Discovery MR750 3.0T System Service Methods
5690009-2EN Revision 4
Object ID: 00000018WIA30431E20GYZ
Topic ID: id_13106127 Version: 5.0
Date: Feb 21, 2021 9:07:38 PM

Universal Power Monitor (UPM) troubleshooting

Topic ID: id_SL5412623-1058080

Overview

Each system contains two (redundant) UPMs, where UPM refers to one RF processor board working in conjunction with one RF detector board (standard narrow band configuration) or two RF detector boards (system with the MNS option).

These UPMs are identical and boards can be swapped to help with troubleshooting. See UPM board swap procedure for details.

Figure 1. UPM 1 and UPM 2 in CAM (single drive with MNS option)

Figure 2. UPM 1 and UPM 2 in CAM (dual drive with MNS option)

Figure 3. UPM 1 and UPM 2 in KASC with ICE (Dual Drive with MNS Option)

Note:

On the RF detector board(s), each unused RF port must be loaded with a 50 ohm SMB terminator. If the MNS Option is not installed, the MNS RF ports will instead be terminated with a 50 ohm SMB terminator.

Table 1. RF Processor and detector board LEDs
LED Name	Description
Sense	If ON, the RF detector board is detecting RF input signal into one of the three ports on that channel. If OFF, no signal is detected on that channel.
1.5 V	If ON, the processor board indicates it is receiving 3.3 V from the CAM/KASC power supply and generating 1.5 V. Check for voltage at 3.3 V test points on front of CAM/KASC.
CAN Power	If ON, 24 V from the driver module CAN power supply is detected. This voltage is provided through the CAN backplane connection. This LED can be ON even if the UPM is powered down.
CAN Status	If the CAN status blinks once, then the processor board is attempting to communicate with the MGD host. If the LED blinks twice, then the processor board is communicating with the MGD host. If LED remains OFF, then the processor board is not attempting communication with the host.
Inhibit	If ON, the UPM has detected a disconnected FWD, REF 1, or REF 2 cable or system unblank signal interrupted, as result of a hardware failure or other unsafe condition, and scanning is inhibited. The LED will remain ON until the fault is cleared. Check the error log for fault details. For excessive power faults, the LED will clear once the power level is less than 99% of the trip limit.

The detector board measures forward power, reflected power, and hybrid body reflected power, if installed. All RF detector boards in a system are identical. For systems with the MNS option, there are four RF detector boards (two boards for each UPM). For systems with the dual-drive RF or MNS option there are four RF detector boards (two boards for each UPM). Systems with the single-drive RF option and without the MNS option have only two RF detector boards. Each board has two channels and each channel has one to three RF input ports. See details in Table 2

Table 2. RF detector boards single drive
Detector Board Ports	Narrow Band RF Detector Port Usage	Broadband RF Port Usage (MNS Option)
Channel 1 FWD	Body Forward	Not used
Channel 1 REF 1	Body Reflected	Not used
Channel 1 REF 2	Body Quad Hybrid Reflected	Not used
Channel 2 FWD	Head Forward	MNS Forward (optional)
Channel 2 REF 1	Head Quad Hybrid Reflected	MNS Reflected (optional)
Channel 2 REF 2	Not used	Not used

Table 3. RF detector boards dual drive
Detector Board Ports	Narrow Band RF Detector Port Usage	Broadband RF Port Usage (MNS Option)
Channel 1 FWD	Body Forward	Body Forward
Channel 1 REF 1	Body Reflected	Body Reflected
Channel 1 REF 2	Not used	Not used
Channel 2 FWD	Head Forward	MNS Forward (optional)
Channel 2 REF 1	Head Quad Hybrid Reflected	MNS Reflected (optional)
Channel 2 REF 2	Not used	Not used

On the front panel of the CAM/KASC chassis, the power supply provides 3.3 V, 5.0 V, +12 V and -12 V to the processor and detector boards. The ASC reset button resets both UPMs; however, any measured RF power from the scanner is NOT reset. The voltage banana jacks are for checks of the power supply for the entire CAM/KASC.

The following reference documents can assist with troubleshooting the UPM:

FRU manual
Interactive Block Diagrams
UPM Calibration and UPM Functional Check–Body Mode
UPM Calibration and UPM Functional Check–Head Mode
For systems with the MNS option:
- UPM - MNS Setup and Calibration
- UPM – MNS Functional Check

Topic ID: id_SL1909472-1058080

Diagnostics for UPM

UPM diagnostics are accessed from the Common Service Desktop (CSD) UPM Diagnostics.

Topic ID: id_SL219641-1058080

UPM calibration

The UPM calibration runs an APB cal scan and adjusts digital attenuators internal to the UPM to match the expected RF signal level (see UPM Calibration and UPM Functional Check–Body Mode and UPM Calibration and UPM Functional Check–Head Mode).

The UPM calibration parameters found in the UPM configuration file (/export/home/signa/tools/upm/upm.config) are used in the calibration/functional check tasks. This configuration file is accessible from the UPM Calibration tool, by selecting File > View Config. These values can be used during troubleshooting to help determine where the power monitor is tripping (if at all).

The UPM configuration file contains the default configuration values for all of the UPM parameters. The values displayed below are for reference only, because the content and values differ depending on system type.

Although this screen is called UPM Config Editor, the displayed values cannot be changed; they can only be viewed.

Figure 4. UPM configuration editor (example)

The final UPM digital attenuator values are written to the UPM calibration configuration files (Upm1Cal.cfg, Upm2Cal.cfg) located in directory /w/config. The contents of Upm1Cal.cfg and Upm2Cal.cfg are 12 hexadecimal attenuation values listed in single column order and identified as follows:

Note: The Shell window can only be launched when the EA3 user is included in the authorized EA3 group. Users not in this EA3 group will not have access to launch the Shell window. If you are not logged on as the proper logon user, log out and then log back on as the correct EA3 user with the authorized permissions.

Head FORWARD Power
Head REFLECTED Power
Head Quad Hybrid Reflected Power (unused)
Body FORWARD Power
Body REFLECTED Power
Body Quad Hybrid Reflected Power
MNS FORWARD Power (if installed)
MNS REFLECTED Power (if installed)
MNS Quad Hybrid Reflected Power (not used)
Body Channel 2 FORWARD Power (not used in single-drive RF systems)
Body Channel 2 REFLECTED Power (not used in single-drive RF systems)
CW Quad Hybrid Reflected Power (not used)

Topic ID: id_SL1909509-1058080

UPM functional check

The UPM functional check runs a prescribed scan in the selected RF chain. It compares the measured RF power from the UPM to the expected value in a config file. If the values do not fall within 12%, the functional check fails. In addition, the functional check confirms that the UPM will stop scanning if the RF measured exceeds the trip limit. (See UPM Calibration and UPM Functional Check–Body Mode and UPM Calibration and UPM Functional Check–Head Mode.)

If the functional check fails to run, first check the system error log. See UPM fault messages to troubleshoot UPM system errors.

If the functional check fails due to inaccurate power measurement, first re-calibrate the UPM, and then attempt the functional check again.

Topic ID: id_SL4692487-1058080

Troubleshooting potential UPM problems

The following is a list of potential UPM problems.

Problem: UPM calibration fails.
Issue: Head and body RF power are not correct; or bad UPM detector board or bad UPM processor board; or cabling not correct.
Solution: If the UPM calibration fails, check the system error log. Use the Problem/Solution list in UPM fault messages to troubleshoot the errors in the error log. If UPM fault messages does not solve the calibration errors, attempt the following steps:
1. Quit the UPM Calibration tool, end any open exams, and perform a TPS reset.
2. Open a new exam with Patient ID: geservice and weight: 111.
3. Select Service, Other.
4. Select apb cal (series 1 if troubleshooting body and series 2 if troubleshooting head).
5. Select Save Series.
6. Confirm that the correct hardware setup exists (cables connections and dummy load connections match the setup shown in the documentation).
7. Click Manual Prescan.
8. If you are troubleshooting UPM reflected power calibration, change TG to 63. If you are troubleshooting UPM forward power calibration, set TG above 149.
9. Click Scan TR.
10. Check for Inhibit light on CAM/KASC chassis, driver module.
11. Check for Sense LEDs flashing on the correct channel (both RF detector boards should have one of the channel’s Sense LEDs flashing, matching the channel you are troubleshooting).
12. Exit manual prescan.
The system must be able to scan with the correct UPM Sense LEDs flashing before running the calibration. If the Sense LEDs are not flashing, check the error log to determine if the scan was stopped. Also check that the hardware setup is correct.
If the setup and system are good but the Sense lights are not flashing, make sure RF is getting to the UPM by placing a 50 ohm terminator in the port you are troubleshooting and the UPM RF cable into a 50 ohm terminated scope. Make sure you see a RF signal. If no signal exists, attempt reading at various points along the cable path to determine where the signal is lost. If a signal exists, attempt swapping/replacing RF detector boards. See UPM board swap procedure.
Note: Sometimes calibration fails due to an RF amplifier excessive peak power fault. Check the setup and condition of the test equipment and RF cable connections at every component. Also confirm that the RF amplifier power calibration was done according to the documented service procedure.
Note: If the UPM reports a short or long term average power fault (ERROR 2254783), launch the RF amp calibration procedure through the UPM Tool, adjust TG to suggested values above, and observe Inhibit and Sense LEDs as indicated above.
Problem: MNS only: If no power is output from the MNS amplifier during UPM forward power calibration, follow these steps:

Issue: MNS mode is not selected.

Solution:
1. Close the UPM Tool and start a new exam in geservice mode with a patient weight of 50 kg.
2. Create a landmark with the 31P TR switch.
3. Prescribe 31P Func Check series from the Service > MNS Setup menu.
4. Save and download the sequence with any acceptable scan parameters.
5. Open Spectro Prescan, select Start, and let the sequence run for about 10 seconds.
6. Stop the sequence, end the exam, and continue with the UPM calibration.
Problem: Config file CRC mismatch.
The following error message appears when starting a UPM Tool task or viewing the UPM Tool configuration file.

Figure 5. UPM error message

Issue: The calculated checksum value for upm.config configuration file does not match the checksum at end of file. upm.config file contents were edited or corrupted.
Solution: Copy default UPM configuration file (/usr/g/tools/upm/upm.config.3.0T.XRMW) to UPM Tool configuration file (/usr/g/tools/upm/upm.config). After you replace the configuration file, you must do a full UPM calibration and functional test on the system.
Note: The Shell window can only be launched when the EA3 user is included in the authorized EA3 group. Users not in this EA3 group will not have access to launch the Shell window. If you are not logged on as the proper logon user, log out and then log back on as the correct EA3 user with the authorized permissions.
Problem: RF amplifier does not output power during RF amplifier or UPM calibration.
Power meter does not read any power during RF amplifier or UPM calibration.
Potential Issue: RF amplifier has tripped. Check the GE system log for an error regarding a RF amplifier or UPM fault.
Solution 1: If the RF amplifier has tripped due to an excessive power fault, launch the RF amp calibration procedure through the UPM Tool, increase TG to a level that does not cause a fault, and follow instructions to recalibrate the amplifier in the “RF Amplifier Setup and Calibration” section for the appropriate RF chain.
Solution 2: If UPM has indicated that measured power has exceeded SAR limits, re-launch the RF amplifier or UPM calibration procedure through UPM Tool. This will reset measured power and allow calibration to continue.
Problem: UPM Tool procedure fails to launch, returns “ERROR” status.
UPM Tool procedure fails to launch with message “Incorrect Rx, please check coil and landmark” in Status window.
Potential Issue 1: Incorrect coil attached.
Solution 1: Attach correct coil (no coil plugged in for body procedure, head coil plugged in for head procedure, 31P MNS TR switch plugged in for MNS procedure).
Potential Issue 2: No landmark established.
Solution 2: Perform a landmark with the correct coil. Press Advance to Scan.
Problem: RF power output during UPM calibration procedure is not within specified limits.
Power meter measured power does not read within the specified limits during UPM calibration procedure
Potential Issue: RF amplifier calibration is out of specification.
Solution: Follow instructions to recalibrate amplifier in “RF Amplifier Setup and Calibration section” for the appropriate RF chain.

Topic ID: id_SL219592-1058080

UPM fault messages

Table 4. UPM fault messages with descriptions and dctions
Fault description	Problem description	GE field action
EM_SCP_STOP_ACTION_UPM_ERROR Universal Power Monitor error occurred.	General fault	This is a general UPM fault; view other errors in error log for more details.
EM_POWER_FAULT_WARNING Power Monitor Warning: % percent of limit reached for the XX Average.	General high power warning	This is a general warning that the scan approached the maximum allowable SAR. No action required.
EM_LARGE_DIFFERENCE_DETECTED. Large difference was detected between the two power monitors. Difference is in the (long/short term) average. Monitor 1 reads XX W/kg Monitor 2 reads YY W/kg	The power levels detected by the UPMs differ greatly. Error can occur during the calibration process. If this error occurs during UPM calibrations, ignore. Error can also occur during troubleshooting if UPM boards have been swapped. Return boards to original spot or run UPM calibrations.	Calibrate and run the UPM functional check. If error continues, go to UPM board swap procedure and swap the RF detector boards. Recalibrate and run the UPM functional check. If lower value follows board, order new board. Try replacing one board, recalibrate and run the functional check. If error continues, replace the other board, then recalibrate and run the functional check. If lower RF value does NOT follow RF detector board, swap the cables running into the RF detector boards. Recalibrate and run the UPM functional check. If lower value moves to other UPM, then check resistance of both cable runs. If the resistance of the cables are equal, then replace the RF couplers internal to the affected RF amplifier (couplers may not be the FRU; the actual FRU depends on amplifier type). If the lower value moves to the other UPM, then check resistance of both cable runs. If the resistance of the cables are equal, then replace the RF couplers internal to the affected RF amplifier (couplers may not be the FRU; the actual FRU depends on amplifier type). If the resolution presented here does not fix the issue, replace the UPM processor board within the UPM chain experiencing faults.
EM_TOO_MUCH_REFLECTED_POWER UPM1/2 detected more reflected power than forward power on the (head/body/MNS) amplifier. Possible cause is swapped forward and reflected power cables. Forward Power = XX W Reflected Power = YY W Coil Reflected Power = ZZ W	UPM detected that there was more reflected power than forward power.	If this error occurs during reflected UPM calibrations, ignore. Make sure UPM cabling matches block diagrams. Make sure that there are no opens in the transmit chain. Opens could cause equal power for forward/reflected that could trigger this fault. If the steps above are not applicable, see UPM board swap procedure and swap detector boards to determine if the error moves as well.
EM_UPM_FPGA_SN_FLT The (UPM1/2) has detected that the FPGA was unable to read serial number information.	The FPGA was unable to read serial number information from (RF detector/RF processor) UPM board. This could be caused by an old revision of FPGA code or a hardware problem.	See UPM board swap procedure and swap detector boards to see if fault moves. If so, replace the faulty detector board. If root cause not determined, see UPM board swap procedure and swap processor boards to see if the fault moves. If so, replace the faulty processor board. If root cause not determined, replace the CAM/KASC chassis.
EM_UPM_PWR_FLT_DETECT The (UPM1/2) has detected an Invalid Power Fault on the (Head/Body/MNS/CW) Amplifier.	The UPM detected RF power out of an amplifier port that should not have been producing RF at that time.	Capture the protocol/sequence that produces this error repeatedly, then follow the following steps. If only one UPM detects this error, see UPM board swap procedure and swap the affected RF detector boards. If only one UPM detects this error and swapping the affected RF detector boards was attempted with no success, see UPM board swap procedure and swap the processor boards. If both UPMs indicate this failure, or prior procedures were attempted with no success, then proceed with troubleshooting the unblank signal and affected RF amplifier, because this indicates a system fault. It is also possible that external RF noise or some event has brought the RF hub out of standby state during RF transmit, thereby interrupting the unblank signal to UPMs. Look in the error log for other messages that occurred within 5 seconds before or even after this one that may help confirm this.
EM_UPM_PWR_LIMIT_EXCEED The (UPM1/2) detected a Power Fault on the (Short/Long Term) Average. Calculated Average = XX Limit = XX.	This indicates that the UPM detected power that exceeded the trip limit for the area scanned.	Customer should check the protocol to determine if it produces excessive SAR. Protocol should be approved by GE Apps specialist, if applicable. If the protocol is acceptable, calibrate UPM and run the UPM functional check. If the trip is consistently on one UPM, see UPM board swap procedure and swap the RF detector boards, then recalibrate the UPM after the swap. If the faults follow the RF detector board, replace it. If the fault does not follow the RF detector board, replace the CAM/KASC chassis.
EM_RF_NB_BOARD_MISSING NB Detector Board Missing	UPM detects that a NB RF detector board is missing.	Reseat both RF detector boards. Check for bent/broken pins on backplane and board. See UPM board swap procedure and swap detector boards. If the error does not follow the detector board, see UPM board swap procedure and swap processor boards to see if the fault moves. If so, replace the faulty processor board. If the cause cannot be determined through this procedure, replace the CAM/KASC chassis.
EM_RF_BB_BOARD_MISSING MNS Detector Board Missing	UPM detects that a MNS RF detector board is missing.	If the detector boards are indicating a cable-missing fault, place a 50 ohm terminator in the affected port. If the error continues, replace the detector board. If the error goes away, determine where in the cable chain the connection is lost by using a DMM and checking for 50 ohm resistance between the shield and center pin. You can also test by swapping cables along the chain to see where the failure occurs. If the error remains, replace the RF detector board. If the processor board unblank error occurs, check the voltage between pins 1 and 6 of the cable into the processor boards. The voltage should be between 2 and 3.3 volts. If it falls out of this range, troubleshoot the cable chain back to the driver module. If the voltage appears okay, see UPM board swap procedure and swap processor boards to see if fault moves. If so, replace the faulty processor board. If this procedure does not determine the cause, use a DMM to check the continuity of the cable connected to it. If it is bad, replace the cable.
EM_BUS_SELFTEST_FAIL The UPM1/2 failed its BUS Self Test on the XXChannel. Expected Data : X% Detected Data : Y%	This is a failure of the data bus from the RF detector board, through the backplane, to the processor board.	See UPM board swap procedure and swap RF detector boards to see if the fault moves. If so, replace the faulty detector board. If the RF detector board is not the failure, see UPM board swap procedure and swap the processor boards to see if fault moves. If so, replace the faulty processor board. If both RF detector and processor boards are okay, replace the CAM/KASC chassis.
EM_DAC_SELFTEST_FAIL The (UPM1/2) failed its DAC Self Test on the XX Channel. Expected Data : X Detected Data : Y	This is a failure of the digital to analog converter on the RF detector board.	See UPM board swap procedure and swap RF detector boards to see if fault moves. If so, replace the faulty detector board. If the RF detector board is not the failure, see UPM board swap procedure and swap the processor boards to see if fault moves. If so, replace the faulty processor board. If both RF detector and processor boards are okay, replace the CAM/KASC chassis.
EM_LUT_SELFTEST_FAIL The (UPM1/2) failed its LUT Self Test on the XX Channel. Expected Data : 0x%x. Detected Data : 0x%x.	LUT = Look Up Table. This is a failure of the processor board.	See UPM board swap procedure and swap the processor boards to see if the fault moves. If so, replace the faulty processor board. If the processor board is not the cause, replace the CAM/KASC chassis.
EM_NB_LUT_TABLE_LOAD_FAIL The UPM1/2 Look Up Table Failed on the Narrow Band RF Detector board. Number of Write Failures: ##	LUT = Look Up Table. This is a failure of the processor board.	See UPM board swap procedure and swap the processor boards to see if fault moves. If so, replace the faulty processor board. If the processor board is not the cause, replace the CAM/KASC chassis.
EM_MNS_LUT_TABLE_LOAD_FAIL The UPM1/2 Look Up Table Failed on the MNS RF Detector board. Number of Write Failures: ##	LUT = Look Up Table. This is a failure of the processor board.	See UPM board swap procedure and swap the MNS processor boards to see if the fault moves. If so, replace the faulty processor board. If the processor board is not the cause, replace the CAM/KASC chassis.
EM_SCP_UPM_SHORT_TERM_REG_FAIL (Head/Body/Extremity/Other) Short Term Limit Write Fail. Head Present Limit: XX Body Present Limit: XX Extremity Present Limit: XX Other Present Limit: XX	A value written to the register was read back as a different value.	Do not change any hardware, because this could normally appear during resets or when software is not in sync with the UPM. If the failure continues, replace the processor board.
EM_SCP_UPM_LONG_TERM_REG_FAIL (Head/Body/Extremity/Other) Long Term Limit Write Fail. Head Present Limit: XX Body Present Limit: XX Extremity Present Limit: XX Other Present Limit: XX	A value written to the register was read back as a different value.	Do not change any hardware, because this could normally appear during resets or when software is not in sync with the UPM. If the failure continues, replace the processor board.
EM_UPM_CALIBRATION_FAIL The (UPM1/2) detected a Calibration failure on the ADC. Calibration Pass BitMap = XX	The analog-to-digital converter on the RF detector board failed to autocal properly.	Reseat the RF detector board, checking for bent bins on both the boards and backplane. If failure occurs on only one board, see UPM board swap procedure to swap RF detector boards to see if fault moves. If so, replace the faulty detector board. If the steps above do not find the cause, see UPM board swap procedure and swap the processor boards to see if fault moves. If so, replace the faulty processor board. If these actions do not find the cause, replace the CAM/KASC chassis.
EM_UPM_CAN_SELFTEST The (UPM1/2) failed its CAN selftest. The CAN module on the DSP failed its self test procedure.	The fault indicates a failure in the CAN DSP, located on the UPM processor board.	Pull out and reseat both processor boards. Run the UPM I/O diagnostics to see if the error has cleared. If error continues, replace the affected UPM processor board.
EM_UPM_FPGA The (UPM1/2) has detected a FPGA error. Source of Fault is (one of the following): FPGA Read/Write failure FPGA INIT not ready	The fault indicates a failure in the FPGA, located on the UPM processor board.	Pull out and reseat both processor boards and the power supply. Run the UPM I/O diagnostics to see if the error has cleared. If error continues, replace the affected UPM processor board.
EM_UPM_NOT_CALIBRATED The UPM1/2 has not been Calibrated. No Scanning will be Allowed until Calibrated.	This fault occurs when the UPM has not been calibrated.	Calibrate the UPM and perform the UPM functional check.
EM_UPM_PS_FAULT The (UPM1/2) Has Detected a Power Supply Fault. Source of Fault is (one of the following): UPB +12 Volts UPB -12 Volts UPB +5 Volts UPB +3.3 Volts UPB +1.5 Volts UPB +1.65 Volts Actual Voltage = ## Limit Voltage = ##	This fault occurs when the UPM processor board detects incorrect power from the power supply. This is due to a failed power supply, backplane, processor board or a processor board or power supply that is not seated correctly in its slot. The UPM detected a problem with one of its power supplies. Note: If the fault indicates RF, then proceed to next row in this table.	Pull out and reseat both processor boards and the power supply. Run the UPM analog diagnostics to see if the error has cleared. Check the voltages using a DMM at the input panel of the UPM. If these voltage levels confirm the fault description, then replace the UPM power supply. If the error is consistently coming from only one UPM, see UPM board swap procedure and swap the UPM processor boards to see if the fault moves. If so, replace the faulty processor board. Check that the incoming power to the CAM/KASC is 110 to 130 VAC 50/60 Hz. If the error continues after attempting the above steps, replace the CAM/KASC chassis.
EM_UPM_PS_FAULT The (UPM1/2) has detected a Power Supply Fault. Source of Fault is (one of the following): RF NB +12 Volts RF MNS +12 Volts RF NB +5 Volts RF MNS +5 Volts RF NB +3.3 Volts RF MNS +3.3 Volts RF NB Ref Voltage RF MNS Ref Voltage Actual Voltage = ## Limit Voltage = ##	The UPM detected a problem with power on a RF detector board. The issue is either with a supply voltage on one of the detector boards or with the monitoring of that supply voltage on the associated UPM processor board.	Pull out and reseat the affected processor board and RF detector board. If the error is consistently coming from only one UPM, see UPM board swap procedure and swap the UPM RF detector boards to see if fault moves. If so, replace the faulty detector board. If the error does not follow the RF detector boards, see UPM board swap procedure and swap the UPM processor boards to see if fault moves. If so, replace the faulty processor board. If the error is still on the same UPM, replace the CAM/KASC chassis.
EM_UPM_FILE_OPEN_FAIL Unable to open the YY file. Please fix and TPS Reset.	Caused by missing software config file.	Error should state the file name and location. Attempt RestoreInfo. Otherwise a software load may be required.
EM_UPM_CAL_FAIL_EMULATED Unable to Calibrate the UPM because it is emulated out. Please remove emulation and TPS Reset.	UPM is emulated out.	Remove UPM emulation from mgd_stage file. Perform TPS reset and recalibrate.
EM_UPM_CAL_FAIL_FILE_OPEN UPM Calibration failed due to failure to open XX file.	Caused by missing software config file.	Error should state the file name and location. Attempt RestoreInfo. Otherwise a software load may be required.
EM_UPM_CAL_FAIL_POWER UPM Calibration failed due to failure to converge on a calibration point. Verify that power is applied on the proper channel on the UPM.	UPM calibration failure. The UPM tried to calibrate to applied power but could not match the value required.	This usually means that some event interrupted test execution, but the tool cannot identify the event. Review the error log for events logged during test execution that interrupted test. See Troubleshooting potential UPM problems.
EM_UPM_CAL_TIMEOUT UPM Calibration failed due to a timeout on the Calibration process. Verify that the UPM is powered up and all cables are connected properly.	UPM calibration failure. The UPM tried to calibrate to applied power but could not match the value required.	See Troubleshooting potential UPM problems.
EM_UPM_RECALIBRATION_ERROR The UPM detector board was changed but not calibrated. Patient scanning will be inhibited until the UPM calibration has been done. Location: CAM/KASC chassis.	The system detected installation of different UPM detector board in the ASC/UPM chassis slot. Due to normal differences between UPM detector boards, UPM calibration must now be done. This message may also appear during initial system installation or until contents of SaveInfo media are restored. Go to UPM Calibration and UPM Functional Check - Body Mode using the link in the next cell. The system read the Hart ID file and noted the serial number of the board that was changed.	Do Doing the UPM functional check (head and body) and UPM Calibration and UPM Functional Check-Head Mode. These modules describe the calibration procedure. Patient scanning is inhibited until this is completed.

Topic ID: id_SL219588-1058080

UPM board swap procedure

Note: If either the processor board or RF detector boards are swapped, the UPM calibration and functional check must be run before patient scanning.

Topic ID: id_SL5512965-1058080

Finalization

Return the system to normal configuration and operation.
If a UPM detector board or UPM processor board was replaced, run calibration. (See UPM Calibration and UPM Functional Check–Body Mode and UPM Calibration and UPM Functional Check–Head Mode.)
Do SaveInfo.