MSSC QM1610 User manual

QM1610
Technical Manual
P/N 462377-01
Revision: AD, May 2013

© 2013. Used with permission.
MSSC, LLC
926 McDonough Lake Road, Phone: [phone]
Collinsville, Phone: [phone]
IL 62234 USA Fax: [phone]
www.msscllc.com

Rev AD i
Customer Support and Training
Contact Information
If you have any questions or need assistance, please contact MSSC, LLC at 
1-800-854-8905 (for all customers within the United States). Outside the
U.S., customers should contact their MSSC, LLC distributor or subsidiary
for assistance.
MSSC, LLC
926 McDonough Lake Road
Collinsville, IL 62234 U.S.A.
Phone: [phone]
Fax: [phone]
Web: www.msscllc.com

Rev AD 1
Table of Contents
Customer Support and Training
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Chapter 1 — Introduction
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
Chapter 2 — Maintenance
Startup Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Shutdown Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Chapter 3 — Troubleshooting
Problems, Causes and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
Chapter 4 — Main Parts
Standard QM1610 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
Printhead Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2
Controller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3
Chapter 5 — Servicing Procedures
Preparing the QM1610 for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
Special Notes for Reassembling the QM1610 Printhead . . . . . . . . . . 5–1
Backflushing a Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
Backflushing a Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3
Replacing the Nozzle Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4
Removing the Nozzle Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4
Installing the New Nozzle Block . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4
Optional 20 mm, 32 mm and 48 mm Nozzle Blocks . . . . . . . . . . . . . . 5–5
Replacing a Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6
Removing the Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6
Installing the New Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6
Replacing the Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7
Removing the Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7
Installing the New Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7
Replacing the Printhead PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–8
Removing the Printhead PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–8
Installing the New Printhead PCBA . . . . . . . . . . . . . . . . . . . . . . . . 5–9
Replacing the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–9
Removing the Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–9

2 Rev AD
MSSC QM1610 Technical Manual
Installing the New Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10
Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5–10
Removing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5–10
Installing the New Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5–11
Replacing the Controller PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5–11
Removing the Controller PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11
Installing the New Controller PCBA . . . . . . . . . . . . . . . . . . . . . . . 5–12
Chapter 6 — Illustrated Parts List
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6–1
QM1610 Standard Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2
QM1610 Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6–4
QM1610 Controller Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6–6
Keypad in Different Languages . . . . . . . . . . . . . . . . . . . . . . . . . . . .6–7
PCB Board Assembly with Different Languages. . . . . . . . . . . . . .6–7
Consumables and Other Components. . . . . . . . . . . . . . . . . . . . . . . . . .6–8
QM1610 Owner’s Manual in Different Languages . . . . . . . . . . . . 6–8

Rev AD 1-1
1
Introduction
This QM1610 Technical Manual provides you with complete maintenance,
troubleshooting and servicing information for the QM1610 Ink Jet Printer.
It also contains a replacement parts list.
The QM1610 will support porous ink applications.
Caution
EQUIPMENT DAMAGE. To avoid serious injury or damage to the
equipment, perform procedures in this manual only if you are a
qualified technician.
Caution
For continued protection against fire, replace F1 with the same type
and fuse rating.
Fuse Rating: 250 V, 3 A Fast Acting
Dimensions: 5 mm x 20 mm

1-2 Specifications Rev AD
MSSC QM1610 Technical Manual
Specifications
Figure 1-1: QM1610 Dimensions
161.6 mm
(6.36 inches)
(8.46 inches)
215.1 mm
442.2 mm
(17.41 inches)
75.3 mm
(2.96 inches)
115.9 mm
(4.56 inches)
(11.94 inches)
303.4 mm
388 mm
113.5 mm
(4.46 inches)
(22.94 inches)
582.7 mm
232.1 mm
(9.13 inches)
(15.27 inches)

Rev AD Startup Procedure 2-1
2
Maintenance
Startup Procedure
At the beginning of each shift, perform the following tasks:
1With the spray cap on the solvent bottle, spray the nozzles with
solvent. In harsh environments, you may need to spray the nozzles
more often than once per shift.
2Purge the printhead.
3Check the ink level in the bottle; install a new bottle if necessary. In
harsh environments, or if print quality declines, replace the ink bottle
with solvent and purge solvent through the unit.
Shutdown Procedure
If you are shutting down a porous unit for less than two weeks, simply
turn off the controller. You do not need to purge the printheads with ink
or solvent. Also, do not remove any ink that may have caked on the nozzle
block. This will keep contaminants from entering the nozzles.
When you restart the unit, follow the daily maintenance procedures on
“Startup Procedure” on page 2-1.
If you are shutting down a porous unit for more than two weeks purge the
printheads with porous solvent. Leave the solvent in the ink lines until
you restart the unit.

Rev AD Problems, Causes and Solutions 3-1
3
Troubleshooting
Problems, Causes and Solutions
Problem Possible Cause Solution
Row of keys fails to
work. Controller PCBA is defective. Replace the Controller PCBA. (refer to “Replacing the Controller PCBA” on
page 5-11.)
Keypad is bad. Replace the Keypad
The green light is
on, but the unit will
not print.
Cable connection loose. Reseat the cable connector. Unit must be
powered down when connections are being
made.
Ink is out. Replace ink bottle
The unit prints
intermittently. Cable connection loose. Reseat the cable connector.
The unit comes on
and the print light is
constantly orange.
Printhead PCBA defective. Replace the printhead PCBA. (refer to
“Replacing the Printhead PCBA” on
page 5-8.)
Unit locked up. Unplug the power supply from the unit, then
plug it back in.
The machine
resets itself. Valve shorted out. Replace the defective valve. (refer to “Replacing a Valve” on page 5-6.)
The unit will purge
but not print. Cable connection loose. Reseat the cable connector.
Table 3-1: Problems, Causes and Solutions

3-2 Problems, Causes and Solutions Rev AD
MSSC QM1610 Technical Manual
A dot or dots
missing. Unit ran out of ink. Replace the ink bottle.
Nozzle clogged 1. Spray the nozzle block with solvent.
2. Backflush the nozzle. (refer to
“Backflushing a Nozzle” on page 5-2.)
3. Replace nozzle block. (refer to
“Replacing the Nozzle Block” on
page 5-4.)
Tube and jewel assembly in
the nozzle block cracked. Replace the nozzle block. (refer to “Replacing the Nozzle Block” on page 5-4.)
Worn valve. Increase dot size to temporarily adjust for
worn valve.
Valve became loose from the
Printhead PCBA. Reseat the valve on the Printhead PCBA.
Valve is defective. Replace the valve. (refer to “Replacing a
Valve” on page 5-6.)
Ink line became loose. Reattach the ink line.
Cable connection loose. Reseat the cable connector.
Oneormorevalves
fail to work,
resulting in missing
dots.
Cable from the controller to
the printhead touched the
PCBA causing a short.
Secure the cable from the controller to the
printhead with a fixed mounting.
Valve is defective. Replace the valve. (refer to “Replacing a
Valve” on page 5-6.)
Printhead PCBA is defective. Replace the Printhead PCBA. (refer to
“Replacing the Printhead PCBA” on
page 5-8.)
The dots are
splattering on the
print sample.
Printhead too far away from
the product. Position the printhead as close as possible to the product without rubbing against it and
no further than 0.24" (6 mm) away.
Note: Avoid contact between the printhead
and the product as this may cause print
quality to suffer.
Air in system. Purge unit until air is removed.
No power. Unit is not properly plugged
in. Plug unit into an appropriate power source.
Ink is leaking from
the regulator. Regulator is cracked or defective. Replace the regulator. (refer to “Replacing the Regulator” on page 5-7.)
Problem Possible Cause Solution
Table 3-1: Problems, Causes and Solutions (Continued)

Rev AD Problems, Causes and Solutions 3-3
MSSC QM1610 Technical Manual
The bottle will not
engage when
replacing the
bottle.
Regulator is not properly
seated in the saddle of the
printhead base.
Reseat the regulator in the printhead base.
Regulator is cracked. Replace the regulator. (refer to “Replacing
the Regulator” on page 5-7.)
Display screen is
blank or garbled. Display is defective. Replace the display. (refer to “Replacing the Display” on page 5-9.)
Message prints
backwards or is too
long.
One of the two photocells is
dirty. 1. Clean the photocells. 2. Manually set the conveyor direction,
eliminating the need for two photocells.
Refer the User‘s manual for instructions
on setting the conveyor direction.
Printhead PCBA is defective. Replace the printhead PCBA.
Keypad is not
responding. Contacts on the PC board are dirty. Clean the contacts.
Contacts on the back of the
keypad are dirty. Clean the contacts.
Problem Possible Cause Solution
Table 3-1: Problems, Causes and Solutions (Continued)

Rev AD Standard QM1610 Assembly 4-1
4
Main Parts
Standard QM1610 Assembly
Figure 4-1: Standard QM1610 Assembly
1. Controller Assembly
2. Controller Mounting Frame
3. Power Supply
4. Bracket Assembly
5. Mounting Tab
6. Printhead Assembly

4-2 Printhead Assembly Rev AD
MSSC QM1610 Technical Manual
Printhead Assembly
1
3
2
4
5
6
7
8
9
Figure 4-2: Standard Printhead Assembly
1. Printhead Top Cover
2. PCB Assembly
3. Cable Assembly
4. Valve
5. Printhead Bottom Cover
6. Regulator
7.Tubing (Manifold to Valve)
8. Nozzle Block
9. Supporting pin

MSSC QM1610 Technical Manual
Rev AD Controller Assembly 4-3
Controller Assembly
Figure 4-3: Controller Assembly
1. Controller Top Cover
2. Rubber Keypad
3. Controller PCBA
4. Controller Bottom Cover
5. Cable Assembly
6. Photoelectric Sensor Cover
7. LCD Assembly
8. LCD Cover

Rev AD Preparing the QM1610 for Servicing 5-1
5
Servicing Procedures
Preparing the QM1610 for Servicing
Before beginning work on the QM1610, follow these steps. Failure to
follow these steps may result in serious injury or damage to the unit.
To begin servicing the QM1610:
1Remove the ink bottle.
2Cover the front of the printhead with an absorbent cloth and purge
the printhead to remove any ink from the system.
3Remove the QM1610 and power supply to a well-lit, static-free
workbench.
Special Notes for Reassembling the QM1610
Printhead
Make sure the regulator is properly seated in the saddle of the printhead
base to allow proper connection of ink bottles. Also ensure that the valve
supporting pins are installed properly to prevent valves unseating from
the valve board.
Finally, make sure that valves are properly oriented and seated in the
PCB, and that all wiring and tubing will not be kinked when the printhead
cover is replaced.

5-2 Backflushing a Nozzle Rev AD
MSSC QM1610 Technical Manual
Backflushing a Nozzle
1Prepare the QM1610 for servicing. (refer to “Preparing the QM1610
for Servicing” on page 5-1.)
2Remove the printhead bottom cover by removing the three screws
from the bottom of the printhead. With the unit flat on the workbench,
place your thumb on the regulator and press down lightly as you lift
up the Bottom half of the printhead.
Note: Hold the components in place with your finger if necessary. Make sure
the inner assembly remains in the printhead top cover. Also, avoid
unnecessary flexing of the inner tubing and connected cable to prevent
damaging the connections.
3From a print sample, locate the nozzle that needs backflushing.
4Disconnect the tubing connected between the valve and the nozzle
from the valve end only; allow it to hang free.
Caution
EQUIPMENT DAMAGE. Remaining ink pressure may cause ink to
shoot out of the tubing.
5Place a cloth at the open end of the tubing.
6Install the cleaner assembly nozzle (from the service kit) on a bottle of
solvent.
7Press the solvent bottle against the clogged nozzle and spray solvent
through it for several seconds.
8Reconnect the tubing to the valve.
9Replace printhead bottom cover, remount, and purge for several
minutes.

Rev AD Backflushing a Valve 5-3
MSSC QM1610 Technical Manual
Backflushing a Valve
1Prepare the QM1610 for servicing. (refer to “Preparing the QM1610
for Servicing” on page 5-1.)
2Remove the printhead bottom cover by removing the three screws
from the bottom of the printhead. With the unit flat on the workbench,
place your thumb on the regulator and press down lightly as you lift
up the Bottom half of the printhead.
Note: Hold the components in place with your finger if necessary. Make sure
the Inner assembly remains in the printhead top cover. Also, avoid
unnecessary flexing of the inner tubing and connected cable to prevent
damaging the connections.
3Locate the valve that needs backflushing. (Valves requiring
backflushing can be identified by a print sample or by drooling or
leaking ink.)
4Disconnect the tubing between the regulator and the valve from the
regulator.
Caution
EQUIPMENT DAMAGE. Remaining ink pressure may cause ink to
shoot out of the tubing.
5Remove the tubing between the valve and the nozzle from the valve.
6Install the cleaner assembly nozzle (from the service kit) on a bottle of
solvent.
7Install tubing (from the service kit) on the cleaner assembly nozzle.
8Connect the tubing from the cleaner assembly nozzle to the outlet
(center) port of the valve.
9Place an absorbent cloth around the open end of the other tubing
connected to the valve.
10 Plug in the power supply and purge. (Refer the User's Manual for
how to purge.)
Note: If the QM1610 is not purging, you will not be able to run solvent
through the valve.
11 Spray solvent through the valve for several seconds.
12 Disconnect the solvent bottle from the valve port.

5-4 Replacing the Nozzle Block Rev AD
MSSC QM1610 Technical Manual
13 Reconnect the tubing from the inlet (off-center) port of the valve to the
regulator; reconnect the tubing from the nozzle to the outlet (center)
port of the valve.
14 Replace the printhead bottom cover, remount, and purge for several
minutes.
Replacing the Nozzle Block
Removing the Nozzle Block
1Prepare your QM1610 for servicing. (refer to “Preparing the QM1610
for Servicing” on page 5-1.)
2Remove the printhead bottom cover (see Figure 4-2 on page 4-2) by
removing the three screws from the bottom of the printhead. With the
unit flat on the workbench, place your thumb on the regulator and
press down lightly as you lift up the bottom half of the printhead.
Note: Hold the components in place with your finger if necessary. Make sure
the inner assembly remains in the printhead top cover. Also, avoid
unnecessary flexing of the inner tubing and connected cable to prevent
damaging the connections.
3Carefully lift the controller mounting frame off the top half of the
printhead.
4Slide out the nozzle block.
Installing the New Nozzle Block
1Pull off the ink tubes one at a time. As you disconnect an ink tube
from the old nozzle block, connect it to the corresponding nozzle of
the replacement nozzle block. (refer to Figure 5-1 on page 5-5.)
2Slide the newly connected nozzle block into its slot in the printhead.
3Replace the printhead cover. Be careful not to pinch any of the wires
or tubing in the printhead.
4Install an ink bottle, plug the system in, and purge the QM1610 with
ink to remove any air introduced into the system.
Your unit is ready to return to normal operation.

Rev AD Optional 20 mm, 32 mm and 48 mm Nozzle Blocks 5-5
MSSC QM1610 Technical Manual
Optional 20 mm, 32 mm and 48 mm Nozzle Blocks
An optional 20 mm, 32 mm and 48 mm nozzle block is available for the
QM1610 printhead. If you wish to install a 20 mm, 32 mm or 48 mm nozzle
block, refer to the Chapter 6, “Illustrated Parts List” for ordering
information and follow the procedure “Installing the New Nozzle Block”
on page 5-4.
VALVE VALVE
Figure 5-1: Printhead PCBA to Nozzle Block Diagram
Connection rule: (1)----1 (2)---- 2...............(16)----16

5-6 Replacing a Valve Rev AD
MSSC QM1610 Technical Manual
Replacing a Valve
Removing the Valve
1Prepare your QM1610 for servicing. (refer to “Preparing the QM1610
for Servicing” on page 5-1.)
2Remove the printhead bottom cover by removing the three screws
from the bottom of the printhead. With the unit flat on the workbench,
place your thumb on the regulator and press down lightly as you lift
up the bottom half of the printhead.
Note: Hold the components in place with your finger if necessary. Make sure
the Inner assembly remains in the printhead top cover. Also, avoid
unnecessary flexing of the inner tubing and connected cable to prevent
damaging the connections.
3Locate the defective valve. (If a valve has shorted, it will usually be
locked open with ink leaking. A good valve has a resistance reading of
approximately 24 ohms.)
4Remove the valve supporting pins and tie wraps if necessary.
5If necessary move aside functioning valves to get to the defective
valve.
6Disconnect both pieces of tubing from the valve.
Caution
EQUIPMENT DAMAGE. Remaining ink pressure may cause ink to
shoot out of the tubing.
7Disconnect the old valve from the valve board.
Installing the New Valve
1Connect the tubing from the ink manifold to the intake (off-center)
port on the new valve.
2Connect the tubing from the nozzle to the outlet (center) port on the
new valve.
3Plug the new valve into the valve board.
4Replace the valve supporting pins.