Sony FVS-1000 System Maintenance Manual page 206

6-2. Power Supply Unit Adjustment
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.
Extension board (EX-632)
Check terminals
+12 V
+5 V
+3.3 V
+3.3 V -2
–5 V
Front cover
Voltage Specification
+12.00 ± 0.05 V dc
+12 V
+5.00 ±0.05 V dc
+5 V
+0.05
+3.3 V +3.30
_0.00
_5.00 ±0.05 Vdc
_5 V
+5.10 ±0.05 Vdc
+5 V (A)
+12.00 ± 0.05 Vdc
+12 V (A)
6-4
E2
Extension board (EX-632)
Check terminal
EX-632 board
+12 V ↔ GND (E2)
EX-632 board
+5 V ↔ GND (E2)
Vdc EX-632 board
+3.3 V ↔ GND (E2)
EX-632 board
_5 V ↔ GND (E2)
Lower power supply unit
+5 VA ↔ GND E
Lower power supply unit
+12 VA ↔ GND E
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.
Adjustment potentiometer
Power supply unit
1+12 VA
Power supply unit
1+5 VB
Power supply unit
1+3 V
Power supply unit
1_5 V
Power supply unit
1+5 VA
Power supply unit
1+12 VB
FVS-1000 MMP1