A320 ESPM Electrical Standard Practices Manual 3(64)

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 (a) Release the head (Ref. para. 2.D.(1)(a))
 (b) Replace the lamp - Turn the head of the pushbutton switch to get access to the lamps. - Remove the lamp from its housing and install a new lamp. - Install the head (Ref. para. 2.E.(3)).
 (3) Remove the body from the mouting can (mounting sleeve and mounting base assembly). (Ref. Fig. 002, 003)
 (a) Remove the head (Ref. para. 2.D.(1)).
 (b) Remove the body. - Insert the tool OUT75 in the body with the slots in line with the locking cam screws. - Insert the screwdriver (no specific) in the slots and turn the screws counter-clockwise approximately half a turn to retract the locking cams. Remove the screwdriver and the tool OUT75. - Press the blades of the tool OUT74 or OUT86 and insert the blades in the body until the two stops (one on each side of the tool) touch the body. - Release the pressure on the blades (the tool studs engage in the holes of the body). - Pull the handle of the tool in the direction of the arrow F2 to extract the body from the mounting can. - Press the blades to remove the tool from the body.

 

 Illuminated Pushbutton Switch - Removal of Body from Mounting Can
 NSA933672 to 677 and NSA933681 to 683
 Figure 003

 

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 (4) Remove the mounting sleeve (NSA933668 or NSA933669) (Ref. Fig. 004)
 ____NOTE : This procedure is only possible when the panel (VU) is open.
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 -
Remove the pushbutton switch (Ref. para. 2.D.(1) and (3)).

 -
Remove the spacer or the guard.

 -Slide the mounting sleeve in the direction of the arrow F1.
 -Press the sides of the mounting base to remove the mounting can from the panel cutout.
 E. Installation
 (1) Installation of the mounting sleeve (NSA933668 or NSA933669) on the panel. (Ref. Fig. 004)
 ____NOTE : This procedure is only possible when the panel (VU) is open.
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 -Make sure that the sleeve is in the correct direction for the thickness of the panel.
 -
For a panel thickness between 1.5 and 4.5 mm, end A on the panel
 side.

 -
For a panel thickness between 6.7 and 9.7 mm, end B on the panel
 side.
 If necessary, slide the sleeve in the direction of the arrow F1,
 remove the sleeve and then install it again with the opposite end
 on the panel side.

 

 -If necessary, connect the wire to the connector on the mounting base.
 -Slide the sleeve in the direction of the arrow F1 (away from the panel) but do not remove the sleeve from the mounting base.
 -
Press the mounting base sides and engage the mounting base in the panel cutout.

 -
Press the mounting base sides and install the spacer or guard.

 -Insert the tool OUT70 from the front of the panel to hold the mounting can in the panel.
 -Push the sleeve against the panel. The locking system holds the mounting can in position.
 (2) Installation of the body in the mounting can
 (Ref. Fig. 005)

 -
Make sure that the mounting can is in position in the panel cutout.

 -
Make sure that the spacer or the guard is in position on the mounting can.

 

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 Illuminated Pushbutton Switch - Removal/Installation of Mounting Sleeve
 NSA933668 and NSA933669
 Figure 004

 

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 Illuminated Pushbutton Switch - Installation of Body in Mounting Can
 NSA933672 to 677 and NSA933681 to 683
 Figure 005

 

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 -Make sure that the polarization code on the body agrees with that
 on the mounting can. --------------------------------------------------------------------------| NSA | INDICATOR LIGHT OR | ECE | POLARIZATION CODE | | P/N | P/BSW TYPE | P/N | | |---------------|----------------------|-----------|---------------------| | NSA933672 | Indicator light | 104VK | A | | NSA933673 | Momentary action | 114VK | B | | NSA933674 | Alternate action | 124VK | C | | NSA933676 | Flow bar | 124VK (M) | F | | NSA933677 | Magnetic latch | 154VK | D | --------------------------------------------------------------------------
(a) Remove the head
 -Insert the blade of the tool OUT83 in the space between the body and the head, on the side with yellow band.
 -Push the tool in the direction of the arrow until the handle touches the body. The head comes out by approximately 2 mm (0.0787 in.).
 -Remove the tool OUT83 and pull out the head by hand. The head remains attached to the body.
 -Insert the screwdriver blade between the body and the retainer.
 -Lift the retainer slightly in the direction of the arrow until it comes out.
　
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