Tektronix TCPA300 SERIES, Instruction Manual

Page: 178 / 205

Disassembly
7- 20
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual
10. To remove the cable, do step 9 and then unsolder the two switch wires.
Unsolder switch
wires
Unsolder switch
wires
Disconnect cable
TCP303
TCP404XL
Cut cable tie. (Before tightening new cable tie, check
for enough cable lead length when seated in case)
Figure 7- 17: Removing the circuit board and cable
The circuit board and cable are replaced as an assembly on TCP404XL probes.
11. Observe the routing of the switch leads through the circuit board shield. It is
important that you route the leads in the same way when you replace the
assembly. Desolder the two leads from the slide switch as shown in
Figure 7--17 and lift the circuit board and cable clear.
Reassemble the probe by doing the following:
12.
Before reassembling the probe, be sure to clean the gap between the
stationary and moveable core pieces. 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.
13.
Should the plastic slide assembly require lubrication, sparingly apply
silicone-based grease to the parts.
14. Probe reassembly is the reverse of steps 1 through 10 or 11, depending on
the probe model and what you are replacing. You may need to squeeze the
handle slightly to align the gear teeth with the slide rack.
Removing the Circuit
Board and Cable
Assembly (TCP404XL)
Reassembling the Probe