8 Troubleshooting
304
SMGB0064 rev.0 - 08/2011
Procedure of checking other main parts
Procedure of checking other main parts for IVX Series
1. High voltage discharge work for replacing parts
D A N G E R
• Perform this high voltage discharge work to avoid an electric shock
• DIP-IPM
Procedure:
a. Turn OFF the main switches and wait for three minutes. Check to ensure that no high voltage exists. If LED201 is ON
after start-up and LED201 is OFF after turning OFF power source, the voltage will decrease lower than DC50V.
b. Connect connecting wires to an electrical soldering iron.
c. Connect the wires to terminals, P and N on DIP-IPM. => Discharging is started, resulting in hot soldering iron. Pay at-
tention not to short-circuit between terminal P(+) and N(-).
d. Wait for 2 or 3 minutes and measure the voltage once again. Check to ensure that no voltage is charged.
1. Solder bit.
2. Plug.
3. Connecting wires.
4. Transistor module (IPM).
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