Name: MUTOH RJ-900
Brand: MUTOH
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Technical Bulletin

tib 1006-001

RJ-900 Print Head Alignment

OVERVIEW

As with all printers produced by Mutoh, the head alignment steps on the RJ-900 and RJ-901 are quite

straightforward. These steps are common across the entire Mutoh product line although different names

may be used for each function from time to time.

This bulletin includes the relevant pages from the Mutoh service manual, along with corrections for

instructions that may be inaccurate or out of date.

MATERIALS NEEDED

• #2Philipsscrewdriver-forremovingcoverscrews

• 5xorgreaterpowerloupe

• Flashlight-asingleLEDunitsuchasaMiniMagliteispreferableduetoitsbrightness.Also,a

blueLEDlightmayhelpilluminatetheyellowalignmentpatterns,whichcanbeverydifcultto

see under normal lighting conditions.

• Atleast10to15feetofavailablepaperforprintingthealignmentpatterns.

PROCEDURE

1. StarttheprinterinSelfDiagnosticModebyholdingdowntheUP,DOWN,andRIGHTarrowkeysduring

initialization. Release the keys when the printer displays Check: Test.

2. PresstheRIGHTarrowkeytodisplayCheck:Adjustment.Makesurethatyouhavepaperloadedand

the lever is down before you press ENTER.

3. Using the menu tree shown on the following page as a guide, go through the steps in this order:

a) Nozzlecheck.Thisstepistoensurethattheheadisringproperly.

b) Slantcheck1.Inthisstep,youwillcomparetherst(black)andlast(yellow)channelsto

determineiftheheadisslanted.Thiscanbeadjustedthroughaleveronthesideofthe

head carriage.

c) Slantcheck2.Thispatterndetermineswhetherthereisaverticaladjustment(slant)to

the print head. This step is generally not necessary unless the head carriage has been

replaced or reinstalled.

d) Uni-directionalalignment.Thisadjuststheelectronictimingofeachofthe8channelson

the print head to each print mode (the print mode is a combination of head height and car-

riage speed).

e) Bi-directionalalignment.Thisisasingleadjustmentthatcompensatesforthealternating

directionsofcarriagetravelwhenprintingbi-directionally.Oneadjustmentmustbemade

for each print mode.

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MUTOH RJ-900 User Manual

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