Sony DVS-2000C - Page 22

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@ TERMINAL connector (D-sub 9-pin)
Connect a control terminal for use in maintenance and
initial settings. This connector complies with the RS-
232C standard, and has the same function as that of the
TERMINAL connector on the switcher rear panel.
@ GND TEST connector
Use as a ground connector during voltage tests with the
+5V TEST @, +3V TEST © and—-5V TEST @ connec-
tors.
@® -5V indicator
Shows the state of the -5 V power supply in the system as
a whole. Lights when power is being supplied, and does
not light when power is not being supplied to this board
or when the —5 V fuse on this board is blown.
® +3V indicator
Shows the state of the +3 V power supply in the system as
a whole. Lights when power is being supplied, and does
not light when power is not being supplied to this board
or when the +3 V fuse on this board is blown.
@ +5V indicator
Shows the state of the +5 V power supply in the system as
a whole. Lights when power is being supplied, and does
not light when power is not being supplied to this board
or when the +5 V fuse on this board is blown.
® InT (interrupt) indicator
Shows the status of the CPU.
Bright light: CPU has been halted.
Dim light: CPU is operating normally.
Out: Abnormal field pulses from signal generators.
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Section? OPERATION
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Cantian + ADEORATIOR