T11033 - Boot-Up Problems: "Rx MGMT Key Only"
Contents
1. 970362 BIOSLAVE 6971055 Fig 22. OG AMBRO Gambro Renal Products Technical Assistance Services http tech usa gambro com 800 525 2623 303 232 6800 Technical Update PH TR 11033 6 2006 TROUBLESHOOTING Equipment Type Phoenix Dialysis System Subject Troubleshooting Boot Up Problems Rx MGMT Key Only From Gary Willis PURPOSE To provide Phoenix service technicians with guidelines for troubleshooting problems related to incomplete or incorrect boot up SYMPTOM After completing boot up the IDLE screen has only the Rx MGMT Action Key with the red Alarm Pictogram above it The Navigation Tabs are unresponsive to touch Typically there are no other visual or audible alarms See Fig 1 below CAUSE The Phoenix has booted up in a condition where the Carrier Main CCA circuit card assembly and program are not communicating with one or more of the Slave CCA s In this condition the main program halts locks up and softkeys and keypads become unresponsive Conditions that can result in these symptoms are l 2 Poorly seated Slave or Carrier CCA Data bus lines are physically interrupted preventing data from entering or leaving the Slave or Main CCA data bus Defective Slave or Carrier CCA Slave or Carrier CCA is unable to communicate correctly on the data bus Low 5 volt power supply Data communication is dependent on 5V pulses If the 5V power supply voltage falls too low data can become corrupted or lost causing the m
3. ain program to generate communication alarms or to halt lock up completely Defective Power Supply A faulty alarm signal from the power supply can disable normal communications from the slave and Main CCA s Defective Compact Flash A faulty compact flash or one with corrupted data files can interfere with normal communication between slave CCA s TROUBLESHOOTING 1 With the main power OFF reseat all CCA s correctly in the card cage and turn the main power ON 2 If present check that the 5VB 5VD Jumper 6977953 is correctly installed 3 With the main power ON identify the communication LED s on each card cage CCA and observe that they are flashing normally See Fig 2 below If necessary compare the LED s with another Phoenix machine that is in IDLE and that is functioning normally Replace any CCA whose communication LED is not flashing correctly Note If the Protective and Carrier CCA are the only boards where the communication LEDs are flashing measure the voltage at J2 1 PWFAIL on the Phoenix motherboard Normal voltage is TTL High 2 7V 5 0V If the voltage is TTL Low then only the Protective and Carrier CCA communication LEDs will flash but at a rate slower than normal Confirm the same measurement at the power supply by disconnecting power supply connector J6 and measuring pin 1 If the voltage is still TTL Low then replace the power supply 4 Measure and verify that the 5V power supply volta
4. ges are within the specifications indicated in Phoenix Service Manual Maintenance Section 8 Calibrations Power Supply Verifications 4 9V 5 3V Note If the voltage falls much below 4 95V random communication errors may begin to be observed If the voltage is lt 4 95V a Verify connectivity of the Phoenix motherboard main power connector J37 Methods of improving the connection i Install J37 Connector Locking Kit to stabilize connection P N 6975114 ii Apply electrical connection enhancer Stabilant 22 to connector pins P N 6975186 iii Install a 5VB 5VD Jumper 6977953 on machines with a transformer power supply iv Replace J37 connector P N 6976336 b Verify at the J37 connector that the unloaded voltages from the power supply J37 and J2 disconnected are relatively close to the voltage specifications in Phoenix Service Manual Maintenance Section 8 Calibrations Power Supply Verifications If not the power supply may need to be replaced Note No specific specifications are provided for unloaded power supply voltages However any voltage measurement that is significantly below it s loaded equivalent should be treated as suspicious 5 Replace the Compact Flash and confirm that the Rx MGMT SETUP and ADR keys are present after reboot If only the SETUP key is not present do an ADR Rinse and confirm that the SETUP key returns Rinsing Performed Correctly 06 45 pm 1027004 DLS BIOSLAVE 6
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