Toshiba RAS-4M23SAV-E Service Manual page 109

12-3. Outdoor Unit
No. Part name
Common 1. Detachment
1
procedure
Inverter 1. Detachment
2
assembly
Be careful to check the inverter because
high-voltage circuit is incorporated in it.
Be careful to discharge the capacitor be-
cause the electrolytic capacitor cannot
naturally discharge and voltage remains
according to trouble type in some cases.
This capacitor is one with mass capacity.
Therefore, it is dangerous that a large spark
generates if short-circuiting between
polarity with screwdriver, etc. for discharging.
Procedure
1) Stop operation of the air conditioner, and turn
"OFF" the power breaker.
2) Remove the side panel. (Ø4 × 10L 3 pcs.)
3) Remove the cord clamp.
(Ø4 × 14L 5 × 2 = 10 pcs.)
Disconnect the connecting cables and power
cord from the terminals.
4) Remove the upper panel. (Ø4 × 10L 6 pcs.)
5) Remove the front panel. (Ø4 × 10L 3 pcs.)
6) Remove the back panel. (Ø4 × 10L 6 pcs.)
7) Remove the air outlet panel. (Ø4 × 10L 8 pcs.)
1) Perform work from item 1) to 5) of
2) Remove screw (ST1T Ø4 × 10L 1 pc.) of the
upper left part of the inverter cover.
• If removing the inverter cover in this condi-
tion, P .C. board can be checked.
• If there is no space in the upper part of the
upper cabinet, perform work from 6) to 7) of
1
and remove the partition fixing plate
(ST1T Ø4 × 10L 1 pc.).
3) Perform discharging by connecting the dis-
charging resistance (approx. 100Ω 40W) or
plug of soldering iron to
C15 (printed "CAUTION HIGH VOLTAGE" is
attached.) electrolytic capacitor (500µF) on
P .C. board.
NOTE
4) Remove screw (Ø4 × 10L 2 pcs.) fixing the
valve clamping plate/the inverter box, and
fixing the back panel/the inverter box.
5) Remove various lead wires from the holder at
upper part of the inverter box and cut 2 tie-lap
ties binding each lead wires :
6) Pull the inverter box upward.
7) Disconnect connectors of various lead wires.
1
.
, terminals of the
,
– 109 –
Remarks
Air outlet panel
Upper panel
Fan
guard
4
Front panel
Inverter cover
P .C. board
(Soldered surface)
Fixing plate
(Partition)
The holder at upper part.
Tie-lap ties (2 pcs)
Back panel
Side panel