Sony BKFV-100/1, Руководство по обслуживанию

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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