WF-2540 / WF-2530 / WF-2520 / WF-2510 / WF-2010 series Revision B
Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 43
Confidential
PIS Board Assy / Star Wheel Holder Assy
PIS Shield Plate B and CR Motor are secured to the Main Frame together.
If the internal thread of the screw hole on the Star Wheel Holder Assy has been damaged, a fatal error may occur because the PIS Board Assy is
detached due to vibrations during transportation or the like. When securing the PIS Board Assy with the screw, first turn the screw CCW and
align the thread of the screw and the internal thread of the screw hole on the Star Wheel Holder Assy, then tighten the screw securely.
Do not touch the sensor of the PIS Board Assy.
Do not use air-blowing when cleaning the PIS Board Assy. If the board is dirty with ink or similar, wipe it off using a waste cloth.
When installing the PIS Board Assy / Star Wheel Holder Assy, follow the procedure below.
1. Insert the section A of the PIS Shield Plate B into the hole of the Frame Base.
2. Secure the PIS Shield Plate B using the screw together with the CR Motor and Main Frame.
3. Connect the PIS FFC to the connector on the PIS Board Assy, and then align the dowels (x2) of the PIS Board Assy with the positioning hole and
cutout of the Star Wheel Holder Assy.
4. Secure the PIS Board Assy with the screw while pressing it to the rear of the printer and supporting the Star Wheel Holder Assy with your hand
so as to prevent it from warping.
5. Route the PIS FFC and connect it to the Main Board. (p 50)
6. Align the positioning holes (x2) on the PIS Shield Plate A with the dowels (x2) on the Star Wheel Holder Assy, and engage the hole on the PIS
Shield Plate A to the hook on the Star Wheel Holder Assy, then attach the PIS Shield Plate A to the Star Wheel Holder Assy.
7. After confirming the sensor of the PIS Board Assy is set out from the hole on the PIS Shield Plate A, secure the PIS Shield Plate A/B and Star
Wheel Holder Assy together with the screw.
Secure PIS Shield Plate and CR
Motor together with Main Frame.
Step 2
PIS FFC
Turn it
CCW.
Step 4
Section A
PIS Shield Plate B
C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf·cm)
C.P SCREW 3x4 F/ZN-3C (4 ± 1 kgf·cm)
C.B.P-TITE 2x8 F/ZN-3C (2.5 kgf·cm)
Step 3
Star Wheel Holder Assy
Sensor
PIS Board AssyDowel and cutout
Step 1
Star Wheel Holder Assy
PIS Shield Plate A
PIS Shield Plate B
Step 6, 7
Hole
Positioning hole and dowel
Hole and hook
Reflector PIS Assy
Do not remove the Reflector PIS Assy from the Reflector PIS
Holder.
When handling the Reflector PIS Assy, be careful not to
contaminate or damage the Reflector PIS.
When attaching the Reflector PIS Assy to the CR Unit, confirm the
Reflector PIS Holder cannot be seen through the hole on the
bottom of the CR Unit. Otherwise, the Reflector PIS Assy has not
been installed correctly, so make sure to install the Reflector PIS
Assy properly again.
Reflector PIS
Reflector
PIS Holder
Bottom
Reflector PIS
Reflector PIS Holder
Reflector PIS Assy
CR Unit
CR Scale
Attach the CR Scale to the hook on the left of the Main Frame
with the black triangle mark upward.
Make sure to put the CR Scale through the slit of the CR
Encoder Sensor.
Slit of CR Encoder Sensor
CR Unit
CR Scale Cover Frame
When installing the CR Scale Cover Frame, install the CR Scale Cover Frame to the Main Frame following the standard below and tighten the screw
in the procedure below.
80-digit side
• Align the protrusions of the Main Frame with the cutout of the CR Scale Cover Frame.
• Insert the rib of the CR Scale Cover Frame to the hole of the Main Frame.
0-digit side
• Insert the rib of the CR Scale Cover Frame to the hole of the Main Frame.
CR Scale Cover Frame
Cutout
Rib
Rib
80-digit side
Align cutout.
Inset rib.
Main Frame CR Scale Cover Frame
12
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