7.2.2
Display Board activates but switches are inactive.
Possible Causes
Solutions
A. Power Supply
See para 7.2.1 C
B. C.P.U. Board
See para 7.2.1.D
C. Display Board
If 7.2.2. A and B fail to correct problem replace
Display Board (Fig 1f)
7.2.3
Display Board Up(’) / Down(‘) keys operate properly, but on/off key
activation does not start the unit.
Possible Causes
Solution
A. Door switch cable connections
Locate power supply (Fig 1c). Check for
(Model 400, 120v)
loose or open connections to J3 (Fig 3a). If loose in
connector, press into connector to insure proper
contact. If the problem persists replace door switch
cable assembly.
10
Figure 1e
Figure 1f
Door Switch
Display Board
Pin 2
Pin 1
Pin 3
J2 Connector
Voltage Regulator (VRI)
Summary of Contents for ProMix 400
Page 1: ...REPAIR GUIDE MODEL 400 MODEL 401 MODEL 402 the ProMix AMALGAMATION UNIT...
Page 2: ......
Page 23: ...NOTES...
