Electrical Trouble Shooting - DENTSPLY ProMix 400 Repair Manual

7.2.1
Display Board does not come on when main switch at the back of the unit is
turned on.
Possible Problem
A. Loose Lead Wires
B. Blown Fuse
Lead Wires
Figure 1a
Solution
Open unit and check for loose lead wire connections
between the A/C receptacle, main power switch Fig
(1a), and the power supply. See Fig 1b.
Check fuses. See Fig 1b. If open replace with the
same type fuse. See fuse rating section 1.1.
Power Supply
8
Fuses
Figure 1b