Leica OH4, Service Manual, Page: 172 / 264

Preparation for operation
30 Leica M525 OH4 / Ref. 10 714 367 / Version -
Intraoperative balancing
Warning 4
Danger of injury due to movement of the microscope
during the balancing process.
➩
Do not stand next to the microscope during the
balancing process.
Warning 5
Danger of injury due to swinging down of the
Leica M525 OH4 surgical microscope.
➩
Never balance or re-equip the instrument over the
field of operation.
➩
Balance the Leica M525 OH4 surgical microscope
after re-equipping it.
➩
Do not release the brakes when the instrument is in an
unbalanced state.
Intraoperative AC/BC balancing allows re-balancing during the
operation. Re-balancing may be necessary if, for instance, an
assistant's tube is adjusted.
Either axes A and C or B and C can be balanced.
For best results, it is recommended to balance axes A
and C before balancing axes B and C.
A/C balancing
If work is performed only in the horizontal microscope position,
re-balancing of the A/C axes may be sufficient.
➩
Press the "All Brakes" button on the CAN handle and move
the optical carrier into the A-position.
The mark (2) must be pointing towards A.
1
➩
Press the start button for automatic AC/BC balancing on the
swing arm.
During the balancing procedure, the push-button (2) on the con-
trol unit flashes green and an acoustic signal sounds.
The A-axis is balanced first, followed by the C-axis.
B/C balancing
If work is performed only in the upright microscope position, re-
balancing of the B/C axes may be sufficient.
➩
Press the "All Brakes" button on the CAN handle and move
the optical carrier into the B-position.
The mark (3) must be pointing towards B.
3
2