Hitachi RAS-(3-6)HVRNM2E Service Manual page 443

10 Servicing
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Removing electrical components
Removing control PCB (PCB1) and Relay (PCB3 PCB5)
1 Remove the service cover following
2 Remove all the wiring connected to the control PCB.
3 Move the four (4) holders to the direction marked with the arrow and remove the PCB.
Removing Relay PCB (PCB3 PCB5)
1 Remove the service cover following the
2 Disconnect all the wires connected with the relay PCB (PCB3 PCB5).
3 Clamp the middle part of the spacers (4 portions for each relay PCB) with long-nose pliers and remove PCB3 and PCB5
by pulling them out toward front side.
N O T E
• DO NOT touch the electrical components on the PCB. Pay attention not to bend or apply much force onto PCB
in order to avoid PCB failure.
1: Spacer
2: Middle Part of Spacer
3: PCB (1 3 5)
A: Enlarged View of P
B: Electrical Box (View from Top)
C: Spacer for PCB (1 3 5)
Removing Inverter Components and Capacitor for AC Fan Motor
1 Remove the service cover following the
2 Open the P-mounting plate by rotating 90 degrees to the left following the
see on page 429.
• Check that the LED201 (red) on DIP-IPM is OFF when the P plate is opened.
D A N G E R
• DO NOT touch electrical components while the LED1 (Red) is ON to avoid electrical shock. Wait until the LED
turns off.
3 Remove inverter components and capacitor for AC fan motor (CA) according to the procedure below and the following
figures.
Removing Inverter PCB (PCB2)
1 Disconnect the wirings of connector on the PCB2 as follows.
• CN2
• CN206
• PCN301
433
SMGB0064 rev.0 - 08/2011
Removing service cover, see on page 420.
Removing service cover, see on page 420.
Removing service cover, see on page 420.
1
A
1
Opening electrical box (P-Mounting
1
B
1
C
2
3
10
Plate),