MUTOH VJ-628D2 User manual

CONFIDENTIAL
MAINTENANCE
MANUAL
ERRATA
VJ-628D2
VJ628D2E-M-00a

CONFIDENTIAL
2
TOC
VJ628D2E-M-00a
1. Introduction ........................................................................................................................................... 3
2. Trobleshooting ...................................................................................................................................... 8
3. Parts Replacement .............................................................................................................................11
4. Adjustment ..........................................................................................................................................37
5. Self-diagnosis ......................................................................................................................................47
6. Maintenance mode 2 .........................................................................................................................66
7. Maintenance ........................................................................................................................................75
8. Maintenance part(s) list ....................................................................................................................83
9. Electric cable diagram .......................................................................................................................99
10. Tube diagram ..................................................................................................................................101
11. Self-diagnosis function diagram .................................................................................................106
12. Error message list ...........................................................................................................................109
13. FFC folding instruction ..................................................................................................................114
14. Exploded view .................................................................................................................................116

CONFIDENTIAL
VJ628D2E-M-00a
3
TOC
1. Introduction
1.1. About this manual ............................................................................................................................ 4
1.1.1. Purpose and target readers ...............................................................................................................4
1.1.2. Manual notation ..................................................................................................................................... 4
1.1.3. Firmware version covered by this document .............................................................................4
1.1.4. Establishment Date of This Document ......................................................................................... 4
1.2. Important notice ............................................................................................................................... 5
1.2.1. Purpose and target readers ...............................................................................................................5
1.3. Warning labels ................................................................................................................................... 6
1.4. Before starting maintenance .......................................................................................................... 7
1. Introduction

CONFIDENTIAL
VJ628D2E-M-00a
4
About this manual
1. Introduction
1.1. About this manual
NOTE
- This manual is a maintenance manual for the VJ-628D2 that mainly explains the di󱐯erences
from the VJ-628D.
=>maintenance manual for the VJ-628D (VJ-628) : VJ628-M-xx
* xx : revision number
1.1.1. Purpose and target readers
This manual explains preparations needed before maintaining and checking operations for
MUTOH Full Color Ink Jet Printer.
This manual is prepared for the maintenance personnel of this printer.
Before using this printer, fully understand the contents and directions in this manual.
1.1.2. Manual notation
The following symbols are used in this manual for easier understanding of the information.
WARNING
Must be followed carefully to avoid death or serious bodily injury.
CAUTION
Must be observed to avoid slight or moderate bodily injury or damage to your equipment.
NOTE
Contains important information and useful tips on the operation of the product.
TIP
Indicates useful tips for operating or understanding the equipment.
1.1.3. Firmware version covered by this document
Firmware version: 1.07
1.1.4. Establishment Date of This Document
This document was established on March 1, 2023.
TIP
index=> 1. Introduction

CONFIDENTIAL
VJ628D2E-M-00a
5
Important notice
1. Introduction
1.2. Important notice
1.2.1. Purpose and target readers
- MUTOH, ValueJet, VJ-628D2 are registered trademarks or product names of MUTOH
INDUSTRIES LTD.
- Windows 7, Windows 8, Windows 10, Windows 11 and MS-DOS are registered trademarks
or product names of Microsoft Corporation.
- Other company and product names may be registered trademarks or product names.
CAUTION
- No part of this product or publication may be reproduced, copied, or transmitted in
any form or by any means, except for personal use, without the permission of MUTOH
INDUSTRIES LTD.
- The product and the contents of this publication may be changed without prior notication.
- MUTOH INDUSTRIES LTD. has made the best e󱐯orts to keep this publication free from error,
but if you nd any uncertainties or misprints, please call us or the shop where you bought
this equipment.
- MUTOH INDUSTRIES LTD. shall not be liable for any damages or troubles resulting from the
use of this equipment or this manual.
TIP
index=> 1. Introduction

CONFIDENTIAL
VJ628D2E-M-00a
6
Warning labels
1. Introduction
1.3. Warning labels
This section explains the handling of warning label, pasting location and types.
Warning labels are attached to parts of the printer that need special caution.
Understand the locations and the descriptions of the danger associated with each label
before operating the printer.
WARNING
- Follow all instructions and warnings on this manual when installing, operating, or
maintaining the equipment.
NOTE
- All warning labels must be visually recognized.
If the text or illustrations cannot be seen clearly, clean or replace the label.
- When cleaning warning labels, use cloth with water or neutral detergent.
Do not use solvent or gasoline.
- If a warning label is damaged, lost, or cannot be recognized, replace the label.
Location and type of warning labels
=> Operation manual and Installation manual
TIP
index=> 1. Introduction

CONFIDENTIAL
VJ628D2E-M-00a
7
Before starting maintenance
1. Introduction
1.4. Before starting maintenance
Note the following points when performing the maintenance.
WARNING
- Read the installation manual and operation manual carefully before starting the operation.
Otherwise, you may be injured.
=> Installation manual
=> Operation manual
- Before starting part(s) replacement, always perform following operations.
- Turn OFF power.
- Remove Power plug from outlet.
Otherwise, you may su󱐯er electric shock or system circuit may be damaged.
- Remove any cable(s) connected to the printer.
Otherwise, the printer may be damaged.
CAUTION
- Components in printer can be disassembled only if instructed so in this manual.
Do not disassemble Frame components and/or other components that are not instructed.
- The printer has been assembled in MUTOH factory with extremely high precision up to
1/100mm.
If disassembled inappropriately, normal functionality may not be restored.
- Allow su󱐰cient space around the perimeter for maintenance work
- When removing covers to operate the product for maintenance work, be careful not to
injure yourself on the drive unit, etc
NOTE
- Perform necessary lubrication and bonding after restoration in accordance with Lubrication
/ Bonding of this manual.
- Pictures and illustrations are taken at development phase.
- Thus specication and procedure may not be up-to-date.
TIP
index=> 1. Introduction

CONFIDENTIAL
VJ628D2E-M-00a
8
TOC
2. Trobleshooting
2.1. Introduction ....................................................................................................................................... 9
2.2. Trouble without error message ....................................................................................................10
2. Trobleshooting

CONFIDENTIAL
VJ628D2E-M-00a
9
Introduction
2. Trobleshooting
2.1. Introduction
This chapter provides information on possible causes of machine errors/damage and recovery
actions.
Trouble Contents Reference
When the message is displayed Trouble with an error message
displayed on Operation panel when
the printer is malfunctioning.
=>2.2
When the message is not displayed Trouble without an error message
displayed on Operation panel even
when the printer is malfunctioning.
=>12.1
TIP
index=> 2. Trobleshooting

CONFIDENTIAL
VJ628D2E-M-00a
10
Trouble without error message
2. Trobleshooting
2.2. Trouble without error message
=>Refer to maintenance manual for VJ-628
TIP
index=> 2. Trobleshooting

CONFIDENTIAL
VJ628D2E-M-00a
11
TOC
3. Parts Replacement
3.1. Introduction .....................................................................................................................................12
3.2. Covers-remove/assemble ..............................................................................................................13
3.3. Carriage .............................................................................................................................................14
3.3.1. Print head ................................................................................................................................................15
3.4. Y rail....................................................................................................................................................18
3.5. Frame .................................................................................................................................................19
3.6. PF ........................................................................................................................................................20
3.7. Cable guide .......................................................................................................................................21
3.8. IH_R ....................................................................................................................................................22
3.9. IH_L ....................................................................................................................................................23
3.9.1. Circulation pump .................................................................................................................................24
3.10. Board box .......................................................................................................................................28
3.10.1. MAIN board..........................................................................................................................................29
3.11. Maintenance ..................................................................................................................................32
3.12. Cover ................................................................................................................................................33
3.13. Accessories .....................................................................................................................................34
3.14. FFC ....................................................................................................................................................35
3.15. Periodic replacement parts.........................................................................................................36
3. Parts Replacement

CONFIDENTIAL
VJ628D2E-M-00a
12
Introduction
3. Parts Replacement
NOTE
- Index by section
=> 3.2. Covers-remove/assemble
=> 3.3. Carriage
=> 3.4. Y rail
=> 3.5. Frame
=> 3.6. PF
=> 3.7. Cable guide
=> 3.8. IH_R
=> 3.9. IH_L
=> 3.10. Board box
=> 3.11. Maintenance
=> 3.12. Cover
=> 3.13. Accessories
=> 3.14. FFC
=> 3.15. Periodic replacement parts
TIP
index=> 3. Parts Replacement
3.1. Introduction
This chapter provides information on removal and replacement of service parts.
CAUTION
- Read the installation manual and operation manual carefully before starting the operation.
Otherwise, you may be injured.
=> Installation manual
=> Operation manual
- Before starting part(s) replacement, always perform following operations.
- Turn OFF power.
- Remove Power plug from outlet.
Otherwise, you may su󱐯er electric shock or system circuit may be damaged.
- Remove any cable(s) connected to the printer.
Otherwise, the printer may be damaged.
CAUTION
- Components in printer can be disassembled only if instructed so in this manual.
Do not disassemble Frame components and/or other components that are not instructed.
- The printer has been assembled in MUTOH factory with extremely high precision up to
1/100mm.
If disassembled inappropriately, normal functionality may not be restored.
- Allow su󱐰cient space around the perimeter for maintenance work
- When removing covers to operate the product for maintenance work, be careful not to
injure yourself on the drive unit, etc.
NOTE
- Perform necessary lubrication and bonding after restoration in accordance with Lubrication
/ Bonding of this manual.
- Pictures and illustrations are taken at development phase.
- Thus specication and procedure may not be up-to-date.

CONFIDENTIAL
VJ628D2E-M-00a
13
Covers-remove/assemble
3. Parts Replacement
3.2. Covers-remove/assemble
This section describes the procedures to remove and reinstall covers.
Followings describe the list of cover parts.
No. Contents Reference
1 Side Cover R =>Refer to maintenance manual for VJ-628
2 Side Cover L =>Refer to maintenance manual for VJ-628
3 Top Cover =>Refer to maintenance manual for VJ-628
2
1
3
TIP
index=> 3. Parts Replacement

CONFIDENTIAL
VJ628D2E-M-00a
14
Carriage
3. Parts Replacement
3.3. Carriage
NOTE
- As of March 1, 2023 (No.1471401)
This section describes how to replace the maintenance parts
The following table lists the maintenance parts.
No. Contents Reference
1 CR board =>Refer to maintenance manual for VJ-628
2 CR encoder =>Refer to maintenance manual for VJ-628
3 Cursor =>Refer to maintenance manual for VJ-628
4 Cutter holder =>Refer to maintenance manual for VJ-628
5 Cutter solenoid =>Refer to maintenance manual for VJ-628
6 P_EDGE sensor =>Refer to maintenance manual for VJ-628
7 Print head =>3.3.1
8 Roller arm =>Refer to maintenance manual for VJ-628
9 Valve head =>Refer to maintenance manual for VJ-628
List of other related procedure:
No. Contents Reference
1 Manual release of carriage lock =>Refer to maintenance manual for VJ-628
2 Valve head cleaning =>Refer to maintenance manual for VJ-628
3 Carriage cover - remove/assemble =>Refer to maintenance manual for VJ-628
4 CR board cover - remove/assemble =>Refer to maintenance manual for VJ-628
LEFT
FRONT
REAR
RIGHT
Bottom viewTop view
REAR
RIGHT
LEFT
FRONT
TIP
index=> 3. Parts Replacement

CONFIDENTIAL
VJ628D2E-M-00a
15
Carriage
3. Parts Replacement
3.3.1. Print head
A : Print head
A
● Tools, Jigs, and Maintenance Part(s)
Part(s) No. Name Reference
DH-40274 I9472 Print Head -
Generic item Phillips screwdriver No.2 -
Generic item Long-nose pliers -
Generic item Plastic bag -
NOTE
No Picture
DH-40274 A
x1
I9472 Print Head
Print head
A
NOTE
- The ink arrangement is as shown in the gure below.
K Y LmM
C WH WHLc
7-color setting
CAUTION
- Precautions when replacing the ink path
- Wear gloves.
Ink remains in tube(s).
- Place a waste cloth or waste media that can be dirty so that it does not drip from the tube
outlet to the outside of the product.
CAUTION
- Precautions for FFC installation / removal
- When replacing the board or connecting/disconnecting the FFC, disconnect the power
cable and leave it for a while before starting work.
- Working while power cable plugged in, there is a risk of damage to the board due to
residual charge and electric shock to the operator.
- Before inserting the FFC, check the condition of the FFC terminal.
(the terminal angle is not bent, the reinforcing plate is not removed)
- Insert and remove the FFC vertically with respect to the connector.
- Do not insert or remove the FCC diagonally to or from the connector.
- If you insert or remove the FCC at an angle, the terminals in the connector may be
damaged, short-circuited or broken, and the elements on the board may be damaged.
- Insert the FFC all the way into the connector.
- After inserting, check that the FFC and connector terminals are not laterally displaced and
that they are not inserted obliquely.

CONFIDENTIAL
VJ628D2E-M-00a
16
Carriage
3. Parts Replacement
3 Remove cover(s).
- Carriage cover
- CR board cover
=>Refer to maintenance manual for VJ-628
4 Remove ink tube.
- Turn head connector by 45 degree clockwise.
A : Valve head connector
B : Plastic bag
C : Print head
NOTE
- Mark all the valve head connector.
- Connector valve head must be placed in a plastic bag
so that the ink drip contaminate the system and its
environment during work.
C
A
B
5 Remove the print head.
A : Round head screw with split washer_M3x6 (x4)
B : Print head
Ax4
B
6 Remove head FFC.
A : Head FFC (x4)
B : Print head
B
A
● Procedure
1 Discharge ink.
2 Remove cover(s).
- Side cover R
3 Remove cover(s).
- Carriage cover
- CR board cover
4 Remove ink tube.
5 Remove the print head.
- Round head screw with split washer_M3x6 (x4)
6 Remove head FFC.
7 Remove head base.
8 Remove head cover.
9 Remove valve head.
10 Replace the print head.
11 Replace head rank label.
12 Install valve head.
13 Reverse the above procedure to reinstall the parts.
14 Enter head rank.
15 Check and adjust after replacing parts.
● Procedure(details)
1 Discharge ink.
- Self-diagnosis - [Check3 : Adjustment] - [Adj.14 : Ink Discharge]
NOTE
- Ink must be drained to prevent system/site pollution by ink dripping during work.
2 Remove cover(s).
- Side cover R
=> 3.2. Covers-remove/assemble

CONFIDENTIAL
VJ628D2E-M-00a
17
Carriage
3. Parts Replacement
11 Replace head rank label.
- Remove head rank label from new print head.
- Install it to head cover.
A : Head rank label
B : Head cover
C : Print head
A
C
A
B
12 Install valve head.
A : Valve head(x4)
B : Print head
NOTE
- Valve head(s) must face the same direction.
A
B
13 Reverse the above procedure to reinstall the parts.
14 Enter head rank.
- Self-diagnosis - [Check14 : HeadReplace]
NOTE
- After entering the head rank, the head lifetime counter is automatically initialized
and the menu moves to ink chargi ng process.
15 Check and adjust after replacing parts.
=> 4.2. Adjustment item
TIP
index=> 3. Parts Replacement
7 Remove head base.
A : Round head screw with split washer_M2.5x8 (x4)
B : Head base
C : Print head
Ax4
B
C
8 Remove head cover.
- - Pull out the head cover vertically to remove.
A : Head cover
B : Hook
C : Print head
NOTE
- If it is di󱐰cult to remove the head cover, release
protrusion of the head from the cover rst, then pull
up the cover.
C
A
B
B
9 Remove valve head.
A : Valve head (x4)
B : Long-nose pliers
C : Print head
CAUTION
- Pull out the valve head with long-nose pliers.
- Do not scratch or damage the transparent lm of
valve head.
A
B
C
10 Replace the print head.

CONFIDENTIAL
VJ628D2E-M-00a
18
Y rail
3. Parts Replacement
3.4. Y rail
NOTE
- As of March 1, 2023 (No.1386505)
This section describes how to replace the maintenance parts
The following table lists the maintenance parts.
No. Contents Reference
1 CR belt =>Refer to maintenance manual for VJ-628
2 CR motor =>Refer to maintenance manual for VJ-628
3 P_REAR sensor =>Refer to maintenance manual for VJ-628
4 Pressure roller =>Refer to maintenance manual for VJ-628
5 T fence =>Refer to maintenance manual for VJ-628
LEFT
FRONT
REAR
RIGHT
Bottom viewTop view
REAR
RIGHT
LEFT
FRONT
TIP
index=> 3. Parts Replacement

CONFIDENTIAL
VJ628D2E-M-00a
19
Frame
3. Parts Replacement
3.5. Frame
NOTE
- As of March 1, 2023 (No.1386708)
This section describes how to replace the maintenance parts
The following table lists the maintenance parts.
No. Contents Reference
1 Media holder =>Refer to maintenance manual for VJ-628
2 Scroller receiving roller =>Refer to maintenance manual for VJ-628
3 Vacuum fan =>Refer to maintenance manual for VJ-628
LEFT
FRONT
REAR
RIGHT
Bottom viewTop view
REAR
RIGHT
LEFT
FRONT
TIP
index=> 3. Parts Replacement

CONFIDENTIAL
VJ628D2E-M-00a
20
PF
3. Parts Replacement
3.6. PF
NOTE
- As of March 1, 2023 (No.1483300)
This section describes how to replace the maintenance parts
The following table lists the maintenance parts.
No. Contents Reference
1 PF encoder =>Refer to maintenance manual for VJ-628
2 PF encoder scale =>Refer to maintenance manual for VJ-628
3 PF motor =>Refer to maintenance manual for VJ-628
4 PF speed reduction belt =>Refer to maintenance manual for VJ-628
LEFT
FRONT
REAR
RIGHT
Bottom viewTop view
REAR
RIGHT
LEFT
FRONT
TIP
index=> 3. Parts Replacement