SHANGHAI ESURVEY GNSS CO., LTD.
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To disassemble the mainboard, do the following:
1. Use tweezers to remove the connectors J1, J2, J3, J4, J5, J8 and J9 on the front from
the mainboard.
It is suggested to make a mark for different connection before removing the
connections.
During this process, please be mindful of electrostatic protection.
2. Loosen four cross recessed pan head screws (M2.5X5) that fix the mainboard.
3. Use tweezers to remove the connectors J6, J7, POWER and RS232 on the back from
the mainboard, and remove the mainboard.
3.3
Disassemble the Vertical Circle
You can clean the vertical circle with alcohol and cotton swabs.
To disassemble the vertical circle, do the following:
1. Loosen two cross recessed pan head screws (M2X16) that fix the cover:
2. Remove the cover:
