REMOVAL AND REPLACEMENT OF PRINTED CIRCUIT BOARD.
Remove three screws which secure chassis end plate to mechan-
ical chassis and fan end plate away from l echanical chassis.
c. Remove five nuts and lockwashers which secure printed circuit
Printed circuit board assembly may now be
serviced without complete removal.
is necessary to completely remove the board,
proceed to step d below.
Unsolder and clearly tag all interconnecting leads from ter-
minals around the periphery of the board.
e. Remove printed circuit board and retain insulation material
to be used when board is replaced.
Replacement of the printed circuit board assembly is
essentially the reverse of the removal procedure.
Be sure all inter-
connecting leads are connected to the proper terminals on the board
and that the insulation material is placed between the board and
chassis end plate.
REMOVAL AND REPLACEMENT OF TOP PANEL.
Removal of the top panel provides access to remove, service, or
replace parts mounted on the tape transport mechanical chassis.
Remove top panel as follows:
Remove record head protective cover by removing two screws,
c. Remove capstan pressure roller by removing one screw, lock-
washer, and retaining plate, then lift pressure roller and two flat