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3.
Remove the front-panel bezel by gently lifting it up and rotating it away
from the Display PCB as illustrated in Figure 6-9.
The display PCB is secured to the UIF PCB via the J5 connector. To
remove the Display PCB, the UIF PCB must first be loosened to allow
the Display PCB to be lifted out of the molded chassis housing slots.
J3
Control knob
ribbon cable
J3 connector
Display PCB
Figure 6-9: Display PCB and UIF Board Disassembly
4.
Using a Phillips-head screwdriver, remove the six screws securing the
UIF PCB to the chassis.
5.
Remove the Display PCB by lifting up on the mother board, then pulling
the Display PCB away from the UIF PCB and disconnecting from J5.
6.
Disconnect the control knob ribbon cable from J3 on the UIF PCB. Push
the top of the connector down, then pull the cable straight up and out of
the connector.
7.
Lift the UIF PCB out of the chassis housing.
8.
When replacing the UIF PCB, the Instrument Identification label must
be replaced. Attach the label to the enclosure on the bottom of the unit.
Reset the configuration code if required. Confirm the number using the
service mode menu item 17.
Section 6: Disassembly Guide
J5 connector
UIF PCB
Piezo power loss
alarm speaker
Lithium backup
battery
Speaker boost
lithium battery
Front panel bezel
6- 9
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Troubleshooting
