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Hitachi RAS-(4-6)HVRNS2E - Removing Diode Module (DM); Removing Transistor Module (IPM); Removing Capacitor for AC Fan Motor (CA)

Hitachi RAS-(4-6)HVRNS2E
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10 Servicing
435
SMGB0064 rev.0 - 08/2011
10
Removing Diode Module (DM)
Disconnect all the wirings connected to the diode module as shown below.
1 Disconnect the wirings of terminal + - U V W on the diode module.
2 Remove two (2) M5 xing screws on the diode module.
3 Remove the diode module from the electrical box.
Check to ensure that the LED201 (Red) of the PCB2 is off.
1: 5 Screws (M5)
2: Fixing screw (M5)
1
2
2
Removing Transistor Module (IPM)
Disconnect all the wirings connected to the transistor module as shown below.
1 Remove PCB2 from IPM according to the procedure of “Removing Inverter PCB (PCB2)”.
2 Disconnect the wirings of P N U V W on the transistor module.
3 Remove four (4) M4 xing screws on the transistor module.
4 Remove the transistor module from the electrical box.
5 Reassemble the parts in the reverse order of removing order.
1. Screws for PCB2 (M3)
2. Screw (M5)
3. Fixing screws for transistor module (M4)
4. Led201
5. Screws for PCB (M3)
6. CN207
7..CN026
8. CN2
891
5
2
1
10
3
4
5
6
7
5
2
1
Removing Capacitor for AC Fan Motor (CA)
1 Disconnect the wirings of capacitor for AC fan motor (CA).
2 Remove one (1) screw for xing the capacitor and remove the capacitor
Removing other electrical components
1 Remove the service cover following the Removing service cover, see on page 420.
2 Open the P-mounting plate by rotating 90 degrees to the left as show in the Opening electrical box (P-Mounting Pla-
te), see on page 429.
Check to ensure the LED201 (Red) of the inverter PCB (PCB2) is OFF when opening P-mounting plate.
N O T E
Do NOT touch the electrical components when the LED201 (Red) is ON to avoid electrical shock.
3 Remove other electrical components according to the procedure below and the gures are on the next page.

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