7.UNITS B-70315EN/02
- 214 -
7.13 SHUTTER UNIT
7.13.1 Replacement Method
7.13.1.1 Replacing the shutter unit
(1) Turn off the power to the CNC, then turn off the main circuit
breaker and power supply for the laser oscillator.
(2) Disconnect the cables from intermediate PCB B.
(3) Remove the bolts which secure the unit, then remove the unit.
(4) Mount a new unit by reversing steps (2) and (3).
(5) After the shutter unit is replaced, the CO
2
laser beam and guide
laser beam may be misaligned with each other. In such a case,
align the CO
2
laser beam and guide laser beam with each other
according to Section 8.7.
Fig.7.13 External view of shutter unit
7.13.1.2 Replacing the shutter mirror
Replace the shutter mirror as follows. Be careful not to leave
fingerprints on the shutter mirror.
(1) Remove the thermal switch from the heat sink.
(2) Remove the two bolts from the reflective surface side of the
shutter mirror. Then, you can remove the shutter mirror with the
heat sink to which the shutter mirror is attached.
(3) Apply a minute amount of thermal compound (Ryosan Company
910-50) to the rear of a new shutter mirror, then mount the new
shutter mirror by reversing steps (1) to (2).