Introduction
This manual provides essential information for the setup, operation, and maintenance of your Sharp MX-M503N Monochrome Laser Multifunction Printer. Please read this manual thoroughly before using the device to ensure proper functionality and to prevent damage.

Figure 1: Front view of the Sharp MX-M503N Monochrome Laser Multifunction Printer, showcasing its compact design with multiple paper trays and a top-mounted document feeder.
Product Overview
The Sharp MX-M503N is a versatile A3-sized monochrome multifunction device designed for small to medium workgroups. It integrates printing, copying, and scanning functionalities into a single unit.
Key Features:
- Monochrome Laser Multifunction Printer (MFP)
- Print, Copy, Scan capabilities
- Print speed up to 50 pages per minute (ppm)
- Standard automatic duplex copying and printing
- 8.5-inch Color Display for intuitive operation
- Standard paper capacity of 1,100 sheets (2 x 500-sheet drawers + 100-sheet bypass)
- 150-sheet Document Feeder with original size detection
- Network connectivity via RJ-45 Ethernet 10/100/1000 Base-T
Setup
Unpacking and Placement:
- Carefully remove the printer from its packaging. Due to its weight (approx. 210 lbs), it is recommended to use appropriate lifting equipment or assistance.
- Place the printer on a stable, level surface capable of supporting its weight. Ensure adequate ventilation around the unit.
- Remove all protective tapes and packing materials from the exterior and interior of the printer, including paper trays and the document feeder.
Connecting Power and Network:
- Connect the power cord to the printer's power input and then to a grounded electrical outlet.
- For network printing and scanning, connect an Ethernet cable from the printer's RJ-45 port to your network router or switch.
- Optionally, for direct connection, use a USB 2.0 cable to connect the printer to a computer.
Loading Paper:
The printer supports paper sizes up to A3 (11" x 17").
- Open the paper drawers (Tray 1 and Tray 2).
- Adjust the paper guides to fit the size of the paper being loaded.
- Load paper into the trays, ensuring it is flat and not exceeding the maximum fill line.
- The 100-sheet bypass tray can be used for special media or smaller quantities.

Figure 2: Close-up view of the Sharp MX-M503N's control panel, featuring the 8.5-inch color display and various function buttons, along with the top-mounted automatic document feeder.
Operating Instructions
Basic Copying:
- Place the original document face-up in the document feeder or face-down on the scanner glass.
- On the 8.5-inch color display, select the "Copy" function.
- Adjust settings such as quantity, paper size, and duplexing as needed.
- Press the Start button to begin copying.
Printing from a Computer:
- Ensure the printer drivers are installed on your computer. Drivers can typically be found on the manufacturer's support website.
- From your application, select "Print" and choose the Sharp MX-M503N as your printer.
- Configure print settings (e.g., paper source, duplex, quality) in the printer properties dialog.
- Click "Print" to send the job to the printer.
Scanning Documents:
- Place the document on the scanner glass or in the document feeder.
- On the printer's display, select the "Scan" function.
- Choose your scan destination (e.g., network folder, email, USB).
- Adjust scan settings such as resolution, color mode, and file format.
- Press the Start button to initiate the scan.
Maintenance
Routine Cleaning:
- Regularly wipe the exterior of the printer with a soft, damp cloth.
- Clean the scanner glass and the document feeder rollers with a lint-free cloth and a mild glass cleaner to ensure clear scans.
Toner Cartridge Replacement:
- The printer's display will indicate when the toner cartridge needs replacement.
- Refer to the specific instructions provided with your replacement toner cartridge for safe and proper installation.
Paper Jam Clearance:
- If a paper jam occurs, the display will show an error message and indicate the location of the jam.
- Carefully open the indicated covers or trays and gently pull the jammed paper in the direction of the paper path. Avoid tearing the paper.
- Close all covers securely after clearing the jam.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Printer not powering on | Power cord disconnected; Power outlet issue | Check power cord connection; Try a different outlet |
| No print output | Paper jam; Out of paper; Low toner; Network connectivity issue | Clear paper jam; Load paper; Replace toner; Check network cable/settings |
| Scans are blurry or streaky | Dirty scanner glass or rollers | Clean the scanner glass and document feeder rollers |
| Error message on display | Specific internal issue | Note the error code and consult the full service manual or contact support. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | Sharp MX-M503N |
| Functions | Copy, Print, Scan (Network Print, Network Scan, Document Filing) |
| Print Technology | Monochrome Laser |
| Print/Copy Speed | Up to 50 ppm (pages per minute) |
| Print Resolution | 600 x 600 dpi |
| Paper Capacity (Standard) | 1,100 sheets (2 x 500-sheet drawers + 100-sheet bypass) |
| Maximum Paper Size | A3 (11" x 17") |
| Duplexing | Automatic (Standard) |
| Document Feeder | 150-sheet DSPF (Duplex Single Pass Feeder) |
| Display | 8.5-inch Color LCD Touch Control |
| Connectivity | RJ-45 Ethernet (10/100/1000 Base-T), USB 2.0 |
| Hard Drive | 80GB |
| Dimensions (W x D x H) | Approx. 25.5" x 27.5" x 38" |
| Weight | Approx. 210 lbs |
| Condition | Refurbished |
Warranty and Support
Warranty Information:
This Sharp MX-M503N printer comes with a 30-Day Labor & Parts Warranty. This warranty covers defects in materials and workmanship under normal use during the specified period. Please retain your purchase receipt as proof of warranty.
Customer Support:
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact your vendor or the authorized Sharp service provider. Have your model number (MX-M503N) and serial number ready when contacting support.
For additional resources and driver downloads, visit the official Sharp support website.





