Hitachi RAS-(3-6)HVNC1(E) - Page 451

10 Servicing
437
SMGB0087 rev.0 - 12/2013
10
10.8.15.2 Removing Inverter module
1 Remove the service cover following “10.8.1 Removing
servicecover”.
2 Open the P plate turning counter clockwise approximately
90° following “10.8.9Openingelectricalbox(P-Mounting
Plate)”.
3 Check that the LED201 (red) on Inverter is OFF when the
P plate is opened.
4 Remove 4 screws M3, remove the bushes and remove
the spacers xing the inverter.
N O T E
Whenmountingagainbesuretoplacethebushesandspa-
cers.
Holder
PCB
Spacer
Inverter PCB
Bush
M3 screw
Removing Diode Module (DM)
1 Disconnect the wirings of terminal + - U V W on the diode module.
2 Remove 2 M5 xing screws on the diode module.Remove the dio-
de module from the electrical box.
1 5 Screws (M5)
2
Fixing screw (M5)
Removing Transistor Module (IPM)
1 Disconnect all the wirings connected to the transistor module.
2 Remove the connectors CN2, CN3, CN206, PCN301 and
PCN302 from the transistor module.
3 Disconnect the wirings of P N U V W on the transistor module.
4 Remove 4 M4 xing screws on the transistor module.
5 Remove the transistor module from the electrical box.
6 Reassemble the parts in the reverse order of removing order.
N O T E
• Toconnectwiringatreassembling,ensurethattheterminalnum-
bersandwiringmarkbandcodesarematched.Ifconnectionsare
wrong,thereisthepossibilityofwrongoperationandtocause
damagetoelectricalparts.
• WhenattachingthePCB,orwhenattachingthepartsattachedto
thePCB,payattentionnottoclampanywiringbetweenplatesor
electricalcomponents.
1 Screws for transistor module (M4)
2
Screw (M5)
3
PCN301
4
PCN302
5
Screws for PCB (M3)
6
CN3
7
Inverter PCB
8
CN206
9
CN2
10
LED201