Particular Color Is Not Printed At All; Shifting In Printing/Color Shifting - Roland VersaCAMM VP-540 Service Notes

6-2 PARTICULAR COLOR IS NOT PRINTED AT ALL

NO CHECKING POINT
Ink Cartridge is almost
1
empty
Error of Ink Empty
2
detection
3
Bad contact/Broken cable Refix / Replace the cable
4
Defect of Cap Top
5
Air bubbles in Ink line
6
Broken Ink Tube
Broken Fuse on the Main
7
Board
8
Broken Main Board
9
Broken Head

6-3 SHIFTING IN PRINTING/COLOR SHIFTING

NO CHECKING POINT
1
The media is set tilted
Encoder Scale is
2
dirty/broken
Encoder Module is
3
dirty/broken
4 Head is out of adjustment Head Alignment
Bad contact of Flexible
5
cable
ACTION
Check remaining Ink /
User's Manual
Replace the Ink Cartridge
Replace the ink cartridge/
sensor
[3-3 CAP TOP
Cap Top Replacement
REPLACEMENT]
Powerful Cleaning/
Remove air bubbles by
an syringe
Eliminate the looseness
of the tube joint
[3-8 INK TUBE
Ink Tube Replacement
REPLACEMENT]
Replace the Fuse on the
Main Board
[3-9 BOARDS
Main Board Replacement
REPLACEMENT]
[3-1 HEAD
Head Replacement
REPLACEMENT]
ACTION
Set the media correctly User's Manual
Clean or replace Encoder [3-12 ENCODER SCALE
Scale REPLACEMENT]
Clean or replace Encoder
Module
[4-4 HEAD ALIGNMENT]
Refix / Replace the
Flexible cable
REFERENCE
When the machine keeps printing with ink cartridge almost
empty, the negative pressure delivered in the ink tube causes
the improper ink supplying and the head cannot fire the ink
correctly.
If the cartridge tab does not stick out when it is empty, it
cannot detect it empty and printing is continued without firing
ink. Also, if the sensor is not working, Ink Empty cannot be
detected even if the cartridge tab sticks out.
If there is a bad communication between the head and the
Main Board, the signal for driving head is not sent properly
and results in not printing properly. If the Flexible cable is
fixed slanted, it may cause the bad electrical contact or short-
circuit. And, the cable which has been conneted and
disconnected several times may have a damaged terminal.
If the Head is not capped correctly, the Head dries and it may
cause the Head nozzle clogging.
When air bubbles come inside the Ink line, the head may not
fire the Ink temporarily. Air bubbles tend to go into the Ink line
if Ink Cartridge is installed and uninstalled so many times.
The air bubbles inside the lines can be removed by
performing the powerful cleaning or using a syringe.
If the tube has air due to the looseness of the tube joint, fix
the joint and remove the air.
The F1 Fuses are for M and Y, and the F2 Fuses are for K
and C. If the M and Y Heads do not fire any Ink at all, the F1
Fuse may be defective. If the K and C Heads do not, the F2
Fuse may be defective.
There might be a problem with the other devices on the Main
Board if the Fuses are not defective.
REFERENCE
If media is not set straight, it comes loose on the Platen and
it wrinkles, and results in shifting. Set the media straight
referring to the User's Manual.
When Encoder Scale is not read correctly, printing position
may shift.
When Encoder Scale is not read correctly, printing position
may shift.
If the Heads are not aligned or Horizontal adjustment is not
performed properly, the color shifting occurs.
If the Flexible cable is not fixed correctly, the Head moves
incorrectly and results in the shifting in printing.
6-2
OUTLINE
OUTLINE