e-survey ET2A, Maintenance Manual

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SHANGHAI ESURVEY GNSS CO., LTD.
I
Contents
1 Before You Start ......................................................................................................... 1
1.1 Precautions for Safe Operation .......................................................................... 1
1.1.1 Caution ........................................................................................................... 2
1.1.
2
Warning .......................................................................................................... 3
1.1.
3
Danger............................................................................................................ 3
1.2 Disclaimer .............................................................................................................. 3
2 ET2A at a Glance ........................................................................................................ 4
2.1 Important Parts ...................................................................................................... 4
2.2 Operation Panel ..................................................................................................... 5
3 Disassembling ............................................................................................................ 6
3.1 Disassemble the Left Cover .................................................................................. 6
3.2 Disassemble the Mainboard .................................................................................. 8
3.3 Disassemble the Vertical Circle ............................................................................. 9
3.4 Disassemble the Right Cover .............................................................................. 10
3.5 Disassemble the Vertical Tangent Screw ............................................................ 12
3.6 Disassemble the Display ..................................................................................... 13
3.7 Disassemble the LCD Module ............................................................................. 13
3.8 Disassemble the Plate Level ............................................................................... 14
3.9 Disassemble the Horizontal Tangent Screw ........................................................ 15
4 Assembling ............................................................................................................... 15
5 Check and Adjustment ............................................................................................. 16
5.1 Check and Adjust the Plate Level ........................................................................ 16
5.2 Check and Adjust the Circular Level .................................................................... 16
5.3 Check and Adjust the Optical Sight ..................................................................... 17
5.4 Check and Adjust the Laser Plummet ................................................................. 17
5.5 Check and Adjust the Vertical Line of the Reticle ................................................ 18
5.6 Check and Adjust the Line-of-Sight Error or Collimation Error ............................ 19
5.7 Check and Adjust the Vertical Index Error ........................................................... 20
5.8 Check and Adjust the Linearity of the Compensator ............................................ 21
5.9 Check and Adjust the Coinciding of the Laser Spot and Target Center ............... 23
6 Troubleshooting ....................................................................................................... 24
6.1 Failed to Power on the Instrument ....................................................................... 24
6.2 The Instrument Automatically Powered Off ......................................................... 24
6.3 Unstable Horizontal Angle ................................................................................... 25
6.4 Unstable Vertical Angle ....................................................................................... 25
6.5 Character TILT Shows ......................................................................................... 26
6.6 Serious Error in the Horizontal Angle .................................................................. 26