Toshiba RAS-B16N3KV2-E1 Service Manual page 70

RAS-B16N3KV2-E1 / RAS-16N3AV2-E
Sensor leads
K Precautions when inspecting the control section of the outdoor unit
NOTE :
A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter). Therefore, if the power
supply is turned off, charge (charging voltage DC280 to 380V) remains and discharging takes a lot of time.
After turning off the power source, if touching the charging section before discharging, an electrical shock may
be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.
< Discharging method >
1. Remove the inverter cover (plating) by opening four mounting claws.
2. As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to
voltage between + – terminals of the C14 ("CAUTION HIGH VOLTAGE" is indicated.) electrolytic capacitor
(500µF/400V or 760µF/400V) on P.C. board, and then perform discharging.
Do NOT lay the circuit board assembly flat.
Discharging position
(Discharging period
10 seconds or more)
– 69 –
FILE NO. SVM-15006
Plug of
soldering iron
Inverter cover
Fig. 11-6
Fig. 11-5
P . C. board
(Soldered surface)