Sony DSR-1800 Service Manual page 211

6. Wait until display changes and the menu appears as shown in
the right.
7. Set the DV torque cassette and place a weight of about 300 g
on it. Press the [STOP] key.
8. Keep pressing the [(], [)] keys until the DV torque cassette
reading agrees with the specification value on display.
9. When adjustment is completed, press the [*] key.
DSR-1800/P/1600/P
5-3. Contents of Maintenance Menu
Specification is as indicated on the display.
5-3-4. Servo Adjust
5-27