Scanner fails to boot to applications, Unable to verify DARC system startup.

Symptom

Error message

kernel: unable to read partition table (seen in /var/log/messages)

Buffer I/O error on device md0, logical block 78013824 seen on HP or DARC in /var/log/messages See LD for complete error Buffer I/O error on device md0, logical block 78013824 cd /var/log tail –1000 messages | more Look for any disk drive errors like these below in the HP or the DARC messages log: 16:13:48 ctcwct01 kernel: Buffer I/O error on device md0, logical block 26881685 Aug 2 12:11:33 darc kernel: Buffer I/O error on device md0, logical block 78013824

Applies to

Models

LightSpeed

Product

LightSpeed RT4 WB O G4 G HPT WB O M4 G HPT LightSpeed RT4 with GRE and MDAS4 or GDAS4 gantry At GE Medical Systems, we’re pioneering exciting CT technology for Radiation Therapy planning. Introducing the newest addition to our LightSpeed® series – LightSpeed RT, the first multi-slice, wide-bore CT scanner with the largest field of view in the industry. With a generous 80 cm gantry opening, the LightSpeed RT bore is 10 cm larger than conventional scanners. This provides complete flexibility for patient positioning freedom – even for the most demanding oncology needs. And the 65 cm variable field of view delivers 15 additional centimeters of visual coverage, allowing clinicians to see a patient’s entire anatomy for precise radiation therapy planning. Position and precision Thin, multi-slice imaging is the extra bonus – enabling respiratory gating, providing precise target delineation and delivering higher resolution digitally reconstructed radiographs (DRRs) than ever before. All adding up to the ability for you to deliver what really matters most – better cancer care for your patients. Plus, the LightSpeed RT scanner is available with the Exact™ couch insert, enabling you to consistently replicate patient immobilization for treatment. With LightSpeed RT, the future of your Radiation Oncology department is wide open. Links to the Product Service Manuals, FMIs, Service Notes, Option Manuals and Operator Documents can be found online at the attached sites. Always use the most appropriate documentation for your system.

Component

2362873 SDDA (Scan data disk array) used on GOC3. See Long Description for details. The GOC3 to GOC4 upgrade kits are now under 1 part number, 5144058-500 plus the FE will have to also order the DARC2 that is needed by the DAS as a separate order. Part #: 2362873 Part Type: GP CONSUMABLE - RETURNABLE Part Weight: 0.00 LBR Repairable: No Returnable: Yes Hazardous Material: N Description: SCAN DATA DISK ARRAY - GRE FRU: Yes Status: Orderable Comments: OBSOLETE PART case 8391074 This part has been identified as obsolete and no short-term solution has been identified FE must identify and order a higher or lower level spare part as required Contact your support engineer on-line engineer or Parts ID team should you require support 212012173 05-23-07 ** FE ASSIST ** For CT not PET.. IF no stock of 2362873 SDDA must upgrade to DARC II + ICOM Kit per one of the following part number's * 5144058-500, 16 MDAS 16,8,4 GDAS DARC Replacement kit, JARRELL * 5144058-501, 4,8 MDAS DARC Replacement Kit, JARRELL * 5144058-502, 4 SDAS DARC Replacement Kit, JARRELL Documentaion 5194645-100 Must order software release 06MW29.7, p/n 5193989 and perform a LFC to support this FRU if system is not currently running 06MW29.7 or better (2/19/07 212001261) *** 2ND OPINION NOTES *** Look at the DARC messages log for SCSI disk errors located at /var/log/messages

Area

CT

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