How To Check Fan Power Supply P.c. Board And Fan Ipdu; Mcc-1439 Front View - Toshiba Super MMU-AP0091H Service Manual

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.
1 DC280V output
2
Control power voltage
3
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>
Check item
F500 10A 250V~
C501
C520
C509
RY500
R503
– ~ ~ +
R505
DB500
MCC-1439-05S COMPONENT SIDE
Check position
 ƒ
Between CN500 and
 …
Between CN500 and
‚ …
Between CN500 and
CN505 RED CN504 BLU UART
UNIT
5 3 1 5
GND +5V
+12V
C520
+7V
11
1
C508
5 T500
L501
+
F501
T6.3A 250V~
BLK
CN506
3 CAPA 1
CN500
265
Criteria
DC260 to DC340V
DC12V
DC7V
CN503
2
1
J500
R513
G O
IC503
+
IC500
+
6
R519
D505