Front View

External Controls (Copy Illum pot varies brightness of copy lights DS1 and DS2.)

Internal View. Note all sub-assemblies remove from chassis giving easy access for servicing. If anyone needs GE-313 bulbs for the copy lamps, I have a supply ot them - $0.35 each plus shipping. (lamps inside while casng at each side under ribbon and at right).

MS3113H14C5PW	MS3116F145SW - mating plug

First challenge, plug wiring. I doped that out July second, by using an ohmmeter from J1 tracing back through to the outputs of the Captor Corp. line filter in the unit. Each side of the AC line passes through the unit. The socket for the power is incorporated in the filter, and the filter is well buried in the unit, so this was the easiest way. It took a while, as with the filter buried, it was almost impossible to get a lead on one of the outputs of the filter to check from it back to the power connector pins. The wiring on the Amphenol MS3113H14C5PW is as follows:

Pins A, B - AC line
Pin C - Ground.

So far, due to the inaccessability of the back of the connector, it is not known what, if anything D and E are used for. It is possible that they might be used in conjunction with the ground pin as loop I/0's.

I tried the wiring out first on one of my units, by using miniature octal tube socket pins wired onto an AC cord with heat shrink tubing applied to prevent short circuits. Turned it on, and away it went, but defaulted in an error state, meaning it didn't pass its microprocessor test. (July 9th. I worked on, and repaired that problem the lazy way - moving its good print head over into one of my newly received head-less parts units. It was a lazy way to do it, but much faster than switching the microprocessor, controller and memory boards back and forth to find the guilty one).Now, both units work as they should.

Before repairing the other unit, I then tried power on my second unit, and voila, it came to life. This unit had several smaller problems solved through swapping from another unit. When it boots up, it will print out C/F 1999A, and on the next line, CC E4 0E C8, the results of the power on test (as does the other too, now). Following this, it will echo any text printed to the keyboard, or print out contents saved to its memories..

The ribbon, of course was dried out, as expected. The copy light bulbs (313 subminiature 28 volt bulbs - Supplier) were burned out on this unit and were swapped out. The print enable switch on the keyboard was broken (but repairable), so I simply swapped out the keyboard from another unit for now. I will repair the other keyboard some day I am looking for something to do. The fan is lethargic and slow to start, but I do have another to put in it, or may simply lubricate it. I turned on the print switch on the keyboard, then held down the message key, and inputted a short message. Voila, it printed out as hoped for.

Needless to say, the temporary AC connection will be replaced ASAP with the proper mating connector MS3116F145SW as verified by Jack Rubin (shown above right). . A source for these has been found - Newark Electronics p/n 31R5706, Souriau MS3116F14-5SW, and one is finally on the way.

Anyone recognize this ribbon cartridge? One of my original ones bears the number 6017138, but so far no matches. The military must have a ton of spares somewhere! Pull up on tab above grill to remove, press down tab to lock cartridge back in position. I have just been informed these cartridges may have been made by Wordex in San Leandro, Cal. With some difficulty I finally found an email address with the help of Kevin Greene, and I have contacted them to see if I can verify this, and find out if they have any current stock. It is only a chance, but worthwhile following up on.

To the left, the print head, made by Saphintec SA. Numbers on the print head are 1720.3489 and PSM 1002. Thankfully, the heads are both in good condition - I am only posting its photo in the hope it might help in identifying a ribbon cartridge for it (though I could in reality use another, as I do have two machines which don't have heads, one of which is a good candidate for rebuilding, and if I can fix it, I have someone in mind who I am going to give it to). The cartridge has a shield to prevent the operator from burning himself on the print head cooling fins. These could get quite hot. A replacement cartridge doesn't necessarily need to have this. I would love to get a couple more ribbon cartridges, even if dried or worn out and only a candidate for re-inking.

July 08 2010 - I am making a dedicated re-inker specifically for these machines - I will soon be in the position of being able to re-ink your cartridge. This will work for either AN/UGC-504 and AN/UGC-136 cartridges as they are identical. All you will need to do is send me your cartridge, I will re-ink it using proper ink and return it. As I have no spare cartridges, I will be unable to send you an inked one until I receive yours. I will announce here when I have the inker built and tested. If and when your ribbon wears too thin for re-inking, you can buy a cartridge for another dot matrix printer with the same width ribbon and transfer that ribbon into your cartridge - messy, but it works!.

July 09 2010 - I have received two more of these units (both without print head) for spare parts use. These, like the first two, were brought over from Halifax by a trucker friend who does a daily run to Halifax. I picked them up from him when he arrived back in Charlottetown at 4:00 a.m. It makes for a long day when I work until Midnight, head home for a couple of hours, then back into town to meet the truck, but does save on shipping costs..