[labnetwork] Suss MA6 Question

[Khanna, Rohit]

Hi James,
                 Our unit was very similar to yours. Unfortunately, it's hard to get the schematics for these, however I can assure you these are very similar, and they are standard buck boost convertor or SEPIC convertors. The MOSFET and diodes are easy to spot as they are mounted on a big heat sink with thermal paste.

Warm Regards
Rohit Khanna
Electronic Test & Measurement Engineer
London Centre for NANO Technology, UCL
Ph:+44-020-76799984
Lab: +44 20 3108 1516
Int Ext: 39984

________________________________
From: James Mitchell <jtmitch5 at ncsu.edu>
Sent: 23 March 2023 12:18
To: Khanna, Rohit <r.khanna at ucl.ac.uk>
Cc: Fab Network <labnetwork at mtl.mit.edu>
Subject: Re: [labnetwork] Suss MA6 Question

Thanks, we have the CIC1200. Do you have the schematics for this?

[20230323_075350.jpg]

On Thu, Mar 23, 2023 at 7:42 AM Khanna, Rohit <r.khanna at ucl.ac.uk<mailto:r.khanna at ucl.ac.uk>> wrote:
Hi Mitchell,
                    Could you put some images of the power supply along with the model number. We had a similar UV lamp power supply failure. I had to change the high power MOSFETS and diodes in the unit along with some PTC inrush current limiter. These lamp drivers are fairly advanced as they constantly monitor the power lamp power and lamp current. I had used the following components to get the supply up and running. Repairing this unit involves disassembling the complete power supply and do board level repairs. These parts were ordered from Mouser Electronics.

494-APT2X61D60J Rectifiers Fast Recovery Epitaxial Diode - D
494-APT5010JVRU2 Discrete Semiconductor Modules Power Module - Mosfet
494-APT80M60J Discrete Semiconductor Modules Power MOSFET - MOS8
821-GBPC3510W Bridge Rectifiers 35A 1000V GLASS PASS WIRE
995-MS32-20010
Inrush Current Limiters 32mm 20ohms 10A INRSH CURR LIMITER
TC4420CPA
MOSFET Driver Low Side, 4.5V-18V supply, 6A peak out, 2.1 Ohm output, DIP-8

Warm Regards
Rohit Khanna
Electronic Test & Measurement Engineer
London Centre for NANO Technology, UCL
Ph:+44-020-76799984
Lab: +44 20 3108 1516
Int Ext: 39984

________________________________
From: labnetwork <labnetwork-bounces at mtl.mit.edu<mailto:labnetwork-bounces at mtl.mit.edu>> on behalf of James Mitchell <jtmitch5 at ncsu.edu<mailto:jtmitch5 at ncsu.edu>>
Sent: 22 March 2023 18:29
To: Fab Network <labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu>>
Subject: [labnetwork] Suss MA6 Question


⚠ Caution: External sender

Lamp power supply will not turn on after lamp failure.
We had a lamp (350 W) pop on our system.
Cleaned up and installed a new lamp.
When we start the power supply the breaker in the back of the system trips.
Specifically, it trips when we press CP. System starts at STAND-BY.
Press "ON" and the display shows "READY". Press CP and it displays "Wait..." for a second and then trips.
We checked for shorts and all looked good. We swapped to the other 220 Volt plug in the back and it trips as well.
Any ideas on this? We are not sure if the start box or the supply itself is the issue.


Thank you, Jim

James Mitchell
Specialty Trades Technician
Dept. of Electrical and Computer Engineering
North Carolina State University Nanofabrication Facility (NNF)
MRC RM243A Box 7911
2410 Campus Shore Dr., Raleigh, NC 27606
jtmitch5 at ncsu.edu<mailto:jtmitch5 at ncsu.edu>
Desk: 919-515-5394
Cell: 919-717-7325




--
Thank you, Jim

James Mitchell
Specialty Trades Technician
Dept. of Electrical and Computer Engineering
North Carolina State University Nanofabrication Facility (NNF)
MRC RM243A Box 7911
2410 Campus Shore Dr., Raleigh, NC 27606
jtmitch5 at ncsu.edu<mailto:jtmitch5 at ncsu.edu>
Desk: 919-515-5394
Cell: 919-717-7325


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