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A1 Main Board Removal
Removal Procedure
1. Remove the A2 CPU Board Assembly referring to \A2 CPU Board Assembly Removal".
2. Disconnect the following cable assemblies and wire assemblies from the A1 assembly.
a. The three cable assemblies marked \A", \B", and \C" which are connected to the
UNKNOWN connectors on the Front Panel
b. The wire assembly which is connected to the transformer
c. The two wire assemblies which are connected to the DC-DC Converter
3. Remove the nut which fasten the Ext Trigger connector to the rear panel.
4. Remove the four studs, that secure the A1 assembly to the chassis, by rotating them with a
at bladed screwdriver.
5. Remove the three screws that secure the A1 assembly to the chassis.
6. Remove the A1 assembly from the chassis by sliding the assembly toward forward before
lifting.
A2 CPU Board Assembly Removal
Removal Procedure
1. Remove the cover referring to \Cover Removal".
2. Disconnect the two
atcable assemblies and the wire assembly from the front side of the A2
assembly.
3. Disconnect the
atcable assembly, which is connected to the GPIB connector on the rear
panel, from the rear right side of the A2 assembly.
4. Remove the four screws that secure the A2 assembly to the stud.
5. Remove the
at cable assembly which is connected to the A1 main board assembly on the
bottom, while sliding the A2 assembly toward front.
6. Remove the A2 assembly from the chassis.
Note
The ROM and EEPROM on the A2 assembly may be transferred to the new
assembly to minimize the repair time and parts cost. Refer to \Replacing the
A2 CPU Board Assembly" for more information.
A5 AC Inlet Board Assembly Removal
Removal Procedure
1. Disconnect the cable assembly with the 4 pin connector from the A5 assembly.
2. Disconnect the cable assembly with the 3 pin connector from the A5 assembly.
3. Remove the screw which xes the green and yellow wire connected to the neutral terminal
of the power cable connector to the chassis bottom.
4. Remove the ve screws which secure the A5 assembly to the chassis, from the side.
5. Slide the A5 assembly toward the right to remove the switch on the A5 assembly from the
line switch plate slot.
3-10
Assembly Replacement
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