NEC P8000 Printer Repair Secrets

by:cycjet     2020-08-26
If the complaint for NEC P8000 printer any missing line across the printout, immediately we will suspect the printer head or the ribbon as well as sometime the ribbon mask. Among so many brands of dot matrix printers, only this model has one common fault which is the printer head and the printer driver ic's indulged.
If you just replace the printer head without changing the main board or checking the printer driver ic for short circuit, then it ? s likely high that after you switch it on the printer, the printer head would immediately breakdown again.
Thus it's shrewd for you, if you ever comes across this associated with printer, besides replacing the printer head, you must check the six printer driver ic on claims board. When it comes to printer head, you obtain a new one or send to an experienced professional to refurbish it. Now the real question is, how can we check or test the printer driver ic's? It's simple, remove the main board and you will note that factors six ic's that have similar part number which will be the STA476A.
If one example of these shorted, heading short the printer head pin. Each printer driver ic control 4 pins thus six printer ic would look out 24 hooks! That's why in the market, they called it as 24 pin dot matrix printer.
Normally I would personally use huntron tracker to match the signature between a high-quality and careless ic. It is very easy to get the culprit when you're able to compare men and women. Using an analog meter also can the task. Compare the resistance of all the printer driver ic's leg, if possibilities any shorted printer driver ic, the meter would register the reading and usually the needle would kick to most far directly.
Sometimes it may be more than one ic shorted. Once a person determined which ic that gave way, solder versus each other and replace with a 1 and anyone might have just completed a printer repair project.
Whether you are checking the NEC P8000 printer or any regarding dot matrix printers, use the procedure above to test out all the printer driver ic an individual switch in the printer. This not only saves larger printer head, it you will save money of not to be able to buy a mainboard.
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