Toshiba RAV-SM800XT-E, RAV-SM560XT-E service manual Cooling and heating model

<Inspection procedure>

-Cooling and heating model-

Turn on power supply.

Does OPERATION		NO
lamp blink?
	YES
			NO
Is it possible to start

unit by remote control?

YES

Is it possible to detect	NO
DC 15 − 60 V between

2and 3 on terminal block?

YES

Refer to item Power can not be turned on.

Refer to 9-9 Troubleshooting for Remote Control.

Check TA and TC sensors

or refer to 01 − 04 in Table 9-4-1.

Is crossover cable normal?

NO

Connect crossover

cable properly.

	YES
Is it possible to detect			NO
AC 12 V on secondary side
(CN06) of transformer?
	YES
			NO
Is it possible to detect
DC 5 V at Q60 and 12 V at Q50?
	YES
		NO
All lamps on
indoor unit normal?
	YES
Are TD and TE sensors normal?			NO
(TD=17.9 kΩ at 50°C)
(TE=10 kΩ at 25°C)
	YES
			NO
Is it possible to detect

AC 220 − 240 V at CN11?

YES

NO

Does MG switch operate?

(Next Page)

Replace outdoor transformer.

Replace outdoor

P.C. board.

Refer to item 9-8-3How to check outdoor P.C. board.

Replace sensors.

Replace outdoor

P.C. board.

Replace MG switch.

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