----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Fri Jul 28 16:28:15 GMT 2006 Year: 06 Doy: 209 Observer: yasukawa WEATHER COMMENT: Fri Jul 28 16:28:37 GMT 2006 Clear overhead but sun behind high cloudbank to east. S wind 19 mph, temp 43 F. ___end___ **MKIV PROBLEM**: Fri Jul 28 16:29:30 GMT 2006 Waited for KCC monitor to come up before doing "Run". KCC monitor did not come up, I can see CW pulses at J6-C16 on the transformation board indicating KCC is sending barrel pulses to the tranformation board. Barrel is not turning. ___end___ **MKIV PROBLEM**: Fri Jul 28 16:44:57 GMT 2006 One possible clue.... Barrel status indicating CW limit, drive is enabled in CW direction. Barrel is actually at 359, the stow position which is not a limit. ___end___ Fri Jul 28 16:46:57 GMT 2006 CHIP Start Patrol SBM COMMENT: Fri Jul 28 16:47:08 GMT 2006 Observing. ___end___ PSPT COMMENT: Fri Jul 28 16:48:28 GMT 2006 Starting up. ___end___ Fri Jul 28 16:49:30 GMT 2006 PICS Start Patrol WEATHER COMMENT: Fri Jul 28 16:59:29 GMT 2006 Cloud deck following sun as it tries to climb out. Paused SBM. ___end___ **MKIV PROBLEM**: Fri Jul 28 17:18:12 GMT 2006 CW pulses also at J25-2, the output of the signal transformation board going up to the dome. ___end___ COMMENT: Fri Jul 28 17:46:37 GMT 2006 jostling spar around troubleshooting mk4. ___end___ Fri Jul 28 18:02:18 GMT 2006 PICS Flat Fri Jul 28 18:03:09 GMT 2006 CHIP LSD Fri Jul 28 18:04:36 GMT 2006 PICS End Flat Fri Jul 28 18:04:42 GMT 2006 PICS ReStart Patrol Fri Jul 28 18:04:51 GMT 2006 CHIP End LSD Fri Jul 28 18:04:58 GMT 2006 CHIP BiasLSD Fri Jul 28 18:05:37 GMT 2006 CHIP End BiasLSD Fri Jul 28 18:05:42 GMT 2006 MKIV Start Patrol Fri Jul 28 18:05:44 GMT 2006 CHIP Bias Fri Jul 28 18:06:24 GMT 2006 CHIP End Bias Fri Jul 28 18:06:29 GMT 2006 CHIP ReStart Patrol **MKIV PROBLEM**: Fri Jul 28 18:06:16 GMT 2006 Installed probes on output to 75115 line receiver on the spar after turning off spar power. Connected scope to probes and turned spar power back on. Cycled KCC power and watched as KCC rebooted. Barrel CW pulses appeared there between the line receiver and the STM101 board. There is the possibility that enough time has passed that the intermittent went away or that pulling the tranceiver board to attach the probes and inserting the board again may have fixed a poor connection at the board edge connector. As a possible fix, I will replace the 75115, IC-A on the board. Turning off spar power and working on board. This may again hose the pointing. ___end___ **MKIV PROBLEM**: Fri Jul 28 18:31:52 GMT 2006 Tesong barrel in overcast. Patrol is working. ___end___ WEATHER COMMENT: Fri Jul 28 18:37:39 GMT 2006 Anvil top of cloud bank to east keeps expaning westward faster than the sun is moving. ___end___ **MKIV PROBLEM**: Fri Jul 28 18:45:18 GMT 2006 Did an End Day and then turned off KCC. Powered back up to see if barrel will move from 359 to 176 as it should during normal start-up. ___end___ **MKIV PROBLEM**: Fri Jul 28 18:48:36 GMT 2006 OK, Startup performed normally. Patrol is running normally in overcast. Either replacement 75115 or board reseat fixed the problem or the real culprit has had its morning coffee and has decided to start working as Allen proposed. ___end___ COMMENT: Fri Jul 28 18:51:50 GMT 2006 Time for my morning coffee! ___end___ Fri Jul 28 19:19:18 GMT 2006 MKIV End Patrol Fri Jul 28 19:21:51 GMT 2006 CHIP End Patrol Fri Jul 28 19:22:01 GMT 2006 PICS End Patrol **MKIV PROBLEM**: Fri Jul 28 20:08:49 GMT 2006 Checked CW and CCW limit seitches and they are currently working OK. CW limit LED was on this morning even though the barrel was at 359 degrees. If the CW limit switch was actually enabled/stuck upstairs, then CW pulses coming out of the KCC would not get through the 75115 upstairs which would' be disabled by the limit switch. NO enables line receiver, NC -- barrel at limit, line receiver disabled. If CW limit switch is closed, CW pulses are blocked to STM101 stepper motor driver board. << places to check if barrel doesn't rotate tomorrow morning. ___end___ WEATHER COMMENT: Fri Jul 28 20:29:26 GMT 2006 light mist moved in, closed domes. ___end___ WEATHER COMMENT: Fri Jul 28 21:27:13 GMT 2006 In fringes of former tropical depression Daniel. In light blowing mist, thick cloud bank, 22 mph wind gusting to 34 mph. ___end___ GONG COMMENT: Fri Jul 28 21:28:46 GMT 2006 Stowing turret as a precaution. ___end___ Fri Jul 28 21:29:30 GMT 2006 MkIV 18_05.rawmk4 18_08.rawmk4