Service Manuals, User Guides, Schematic Diagrams or docs for : epson printer EPSON Stylus Color 400 SM 400CH5

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                                                                                                             Chapter 5
                                                                                                       Troubleshooting

5.1 Troubleshooting....................................................................................................5-1
5.2 Unit Level Troubleshooting .................................................................................5-3
     5.2.1 Printer does not operate at power on................................................................................... 5-4
     5.2.2 Error is detected ..................................................................................................................... 5-5
     5.2.3 Failure occurs during printing .............................................................................................. 5-6
     5.2.4 Printer does not feed the paper correctly ............................................................................ 5-7
     5.2.5 Control panel operation is abnormal.................................................................................... 5-8
5.3 Unit Repair C206 PSB/PSE Board .......................................................................5-9
     5.3.1 Unit Repair - C206 Main Board ............................................................................................ 5-11
5.4 Repair of the Printer Mechanism.......................................................................5-13
EPSON Stylus Color 400 Service Manual

5.1 Troubleshooting
The printer may exhibit different symptoms for the same problem, which makes troubleshooting more
difficult. This section, however, provides simple and effective ways to facilitate troubleshooting.
The following flowchart illustrates the main steps of the trouble shooting process.


                                                   START




                                         Unit Level Troubleshooting




                     Unit Repair                  Unit Repair              Unit Repair
                     (C206 PSB/PSE)               (C206 Main)              Printer Mechanism




                                       Disassemble and Adjustment




                                                    END
                            Figure 5-1. Troubleshooting Process Flowchart



                       Table 5-1. Motor Resistance and Measurement Procedure
             Motor Name              Location               Check Point               Resistance
              CR Motor            CN6(C206 MAIN)            1-pin & 3-pin,          7.8 Ohms 

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