Electric Shock - Toshiba Carrier RAV-SP180AT2-UL Service Manual

No. Part name
1. Turn off the power supply.
Inverter
assembly
1) Perform work of Detachment 1 of
2) Take off screws, which fix the upper part of the
front cabinet and the inverter cover.
(M4, 8 mm, 2 pcs.)
• If removing the inverter cover under the above
The control circuits (including each sensor circuit
and 5V, 12V of PMV circuit, etc.) of this control P.C.
board are high-voltage circuits.
Before work, be sure to turn off the power supply.
Take sufficient care to an electric shock on the
control circuits and the conductive parts of their parts.
3) Using the discharging resistor (100Ω/40W or
equivalent) or plug of the soldering iron, electrify
continuously between
electrolytic capacitor of 3 phases: C10, 11 and single
phase: C12, 13, 14 ("CAUTION HIGH VOLTAGE" is
printed) on P.C. board, and then discharge power.
For the products that the rear side are coated,
perform normal discharge.
NOTES:
According to the trouble condition, the electrolytic
capacitor may not normally discharge and the voltage
may remain.
Therefore be sure to discharge the capacitor.
As the electrolytic capacitor is one with a large capacity,
never use a screwdriver and others for short-circuiting
between
it is very dangerous because a large electric spark will
generate.
4) Perform works Detachment 1 of
5) Take off fixing screw between the partition plate
and the inverter box. (M4, 8 mm, 1 pc.)
6) Remove various lead wires from the holder at
upper part of the inverter box.
7) Pull the inverter box upward.
In this time, cut the bundling bands which bind
each lead wire.
8) Remove connectors of various lead wires.
NOTE:
When removing the connectors, do not hold lead wires
by hands, but hold the connectors.
Procedure
condition, P.C. board can be checked.

ELECTRIC SHOCK

and
+
and electrodes for discharging; otherwise
+ –
.
poles of the
–
and .
– 85 –
Remarks
Screws Screws Screws
Front Front Front
cabinet cabinet cabinet
Inverter cover Inverter cover Inverter cover
Plug of soldering iron Plug of soldering iron Plug of soldering iron
Discharging position Discharging position Discharging position
(Discharging period (Discharging period (Discharging period
10 seconds or more) 10 seconds or more) 10 seconds or more)
Fixed screw Fixed screw Fixed screw
Partition plate Partition plate Partition plate
Inverter assembly Inverter assembly Inverter assembly
Remove the connectors Remove the connectors Remove the connectors
with locking function by with locking function by with locking function by
pushing the part indicated pushing the part indicated pushing the part indicated
by the arrow mark. by the arrow mark. by the arrow mark.