Roland VersaCamm VS-640 Service Notes page 222

Turn on the Sub Power SW while pressing [
4
[ ] keys to enter the Service Mode.
Set up the PET-G on the machine.
Select [PRINT MENU]>[HEAD ADJUST]>[BIAS]>[TEST
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PRINT] and press [ENTER] key.
Test pattern is printed. The test pattern is different depending
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on the ink type.
The printed test pattern can be fed forward and back-
ward by [ ] and [
Head can be adjusted with the existing test pattern
by selecting [PRINT MENU]>[HEAD ADJUST]>[BIAS
2]. Adjustment can be performed by whichever of
test pattern. Because the machine does not feed the
media for [BIAS] test pattern, it is not affected by me-
dia feeding.
[BIAS ADJUSTMENT]
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Loosen the three screws fi xing the Head in the order of the
fi gure.
Loosen the screws fi xing the head for 1/2 turn.
If the screws are loosened too much, the adjustment
cannot be done correctly.
], [ ] and
] keys to be seen easily.
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MENU
MENU
SERVICE MENU
SERVICE MENU
PRINT MENU
PRINT MENU
HEAD ADJUST
HEAD ADJUST
BIAS
BIAS
TEST PRINT
< Firmware : ~ Ver.1.30 >
<CMYK> <CMYKLcLm>
< Firmware : Ver.1.30 ~ >
<CMYK> <CMYKLcLm>
1
2
+
[ ] [ ]
[ ] [ ]
[ ]
[ ]
<CMYKLcLmWMT>
<CMYKLcLmWMT>
3