AEMC 1000N Calibration Manual page 16

MODEL 1000N
I) Reassembling the Printed Circuit Boards:
• In order to reassemble the printed boards, complete the previously described procedures in
reverse, but do not tighten the screws completely. Slide the rod into the selector switch
opening to ensure proper alignment of the boards. The rod must be able to turn freely without
being obstructed. Then you can tighten all the screws.
J) Removing the High Voltage Switch:
• The high voltage button must be locked into a lower position.
• Position the bottom board so that the circuits face upward.
• Use the desoldering iron to undo the eight solder points between the high voltage switch and
the bottom board.
• Turn the bottom board over and perform the same procedures described in Section H.
• During reassembly, the same procedure should be done in reverse order.
K) Reinstalling the Printed Circuit Assembly:
• The push-to-test button should be engaged.
• With the panel turned forward, place the printed circuit boards beside it. The bottom board
should face up.
• Be sure the LED is perpendicular to the printed circuit boards.
• Resolder the two galvanometers. The red wire should be connected to the positive terminal
and the green wire to the negative terminal.
• Place the printed circuit board assembly into the panel without pushing it in entirely.
• Resolder the wire for the negative terminal (white) to the bottom board, along with the
respective ground wire (yellow). Then resolder the guard terminal wire (red).
• Fully secure the bottom board with the three Philips screws and the center screw.
• Resolder the last wire (white Teflon) to the positive terminal (green).
4/21/2005
REPAIR AND CALIBRATION MANUAL
16
REV. 7: March 13, 2004
FILE LOCATION: Manuals - Cal. Man - 1000MAN.DOC
CAT. #185.100