TROUBLESHOOTING
D SERIES CONTROLLER
TROUBLESHOOTING AND COMPONENT REPLACEMENT
1-38 August 9, 2005
Kaaaw sk
ERROR CODE D1510 Primary power source is too low.
Voltage level of the AVR primary power supply is too low (150-158 VAC or less for 1-2
sec.).
Mother Board
1KP board
1KB board
1KX board
EPLD
AVR for
control power
Main
disconnect
Primary
power
Control
power
210VAC
AC error
signal
Local
bus
F1 T1 F3
1KQ/1NQ board
Transformer
Circuit
breaker
Main causes include:
1. Drop in the primary power supply voltage.
2. Defective AVR.
3. Defective NFB F1.
4. Defective 1KP power sequence board.
5. Defective 1KQ/1NQ relay board.
6. Power supply circuit problem.
Verify the power supply to the controller is within ratings.
Check the AVR and NFB F1 and replace as necessary.
Confirm supply power is within specifications.
Replace the 1KP board.
Replace the 1KQ/1NQ board.
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