GREER Company
1918 East Glenwood Place
Santa Ana CA 92705
Page 28 of 44
MicroGuard
®
586 Operation/Setup Manual
W458200 REV C 10/29/02
7. Replace the Computer
This message indicates an internal fault in the computer. In some cases, it may not be necessary to replace
the computer unit.
a. Remove the computer unit lid and check the Internal LED status indicators located
on the computer circuit board.
b. Review the Computer Internal Status Indicators section (page 30) in this manual.
To replace the computer unit:
• Place the boom in its rest.
• Turn off electrical power.
• Disconnect all electrical connectors from/to the computer.
• Disconnect hydraulic hose connections from/to the computer.
• Remove computer from mounting.
Note: The hydraulic hoses connect directly to the boom hoist cylinder. Do not operate the crane unless the
computer has been properly replaced or the hydraulic connections are properly capped.
To fit a new computer unit:
• Mount the computer unit.
• Ensure that a new system chip has been supplied with the computer.
Note: Do not use the system chip from the original computer unit.
• Ensure that all electrical power is turned off.
• Connect all electrical connectors to the computer unit.
• Connect hydraulic hoses to the computer pressure ports.
(Green is base-side and red is rod-side of the boom hoist cylinder.)
• Follow the System setup instructions in this manual.
Note: If more than one fault is present, the most serious fault will appear first and must be resolved first.
When the first fault is corrected, other existing faults will be displayed and must be resolved one at a time until
no further fault codes are listed.
Fault messages should be reported to the Service Representative along with any noticeable damage done during System installation or
routine checks. Please refer to Routine Checks and Maintenance in this manual.
To Next Page
Loading...
