User Manual

Disassembly
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual
7-19
7. While maintaining a firm grip on the pliers, carefully lift the squeeze handle
and gear out of the probe. See Figures 7--15 and 7--16.
8. To remove the current transformer, lift the assembly out of the probe as
shown in Figure 7-- 16 and unplug it from the circuit board.
Circuit board/cable assembly
Current transformer
Figure 7- 16: Removing the current transformer
9. To remove the circuit board and cable assembly, desolder the two leads to
the slide switch and lift the circuit board and cable clear.
NOTE. Observe the routing of the switch leads through the circuit board shield. It
is important that the leads be routed in the same way when the board is
replaced.
10. Before reassembling the probe, be sure that the gap between the stationary
and moveable core pieces is clean. If necessary, clean the core pieces using a
lint-free cloth and water or isopropyl alcohol (IPA). Also, clean the contacts
of the slide switch, if necessary.
11. Should the plastic slide assembly require lubrication, sparingly apply
silicone-based grease to the parts.
12. Probe reassembly is the reverse of steps 1 through 9. You may need to
squeeze the handle slightly to align the gear teeth with the slide rack.