Toshiba RAS-B13SKVP-E, RAS-B10SKVP-E, RAS-10SAVP-E + ~ ~, Checking Method for Each Part, DBO1

11-9-5. Checking Method for Each Part

No.	Part name		Checking procedure
1	Electrolytic capacitor	1. Turn OFF the power supply breaker.
	(For boost, smoothing)	2. Discharge all three capacitors completely.
		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	Case that product is good
		IGBT		Pointer swings once, and returns
		sink		slowly. When performing test
			MCC-5009	once again under another polarity,
		Heat		the pointer should return.
			surface
			Soldered
		C12, C13, C14 → 500µF/400V
2	Diode block	1. Turn OFF the power supply breaker.

2.Completely discharge the four electrolytic capacitors.

3.Remove the diode block from the PCB (which is soldered in place).

4.Use a multimeter with a pointer to test the continuity, and check that the diode block has the proper rectification characteristics.

1	+		Tester rod			Resistance value
			+		–	in good product
			~	2
~	~	+ ~ ~ –			+ 1
			~
3	2			3		∞
		1 2 3 4	–		~ 2
				4
–	4	(DBO1)			~ 3

10 to 20 Ω when the multimeter probe is reversed

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