35
Model 4048 CCE Set Up
Dual Power Supplies
To adjust a system with two power supplies
1. Disconnect AC power from one power supply.
2. Monitor the +5V
DC
test point of the powered supply and turn the ADJ
potentiometer until the test point reads 5.18V
DC
.
3. Monitor the +12V
DC
test point of the powered supply and turn the ADJ
potentiometer until the test point reads 13.5V
DC
.
4. Connect power to the disconnected supply and remove power from the adjusted
supply.
5. Repeat
for the second power supply.
6. Both power supplies should now be adjusted. Reconnect power to the disconnected
supply.
Low Voltage
If one or more cards in the common control equipment card cage has the red FAIL LED
light turned on, the power supply level should be checked. The Fail LED is tied to a low
voltage reset circuit that monitors the +5V
DC
supply to the card. Measure the output of the
+ 5V
DC
power supply at the test point on the front of the power supply with all cards
installed in the card cage. Adjust the +5V
DC
power supply according to the previous
procedure.
Overvoltage
When using older power supplies, adjusting the potentiometer too high will put the 5V
DC
supply into overvoltage protection (no output voltage). If this happens, turn the ADJ
potentiometer down and cycle the AC power. The 5V
DC
supply will reset. Newer power
supplies do not have this feature and cannot be adjusted beyond 5.3000V
DC
.
Note
Power supply adjustment must be performed on one power supply
at a time, with the other power supply disconnected from its power
source.
Caution!
The adjustment direction of the +5V
DC
potentiometer varies
depending on the version. Newer units require a counter-
clockwise rotation to increase voltage.
Note
If the +5V
DC
Fault LED is lit on a single power supply in a dual
supply setup and the measured voltage is inside the normal range,
this indicates there is imbalanced sharing. Increase the voltage on
the supply with the lit LED.
!
Содержание 4000 Series
Страница 1: ...Series 4000 Communication Control System Installation and Configuration 025 9533Y...
Страница 6: ...6 025 9533Y...
Страница 28: ...Introduction 28 025 9533Y...
Страница 88: ...Common Control Equipment Installation 88 025 9533Y Figure 22 Console Duplex Wall Jacks...
Страница 110: ...Common Control Equipment Installation 110 025 9533Y...
Страница 172: ...Console Installation 172 025 9533Y...
Страница 192: ...Audio Level Adjustments 192 025 9533Y...
Страница 230: ...Accessory Installation 230 025 9533Y...
Страница 236: ...Console ANI Programming 236 025 9533Y...
Страница 339: ...339 RSMP Operation Figure 99 Main Screen...
Страница 350: ...Radio System Management Program 350 025 9533Y...
Страница 362: ...Appendix B Troubleshooting 362 025 9533Y...
Страница 417: ...417 Index wiring accessories 164 wall jack 86 wiring diagram for M4219 244 X XMT button labels 332 XP settings 247...
Страница 418: ...Index 418 025 9533Y...