This is a technical manual for the needle printer NX-650, which introduces its general specifications, operating principles, tuning, partial replacement, maintenance and lubrication, troubleshooting, etc.
This service manual provides detailed information on the Star NX-650 dot‑matrix printer, including general specifications, operation principles, adjustment procedures, part replacement, maintenance, lubrication, fault diagnosis, and a complete parts list. It is intended for technicians performing periodic checks and repairs.
The document also describes the printer's parallel and serial interfaces, electrical characteristics, environmental limits, and optional accessories such as the SPC‑8K serial‑to‑parallel converter. Schematics and component listings for the CPU board and interface boards are included. This manual is written in Chinese.
| Print head needle count | 24 |
|---|---|
| Print head life | 2,000,000 dots per needle |
| Power supply | AC220‑240V ±15%, 50/60 Hz |
| Power consumption (standby) | 17 W |
| Power consumption (draft printing) | 63 W |
| Operating temperature | 5 °C – 35 °C |
| Storage temperature | -30 °C – 65 °C |
| Parallel interface standard | Centronics |
| Serial interface baud rates | 300 – 19200 bps |
The printer uses a Centronics parallel interface.
The serial interface supports baud rates from 300 to 19200 bps.
It consumes 17 W while in standby.