| Models till 1993 |
| 1. To remove clamps and to unscrew three screws of fastening of a frame of glass. |
| 2. To unscrew screws and to uncover a back part of a combination of devices. |
| Models since 1993 |
|
3. To unscrew two screws (are specified by shooters) fastenings of a frame of glass. |
|
4. To unscrew two screws (are specified by an arrow) fastenings of glass of a combination of devices. |
| 5. To remove clamps of glass and glass. |
|
6. To unscrew screws and to uncover a back part of a combination of devices. |
|
7. To unscrew nuts (are specified by shooters) fastenings of contacts of devices. |
|
8. To unscrew screws (are specified by an arrow) fastenings of measuring devices. |
|
9. To remove measuring devices. |
| 10. To remove control bulbs, turning the holder of a bulb counterclockwise. |
