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5.11 B-GATE -4 VOLT LOGIC SUPPL V
#3
5.11.1 Overcurrent Adjustment
5.11. 1. 1 For Regulator Card Part 5808959 (See Figure
5-4 for Identification)
Caution
Check the overcurrent adjustment whenever replacing
a -4V regulator card.
1.
Connect the meter across the -4V load between
position 6 and ground (position 7) on B-gate lower
laminar bus.
2.
Set the voltage adjustment potentiometer (Figure
5-4) to -4.6V. Do not go beyond this.
3.
Turn the overcurrent potentiometer (Figure 5-4)
counterclockwise
until the regulator trips to cause a
power down. If you cannot reach -4.6V before the
regulator trips, turn the overcurrent adjustment
clockwise until you can just reach -4.6V before the
regulator trips.
4.
Turn the voltage adjustment potentiometer down
until the machine can be powered up. Now the over-
current adjustment is set.
5.
Adjust the voltage adjustment potentiometer (5 .11.2).
Page of SY31-0244-2
Revised July 6, 1971
By
TNL: SN31-0327
5.11.1.2 For Regulator Card Part 5860519 (See Figure
5-4 for Identification)
No adjustment for overcurrent protection
is
necessary.
5.11.2 Voltage Adjustment
1.
Connect the meter across the -4 V load between
position 6 and ground {position 7) on B-gate upper
laminar bus.
2.
Set the voltage adjustment potentiometer (Figure
5-4) to -4.0SV.
5.11.3 Overvoltage Adjustment
There is no field adjustment for overvoltage.
It
is set and
sealed at the time of manufacture. Replace regulator card
if overvoltage condition fails to trip regulator. (Be sure
to check the overcurrent adjustment.)
5410 FEMM 5-9
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