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crwdns2936071:01crwdne2936071:0 — Please remove the case of the electrical tester
The case is made of flexible silicone and can be easily peeled off.
crwdns2936071:02crwdne2936071:0 — Loosen the 2 screws on the back.
Loosen (remove) the two screws on the back by installing the J1 (JIS1) standard screwdriver bit of the ifixit pro tech toolkit.
crwdns2936071:03crwdne2936071:0 — Open the rear panel by lifting only the lower part
At first, there is a latch on the upper part, so only the lower part is lifted as much as it is lifted without force.
crwdns2936071:04crwdne2936071:0 — intermediate internal cleanup
This step is inserted in the middle to show the internal structure
crwdns2936071:05crwdne2936071:0 — Remove the battery
Disconnect the 9V battery from the device.
crwdns2936071:06crwdne2936071:0 — To remove the motherboard, loosen the 4 screws.
Remove (unscrew) only the screws shown in the picture
crwdns2936071:07crwdne2936071:0 — internal structure
A = operation mode selection switch (inner connect)
crwdns2936071:08crwdne2936071:0 — internal structure
A' = Lubricated Steel Beads
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