Toshiba MMU-AP0091H How to Check Fan Power Supply P.C. Board and Fan Ipdu, MCC-1439 Front View

17-2-4. How to Check Fan Power Supply P.C. Board and Fan IPDU

The fan power supply P.C. board supplies DC power. It supplies DC280V for the fan IPDU, and DC12V and DC7V for the control power supply respectively. If the control power is not supplied, a communication error (Error code [E31]) is out.

1.How to check fan power supply P.C. board (MCC-1439)

As shown in the following table, measure the voltage of the check positions with a digital tester.

No.	Check item	Check position	Criteria
1	DC280V output	Between CN500 • and ƒ	DC260 to DC340V
2	Control power voltage	Between CN500 • and …	DC12V
3		Between CN500 ‚ and …	DC7V

2.How to check fan IPDU

1.Check that the lead wires are correctly inserted into 250 fasten terminal of DC280V input and into the communication connector (CN01).

2.After then replace the fan IPDU if an abnormality is recognized.

MCC-1439 Front View

1 AC IN 5L500L506

RED

CN510

C513

F500

C509

10A	250V~
	R523

+12V

C520		1	IC501
C501
	C522	C521	3
			6
	R511	+
		R518	10
RY500	L501
R503

CN505 RED			CN504 BLU UART 2
	5 UNIT	3 1	5			1			CN503 WHI	6
										UART 11
GND		+5V				J505 J503	J500
	C520		J501	J504	J502
									R513
			+7V 11				G O
	+									C524
						IC503			+
	1
								C523	+	C526
						IC500
									+	C531
						6	R
C508	5		T500
										R519
+										D505
		F501						C507
			T6.3A 250V~

CN503

– ~ ~ + R505

DB500

MCC-1439-05S COMPONENT SIDE

1

DCOUT	CN500WHI	DCIN/OUT	CN502BLU	1 3
BLK
CN506
3 CAPA 1		3

CN500

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