Chapter 7 Troubleshooting
PAGE 7-8
• Code A04-04 - SYSTEM MEMORY ERROR / STORED DATA WRITE ERROR
An error occurred during a WRITE attempt to SDRAM saved data.
CAUSE:
1. If the controller is located in an electric or magnetic noise field.
2. SDRAM chip has malfunctioned.
RECOVERY:
1. Verify that the controller is not located near any high voltage transient power sources. Relocate as
required and reinitialize the system.
2. Turn control power off to the unit for at least 5 minutes then re-apply power.
3. Replace controller.
• Code A04-05 - SYSTEM MEMORY ERROR / STORED DATA READ ERROR
An error occured during a READ attempt from SDRAM saved data.
CAUSE:
1. If the controller is located in an electric or magnetic noise field.
2. SDRAM chip has malfunctioned.
RECOVERY:
1. Verify that the controller is not located near any high voltage transient power sources. Relocate as
required and reinitialize the system.
2. Turn control power off to the unit for at least 5 minutes then re-apply power.
3. Replace controller.
• Code A04-06 - SYSTEM MEMORY ERROR / RTC WRITE ERROR
An error occurred during a WRITE attempt to the Real-time Clock chip.
CAUSE:
1. If the controller is located in an electric or magnetic noise field.
2. RTC chip has malfunctioned.
RECOVERY:
1. Verify that the controller is not located near any high voltage transient power sources. Relocate as
required and reinitialize the system.
2. Turn control power off to the unit for at least 5 minutes then re-apply power.
3. Replace controller.
• Code A04-07 - SYSTEM MEMORY ERROR / RTC READ ERROR
An error occurred during a READ attempt from the Real-time Clock chip.
CAUSE:
1. If the controller is located in an electric or magnetic noise field.
2. RTC chip has malfunctioned.
RECOVERY:
1. Verify that the controller is not located near any high voltage transient power sources. Relocate as
required and reinitialize the system.
2. Turn control power off to the unit for at least 5 minutes then re-apply power.
3. Replace controller.
To Next Page