Toshiba RAV-SP804AT-E, RAV-SP804ATZ-E Exchange of 1. Control P.C. board, No. Part name, Procedure

No. Part name Procedure Remarks

4Exchange of 1. Control P.C. board

electric parts	1) Carry out work of 1 of 1 .			Compressor lead
						Relay connector:
				Control		2 positions
				P.C. board		(1 at rear side)
		WARNING		Fan motor		Bundling band
						(Reactor lead)
	Never disassemble the inverter for 1 minute
	after power has been turned off because an
	electric shock may be caused.
	2) Remove the connectors connected to the
	control P.C. board.
	(Indoor power supply, temperature sensors,
	PMV coil, 4-way valve coil, compressor case			Compressor
	thermo, fan motor)
				case thermo
	∗ Unlock the lock of the housing part and
				Temperature		Reactor lead wires
	then remove the connectors.			sensor
	3) Remove the lead wires connected to the					(White,Charcoal gray)
	control P.C. board.
	(Torque at tightening time: 1.47 ± 0.1N•m)
	Compressor lead					Earth wire
	U: CN200		Red
	V: CN201		White			4-way valve coil
	W: CN202		Black
	Reactor lead			PMV coil	Indoor power supply
	Relay connector: 2 positions			Screw for fixing P.C. board

Remove the power wire from the power supply terminal block.

(Torque at tightening time: 2.5 ± 0.1N•m)

4) Remove the earth wire from the control P.C. board. (Truss B tight screw Ø4 × 6, 1 pc.)

5) Remove the fixing screws of the control P.C.
board.	Screw for fixing element (7 positions)
(Screw with collar for fixing element Ø3 × 16,
7 pcs. Pan S tight screw for fixing P.C. board
Ø3 × 20, 1 pc.)	Power supply terminal block

6)Remove the control P.C. board. (Supporter: 5 positions)

NOTE:

It is difficult to take out it because of radiator grease for heat sink.

7) Mount a new control P.C. board.

NOTE:	Control P.C. board Insulating sheet (Q300)
Do not forget to attach the aluminum plate (Q201)
	Aluminum plate (Q201)
and the insulating sheet (Q300).
(Applying a little of radiator grease at the rear
surface of the insulating sheet in advance to
adhere to the heat sink makes easy the work.)

Radiator grease

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