Author Topic: ILX Lightwave LDT-5910(B) Manual with schematics request  (Read 2162 times)

0 Members and 1 Guest are viewing this topic.

Offline mimmus78

  • Supporter
  • ****
  • Posts: 676
  • Country: it
ILX Lightwave LDT-5910(B) Manual with schematics request
« on: May 09, 2018, 03:58:13 pm »
I brought one of this TEC controller at 50 EUR from ebay and I found that the original manual published here:

http://www.lightwavestore.com/product_datasheet/OTI-LDC-020C_pdf4.pdf

is missing the schematics (pages 61-65) ...

Did someone has the original manual with schematics?

 

Offline picburner

  • Frequent Contributor
  • **
  • Posts: 287
  • Country: it
Re: ILX Lightwave LDT-5910(B) Manual with schematics request
« Reply #1 on: May 15, 2018, 05:10:58 am »
Even the operator/maintenance manual on sale at a well-known English seller does not have the schematic diagrams....
The only hope is in the good heart of someone in the factory who sends you the missing pages...
 

Offline Echo88

  • Frequent Contributor
  • **
  • Posts: 629
  • Country: de
Re: ILX Lightwave LDT-5910(B) Manual with schematics request
« Reply #2 on: July 11, 2018, 04:17:54 pm »
I just bought one LDT-5910B which is set to 110V line voltage and the manual is lacking the description how the 3 zero-ohm-jumpers need to be set on the power supply board to change it to 230V line voltage. If anyone owns said device with the jumpers set to 230V: could you please make a picture so i can change those jumpers?

 

Offline mimmus78

  • Supporter
  • ****
  • Posts: 676
  • Country: it
Re: ILX Lightwave LDT-5910(B) Manual with schematics request
« Reply #3 on: July 18, 2018, 04:15:57 pm »
This is how is set my unit for 230V ... anyway there is a page on the manual for this ...

Inviato dal mio ONEPLUS A5010 utilizzando Tapatalk

« Last Edit: July 18, 2018, 04:24:43 pm by mimmus78 »
 

Offline mimmus78

  • Supporter
  • ****
  • Posts: 676
  • Country: it
Re: ILX Lightwave LDT-5910(B) Manual with schematics request
« Reply #4 on: July 18, 2018, 04:18:29 pm »
My unit has not thermistor current selector switch ... some switch pins are wired to the thermistor port that's a db9 and not binding posts
 ... it seems a user modification but flat cable used inside for connection is very similar to the one used in other places ... don't know.


« Last Edit: July 18, 2018, 04:28:54 pm by mimmus78 »
 

Offline Echo88

  • Frequent Contributor
  • **
  • Posts: 629
  • Country: de
Re: ILX Lightwave LDT-5910(B) Manual with schematics request
« Reply #5 on: July 18, 2018, 04:49:21 pm »
Thanks for the pictures, but your LDT-5910 is not identical to my LDT-5910B, were the picture on how to set the jumpers to vary the mains voltage is missing.
But i seem to have found the problem on my device: the transformers are defective. After figuring out the schematic of the power supply, desoldering the transformers and supplying the needed voltages i could get it to work for the most part. Im only missing the info which voltages are needed for +UN and -UN which are needed for the TEC-Output-Voltage i presume.
 

Offline mimmus78

  • Supporter
  • ****
  • Posts: 676
  • Country: it
Re: ILX Lightwave LDT-5910(B) Manual with schematics request
« Reply #6 on: July 19, 2018, 10:38:45 am »
Yes my unit is quite unusual ... it has this modification for thermistor and it has the GPIB interface even if is not the B version.
 

Offline Octane

  • Regular Contributor
  • *
  • Posts: 102
  • Country: us
Re: ILX Lightwave LDT-5910(B) Manual with schematics request
« Reply #7 on: January 13, 2021, 03:20:50 am »
Hi,

I just got a dead LDT-5910B. It seems that I have a similar issue as Echo88: The fully potted Precision Inc. transformer which is supposed to supply voltage to the 7815 and 7915 is broken. Thus my +15V and -15V rails are dead. The second output which provides about 10VAC for the raw 13VDC output, from which also the +5VDC for the digital section are generated is still working. The second transformer (non-potted) seems fine and provides +UN as +10.7V and -UN as -10.7V (after the FBR, obviously).

Does anybody have any information about the transformer? I guess I need to find another 5910B which I can salvage the transformer from, any other ideas?

Thanks,
Michael

Edit: Got some stuff wrong, corrected it.
« Last Edit: January 13, 2021, 03:44:00 am by Octane »
W4MFT
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf