11. KEY PAD MEMBRANE REPLACEMENT
This procedure provides instructions for replacing the key pad membrane. Refer to Figure 7 (page 7) during this procedure.
1.Place the Site Master face up on a work sur- face.
2.Remove the four corner rubber bumpers (1).
3.Remove the four screws (PN
4.While holding the two halves of the Site Mas- ter together, turn it over and set it face down on the work surface.
CAUTION
In the next step, the PCB Assy (3) and test port panel (4) must stay with the front panel.
5.Remove the bottom half (5) and fold it over to lay upside down on the work surface.
6.Disconnect the red/black cable of the battery pack from the main PCB assembly connector J6 (6).
7.Remove the screw (10) located on the bottom side of the main PCB assembly next to the RF Bridge assembly .
8.Pull the PCB assemblies clear from the top half of the case.
9.Lift the keypad membrane clear from the keypad assembly.
10.Install a new membrane.
NOTE
Carefully use pliers to pull the rub- ber tabs tight to ensure that the membrane is flush with the PCB.
11.Reverse the above procedure to
12. LCD REPLACEMENT
This procedure provides instructions for replacing the Liquid Crystal Display (LCD). Refer to Figure 7 (page 7) during this procedure.
1.Place the Site Master face up on a work sur- face.
2.Remove the four corner rubber bumpers (1).
3.Remove the four screws (PN
4.While holding the two halves of the Site Master together, turn it over and set it face down on the work surface.
CAUTION
In the next step, the PCB Assy (3) and test port panel (4) must stay with the front panel.
5.Remove the bottom half (5) and fold it over to lay upside down on the work surface.
6.Disconnect the red/black cable of the battery pack from the main PCB assembly connector J6 (6).
7.Remove the screw (10) located on the bottom side of the main PCB assembly next to the RF Bridge assembly .
8.Pull the PCB assemblies clear from the top half of the case.
9.Remove the grey/brown cable of the LCD as- sembly from the main PCB assembly connec- tor J8.
10.Remove the four screws from the LCD PCB assembly.
11.Carefully remove the
12.Install the new LCD PCB assembly. Use thread locker on the LCD mounting screws.
13.Reverse the above procedure to
Site Master S820A MM | 9 |