Hitachi RAF-25RPA Service Manual page 79

DISCHARGE, PROCEDURE AND POWER SHUT OFF METHOD FOR POWER CIRCUIT
Caution
• Voltage of about 350 V is charged between the terminal of smoothing capacitors (375F x 2).
• During continuity check for each circuit part of the outdoor unit, be sure to discharge the smoothing
capacitors.
Discharge Procedure
1. Turn off the power.
2. After power is turned off, wait for 10 minutes or more. Then, remove electrical parts cover
and apply soldering iron of 30 to 75 W for 15 seconds or more to IPM(25) and IPM(33)
terminals on the main P. W .B. as shown in the figure below, in order to discharge voltage
in smoothing capacitor.
LEAD WIRE
WARNING
ＹＥ Ｌ
ＧＲＮ ＧＲＮ
Ｂ ＬＵ
ＢＲＮ
ＹＥ Ｌ
ＸＸＸＸＸＸ ＸＸＸＸＸＸＸＸ
79
Do not use a soldering iron with
transformer: Otherwise, thermal fuse
inside transformer will be blown.
ＧＲＮ２
ＧＲＹ
０ ・ ・ ・ ・ ・ ・ ＊＊＊＊＊＊＊＊
Ａ Ｂ Ｃ Ｄ
ＸＸＸＸＸＸＸＸＸＸＸＸ
Ｂ Ｌ Ｋ
ＧＲＮ１
ＷＨＴ
ＧＲＮ３
ＲＥＤ
ＢＲＮ