Siemens SINUMERIK 828D Series Software And Hardware Service Manual page 199

3. Using a multimeter (set the measuring range to 1000 V DC) at the points DCP/DCN, check
that the DC link voltage is in a no-voltage condition. Only continue with the work when it
has been absolutely ensured that no voltage is present (no-voltage condition has been
established).
4. Withdraw the red 24 V jumper plug.
5. Release the Torx screws of the DC link.
6. Open the DC link busbars of the two modules.
7. Release the screws that are used to retain the module to the mounting plate.
8. Remove the protective conductor connection of the module.
9. Remove the module from the control cabinet.
Software and hardware
Service Manual, 08/2018, 6FC5397-5DP40-6BA1
Service cases - hardware
4.15 Active Line Modules
199