments required after reassembly of components or parts are described
under the heading “ADJUSTMENT REQUIRED”. Be sure to perform the
specified adjustments with reference to Chapter 5 “ADJUSTMENT”.
When you have to remove any parts or components that are not described in this
chapter, refer to “7.3 ASP List” (p267) in the Appendix.
4.1.1 Precautions
Before starting disassembly or reassembly of the product, read the following
precautions given under the headings “WARNING” and “CAUTION”.
W A R N I N G
This printer is equipped with a lithium battery. When handling
the lithium battery, the following precautions should be
followed.
x When replacing the battery, replace it with a specified type
of battery. Using a different type of battery may cause excess
heat or explosion.
x Dispose of used batteries according to manufacture’s
instructions and local regulations. Contact your local
government agency for information about battery disposal
and recycling.
x When disposing of the battery, be sure to securely cover the
positive terminal (+) of the battery with a tape to prevent
combustion or explosion.
x Do not charge the battery.
x Do not use the battery if it is discolored or damaged, or if any
leakage of electrolyte is observed.
x Do not dismantle, solder or heat the battery. Doing so could
result in leakage of electrolyte, heat generation, or explosion.
x Do not heat the battery or dispose of it in fire.
x If the electrolyte leaked from the battery contacts with your
skin or gets into your eyes, rinse it off with clean water and
see a doctor immediately.
As the power switch is installed on the secondary side of the
power circuit, power is always supplied unless the power cord
is unplugged. Unless otherwise stated, be sure to unplug the
power code before disassembling or assembling the printer to
prevent electric shock and damage to the circuit.
Always wear gloves for disassembly and reassembly to avoid
injury from sharp metal edges.
If ink gets in your eye, flush the eye with fresh water and see a
doctor immediately.
Never touch the ink or wasted ink with bare hands. If ink
comes into contact with your skin, wash it off with soap and
water immediately. If irritation occurs, contact a doctor.
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C A U T I O N
Ensure sufficient work space for servicing.
Locate the printer on a stable and flat surface.
The ink-path-related components or parts should be firmly and
securely installed on the printer to prevent ink from leakage.
Use only recommended tools for disassembly, assembly or
adjustment of the printer.
When using compressed air products; such as air duster, for
cleaning during repair and maintenance, the use of such
products containing flammable gas is prohibited.
Apply lubricants and adhesives as specified.
Be careful not to soil the printer or the floor with the leaked ink
when removing the ink-path-related components or parts.
Spread a sheet of paper or cloth on the floor in advance.
Do not touch electrical circuit boards with bare hands as the
elements on the board are so sensitive that they can be easily
damaged by static electricity. If you have to handle the boards
with bare hands, use static electricity discharge equipment such
as anti-static wrist straps.
When reassembling the printer, make sure to connect the
connectors of the electric components or parts correctly and
securely. Use extreme care when connecting FFCs (flexible flat
cables). Improper connection of the FFCs, such as inserting
them diagonally into the connectors, could cause shortcircuiting and lead to breakdown of the electric elements on the
boards.
When reassembling the printer, make sure to route the FFCs
and other cables as specified in this chapter. (Failure to do so
may cause an unexpected contact of the cables with sharp metal
edges, or lead to lower the noise immunity.)
When the printer has to be operated with the covers removed,
take extra care not to get your fingers or clothes caught in
moving parts.
When you have to remove any parts or components that are
provided as after-service-parts but are not described in this
chapter, carefully observe how they are installed and make
sure to remember it before removing them.
When you removed any parts or components that are secured
with black acetate tape or two-sided tape, be sure to reinstall
and secure them with the tape as exactly the same as they were.
C A U T I O N
Disassembling the frame and some components of the printer is
prohibited because they are assembled with precise
measurements in 1/100 mm unit at the factory.
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4.1.2 Orientation Definition
The following figure defines the orientation of the printer, which is applicable to
chapter 4.
Up
Rear
Left
Right
Front
4.1.3 Tools
To protect the printer from damage, use the tools indicated in the following table.
Table 4-1. Tools
Name
Precision screwdriver, No. 2Commercially
Phillips screwdriver, No. 0Commercially
Phillips screwdriver, No. 1Commercially
Phillips screwdriver, No. 2Commercially
Flat-blade screwdriverCommercially
Long-nose pliersCommercially
TweezersCommercially
NipperCommercially
Epson Part
Number
available
available
available
available
available
available
available
available
Note
---
---
---
140 mm or longer shaft length is
recommended.
---
---
---
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Down
Figure 4-1. Orientation Definition
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4.1.4 Screws
The following table indicates the screws used in the printer.
Table 4-2. Screws
NameColorDefinition
Protective ScrewSilver Special Screw
C.B.P. 3x8Silver Phillips Bind P-tite Screw
C.B.S. 3x8Silver Phillips Bind S-tite Screw
C.B.P. 3x6Silver Phillips Bind P-tite Screw
C.B.S. 3x6Silver Phillips Bind S-tite Screw
C.F.S. 3x6Silver Phillips Flat Head S-tite Screw
C.B.(O) 4x8
C.P.S. 2.6x3Silver Phillips Pan Head S-tite Screw
C.C.S. 3x4Silver Phillips Cup Head S-tite Screw
C.B.P. 2.5x8Silver Phillips Bind Head P-tite Screw
C.B.S. 2.5x4Silver Phillips Bind Head S-tite Screw
C.B.S. (P4) 3x8Silver Phillips Bind Head S-tite Screw with Plain Washer 1
C.P.B. 1.7x8Silver Phillips Pan Head P-tite Screw
Shaft, Mount, PlateSilver
Phillips Bind Head S-tite Screw with Outside Toothed
Green
Lock Washers
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4.1.5 Chapter Organization
The maintenance parts of this product are classified into two groups according to the
site they are repaired. Therefore, disassembling procedures are divided into two groups
as described below.
2.Hold down the Ink Cover Open/Up button on the operation panel for more than
three seconds. The COVER, IH, ASSY. will be unlocked and slightly opened.
3.Open the COVER, IH, ASSY.
4.Press the Ink Lever of the each Ink Cartridge to release the lock.
5.Remove the Ink Cartridges.
C A U T I O N
Never touch the IC chips on the Ink Cartridges. Doing so may
cause a detection error of the Ink Cartridges or a malfunction
of the printer.
Never touch the ink supply port of the Ink Cartridges as ink
2.Slightly lift the Maintenance Cartridge and pull it out from the main unit.
C A U T I O N
Never touch the IC chip on the Maintenance Cartridge. Doing so
may cause a detection error of the Maintenance Cartridge or a
malfunction of the printer.
2.Press the right side of the COVER, IH, ASSY. in the direction of the arrow to
release the guide pin from the main unit. Then disengage the left guide pin, and
remove the COVER, IH, ASSY.
As the COVER, IH, ASSY is locked by the electric system, be sure
to open the COVER, IH, ASSY. with the power turned on. Never
force the COVER, IH, ASSY. open, or the lock system (LOCK,
COVER, ASSY.) may be broken. (Refer to “4.3.2.1 Ink Cartridge”