Simplex 4007ES Hybrid - NAC Troubleshooting

3-6
Chapter 3 NAC Power Supply
Troubleshooting
Troubleshooting Table 3-7 gives the LED definition for the NAC power.
Table 3-7. 4007ES Hybrid Indicator LEDs
Figure 3-5. LEDs on the 4007ES Hybrid Power Supply
LED10 AC
Green. Off on AC failure
LED2 RUI Trouble Yellow. On for Class A RUI trouble
LED6 RUI OC Yellow. Indicates a short (overcurrent)
LED3 Comm
Yellow. Indicates that the communication between the NAC power sup-
ply and the CPU is lost
LED 4 Gen Power
Steady On, yellow. Indicates AC power loss, earth fault, overcurrent
and battery trouble
LED5, 7, 8,
and 9
NAC 1, 2, 3,
4
Steady On, yellow. Used to signal overcurrent, short, and open
circuit.
LED1 Aux/SNAC
Steady On, yellow. Use to signal overcurrent, short, and open
circuit.
LEDs
Aux/SNAC
Comm
Gen Power
NAC1
NAC2
NAC3
NAC4
LEDs
RUI TBL
RUI OC