2-24 Phaser 7300 Color Printer Service ManualService FlowchartThe Service Flowchart outlines one possible approach to troubleshooting and repairof the printer. The Service Flowchart is an overview of the path a service techniciancould take, using this technical manual, to service the print engine and options. If youchoose not to use the Service Flowchart, it is recommended that you start at theappropriate troubleshooting table and proceed from there.Always follow the safety measures detailed in the front of the manual when servicingthe printer. See “Service Safety Summary” on page vi of this manual.Step 1: Identify the Problem:1 Verify the reported problem does exist.2 Check for any error codes and write them down.3 Print normal customer prints and service test prints.4 Make note of any print quality problems in the test prints.5 Make note of any mechanical or electrical abnormalities present.6 Make note of any unusual noise or smell coming from the printer.7 Print a Usage Profile Report, if the printer is able to print.8 View the fault history under the Service Tools Menu9 Verify the AC input power supply is within proper specifications by measuring thevoltage at the electric outlet while the printer is running.Step 2: Inspect and Clean the Printer:1 Switch OFF printer power.2 Disconnect the AC power cord from the wall outlet.3 Verify the power cord is free from damage or short circuit and is connected properly.4 Remove the Imaging Unit and protect it from light.5 Inspect the printer interior and remove any foreign matter such as paper clips,staples, pieces of paper, dust or loose toner.■ Do not use solvents or chemical cleaners to clean the printer interior.■ Do not use any type of oil or lubricant on printer parts.■ Use only a type II approved toner vacuum.6 Clean all rubber rollers with a lint-free cloth, dampened slightly with cold water andmild detergent.7 Inspect the interior of the printer for damaged wires, loose connections, tonerleakage, and damaged or obviously worn parts.8 If a toner cartridge appears obviously damaged, replace with a new one.Step 3: Find the Cause of the Problem:1 Use the Error Messages and Codes and troubleshooting procedures to find thecause of the problem.2 Use Diagnostics to check printer and optional components.3 Use the Wiring Diagrams to locate test points.4 Take voltage readings at various test points as instructed in the appropriatetroubleshooting procedure.5 Use the Service Test Prints to isolate problems with the Image Processor Board.Step 4: Correct the Problem1 Use the Parts List to locate a part number2 Use the Removal and Replacement Procedures to replace the part.Step 5: Final Checkout1 Test the printer to be sure you have corrected the initial problem and there are noadditional problems present.
