Midmark 630 - Page 14

English-14
004-1055-00
TP210 Rev. A
© 2013 Midmark Corp. | 60 Vista Drive Versailles, OH 45380 USA | 1-800-643-6275 | 1-937-526-3662 |
[Revised: 6/7/16]
Troubleshooting Chart - continued
Problem Symptom Probable Cause Check Solution
Rotational Base
Brake System not
operating properly.
Rotational brake will not lock. Brake pedal switch(s). Unplug table power cord.
If base rotation locks, check brake pedal switch(s).
Replace sticking brake pedal switch(s).
Refer to: Brake Pedal Switch Access.
Rotational brake mechanism Unplug table power cord.
If base rotation does not lock, check mechanical
brake components for any obstruction.
Clean mechanical brake components and
remove any obstruction. Refer to: Brake,
Electro-magnet, Rotation Bearing Access.
Rotational brake will not unlock. Loose wire connections. Wire connections at J12 on Machine Control
PC Board and at switch.
Secure wire connections.
Check Red and Black wire connections at J4
on Power Supply PC Board.
Secure wire connections.
Electro-magnet not energized. If neither brake pedal works:
Perform Screwdriver Test.
Refer to: Screwdriver Test.
Brake pedal switch(s) If one Brake Pedal Switch works: Test switch. Replace switch.
Refer to: Brake Pedal Switch Access.
If neither pedal works. Refer to: Rotational Brake PCB Input Test.
PC Board Test Power Supply PC Board.
Refer to: Rotational Brake PCB Input Test.
If necessary, replace Power Supply
PC Board.
Base wobbles when locked.
- and/or -
Grinding noise when base rotates.
Debris between upper & lower castings. Inspect between upper and lower castings
for debris.
Remove debris.
Loose hub screws Check the four screws securing the
upper & lower castings.
Tighten Hub Screws.
Damaged rotation bearings and/or brake
disc.
Inspect rotation bearings and brake disc.
Refer to: Brake, Electro-magnet Access.
Replace rotational base assembly.
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Style A