User`s manual

48
8. Service Procedure
8.4 Replacing the Power Board
8.4.1 Removing the Power Board
• Execute the Steps in “8.2.1.1 Power Off:” above.
• Execute the steps in “8.2.1.3 Base Unit Cover removal:”
above.
• Cut the 2 cable ties inside the base unit located on the
right side of the power board as shown in Figure 80 .
• Disconnect the Inverter power cable from J1 connector
using screw driver and communication cable from J2 con-
nector on the power board as shown in Figure 80 .
• Remove the GND wires of both the cables by removing
M3x6 HSHC screws using 2.5 mm Allen key as shown in
Figure 80 .
Inverter
cable(J1)
Communica-
tion cable(J2)
Ground point
Cable ties
Figure 80
• Disconnect the “Live(Blue) and Neutral(Black) wires(Ring terminals) of switch” from the terminal block
fixed on the power board clamp using phillips screw driver as shown in Figure 81 .
• Disconnect the GND(ring terminal) wire from the GND terminal on power board plate located just be-
low the switch by removing the M3X6 HSHC screw using 2.5mm allen key as shown in the Figure 81 .
• Remove the power board clamp from the base unit by removing 1 M3X6 HSHC Screw on top side
of the power board using 2.5mm allen key and 2 M3X8 HSHC screws, plain washers and Jam nuts
(screws will be inserted from rear side and nut with washer to be fixed from front side) using 2.5mm
allen key and 5.5mm nut driver at the locations shown in Figure 81 .
• Disconnect the wires(Pin terminals) from the J5 connector on the power board using a Jewel screw
driver as shown in Figure 82 (Live=Blue & Neutral=Black).
• Remove the 4 M3X6 HSHC screws on the power board assembly 2 on right side and 2 on left side us-
ing 2.5mm allen key as in Figure 83 .
Figure 81
Figure 82
Figure 83
• Hold the Power Board assembly with its plate and slowly remove the remaining 1 M3X6 HSHC screw
on the top side using 2.5mm allen key as shown in Figure 83 .
• Remove the Power Board along with plate by lifting it up slowly and ensuring that the connectors at the
bottom come out of the Base Unit rear cover.