Greer Company
Greer Company
Greer Company
Greer Company
Crane Systems
1918 EAST GLENWOOD PLACE, SANTA ANA, CA 92705
Tel: (714) 259 9702 Fax: (714) 259 7626
MicroGuard
424 Operation/Troubleshooting Manual Horizontal Display Hydraulic Cranes
44 of 52
W424103 REV A 02/13/01
BOOM ANGLE SENSOR REPLACEMENT
BOOM ANGLE SENSOR REPLACEMENT
BOOM ANGLE SENSOR REPLACEMENT
BOOM ANGLE SENSOR REPLACEMENT
To replace the Boom Angle Sensor that is fitted inside
the reeling drum, use the following procedure:
1. With the power off, remove the 4 bolts holding the
cover of the reeling drum and remove the cover.
2. Disconnect the 3 wires connecting the angle sensor
to the terminal strip. Remove the two bolts securing
the sensor to the reeling drum and remove the old
angle sensor.
3. Install the new sensor in the reeling drum in the
original location, secure it with the mounting bolts
and connect the cable.
4. Raise the boom to a 60° angle and verify the angle
with an inclinometer. While viewing the display adjust
the sensor until the display reads 60° and tighten the
mounting bolts.
5. Place the boom horizontal, verify that it is at 0° with
an inclinometer.
6. Verify that the displayed boom angle is
reading 0° +/- 0.5°.
EXECUTIVE ROM CHIP REPLACEMENT
EXECUTIVE ROM CHIP REPLACEMENT
EXECUTIVE ROM CHIP REPLACEMENT
EXECUTIVE ROM CHIP REPLACEMENT
The Executive ROM Chip contains the main program
data that the computer uses to function and must be
specific to the system.
1. Access the Main Computer Board. Refer to page 33
of this manual.
2. With the power off remove IC2, the Executive ROM
Chip from its socket. Refer to General Chip Removal
and Installation (page 45) in this manual.
3. Install the new Executive ROM Chip into the socket.
Make certain the notch in the chip is lined up with the
notch in the socket and all pins are properly inserted.
PERSONALITY ROM CHIP REPLACEMENT
PERSONALITY ROM CHIP REPLACEMENT
PERSONALITY ROM CHIP REPLACEMENT
PERSONALITY ROM CHIP REPLACEMENT
The Personality ROM Chip must be the proper chip for
the particular crane serial number. This chip contains
calibration data that is unique to each machine.
1. Access the Main Computer Board. Refer to page 33
of this manual.
2. With the power off, remove IC7 (the Personality
ROM Chip) from its socket. Refer to General Chip
Removal and Installation (page 45) in this manual.
3. Install the new Personality ROM Chip into the socket.
Make certain the notch in the chip is lined up with the
notch in the socket and all pins are properly inserted.
DUTY ROM CHIP REPLACEMENT
DUTY ROM CHIP REPLACEMENT
DUTY ROM CHIP REPLACEMENT
DUTY ROM CHIP REPLACEMENT
The Duty ROM Chip must be specific to the load chart
used in the machine. This chip contains a copy of the
load chart and must match the load chart in the machine.
1. Access the Main Computer Board. Refer to page 33
of this manual.
2. With the power off, remove IC3 (the Duty ROM Chip)
from its socket. Refer to General Chip Removal and
Installation (page 45) in this manual.
3. Install the new Duty ROM Chip into the socket. Make
certain the notch in the chip is lined up with the notch
in the socket and all pins are properly inserted.
NOTE: Replacement of the Executive or Duty ROM
Chip does NOT necessitate the re-calibration of the
system.
NOTE: Replacement of the Personality ROM Chip
does NOT necessitate re-calibration of the system
if the new Personality ROM Chip is an exact
duplicate of the original. If a copy of the Personality
Chip is not available the system will need to be
completely re-calibrated
.
COMPUTER BOARD REPLACEMENT
COMPUTER BOARD REPLACEMENT
COMPUTER BOARD REPLACEMENT
COMPUTER BOARD REPLACEMENT
1. With the power off, access the Computer Board.
Refer to page 33 of this manual.
2. Locate the two ribbon cables connecting the
Computer Board to the Termination Board.
3. The ribbon cables are held in place by two locking
tabs on each cable end. These locking tabs must be
pushed away from the cable to disconnect
the
cable.
As the locking tabs are pushed the
connector
will come loose from the Main
Computer Board.
