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Model 3320A/B
GENERAL MAINTENANCE INFORMATION
Section V
MP60
MP55, MP58 - 2 each,
NOTE
MP54. MP55. MP59 and MP61 Readout Disks
have cams mounted on them. Do not loosen the
Allen screws on the cams.
",l,
Step C
Remove Readout Disks
MP59 - 3 each, MP60).
Remove the six screws holding the front panel to the AI3
Switch Assembly. Unsolder decimal indicator wires (Note
wire colors and destinations).
<
•
'
.
•
•
: :
. .
Remove the ribbon cable from the A13 Switch Assembly
and remove the front panel.
5-53.
Front Panel Disassembly.
5-54. The following procedure provides information for
disassembling the 3320A/B front panel. This will allow
replacement of the switch wafers on the AI3 Switch
Assembly. On earlier 3320A/B instruments the switch
wafers were not replaceable. Refer to the backdating
Section
VIII for serial number breakdown for the earlier
in~truments.
Step A
StepD
---".,
Remove front panel knobs and leveling switch.
Step B
Step D
•
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)
't
•
•
..,
.--
•
M P 1 9 /
Remove mounting nuts holding AI3 Switch Assembly to
MPI9.
5-15
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