Remove top panel:
R e m o v e 15 machine screws, nuts, washers.
Disconnect fan motor plug.
Lift circuit card assembly straight up from socket.
Be careful not to break solder connections
when pulling the circuit card.
Insert circuit card into socket.
Be sure that the circuit card terminal points are
set all the way into the socket.
Replace retaining brackets, nuts,
REPAIRING CIRCUIT CARD ASSEMBLY PC101(A1) (figs. 1 and 2)
Adequate ventilation should be provided while using TRICHLOROTRIFLUOROETHANE. Pro-
longed breathing of vapor should be avoided. The solvent should not be used near heat or
open flame; the products of decomposition are toxic and irritating. Since TRICHLOROTRI-
FLUOROETHANE dissolves natural oils, prolonged contact with skin should be avoided.
When necessary, use gloves which the solvent cannot penetrate. If the solvent is taken
internally, consult a physician immediately.
Before starting repairs, remove protective coating EC1103 from the circuit card assembly:
I f this area is small, scrape off the protective coating with a knife or other sharp tool.
If this area is large, soak the circuit card in TRICHLOROTRIFLUOROETHANE to soften
the coating, then wipe the area clean with a lint-free cloth.