Carl Valentin DPM IV, Service Instructions Manual

Page: 24 / 96

Electronics (Replace Components) DPM IV
24 Service Instructions 05.19
4.7 HMI Components
A
F
M L
I
K J
B
E
H
D C G
Figure 12
1. Unplug the control unit from the electrical outlet.
2. Unscrew the four screws on the rear and remove the front plate
(B) (see chapter 4.1, page 17). Disconnect all connecting cables
at the plug-in connectors while removing the front plate.
NOTICE!
During subsequent work, take care of a dust-free atmosphere in
order to bring no unwanted particles in the field of view of the
display.
3. Carefully remove the FFC cable (E) from the plug-in connector of
the CPU HMI (L).
4. Carefully remove the connection line (H) of touch panel from the
plug-in connector of CPU HMI (L).
5. After removing the connection cable to CPU and removing the
four screws (M), remove the CPU HMI (L).
6. Remove the six screws (J).
7. Lift the top display bar (K) and the bottom display bar (I).
8. Remove the graphic module (A) and the seal (F) from the
depression.
9. The touch panel (G) laminated onto the transparent keyboard is
visible now. The touch panel is interchangeable only in
combination with the transparent keyboard.
10. After careful loosening of the connecting cable (C) and removing
the screws positioned directly next to the cable, remove the
connection board (D) for the transparent keyboard.
Removing HMI
components