MUTOH SC-550, SC-650, SC-750, SC-1000, SC-1300 Maintance Manual
Maintenance Manual
SC CUTTING PLOTTER
MUTOH EUROPE N.V. AP-74030, Rev./ B
2 AP-74030, Rev / B
3 AP-74030, Rev / B
COPYRIGHT NOTICE
COPYRIGHT © 2001 Mutoh Europe N.V. all rights reserved.
This document may not be reproduced by means, in whole or in part, without written permission of the
copyright owner.
This document is furnished to support the Mutoh SC-series cutting plotter. In consideration of the furnishing
of the information contained in this document, the party to whom it is given assumes its custody and control
and agrees to the following :
1) The information herein contained is given in confidence, and any part thereof shall not be copied or
reproduced without written consent of Mutoh Europe N.V.
2) This document or the contents herein under no circumstances, shall be used in the manufacture or
reproduction of the article shown and delivery of this document shall not constitute any right or license to
do so.
FCC WARNING
This equipment complies with the requirements for a class A computing device in the FCC rules, part 15,
subpart J.
Operation of this device in a residential area may interfere with television or operating utilities.
Cutters generate weak radio signals and may interfere with television reception and utilities. If the cutter
does interfere with radio or TV reception, try the following :
· Change the direction of your radio and TV reception antenna or feeder.
· Change the direction of the cutter.
· Move either the cutter or the receiving antenna so that there is more distance between them.
· Be sure the cutter and the receiving antenna are on separate power lines.
.
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5 AP-74030, Rev / B
TABLE OF CONTENTS
Maintenance Manual................................................................................................1
1. SPECIFICATIONS.................................................................................................9
1.1. Mutoh SC-series Cutting Plotter............................................................................................... 9
1.2. SC cutting plotter, environment.............................................................................................. 10
1.3. Function keys. .........................................................................................................................11
2. SYSTEM BLOCK DIAGRAM. ...............................................................13
2.1. Block diagram SC-series (1st version). ...................................................................................13
2.2. Block diagram SC-series (2nd version)....................................................................................14
2.3. Block diagram SC-550 (1
st
version)........................................................................................15
2.4. Block diagram SC-550 (2
nd
version)....................................................................................... 16
3. INTERFACES............................................................................................................ 17
3.1. Serial interface RS-323C (standard). ......................................................................................17
3.1.1. RS-232C pin configuration. .............................................................................................18
3.1.2. Serial cable configuration. ...............................................................................................18
3.2. Centronics interface (Standard). .............................................................................................19
3.2.1. Centronics interface Pin configuration. ...........................................................................19
4. TROUBLESHOOTING...................................................................................21
4.1. Recoverable errors. .................................................................................................................21
4.1.1. RECOVERABLE SYSTEM ERRORS ...........................................................................21
4.1.2. COMMUNICATION ERRORS ......................................................................................22
4.1.3. LANGUAGE ERRORS...................................................................................................23
4.2. Unrecoverable errors............................................................................................................... 24
4.2.1. Processor errors................................................................................................................24
4.2.2. X – Y Servo errors. ..........................................................................................................24
4.2.3. Cutting head errors...........................................................................................................25
4.2.4. Other errors. .....................................................................................................................25
4.3. Problem symptoms and suggested actions.............................................................................. 26
4.3.1. Processor errors................................................................................................................26
4.3.2. X- Y Servo errors............................................................................................................. 26
4.3.3. Cutting head errors...........................................................................................................27
4.3.4. Other errors. .....................................................................................................................27
5. SPECIALIZED DIAGNOSTICS............................................................29
5.1. Diagnostics overview.............................................................................................................. 29
5.1.1. Diagnostics with SC-keyboard.........................................................................................29
5.1.2. Diagnostics with optional LCD keyboard........................................................................ 30
5.2. Diagnostics with SC-keyboard................................................................................................32
5.2.1. Initialising the EEPROM. ................................................................................................32
5.2.2. Aging................................................................................................................................ 33
5.2.3. Drawings for quality check. .............................................................................................33
5.2.4. Measuring the CUTTING MAT height. ..........................................................................34
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5.2.5. Adjusting the SHEET OFF system. .................................................................................34
5.2.6. Backup plots (on paper only). ..........................................................................................35
5.3. Diagnostics with optional LCD keyboard............................................................................... 36
5.3.1. Diagnost 1. .......................................................................................................................37
5.3.2. Diagnost. 2 .......................................................................................................................38
5.3.3. Diagnost. 3 .......................................................................................................................39
5.3.4. Diagnost. 4 .......................................................................................................................40
5.3.5. Diagnost. 5 .......................................................................................................................40
5.3.6. Diagnost. 6 .......................................................................................................................42
5.3.7. Adjust. 7........................................................................................................................... 42
5.3.8. Adjust. 8........................................................................................................................... 42
5.3.9. Adjust. 9........................................................................................................................... 43
5.3.10. Adjust. 10....................................................................................................................... 46
6. PARTS REPLACEMENT AND ADJUSTMENT................ 47
6.1. Maintenance access table for parts replacement. ....................................................................47
6.2. Mechanical parts. ....................................................................................................................48
6.2.1. Covers Left and Right : removal and installation. ...........................................................48
6.2.2. Transparent cover : Removal and installation..................................................................49
6.2.3. PCB box :open and close. ................................................................................................50
6.2.4. Y-rail cover : Removal and installation. ..........................................................................51
6.2.5. Grid cover : Removal and installation. ............................................................................51
6.2.6. Cutting head : Removal and installation.......................................................................... 53
6.2.7. Grid rollers : removal and installation. ............................................................................54
6.2.8. Y-drive belt (long) : removal and installation.................................................................. 55
6.2.9. Pressure roller pressure adjustment.................................................................................. 58
6.2.10. Sheeting off mechanism : mechanical alignment. .........................................................59
6.3. Electronical parts.....................................................................................................................60
6.3.1. Main PC board : Removal and installation. .....................................................................60
6.3.2. Main and terminal PCB SC-550 : Removal and installation. ..........................................61
6.3.3. Dip switch settings on Main PC board.............................................................................62
6.3.4. EEPROM initialisation and replacement. ........................................................................63
6.3.5. Power supply board : removal and installation................................................................ 64
6.3.6. Power supply board SC-550 : removal and installation................................................... 65
6.3.7. Power supply output connections. ...................................................................................65
6.3.8. Terminal Board : removal and installation. .....................................................................66
6.3.9. Keyboard : removal and installation. ...............................................................................67
6.3.10. X-motor and drive belt : removal and installation. ........................................................68
6.3.11. Y-motor and drive belt : removal and installation. ........................................................68
6.3.12. Head flex cable : removal and installation.....................................................................69
6.3.13. Paper sensors : removal and installation. ....................................................................... 70
6.3.14 Transparent cover sensor : removal and installation.......................................................70
6.3.15. Pressure roller UP/DOWN sensor : removal and installation........................................ 71
6.3.16. Pressure roller UP/DOWN sensor SC-550 : removal and installation........................... 71
6.3.17. Fan motors : removal and installation............................................................................72
7. JIG TOOL LIST.......................................................................................................73
7.1. Jig tool list...............................................................................................................................73
7.2. Special glue. ............................................................................................................................ 73
7 AP-74030, Rev / B
8. PARTS LISTS SC-SERIES.......................................................................... 75
8.1. Body and Covers.....................................................................................................................75
8.2. Cover right + keyboard assy. ..................................................................................................77
8.3. Cover left assy......................................................................................................................... 78
8.4. Transparent cover assy............................................................................................................79
8.5. PCB box. .................................................................................................................................80
8.6. Head flex cable assy................................................................................................................ 81
8.7. Pressure roller UP/DOWN mechanism................................................................................... 82
8.8. X-motor assy. .......................................................................................................................... 84
8.9. X-rail assy. ..............................................................................................................................85
8.10. Y-motor assy. ........................................................................................................................ 87
8.11. Y-rail assy. ............................................................................................................................88
8.12. Y-axis drive belt assy............................................................................................................ 89
8.13. Y-drive pulley assy + mounting bracket. .............................................................................. 90
8.14. Y-axis return pulley assy....................................................................................................... 91
8.15. Pressure roller assy................................................................................................................92
8.16. Cutting head assy. .................................................................................................................94
8.17. Sideplate left (ME-20599). ...................................................................................................99
8.18. Sideplate right (ME-20600). ...............................................................................................100
9. PARTS LISTS SC-550.................................................................................... 101
9.1. Body and covers SC-550.......................................................................................................101
9.2. Cover right + keyboard assy SC-550. ...................................................................................102
9.3. Cover left assy SC-550. ........................................................................................................103
9.4. PCB box left and right SC-550. ............................................................................................104
9.5. Penhead flex cable assy SC-550. ..........................................................................................106
9.6. X-motor Assy SC-550........................................................................................................... 107
9.7. X-rail assy SC-550. ............................................................................................................... 108
9.8. Y-MOTOR Assy SC-550......................................................................................................109
9.9. Y-axis drive belt assy SC-550............................................................................................... 110
9.10. Y-drive pulley assy + mounting bracket SC-550................................................................ 111
9.11. Y-axis return pulley assy SC-550. ......................................................................................112
9.12. Y-rail assy SC-550. ............................................................................................................. 113
9.13. Pressure roller UP/DOWN mechanism SC-550. ................................................................114
9.14. Pressure roller assy SC-550. ...............................................................................................115
9.15. Cutting head assy SC-550. .................................................................................................. 117
8 AP-74030, Rev / B
Maintenance Manual – SC Cutting Plotter
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1. SPECIFICATIONS.
1.1. Mutoh SC-series Cutting Plotter
Cutting area SC-550 : 100 – 540 mm x 4 m
SC-650 : 100 – 630 mm x 12 m
SC-750 : 100 – 780 mm x 12 m
SC-1000 : 100 – 1030 mm x 12 m
SC-1300 : 100 – 1200 mm x 12 m
Max. addressable cut length 50 meter
Maximum media thickness 1.2 mm (1 mm for SC-550)
Drive mechanism Friction
Knife / Cut type / principle Drag
Mechanical resolution 0.005 mm
Accuracy 0.15 % (0.20 % for SC-550)
Repeatability 0.15 mm / m
Knife types 30°, 45° 60° Offset 0.3 & 0.5 mm
Speed 1000 mm / s (600 mm / s for SC-550)
Acceleration 4G (pen UP), 3G (pen DOWN)
2G for SC-550
PEN UP / DOWN cycles 40 / sec.
Pressure range 20 – 500 g
Interface (standard) RS – 232 / centronics
Input buffer 1 Mb standard / 4 Mb optional
No optional buffer on SC-550
Graphic languages MHGL, MHGL/2, HGL/2 compatible
& MCGL (Calcomp compatible)
Configurable origin Yes
Offset adjustment range
0 ® 1 mm
Integrated intelligence Fuzzy logic / Vector look-ahead / Curve & Arc
smoothing
Auto sheet off function Yes (not on SC-550)
Replot function Up to 100 copies
Power requirements 100 to 120 VAC 50/60 Hz
200 to 240 VAC 50/60 HZ
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1.2. SC cutting plotter, environment.
The location where you set up your equipment is very important. Please see to it that it meets following
conditions :
q Power supply of 100 to 120 VAC 50/60 Hz or 200 to 240 VAC 50/60 Hz.
q Ambient conditions :
o Operating environment
§ Temperature : 5°C to 40°C (41°F to 104°F)
§ Humidity : 35% - 75% non-condensation
o Recommended environment
§ Temperature : room temperature 16°C to 32°C (61°F to 90°F)
§ Humidity : 50% to 65% non-condensation
o Variation rate
§ Temperature : 2°C per hour
§ Humidity : 5% per hour
o Storage environment
§ Temperature : 0°C to 50°C (32°F to 122°F)
q Please protect your cutter from moisture, dust, draughts and direct sunlight. It is best to keep
your machine away from open windows and air-conditioners.
q See to it that there is an adequate space around the cutter so that ventilation is not obstructed.
q Avoid unnecessary vibrations and set up your cutter on a level surface.
q When selecting a place for your cutter, leave at least 90 cm in front and 90 cm at the rear.
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1.3. Function keys.
Using the control panel, you can access different modes and alter several settings, in order to fine-tune the
cutter to match all your needs.
1)
JOG – keys
: Keys for manual movement of the tool head.
2)
ON-LINE
: Key to switch between OFF-LINE and ON-LINE mode.
3)
ORIGIN
: When this key is pressed, a new origin is set at the present location of
the tool head. Using the ORIGIN key, you can also activate the
alignment function.
4)
PAGE
: Performs media pre-feed cycle and gives access to the replot / copy
function and starts the automatic sheet-off function.
5)
ENTER
: To confirm changes and accept settings. The enter key, marked with a
blue dot, also gives access to special functions indicated by the blue text
on the control panel.
6)
MENU Selection Keys
: To select the parameter you want to alter.
7)
Value + & - Keys
: To change a parameter’s value or setting.
8)
LED indicator for plotter parameters and tool selection indication.
9)
LED bar for value indicators, error messages and function confirmation.
10)
ONLINE-LED indicator
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2. SYSTEM BLOCK DIAGRAM.
2.1. Block diagram SC-series (1st version).
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2.2. Block diagram SC-series (2nd version).
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2.3. Block diagram SC-550 (1st version).
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2.4. Block diagram SC-550 (2nd version).
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3. INTERFACES.
3.1. Serial interface RS-323C (standard).
1) Baud rate (software selectable).
- 19200 bps
- 9600 bps
- 4800 bps
- 2400 bps
- 1200 bps
2) Data length (software selectable).
- 7 bits
- 8 bits
3) Stop bits (software selectable).
- 1 bit
- 2 bits
4) Parity (software selectable).
- Odd
- Even
- None
5) Error detection.
- Parity error
- Framing error
- Overrun error
6) External connector.
- DB-25S (equivalent)
7) RS-232C driver / receiver IC.
- driver : 75188 (TI, ± 12V power supply)
- receiver : 75189A
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3.1.1. RS-232C pin configuration.
PIN #
SIGNAL Abbr. Signal direction
1 Frame ground FG 2 Transmit data TXD OUT
3 Receive date RXD IN
4 Request to send RTS OUT
5 Clear to send CTS IN
6 Data set ready DSR IN
7 Signal ground SG 8 Carrier detect CD IN
9 ® 14
Not used
15 Transmitter signal
Element timing
ST IN
16 Not used
17 Receiver signal
Element timing
RT IN
18 Data terminal ready DTR OUT
19 Not used
20 Data terminal ready DTR OUT
21 ® 25
Not used
3.1.2. Serial cable configuration.
1) 9 pins ® 25 pins connector.
2) 25 pins ® 25 pins connector.
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3.2. Centronics interface (Standard).
- Uni-directional (Receiving only)
- Data length : 8 bit parallel
- Signal level : TTL
- Transmission distance : maximum 5 meters
3.2.1. Centronics interface Pin configuration.
PIN #
SIGNAL SIGNAL Signal direction
1 Strobe (*) Strobe input In
2 ® 9 DATA 1 ® 8
Parallel Data input In
10 ACK (*) Acknowledge Output Out
11 BUSY Busy Out
12 PAPER END Paper end Out
13 SELECTED Selected Out
16 SG Signal ground 17 FG Frame ground 18 HIGH High level Out
19 ® 30
SG Signal ground 31 - Not used 32 FAULT Error Out
33 SG Signal ground -
NOTE : - Other pins are put in NC (no contact) status.
- Asterix (*) indicates negative logic.
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4. TROUBLESHOOTING.
When errors occurring during cutting or after powering on the machine, some LED code may appear on the
LED bar to inform you about the kind of error.
In general 2 different types of error messages may occur :
4.1. Recoverable errors.
Recoverable errors can be recognized by some flashing LED’s on the LED bar. Sometimes the machine
continue to work while LED’s are flashing. Sometimes it stops but continue again after correction of the
error.
Recoverable errors are mostly related to communication problems or user mistakes.
4.1.1. RECOVERABLE SYSTEM ERRORS
ERROR CODE
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
IMPOSSIBLE AUTOON-LINE RECOG (S02)
G. LANGUAGE NOT
CORRESPONDING (S03)
MEDIA DETECT ERROR (S05)
ROLL MEDIA END (S06)
CANNOT AUTO-CONNECT (S07)
AUTO CUT ERROR (S08)
CHANGE MEDIA (S28)
KANJI ROM SUM ERROR (S29)
POSSIBLE CAUSE & SUGGESTED ACTION
S02 Communication difficulties – Check cables.
S03 Select other graphics language. (Chapter 3 - Language Settings )
S05 Media detection impossible.
Too much or too little light, incorrect pressure roll position.
S06 Load a new sheet or roll.
S07 Communication difficulties – Check cables.
S08 Error during auto-sheet-off sequence.
Check media and auto-cut knife.
S28 Change or reload media.
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4.1.2. COMMUNICATION ERRORS
Communication errors are caused by a problem in the communication between the cutter and the host
computer. They can be caused by errors related to the communication conditions, errors due to a defective
handshake or command format errors in the ESCAPE sequences.
ERROR CODE
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
ERROR ON-LINE FRAME (C01)
ERROR ON-LINE OVERRUN (C02)
ERROR ON-LINE PARITY (C03)
ERROR BIAS VALUE (C04)
ERROR SUM CHECK (C05)
ERROR DATA BLOCK (C06)
FEW PARAMETER ESC (C07)
FEW PARAMETER ESC (C08)
COMMUNICATION BUSY (C09)
UNDEFINED ESC (C10)
ILLEGAL ESC (C11)
ERROR VALUE ESC (C12)
MANY PARAMETERS ESC (C13)
COMMUNICATION ERROR (C14)
BUFFER OVERFLOW (C15)
POSSIBLE CAUSE & SUGGESTED ACTION
C01 A framing error occurred. Check the communication settings. Chapter 3.
C02 Overrun error. Check the communication settings. Chapter 3.
C03 Parity error. Check the communication settings. Chapter 3.
C04 Bias is less than EOB code. Check the communication settings. Chapter 3.
C05 Check-sum difference cutter vs. host. Check the communication settings. Chapter 3.
C06 Data between bias and EOB too large. Check the communication settings. Chapter 3.
C07 Not enough ESC-parameters. Check the communication settings. Chapter 3.
C08 Not enough ESC-parameters. Check the communication settings. Chapter 3.
C09 Change the computer program to prevent the cutter from returning double data.
C10 Undefined ESCAPE sequence. Check the ESCAPE command setup.
C11 Illegal character used for MH-GL ESC-sequence. Check the ESCAPE command setup.
C12 Illegal character in ESC-sequence parameter. Check the ESCAPE command setup.
C13 Too many ESC-sequence parameters. Check the ESCAPE command setup.
C14 Communication error. Restart the cutter.
C15 Buffer overflow. Restart the cutter.
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4.1.3. LANGUAGE ERRORS
Language errors occur when command data entered from the host computer does not match the data
format of the command mode currently activated on the cutter’s side. The error can be caused by a
difference in command type or by a syntax error.
ERROR CODE
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
UNDEFINED XX (E01)
ERROR PARAMETER (E02)
ERROR VALUE (E03)
UNKNOWN CHAR (E05)
BUFFER OVERFLOW (E07)
POSSIBLE CAUSE & SUGGESTED ACTION
E01 Undefined MH-GL command. Verify computer and cutter language settings.
E02 Incorrect number of parameters was transmitted.
E03 Parameter out of range was transmitted. Verify computer and cutter language settings.
E05 Character unknown to MH-GL was sent. Verify computer and cutter language settings.
E07 Polygon and character buffer overflow. Verify computer and cutter language settings.
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4.2. Unrecoverable errors.
Unrecoverable errors can be recognized when all LED’s are flashing and the machine has stopped working.
After pressing the [ENTER] key VERY SHORT (just touch it ones) the error code appears on the LED bar
(NOT flashing).
To clear the error message, the machine needs to be powered OFF and ON again. (Wait ± 7 seconds
between power OFF/ON).
Refer to the following chart for error code explanation :
4.2.1. Processor errors.
ERROR CODE
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Error Code 0 X
Watch dog time out X
Bus trap error X X
Address trap error X
Illegal instruction
(MC68020)
X X
Zero divide X X
General processor failure X X X
EPROM check-sum error X
Interrupt failure X X
1010 CPU failure X X X
1111 CPU failure X X X X
DRAM error X X X
SRAM error X X
Extended RAM error X X X X
EEPROM error X X X
EEPROM error X X
4.2.2. X – Y Servo errors.
ERROR CODE
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
OUT of SYNC X X X X
OUT of SYNC Y X X X
X POSITION timeout X X X X
Y POSITION timeout X
X Over current X X
Y Over current X X
X Encoder fail X X X
Y Encoder fail X X
X Overload X X X X
Y Overload X X X X X
Driver failure X X X X
Encoder failure X X X X X
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4.2.3. Cutting head errors.
ERROR CODE
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
POSITION
Timeout MC
X X X
OVER CURRENT
Moving Coil
X X X X
A/D failure
Moving Coil
X X X X
4.2.4. Other errors.
ERROR CODE
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
ILLEGAL Mainboard rev. X X X X X
ILLEGAL Mainboard TYPE X X X
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4.3. Problem symptoms and suggested actions.
4.3.1. Processor errors.
PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
- Error code 0
- Watch dog timeout
- Bus trap error
- Address trap error
- Illegal instruction (MC68020)
- Zero divide
- General processor failure
- Interrupt failure
- 1010 CPU failure
- 1111 CPU failure
- DRAM error
- SRAM error
- Poor connection between
main and terminal board.
- Bad EPROM’s
- Bad EEPROM
- Mainboard failure
- Check cable and connection
- Check pins and position of
EPROM and EEPROM.
Reinstall EPROM and
EEPROM.
- Replace Mainboard
- EPROM checksum error
- EPROM data is changed
- Replace EPROM set
- EEPROM error
- EEPROM data is changed
- Perform INIT 1
- Perform INIT 2
- Replace EEPROM
-
- Extended RAM error
- Poor extended RAM
connection
- Bad extended RAM
-
- Check connection
- Replace extended RAM
4.3.2. X- Y Servo errors.
PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
- OUT of SYNC X
- OUT of SYNC Y
- X position Timeout
- Y position Timeout
- X over current
- Y over current
- X overload
- Y overload
- X Encoder fail
- Y Encoder fail
- Encoder failure
- Driver failure
- Defective motor / encoder
- Loose drive pulley
- Failure in drive circuit
- Poor connection of motor/
encoder
- Too much friction in X or Y
axis
- Replace motor / encoder
- Fix pulley or replace motor /
encoder
- Replace main PC board
- Check cables and
connections
- Check X and Y movement
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4.3.3. Cutting head errors.
PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
- Position Timeout Moving Coil
(MC)
- OVER CURRENT Moving Coil
(MC)
- A/D failure Moving Coil (MC)
- Nose piece of knife holder
(XPC model) not fixed
- Blade is too far out
- Sheet off mechanism blocks
UP/DOWN movement (Not on
SC-550)
- Head flex cable bad or poor
connection
- Bad cutting head
- Failure in drive circuit
-
- Check knife holder
- Check blade depth
- Check sheet off mechanism
(Not in SC-550)
- Check connections or replace
head flex cable
- Replace cutting head
- Replace main PC board
4.3.4. Other errors.
PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
System is dead :
- No movement
- No LED’s lighted
- Power failure
- Defective Power supply (P/S)
- Defective Mainboard
- Check power cord
- Check wall outlet
- Check fuse on P/S
- Check LEDs on P/S
- Replace P/S
- Replace mainboard
Some LED’s lighted but no
movement of the motors and
cutting head.
- Defective EPROM’s
- Defective EEPROM
- Defective mainboard
- Poor connection between
main and terminal board
- Replace EPROM’s
- Replace EEPROM
- Replace mainboard
- Check cable connections
- Plotter powers on, head
UP/DOWN initialises but no
movement of motors.
- Transparent cover is not
closed
- Transparent cover switch
defective
- Close the cover
- Check or replace cover switch
Plotter does not shuffle media. - Pressure roller lever is not
DOWN
- Bad lever sensor
- Both media sensors are not
covered
- Media sensors dusty or bad
- Lower the lever
- Check the lever sensor
- Load media properly
- Clean or replace media
sensors
Illegal mainboard revision (LED
code on LED bar)
- Mainboard version is not
compatible
- Use correct mainboard
Wrong mainboard (LED code on
LED bar)
- Mainboard from SC-550 is
used in SC-series or vice
versa
- Use correct mainboard
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PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
Plotter has shuffled media but
does not respond to data
- Plotter is OFF-line
- Interface cable not connected
or bad
- Wrong plotter driver
- Wrong interface parameters
- Bad interface port
- Put plotter in ON-line
- Check interface cable
- Check plotter driver
- Check interface parameters
- Check port or replace main
PC board
Plotter is responding to data, but
error messages appear on the
LED bar (See User’s guide)
- Wrong interface parameters
- Wrong cable configuration
- Check interface parameters
(See User’s Guide)
- Check interface cable
Plotter is cutting but quality is not
acceptable
- Blade worn or broken
- Blade is not turning smooth
- Offset is not correct
- Blade is too far out
- Cutting force is too high
- Cutting mat worn
- Wrong plotter driver
- Play on cutting head
- Drive belt tension not correct
- X or Y motor defective
- Replace blade
- Check or replace knife holder
- Perform offset procedure (See
User’s Guide)
- Adjust knife depth
- Reduce cutting force
- Replace cutting mat
- Select correct plotter driver
- Check or replace cutting head
- Check or adjust belt tensions
- Replace X or Y motor
Media tracking problems
Media skews during cutting or
loading..
- Media is not loaded straight in
the machine
- Grid rollers dirty
- Grid rollers or pressure rollers
worn
- Speed or acceleration too
high
- Pressure roller pressure not
correct
- Media backing is very slippery
(Teflon based)
- Load media as described in
the User’s Guide
- Clean grid rollers
- Replace grid rollers or
pressure rollers
- Decrease
o Cutting speed
o Pen/UP speed
o Cutting acceleration
o Pen/UP acceleration
- Adjust pressure roller
pressure
- Change media type or
decrease speed acceleration
Maintenance Manual – SC Cutting Plotter
29 AP-74030, Rev / B
5. SPECIALIZED DIAGNOSTICS.
5.1. Diagnostics overview.
Two different types of specialized diagnostics are available on the SC-series cutting plotter :
Þ Diagnostics with normal SC-keyboard
Þ Diagnostics with optional keyboard with LCD display. (Keyboard from XP-C cutting
plotter).
The most important adjustments can be performed with the standard SC-series keyboard. However to take
advantage of all the features of the complete diagnostics menu, an optional XP-C keyboard (Partnumber EY6200-50010) is required.
Caution :
The specialized diagnostics built into the SC-series cutting plotters are designed only for
maintenance purposes and may only be used by authorized MUTOH technicians.
Entering the Diagnostics Menu’s by non qualified people may result in damage of the
machine.
5.1.1. Diagnostics with SC-keyboard.
The following diagnostics are available with normal SC-keyboard :
q Initialising EEPROM
Ø INIT 1
Ø INIT 2
q Aging
Ø X axis
Ø Y axis
Ø X & Y axes simultaneously
q Drawing for Quality check
q Measuring the CUTTING MAT height
q Adjusting the SHEET OFF system (Not on SC-550)
q Backup plot User parameters
q Backup plot Adjustment values
Maintenance Manual – SC Cutting Plotter
30 AP-74030, Rev / B
5.1.2. Diagnostics with optional LCD keyboard.
By using the optional keyboard with LCD, you can access all the existing diagnostics. Ten diagnostics
pages as follows :
DIAGNOST 1
DIAGNOST 2
DIAGNOST 3
DIAGNOST 4
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