De-Energized magnet using three supplies set as follows:
Supply 1 and 2 applied thru the 10-way connector on the neck tube.
Supply 3 applied thru the shim stick.
Main heater would not open when it was in parallel with RPS, so moved the RPS to the supply with Z0. All shim currents set to about 120 mA. Also dumped each radial shim that was above 5A before I started.
Mercury 400 Alarm Found that the PS204, which is a +12VDC and +5VDC power supply had a capacitor that was bulging. Tested the +12VDC and observed the following: When OK 12.4 VDC 0.1 VAC When Beeping 11.8 VDC 0.8 VAC At Startup 10.5 VDC 1.5V AC Ordered replacement power supply from Mouser Electronics. Part Number: HCC512-A+G…
System had several issues including bad Digital PS, inconsistent shims and intermittent RF output. Believe the shim issues were due to bad digital PS. Still having intermittent RF issues. Also, the CPU board was bricked. I was able to restore it to defaults using procedure below. Attach a terminal connection to the Acq CPU Diag…
Repaired various issues with the DD2 400, and Mercury 400. Also, had to figure out how to setup Mercury for Q-Tune because it has a protune accessory. Mercury also had a bad High Band transmitter that had several steps from its attenuator bad.
SMS alignment off by about 1/2 cm causing sample move failure. Re-aligned SMS. Ve Re Rt CP1:AT.HAND.GP 2.0 30.4 90.0 CP1:CLEAR.HAND.GP 23.0 0.0 90.0 HAND.GP 16.5 19.9 90.1 CP31:RACK P1 19.5 4.7 76.6 CP31:RACK P2 19.5 4.7 43.7 CP31:RACK P3 19.5 27.2 49.7 CP191:MAGNET 13.4 29.6 259.3 CP191:CLEAR 34.0 0.0 259.3
Customer reported no 2H signal during find lock function or gradient shimming. Other issues, AMT had bad fan and the console main switch would not stay on. Replaced fans in AMT Replaced main power switch Tested system RF When testing RF found that output of AMT had good power out for H1 but the RF…
Completed Install of SMS Robot and SYS-V Controller. Customer had table, cables and interface cards. Vertical Reach Rotation CP1:AT.HAND.GP 1.8 30.3 89.9 CP1:CLEAR.HAND.GP 24.8 0.0 89.9 HAND.GP 16.2 19.9 89.8 CP31:RACK P1 19.5 4.7 76.3 CP31:RACK P2 19.5 4.6 43.2 CP31:RACK P3 19.5 27.2 49.3 CP191:MAGNET 19.3 21.9 272.0 CP191:CLEAR 34.0 0.0 272.0