Hitachi RAS-(4-12)HNP(1)(E) - Removing Electrical Components; Removing Display PCB

10 Servicing
359
SMGB0087 rev.0 - 12/2013
10
10.2.8 Removing electrical components
Removing Electrical Box
1 Remove the pipe cover following Removingpipecover.
2 Remove 3 xing screws and remove the upper cover.
3 Remove the electrical box cover.
4 Remove 1 xing screw and remove the terminal cover.
5 Disconnect all the wiring connected to the control PCB.
6 Remove 2 screws which x the electrical box.
7 Pull up and remove the electrical box.
1 Electrical box cover
2
Two screws
10.2.8.1 Removing Display PCB
1 Remove the pipe cover following Removingpipecover.
2 Remove 1 xing 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.
5
Holder.
1
2
3
4
5
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
• Toconnectwiringatreassemblingensurethattheterminalnumbersandwiringmarkbandcodesarematched.Inco-
rrectwiringmayresultinmalfunctionordamageofelectricalcomponents.
• Differentdipswitchsettingshallbeappliedforeachmodelwhentheelectricalboxisreplaced;SeechapterTroubles-
hooting.
• Payattentionnottoclampanywiringbetweenplatesorelectricalcomponentswhenclosingelectricalboxcoverorfront
coveratreassembling.