Toshiba RAS-10YKV-E, RAS-13YKV-E Checking Method for Each Part, Case that product is good

10-8-5. Checking Method for Each Part

No.	Part name		Checking procedure
1	Electrolytic capacitor	1.	Turn OFF the power supply breaker.
	(For raising pressure,	2.	Discharge all four capacitors completely.
	smoothing)	3.	Check that safety valve at the bottom of capacitor is not broken.

4.Check that vessel is not swollen or exploded.

5.Check that electrolytic liquid does not blow off.

6.Check that the normal charging characteristics are shown in continuity test by the tester.

	side	C12 C13	C14 C15	Case that product is good
	IGBT			Pointer swings once, and
	sink			returns slowly. When
			MCC-808	performing test once again
	Heat		surface	under another polarity, the
			Soldered
				pointer should return.
	C12, C13, C14 →		500µF/400V
2 Converter module	1. Turn OFF the power supply breaker.

2.Discharge all four capacitors completely.

3.Check that the normal rectification characteristics are shown in continuity test by the tester.

Mark

+

~

–

~

A

E

G

1

2

+

~

–

~

A

E

G

1

2

		Diode check						IGBT check
Tester rod				Resistance value		Tester rod			Resistance value
+		–				+		–
				in good product					in good product
~ 1		–				~ 2		E
~						G
	2	~		50k	or more				50k	or more
+			1			~	1		(0	in trouble)
				(0	in trouble)			A
		~ 2				~
							2
E		~	1
		~ 2

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