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Tools and Materials Needed
1. 107 TLC Mk3 Faceplate with Electronics (#113235)
2. Phillips or Robertson Screwdriver
3. Wire Cutters
4. Pliers
Instructions
1. Place the reel on a flat workbench with the faceplate up.
Make sure the TLC Meter is turned off. Remove the battery.
2. Undo the three screws from the faceplate, and slowly
remove it from the reel.
3. If this is an Mk2 TLC Meter, disconnect the Molex connector
that connects the circuit board to the tape. If this is an Mk3
TLC Meter, press down on the white terminals of the push-
release fittings on the circuit board and pull out to remove
the tape leads.
Molex
Connector
Back of the Model 107 TLC Mk2 Faceplate
Back of the Model 107 TLC Mk3 Faceplate
(Page 1 of 2)
TLC Meter Faceplate with Electronics Replacement
Push-release
Fittings
High Quality Groundwater and Surface Water Monitoring Instrumentation
Model 107 TLC Mk3 Faceplate with Electronics
4. Connect the tape to the new faceplate circuit board assembly:
a)
If this is a Mk3 TLC Meter, press down on the white
terminals on the circuit board and insert the tape leads.
Release the terminals and the leads should be secured.
The lead on the bottom of the tape is inserted into the
terminal labelled BOT on the circuit board, and the top
lead into the terminal labelled TOP (see note).
Note: There is a "P" etched on the tape to help denote the
proper orientation of the tape – top and bottom leads.
"P"
Top
Bottom
b)
If this is an Mk2 TLC Meter, with a Molex connector on
the tape leads, remove the Molex connector by pushing
out the two pins. Cut each pin in half (see image below
for correct location). Use pliers to flatten the remainder
of the pins against the tape lead, so it fits easily into the
terminals on the circuit board. Connect each tape lead
to the new circuit board assembly, as described above
in step a.
Remove the Pins from the Tape Molex Connector
Cut the Pins on Each Tape Lead in Half (as shown)
Model 107 Mk2 & Mk3
Molex
Connector
(Mk2)
Continued overleaf...
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