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5-2. Adjustment of Secondary Power Supply Voltage
5-2-1. DVS-7000A
DVS-7000A has the power sources of +5 V (A), +5 V (B), +3 V, and _5 V. For the voltage
measurement of +5 V (A), +3 V, and _5 V and on the CPU-264 board and +5 V (B)or XPT-16 board the
test terminals are provided that can be connected to the probe of a digital voltmeter.
After installation of all required plug-in boards is completed, confirm the power supply voltage in the unit
as described below.
n
Confirm that the power unit is properly inserted and secured by the four screws.
When only standard power unit is installed, refer to the following procedures for power
unit A.
This standard power unit is named as power unit A
(Procedures for Power Unit A)
(1) Detach the front panel of DVS-7000A.
(Refer to "4-3-1. Detaching and Attaching of Front Panel")
(2) Turn on the power switch of the power unit A.
(3) Confirm that all indicators (D15, D16 and D18) on the CPU-264 board light.
(4) Connect the digital voltmeter between test terminals on the CPU-264 and the XPT-16 boards and
confirm that the voltage value of each test connector meet the specification shown in the table below.
If the specification does not meet, adjust the voltage by the adjustment potentiometers of the power
unit A.
n
When connecting the probes of the digital voltmeter between test terminals, take care to avoid
contacting the probes with the GND areas of the shield plates.
When the power unit BKDS-7690 is installed, refer to the following procedures for power
unit B.
The power unit of BKDS-7690 is named as power unit B.
(Procedures for Power Unit B)
(1) Turn off the power switch of the power unit B.
(2) Carry out all steps of "procedures for power unit A".
(3) Turn off the power switch of the power unit A and turn on the power switch of the power unit B.
(4) Confirm that all indicators (D15, D16 and D18) on the CPU-264 board light.
DVS-7000AE IM
5-2. Adjustment of Secondary Power Supply Voltage
5-13
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