Advantest R6243 DC Voltage Current Source/Monitor Error 337 & Mini Teardown - Page 1
Forum section: electronics / repair

author: coldframe
author_rank: Regular Contributor
timestamp: July 21, 2015, 11:45:34 am
content: Hello Forum.I just recently acquired ADCMT(Formerly known as Advantest) R6243 DC Voltage Current Source/Monitor (aka SMU),bought as Selftest Fail at Bargain price. Unit is pretty good shapeBTW, I am going to share a few photo.#0,1 Outline19" Standard Rack Size, Net. Weight Aprox. 15Kg(33lb), Date of MFG 2003.There are Two+1 PCB in Unit.Top is Linner Power Supply, Bottom is Digital/Analog Board#2, Front/Rear PanelWarning : There is no Front/Rear Switch, all connected to one another Why???#3, Digital&Analog Boardmore detail next (counterclockwise 1,2,3,4)#3-1 Q1 DAC, ADC Reference Voltage2xAD7846 DAChttp://www.analog.com/media/en/technical-documentation/data-sheets/AD7846.pdf#3-2 Q2 External IN/OUT, Display(VFD), Keypad InterfaceMAX202 +5V, RS-232 Transceivers (for maintenance? I Discoverd Operation Manual, there is no mention of RS-232C)http://datasheets.maximintegrated.com/en/ds/MAX200-MAX213.pdf#3-3 Q3 GPIB, Main MCU, D/A PhotocouplerMain Processor Toshiba TMPG68303F(motorola 68000)http://data.leocom.kr/datasheets/upload/tmp68303f.pdf#3-4 Q4 Front/Rear Panel I/F, Range/Function Relay, Low themal reed Relay(TRY-104S), PrecisionResistor(Black Heat sink)#4, Voltage Reference & Precision ResistorLinear LT1021 10V Precision Referencehttp://cds.linear.com/docs/en/datasheet/1021fc.pdfAlpha Electronics Ultra Precision (Power) Resistor 0.2R, 2R, 20Rhttp://www.alpha-elec.co.jp/w2img/ww0923133717H2667002-MA-MB-MC-MD(E)_final_01Jun2015.pdfhttp://www.alpha-elec.co.jp/w2img/ww0923133025H26through06.pdf#5, a lot of TestPoint#6, Selftet ERROR Code,This is My Problem, Unluckily, Still Fails the Power On Selftest and ERROR +337#7, Cheap Explain ERROR Code(from Operation manual)ERROR:+337 "VSVM 3.2V -FS"VSVM:Voltage Source, Voltage Measure, FS:Full ScaleSpec:https://www.rohde-schwarz.com/en/product/r6243-6244-productstartpage_63493-8306.htmlhttps://cdn.rohde-schwarz.com/pws/dl_downloads/dl_common_library/dl_brochures_and_datasheets/pdf_1/ADCMT_SMUs_overview.pdfOperation Manual:https://drive.google.com/folderview?id=0BxD05xrbn-k6fl9SaHM3a3E1TnNLWmZDNGtXTVFyUUt5SFY3S2VfZE5DcEszMDVRVXdpTlE&usp=sharingMore Hi-Resolution photoshttps://www.flickr.com/photos/119902516@N06/sets/72157656157145255Anybody know where I might get Service Manual.If someone has experiences with this unit, please share knowledge or any Suggestion, rumour, Check Point.Please let me know if you have any questions or Photo(Any Parts, Any Angle).Thankscoldframe

author: coldframe
author_rank: Regular Contributor
timestamp: July 25, 2015, 12:49:01 pm
content: Does anyone have any experience with SMU(Source Measurement Unit)? or Advantest Instruments?I am looking for some help and advice with regarding to Error +337Please Help,coldframe.

author: ManateeMafia
author_rank: Frequent Contributor
timestamp: July 26, 2015, 01:32:56 am
content: Thanks for the pics. I have seen many Advantest units for sale but have stayed away from them due to a lack of service manuals.One of the pictures shows a bunch of power supply test points. I would scope all of those to start. It appears that one of the caps has been replaced. It is just above the +15VP test point and is different from the others. Perhaps someone was chasing the same problem?If you could run through the performance test and post the results, it might give someone an idea which ranges are affected and whether it is a calibration issue or hardware failure.

author: coldframe
author_rank: Regular Contributor
timestamp: July 26, 2015, 06:54:04 am
content: Hello, ManateeMafiaThat is absolutely correctI came across this in a someone was chasing or repair evidence & Check Results (See Attated Photo)more Specific Photo Uploadedhttps://www.flickr.com/photos/119902516@N06/sets/72157656157145255I will try your advicePlease Let me know if you require any further informationThanx ManateeMafia,coldframe-15VF, -15VPQuote from: ManateeMafia on July 26, 2015, 01:32:56 am

author: ManateeMafia
author_rank: Frequent Contributor
timestamp: July 26, 2015, 02:22:41 pm
content: It looks like all the inguard voltages are generated on the board mounted on the bottom. It also looks like the same voltages are going to the smaller board that is mounted above the fan.Is it possible to test the +/- 15V with connector unplugged? I don't see any other connectors or inputs going to that board.Also, if you have a scope, you can measure any ripple on those rails. I see several Warning High Voltage stickers. Without a service manual, it will be tricky not knowing what to expect on that board. I would trace back the inputs to whatever bridge rectifier is supplying the regulators with the power off, make a diagram, and then troubleshoot without having to guess. It looks like one of the bridge rectifiers may have overheated. It is difficult to read the markings on the one below the large caps.Unfortunately, there doesn't seem to be a source for the maintenance manuals for most of the Advantest products.

author: coldframe
author_rank: Regular Contributor
timestamp: July 27, 2015, 03:14:05 pm
content: Hello ManateeMafiaGood News5V Voltage Drop I know why (Attatched Photo #1)Then suddenly, there is a changed ERROR Code (Photo #2)Bad NewsThere is expected, as you say, Just a little accident (-139V Short! Photo #3,#4)Don't worry I'm Still AliveBTW, I've got to run in to work. see yo this weekend i will Fllow up your advise (measure any ripple, more detail Power Supply modulePhoto etc..) I appreciate your interest. Stay tune.English is not my native language, hope for understanding.Thanks,ColdframeQuote from: ManateeMafia on July 26, 2015, 02:22:41 pm

author: aronake
author_rank: Frequent Contributor
timestamp: October 07, 2023, 06:42:25 am
content: Very old thread, but did you manage to repair this? I have same unit, with same error, but in a lower range.