Corrective Maintenance
CSA 803C Service Manual 6Ć45
A12 Rear Panel Assembly
Removal and replacement steps are listed below.See Figures 6Ć2, 6Ć17 and
6Ć32 forconnector, screw, and index locations.
ăStep 1:ăRemove theconnectors from the RS Ć232ĆC, the GPIB, and the
PRINTERconnector holders.
ăStep 2:ăRemove the eight Torxhead screws from the outer edges of the
rear panel connector plate.
ăStep 3:ăTiltthe plate back from the instrument. Remove connector J78
from the top of the A12 Rear Panelassembly. Remove the grounding
wire. Note the position of the connector's index triangle to ensure that
the connector can be correctly replaced.
ăStep 4:ăRemove the rear panel connector plate and the attached A12
Rear PanelAssembly.
ăStep 5:ăRemove the following items from the rear panel plate:
two bail brackets, screws, and washers from the PRINTER connecĆ
tor
two posts from the GPIB connector
posts, lockwashers, and flat washers from the RSĆ232ĆC connecĆ
tor(s)
Torxhead screw and washer (at lower left, if present)
ăStep 6:ăRemove the A12 Rear PanelAssembly from the rear panel
connectorplate.
CAUTION
The metal covers on the PRINTER and on the GPIB connectors are
loose. If the board is inverted, these covers will fall off.
Toreplace the A12 Rear Panel assembly, perform the previous steps in
reverseorder.
NOTE
Replacement of connector J78 will be simplified if you replace the
connector before reinstalling the rear panel connector plate on the
rear of the chassis.