Maintenance
Disassembly and Reassembly 5
5-11
hpn375.eps
Figure 5-4. Removing the Front Panel Assembly
Display and Keypad PCA
To remove the Display and Keypad PCA:
1. Remove the Front Panel Assembly from the Product.
2. Remove the Spin Wheel. There are 2 holes in the bezel molding, visible from
the inside face. These holes allow for using a thin screw driver shaft to push
the Spin Wheel molding from the encoder shaft.
3. Remove the retaining nut and washer.
4. Lay the front panel face down on an antistatic surface and disconnect the
cable from the backlight PCA. The PCA is extremely thin, use care during the
removal process.
5. Remove the four outer self-tapping screws from the metal display support
bracket and lift it out, taking care not to scratch the display or window.
6. Remove the two USB pca fixing screws, unplug and lift out.
7. Remove the seven self-tapping screws securing the Keypad PCA to the front
panel. Lift out the Keypad PCA and spin wheel device. Note the bottom edge
of the Keypad PCA locates to the front panel. Use a slight forward pressure
to remove the PCA.
8. Lift out the rubber keypads.
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