Roland VersaCamm SP-540V Service Notes page 120

Tighten the screws fixing the Head in the reverse order
10
when fixing with using the TORQUE DRIVER (ST-056).
Torque for tightening is 2kgf
Make sure not to tighten the screws too tightly.
Print the test pattern again.
11
If the result is NG, repeat 6 ~ 10 .
The shifting of lines should be within 1/2 dot.
cm (20cNm).
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4-23
4