Use spare part: https://dhd.audio/product/zy5810-kpkit/

• Flat bladed precision screwdriver
• Torx 6
• Torx 8
• Special-Tool included in the ZY5810-KPKIT

• Remove the Encoder Cap with a flat bladed precision screwdriver.

* Use Special-Tool included in the ZY5810-KPKIT

For reassembling:

• there must be space between the encoder and the console for good rotation

• pull off the marked encoder knobs
• unscrew the marked screws
• Screw: 6 pcs countersunk M2,5×8,
• Tool: Torx T8
  

• Unfold the fader panel carefully to avoid force on the cables
  
• Disconnect the marked cables

• Put the frontpanel next to the console to continue

• Disconnect the marked cables as described below

For reassembling:

• Connect the cable with the S-label next to the loudspeaker
• Connect the cable with the E-label next to the ribbon cable
  

• Use a flat bladed precision screwdriver to lift up the connector carefully

• Disconnect the marked cable as described below
  

• Disconnect the loudspeaker
• Use a flat bladed precision screwdriver to unlock the connection clamp

• Unscrew the red marked screw
• Open the marked clamps to unlock the Controller-PCB
• Lift the Controller-PCB about 30° and pull it out of the socked

• Push the clamps and pull the cable out of the socked

• open the clamps and pull the cable out of the socked

• Unscrew the red marked screws
• Lift up the small sub-PCB the get access to the screws below it.
• Screw: 5 pcs lens screw M2,5×5
• Tool: Torx T8

• Unscrew the red marked screws
• Screw: 14 pcs lens screw M2,5×5
• Tool: Torx T8
• Unscrew the pink marked screws
• Screw: 4 pcs lens screw M2x3
• Tool: Torx T6

• Remove the PCB from the fader panel
• Take off the plastic frames of the framed buttons
• Exchange the keypads
• Make sure the bottom of the keypad is clean

• Pull the rubber pins through the drill holes to fix the Keypads