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Mono Laser Printer ML-451x / 501x series ML-451xND/ ML-501xND (Ver 1.01) SERVICE MANUAL Mono Laser Printer Contents 1. Precautions 2. Product Specifications and Description 3. Disassembly and Reassembly 4. Alignment and Troubleshooting 5. System Diagrams 6. Reference Information Refer to the service manual in the GSPN (see the rear cover) for more information.
High voltages and lasers inside this product are dangerous. This product should only be serviced by a factory trained service technician. 2) Use only Samsung replacement parts. There are no user serviceable parts inside the product. Do not make any unauthorized changes or additions to the product as these could cause the product to malfunctions and create an electric shocks or fi re hazards.
Take care not to cut or damage the power cable or plugs when moving the machine. 9) Use caution during thunder or lightning storms. Samsung recommends that this machine be disconnected from the power source when such weather conditions are expected. Do not touch the machine or the power cord if it is still connected to the wall socket in these weather conditions.
1.2.4. Assembly and Disassembly precautions 1) Replace parts carefully and always use Samsung parts. Take care to note the exact location of parts and also cable routing before dismantling any part of the machine. Ensure all parts and cables are replaced correctly. Please carry out the following procedures before dismantling the product or replacing any parts.
3.1.1. Precautions when assembling and disassembling • Use only approved Samsung spare parts. Ensure that part number, product name, any voltage, current or temperature rating are correct. Failure to do so could result in damage to the machine, circuit overload, fire or electric shock.
• To resolve the error, look at the error message and its instructions from the troubleshooting part. • You also can resolve the error with the guideline from the computers’s Samsung Printer Status or Smart Panel program window. Status Description The machine is off-line.
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High 2 (3,280 ft) High 1 4 Normal • For windows user, use the Samsung Easy Printer Manager. • For Macintosh, Linux, or Unix OS user, use the Smart Panel. NOTE • If your machine is connected to the network, you can set the altitude via SyncThru™ Web Service.
Understanding Samsung Easy Printer Manager To open the program: Select StartPrograms or All Programs > Samsung Printers > Samsung Easy Printer Manager. The Samsung Easy Printer Manager interface is comprised of various basic sections as described in the table that follows: Area Description Printer List The printer list displays the installed printer icons on your computer.
Check the operating system(s) that are compatible with your machine (see Basic guide). Samsung Printer Status overview If an error occurs while operating, you can check the error from the Samsung Printer Status. Samsung Printer Status is installed automatically when you install the machine software.
Smart Panel is a program that monitors and informs you of the machine’s status, and allows you to customize the machine’s settings. For Macintosh, Smart Panel is installed automatically when you install the machine software. For Linux, you can download Smart Panel from the Samsung website. 4-21...
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► Symptom Toner sensor is defective. The machine can’t detect the sensor signal in the imaging unit normally. ► Troubleshooting method 1) Install the genuine samsung imaging unit. 2) If the imaging unit is already installed, check the following. •...