Epson 4000 Service Manual - Page 365

EPSON Stylus Pro 4000 5.2.2 PF Timing Belt Tension Adjustment This adjustment applies to all operations that have loosened the PF Timing Belt, such as "Motor Assy., PF" removal. This adjusts the belt tension to the correct tension after installation of the "Motor Assy., PF" † Tools (Required) „ Sonic Tension Meter U-505 „ A tool to pluck the timing belt (tweezers, etc.) † Utility Tools (Adjustment possible without these) „ Code Type Microphone (U-505) † Standard Value „ Standard: 17.6 ~ 21.6N † Procedure C A U T IO N Pay attention not to deform or damage the "Scale, PF" attached to the "Pulley, Roller, PF" when performing the following work. 1. Input the following belt information into the tension measurement tool. z Weight: 1.3 z Width: 6.0 z Spam: 47 2. Bring the measurment microphone of the tension meter close to the center of the timing belt (between the "Motor Assy., PF" pinion gear and the PF roller pulley). CHECK P O IN T Set the tension meter fixed tool in a position so the distance between the measurement microphone and timing belt is within approximately 5mm but not touching the timing belt. Revision B 3. Press the MEASURE button on the tension measurement tool and measure by plucking the timing belt with a tool such as tweezers. C A U T IO N „ Pluck the belt as gently as possible so it can be measured by the tension measurement tool. „ Do not allow the measurement microphone and timing belt to make contact when the belt is plucked. Measurement Microphone within 5mm Figure 5-6. Setting the Tension Measurement Tool Adjustment Mechanical Adjustment 365