This document describes the features and characteristics of Lexmark™ T650, T650n, T652dn, T654dn, and T656dne printers.
This service manual provides detailed instructions for diagnosing, maintaining, and repairing Lexmark T650 series printers, including the T650, T650N, T652DN, T654DN, and T656DNE models. It contains safety notices, hardware overviews, and step‑by‑step procedures for accessing service menus and performing diagnostic tests.
The document is organized into sections such as Service Checks, Sensor Tests, Printer Setup, Hardware Tests, and Parts Catalog. It guides technicians through sensor service checks, image‑quality troubleshooting, component removal, and lubrication specifications, ensuring proper upkeep of the printer’s mechanical and electronic subsystems.
| Supported paper sizes, types, and weights | Various (see manual) |
|---|---|
| Fuser Temperature (Fuser Temp) | Specified in manual |
| Print Contrast | Adjustable |
Use the procedure described in the "Accessing service menus" section of the manual for the respective model.
Follow the steps outlined in the "Entering Diagnostics mode" section for the specific model.
The manual lists service checks for sensors such as fuser output, narrow media, duplex input, pass‑through, and envelope feeder.
Lubrication specifications are provided in the "Lubrication specifications" section near the end of the manual.