Replacing The Membrane Keypad / Nec 2 Display / Radio Module - Seca 6641321108 Service Manual

Replacement Instructions
seca 684, 685

2.2 Replacing the membrane keypad / NEC 2 display / radio module

 To replace the membrane keypad (U), NEC2 display (V) or radio module (W) you
need to undo the four screw connections (T, Fig. 9) at the bottom of the operating and
display unit first.
 Now carefully lift the printed operating and display unit (A1, Fig. 9).
The plug-in connector (X) connects the membrane keyboard (U) with the NEC2
display (V).
Carefully detach this connection! You can now take off the printed operating and
display unit (A1, Fig. 9).
 The membrane keyboard (U) is glued in place and must be replaced with a new one.
 Detach the plug-in connections between the modular cable and the NEC2 display
(S1).
Unsolder the battery/accumulator battery connections (C1), if applicable.
Unscrew the NEC2 display from the board holder (D1, Fig. 9)
and remove the NEC2 display.
 Unscrew the screw (B1, Fig. 9), if fitted, which connects the radio module (W) and the
NEC2 display (V) and carefully remove the module.
 Proceed in the reverse order for reassembling.
When aligning the display components refer to cabling diagram 08-02-06-058.
U
Figure 8: Detail from cabling diagram 08-02-06-058, NEC2 display/radio module/membrane keypad
13.02.13/MRE
X
S1
9
W
V
C1
30-34-00-860_E1