Hitachi RAS-2-HVNP Service Manual page 344

10. Servicing
7 Pull up and remove the electrical box.
1. Electrical box cover.
2. Two screws.
  
Removing Display PCB
1 Remove the pipe cover following
2 Remove 1 fixing screw and remove the terminal cover.
3 Disconnect all the wiring connected to the display PCB.
4 Hold the upper part of 4 holders with long nose pliers and remove the display PCB.
1. Display PCB (PWB2).
2. Terminal cover.
3. Long nose pliers.
4. Display PCB.
N O T E
DO NOT touch electrical components on the PCB. Pay attention not to bend or apply much force onto PCB in order
to avoid PCB failure.
N O T E
1 To connect wiring at reassembling ensure that the terminal numbers and wiring mark band codes are matched.
Incorrect wiring may result in malfunction or damage of electrical components.
2 Different dip switch setting shall be applied for each model when the electrical box is replaced; See chapter 8
"Troubleshooting".
3 Pay attention not to clamp any wiring between plates or electrical components when closing electrical box
cover or front cover at reassembling.
330
SMGB0079 rev.0 - 01/2013
Removing pipe cover.
5. Holder.
1
2
3
4
5