Question about Office Equipment & Supplies
Losing power at power supply, no blown fuse, caps, ect.. fast to power, with DVM connected I get 36V/5V and a few seconds no volts, bench testing does same thing, replaced KA3842 with new, same problem, tested power switch and cord, np found, tested bridge diods - good,I've tested all I could and all seems to be good, ? Maybe switching transformer, cannot test it. Need schematic of power supply if one has a copy to share, Power Supply P/N 1434518. The power seems to be draining down like a capacitor would when DVM is hooked into it.
Try to figure out any short circuit that causing power supply to come in safe mode , just give me more details about power supply , what kind of power supply is it?
Posted on Apr 13, 2014
Testimonial: "Lexmark Power Supply P/N 1434518 EC NO. 533136 Date Code 2/7/93 S/N B521456 It was built for Lexmark by Samsung. Input: 100-240 50-60Hz 2.0A OutPut: +34V DC 1.15A - +5V DC 2.2A From my Findings, all these parts are "OBSOLETE" Switching Transformer. Part# SC-9224 cannot be found or an equivalent, The "TYNO58", "L4960" out of circuit test show to be good. Finding a "SHORT" like this on "SMPS" is very difficult with out an schematic, to many parts to remove. Thanks for replying"
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Posted on Jan 02, 2017
SOURCE: IBM Wheelwriter 30 Series II
On the l. side of the keyboard there are keys labeled store, play & delete. Press & hold store then type an address 01 thru 99 release store and type whatever you want. Upon completion press store again. To play it back press play and the address, to clear delete and address.
Posted on May 16, 2008
The delay print and justify are both on the far rt. of the keyboard pressing these keys turns the features off and on. if this dosen't do it you're keyboard is bad.
Posted on Aug 02, 2008
Open the upper cover, remove the platen (roller) there is a latct on each side that has to be pressed down, after the platen is out thetre are two latches one on each dide just inside the the sides of the case pull them to the front, flip the margins inside and lift the case, give the motor a little push, if it starts get a can of WD40 and spray everything inside the T/W that moves.
Posted on Oct 24, 2008
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