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TROUBLESHOOTING
D SERIES CONTROLLER
TROUBLESHOOTING AND COMPONENT REPLACEMENT
1-38 August 9, 2005
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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
210 VAC
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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