Case 1:

Medical device:

 

Make: Hewlett-Packard
Figure 1: This image show a HP CodeMaster XL+ defibrillator from the front control panel.
Model: CodeMaster XL+
Serial Number: US00010863-Demo
Applied part type: CF
Certified by: UL & CSA

Device problem:

The performance test shows the defibrillator is not charging properly. Before taking any steps of repair or troubleshooting, it is recommended to Localize the fault in the assembly level by take the following steps while using the HP_CodeMaster XL+ service manual as a reference guide.

Step 1: Turn OFF the defibrillator.

Step 2: Move the “Energy Select” Knob from “Off (Standby)” to “Monitor On” while Pressing and holding the “HR Alarm” and “Syns” keys simultaneously. (figure 2)

Figure 2: This image shows the front control panel of the HP_CodeMaster_XL+ defibrillator

Step 3: From the following diagnostic menu (figure 3) select the PRINT LOG test.

 

Figure 3: This image shows the Setup/Diagnostic menu.

Step 4: Select the “PRINT LOG” from the menu. Print the error log to see if it contains an error code.

Figure 4: This image shows a System Log print out. The Error Code is indicated in this image.
Figure 5: This image shows the details information of the System Log print out

The system log shows the ERROR CODE “001”.

Step 5: Check the troubleshooting table of service manual for the “ERROR COD 001”, the manufacturer recommended possible solutions that would be replacing either the high voltage board, control board, or HV capacitor.

 

Table 1: Error Codes troubleshooting table
Error Code Error Description Possible Solution
001 The HV capacitor charges at less than 6 joule/second 1-  Replace high voltage board

2-  Replace control board

3-  Replace HV capacitor

 

Step 6: Turn off the defibrillator, remove the AC power cord and battery. Disassemble the device for replacing the high voltage board. Use the service manual for disassembling the parts.

Table 2: Disassembly steps
Figure 6-A shows that the main top cover of the defibrillator’s enclosure is removed. The CRT module, High Voltage board, SPO2 board and High Voltage capacitor are visible.
Figure 6 -A
Figure 6-B shows, the CRT module and SPO2 board are removed from the assembly.
Figure 6-B
Figure 6-C shows, the faulty high voltage board that is removed from the assembly
Figure 6-C

Step 7: replace the new high voltage board, assemble the defibrillator back into the original setup by using the service manual. Then run the diagnostic/performance test to validate the device.

License

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Biomedical Instrument Troubleshooting Copyright © by Brendan Chapman, Soheil Ghoreyshi, Centennial College is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.

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