Service Manual5-15. PROBLEM SOLVINGDiagnosticsTroubleshootingThis section is given to locate and resolve the causes of troubles so as the product is alwaysin good working condition. The trouble modes, relevant units and maintenance methods aredescribed below.When a problem occurs, troubleshoot the problem according to the symptoms it shows.Check the following first:1. Is anything being operated improperly?2. Does the problem recur, or is it regular?The sections, 5.1.1 to 5.1.4, show the troubleshooting flowcharts.The causes and maintenance methods for each failure mode are described in Table 5.1through 5.11