319365 DD219381 PAN OPERATION FOLLOWING INCIDENT AT BLACKFRIARSSEE ATTACHED FOR PANTOGRAPH CONDITION & FUNCTIONAL AS CARRIED OUT BY FARRINGDON FITTER. FURTHER FUNCTIONAL CHECKS CARRIED OUT AND NO DEFECTS FOUND. UNIT OK FOR SERVICE
319369 DD219379 PANTOGRAPH INCIDENT AT BLACK FRIARS
CARRIED OUT TESTING AS DETAILED BY SRSI (SEE ATTACHED) OTMR DOESN'T SHOW AC OR DC SELECT AND NEXALA SYSTEM SERVER WAS DOWN AT TIME OF INCIDENT SO UNABLE TO CHECK RCF SYSTEM. WITH SRSI IN LEAD CAB OF 319365, A SEQUENCE OF AC SELECT/PAN UP - DC SELECT/PAN DOWN - AC SELECT/PAN UP WAS CARRIED OUT - ALL CAB INDICATIONS WERE CORRECT BOTH CABS OF 319369. FOUND THAT THE PANUP/DOWN EP VALVE HAD FAILED IN THE PAN UP POSITION WITH THE UNIT IN DC MODE. MULTIPLE ATTEMPTS CARRIED OUT AND THE FAILURE MODE WAS INTERMITTENT. PAN UP/DOWN EP VALVE REMOVED - WARRANTY EXPIRY WAS 2007 AND BENCH TESTED WITH STABLE POWER SUPPLY - FAILED IN PAN UP MODE WITH 110 V DC SUPPLY. NEW PAN UP/DOWN VALVE FITTED AND TESTED MULTIPLE TIMES - OPERATED CORRECTLY AS PER SELECTION
CARRIED OUT TESTING AS DETAILED BY SRSI (SEE ATTACHED) OTMR DOESN'T SHOW AC OR DC SELECT AND NEXALA SYSTEM SERVER WAS DOWN AT TIME OF INCIDENT SO UNABLE TO CHECK RCF SYSTEM. WITH SRSI IN LEAD CAB OF 319365, A SEQUENCE OF AC SELECT/PAN UP - DC SELECT/PAN DOWN - AC SELECT/PAN UP WAS CARRIED OUT - ALL CAB INDICATIONS WERE CORRECT BOTH CABS OF 319369. FOUND THAT THE PANUP/DOWN EP VALVE HAD FAILED IN THE PAN UP POSITION WITH THE UNIT IN DC MODE. MULTIPLE ATTEMPTS CARRIED OUT AND THE FAILURE MODE WAS INTERMITTENT. PAN UP/DOWN EP VALVE REMOVED - WARRANTY EXPIRY WAS 2007 AND BENCH TESTED WITH STABLE POWER SUPPLY - FAILED IN PAN UP MODE WITH 110 V DC SUPPLY. NEW PAN UP/DOWN VALVE FITTED AND TESTED MULTIPLE TIMES - OPERATED CORRECTLY AS PER SELECTION
319009 DD319417 UNABLE TO RESET SFR ON ATOS VEHICLE
FOUND SFR ON WSP RACK UNABLE TO RESET AND POWER SUPPLY FAULT LED LIT - TRIED RENEWAL OF TIMER CARD AND RELAY CARD - FAULT STILL PRESENT - RENEWED WSP RACK COMPLETE AND FAULT NOW CLEAR - SERIAL NUMBER OF DEFECTIVE RACK NOT KNOWN, NEW RACK SERIAL AE-9003-3530
FOUND SFR ON WSP RACK UNABLE TO RESET AND POWER SUPPLY FAULT LED LIT - TRIED RENEWAL OF TIMER CARD AND RELAY CARD - FAULT STILL PRESENT - RENEWED WSP RACK COMPLETE AND FAULT NOW CLEAR - SERIAL NUMBER OF DEFECTIVE RACK NOT KNOWN, NEW RACK SERIAL AE-9003-3530