| Symptom |
Possible Cause |
Corrective Action |
Alarm 552 TRIPPED CIRCUIT BREAKER (Version M PDIST PCBs only)
|
An overload condition on the coolant pump, chip conveyor, TSC coolant pump, or work light tripped one of the circuit breakers.
|
Check for a tripped breaker. Inspect the system connected to the tripped breaker. Correct the root cause of the overload condition and reset the breaker.
|
Alarm 552 TRIPPED CIRCUIT BREAKER
|
The circuit breaker jumper is missing. |
When the machine does not have TSC option there will be no circuit breaker installed on the PSUP PCB. Make sure the a jumper is installed. |
| The circuit breakers tabs are not seated correctly on the PSUP PCB. |
Make sure the all circuit breakers tabs are seated correctly on the PSUP PCB. |
(Single-phase machines only), Alarm 552 TRIPPED CIRCUIT BREAKER occurs when the coolant pump gets commanded to turn on.
Note: The circuit breaker did not trip.
|
The 240 VAC input cable connected to the PSUP at P10 is not correct.
|
Turn off the main breaker and disconnect 240 VAC input cable from the PSUP at P10 and swap the white and black wire positions on the cable.
|
None of the 120 VAC connectors have power.
The 120 VAC breaker did not trip.
|
There is a bad conenction from the main transformer 120 VAC output to the PDIST PCB.
|
Inspect the cables and connections at TB1 on the the main transformer, and at P1 on the PDIST PCB (or TB1 depending on the version of the PCB).
|
The 5/12-12 VDC LEDs cycle on and off and the machine does not boot up.
|
There is a shorted output from the Low Voltage Power Supply (LVPS).
|
Inspect the Low Voltage Power Supply (LVPS). Look for burnt or overheated components. Inspect the cable harness from the LVPS.
|
None of the 240 VAC output connectors have power (coolant pump, TSC, or chip conveyor).
The breaker did not trip.
|
There is a bad connection from the main transformer 240 VAC output to the PDIST PCB.
|
Inspect the cables and connections at TB2 on the main transformer and at P10 on the PDIST PCB (or TB3 depending on the version of the PCB).
|
The machine does not power-up.
The voltage at the main circuit breaker is correct.
|
There is a bad connection at the PDIST PCB ON/OFF circuit connectors.
|
Inspect the cables and connections for damamge.
|
Fuses F1 or F3 are blown.
|
An electrical surge caused an overvoltage condition.
|
Inspect diodes, MOVs, and inrush current limitors VR1-6 on the PDIST PCB for cracks and burn marks. If VR1-6 are not damaged, replace the blown fuse.
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The machine phase detect lights Pass and Fail are both lit.
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The machine is wired for single phase.
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This is normal for single phase power machines.
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