Manual 0463 413 001 TROUBLESHOOTING 6-17
6.05 Initial Power Up Test Problems
1) Mains Power fuses blow/ breaker trips when SW1 is turned on.
a) Faulty Mains Power Cable and/or Plug
Check continuity – Replace if faulty
b) Shorted BR1 or BR2 rectifiers.
Check continuity- See sub-section 6.02 BR1/ BR2.
c) Shorted components on MAIN POWER PCB2.
Replace
2) Unit is completely inactive, Front panel display is o, no output voltage.
a) Mains Power problem. Open fuse/ tripped breaker
Measure voltage at mains outlet.
b) Defective MAINS POWER CABLE /PLUG
Measure voltage to SW1. Replace if defective.
c) Defective SW1 ON/OFF SWITCH
Measure voltage from SW1. Replace if defective.
d) CB1 Circuit Breaker Tripped.
Reset breaker. Replace if defective.
e) Defective POWER PCB2
Perform POWER PCB2 Test, see subsection 6.06
f) Defective CONTROL PCB3
Perform POWER PCB2 Test, see subsection 6.06
g) Defective USER INTERFACE PCB1
Check for LED D44 UI COM on CONTROL PCB3.
If D44 is OFF then replace USER INTERFACE PCB1
h) Defective connection from CN6 on PCB3 to CN3 on PCB1.
Check continuity
If no problem is found, replace CONTROL PCB3
To Next Page
Loading...
