The [[NLQ401]] is a Near Letter Quality printer from [[Schneider]], for use with German Schneider CPC computers. The '''SFT401''' tractor feed add-on was sold separately. Both NLQ401 and SFT401 were advertised as official Schneider expansions on the back of the german CPC6128 users manual.
== Technical General Specifications == For (detailed) general information about Amstrad/Scheider printers, see:{{AmstradPrinterLinks}}
== Hardware Notes ==
* The NLQ401 PCB can be optionally fitted with RS232 interface (25pin DSUB connector, and 75188/75189 voltage converters, this might also require a different firmware version).
* The As seen on the photo, the board contains a [[uPD7810/uPD7811|uPD7811G]] processor, but its internal ROM is disabled via MODE0/MODE1 pins, so it does act more like a ROM-less uPD7810.According to the NLQ401 service manual either uPD7810 or uPD7811 can be used.* The 16K EPROM is mapped to address 0000h..3FFFh. The MODE0/MODE1 pins are wired so that external memory uses only 14bit addresses (the upper 2bit of Port F are used as I/O signals, rather than as address bits) == Reviews == * [[CPC Schneider International]], March 1985, page 24 (german) (this review contains some misleading info; among others claiming that it can print in 11 different character heights, as well as claiming that it'd support "user defined" "8bit" characters - which probably refers to the 7-pin graphics mode)
== Manuals ==
* [[Media:Schneider NLQ401 User Manual(German)...pdf|NLQ401 User Manual (German)]]
* [[Media:Schneider NLQ401 Service Manual (German).pdf|NLQ401 Service Manual (German)]]
* [[Media:UPD7811G Datasheet.pdf|uPD7811G Datasheet]] (8bit CPU with 4096 byte ROM, 256 byte RAM, 44 I/O lines)
* http://en.wikipedia.org/wiki/Centronics - wikipedia on ''Centronics Data Computer Corporation'' (includes info about their GLP "Great Little Printer" series)
[[Category:Peripherals]]
[[Category:Printers and printer ports]]