Low Voltage on the High Voltage SSM Supply.
Symptom
Unable to Scan with SSM HV Power Supply Low Errors. See long description. New install. Unable to do first scan, get one pulse in prescan and then get a "SSM HV power supply low" and an "inductive or direct drive fault. Both faults state possible shorted load. The FE did a diode check on the BCD1, BCD2, and DD drive lines at the rear of the SSM, and read diode on all. FE powered off the SSM and then powered back on and measured OL on the HV test point on the CPFD, and then after about 25 seconds the HV went to 6-7 volts and HVPS fault led lit on the SSM, this happens with or without the BCD1, BCD2, and DD cables connected. This was very repeatable. FE got into the SSM and found the HV would stay up if the HV line to the CPD was disconnected at J5 (red cable) and JP2 in on the HV board and monitoring at TP7 & TP4 on the HV board. Also found a chip on the SSM which had a hole burned through it (don't know the location of this chip). With all of this we have concluded that the CPD is likely the problem. The SSM is the FRU on Excite systems. FE to order the SSM.
Error message
2224666 Auto Prescan failed, SSM High Voltage Supply is not ready. See long description Mon Nov 3 12:49:33 2008 Error: 2224666 Host: MR-001-BU Process: psc File: PscMainControl.cc Line: 1354 Exception Class: Unknown Function: Prescan: Host Autoprescan Auto Prescan failed, SSM High Voltage Supply is not ready. 2249163 SSM fault. High voltage power supply low. 2249163 Host: mr01 Process: NSP File: SCP:../RfNbMdsHWO.cpp Line: 2370 Exception Class: Unknown Severity: Unknown Function: RF: RF Bias PSD: Gradient Echo Coil: 8HRBRAIN Scan: 26489/1 SSM fault.^A High voltage power supply low. 2249163 Host: mr01 Process: NSP File: SCP:../RfNbMdsHWO.cpp Line: 2370 Exception Class: Unknown Severity: Unknown Function: RF: RF Bias PSD: Gradient Echo Coil: 8HRBRAIN Scan: 26489/1 SSM fault. High voltage power supply low.
Applies to
- Models
- Excite, Signa
- Product
- Excite HD For 12.0 1.5T Systems only.
- Software
- 12.0 Excite HD and 3T Excite HD products only
- Component
- SecondOpinion System Support Module 2160200-43 See comments in resolution concept for second opinion requirements before ordering this part. FE replaced SSM which is now a FRU Part #: 2160200-43 Part Type: GP REPAIRABLES Part Weight: 48.50 LBR Repairable: Yes Returnable: Yes Hazardous Material: N Description: ERBTEC #550020 SYSTEM SUPPORT MODULE FRU: Yes Status: Orderable ICV/Transfer Price: 5684.00 USD /Each List Price: 36215.22 USD /EACH See comments in resolution concept for second opinion requirements before ordering this part. FE replaced SSM which is now a FRU Part #: 2160200-43 Part Type: GP REPAIRABLES Part Weight: 48.50 LBR Repairable: Yes Returnable: Yes Hazardous Material: N Description: ERBTEC #550020 SYSTEM SUPPORT MODULE FRU: Yes Status: Orderable ICV/Transfer Price: 5684.00 USD /Each List Price: 36215.22 USD /EACH
- Area
- MR
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