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5.2.2
Removing the PCBs and Display Assembly
2. Separate the front cover (16) from the rear battery cover by wedging a thin
flat-head screw driver between the covers at the base of the instrument and
slowly prying them apart.
Note: The covers are hinged at the top end in a different way; do not attempt to
separate the covers using this technique at the top of the instrument.
Once the covers are separated at the bottom end, lift away the bottom
end of the front cover first, allowing the tabs at the top end to act as a
hinge.
Tab #1
Tab #3
Flex #1
Flex #3
Figure 5-3: Main, Auxiliary, and Display PCB Assembly
Figure 5-3 shows how to remove the PCB assemblies.
1. Remove the On/Off button (6) from the main PCB.
2. Remove the entire PCB/Taliq display assembly from the rear battery cover
by tilting opposite the battery-check button (5).
3. Release connectors (11, 12, and 13) on the auxiliary PCB (26) and remove
the three flex display circuits.
4. Separate the auxiliary PCB from the main PCB (27) by pulling the PCB
headers apart at the base.
5. Remove the display assembly (18) from the main PCB by unsoldering the
four tabs that are physically bent around the main PCB. These tabs are bent
to ensure contact with the ground plane of the main PCB.
6. Using long-nose pliers, remove the metal shroud by untwisting the four tabs
(see Detail A and B).
18
Detail B
Tab #4
Tab #2
Flex #2
Detail A
27
11
12
13
26
Section 5: Disassembly Guide
6
5
5-3
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