6-4
FVS-1000 MMP1
B. Voltage Check/Adjustment of the Lower
Power Supply Unit
Measuring instruments: Digital voltmeter
Tool:
Extension board EX-632
(For front board)
Preparations
1.
Open the door at the bottom of the unit, and turn OFF
the breaker and two power supply switches.
2.
Remove the SY-256 board inserted in the right to
eighth slot of the processor, and insert the extension
board EX-632 along the guide rail.
3.
Turn ON the breaker and two power supply switches.
Voltage
Specification
Check terminal
Adjustment potentiometer
+
12 V
+
12.00
±
0.05 V dc
EX-632 board
Power supply unit
+
12 V
↔
GND (E2)
1+
12 VA
+
5 V
+
5.00
±
0.05 V dc
EX-632 board
Power supply unit
+
5 V
↔
GND (E2)
1+
5 VB
+3.3 V
+3.30
+
0.05
Vdc
EX-632 board
Power supply unit
_
0.00
+
3.3 V
↔
GND (E2)
1+
3 V
_
5 V
_
5.00
±
0.05 Vdc
EX-632 board
Power supply unit
_
5 V
↔
GND (E2)
1_
5 V
+
5 V (A)
+
5.10
±
0.05 Vdc
Lower power supply unit
Power supply unit
+
5 VA
↔
GND E
1+
5 VA
+
12 V (A)
+
12.00
±
0.05 Vdc
Lower power supply unit
Power supply unit
+
12 VA
↔
GND E
1+
12 VB
+12 V
+3.3 V
–5 V
+5 V
E2
+3.3 V -2
Extension board (EX-632)
Check terminals
Front cover
Extension board (EX-632)
Checking/Adjustments
1.
Connect the digital voltmeter between the check
terminals of the extension board EX-632 and power
supply unit, and check that the voltage of each check
terminals satisfies the specifications.
2.
If not satisfied, adjust using the respective controls.
6-2. Power Supply Unit Adjustment
