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Содержание D259

Страница 1: ...1 This course explains how to service the Lef C1 black and white copiers To learn about these models please study the user s guide and the field service manual in addition to this TTP...

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Страница 3: ...The in the model name refers to the fact that this is an A4 machine with A3 capability 3...

Страница 4: ...Smart Operation Panel version is Cheetah G2 The machine is quite compact and some parts are a bit difficult to access Silent mode is a new feature It will be explained in more detail later 4...

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Страница 6: ...A more detailed comparison follows later 6...

Страница 7: ...Step 1 is for saving space In both cases the paper type is limited The customer can use only plain paper because the angle of feeding is sharp 7...

Страница 8: ...Silent mode is a new function It will be explained later 8...

Страница 9: ...Fan Control will be explained later 9...

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Страница 12: ...There is no platen cover option 12...

Страница 13: ...13 Noise level 59 dB in normal mode 55 dB in silent mode...

Страница 14: ...See parts catalog for the part number of Grease G 1077 14...

Страница 15: ...Condition A4 LT long edge feed 5 image coverage ratio 2P J APV is 2k Month 15...

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Страница 17: ...achine will make in total 120K 2Kx60 prints during these 5 years These are called yield parts because you will not have to replace them within the machine s life if the APV is normal 2k per month You...

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Страница 20: ...The blue lines indicate duplex feed 20...

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Страница 29: ...The internal temperature sensor controls the rotation of the intake and exhaust fans 29...

Страница 30: ...U Power Supply Unit DHB Dehumidification Heater Board MKB Meter Click Board for installing the meter click device HVP High Voltage Power supply HDD Hard Disk Drive BiCU Base and Imaging Control Unit 3...

Страница 31: ...OPU Operation Panel Unit SCN Scanner Unit 31...

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Страница 38: ...This section covers the main points of the installation procedure For the complete procedure see the service manual 38...

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Страница 45: ...The operation panel also has a USB slot The mini USB slot to the left of the SD card slots is only for models on sale in Japan 45...

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Страница 48: ...As you can see in the diagram all modules for paper feed are driven by one motor This reduces the noise compared to using a number of motors The inner gear prevents noise leaking from the motor 48...

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Страница 50: ...If you forget to apply the grease noise will occur The position which applys the grease will be explained later 50...

Страница 51: ...Red lines show the parts that use the labyrinth structure These locations are where noise is likely to leak 51...

Страница 52: ...The silencer has many small holes the noise resonates in the holes and then disappears as a result A silencer is attached to the laser unit the paper exit and other areas where noise may occur 52...

Страница 53: ...Changes in paper feed speed are not shown in the above table 53...

Страница 54: ...To reduce the noise the intake fan and exhaust fan are controlled with temperature sensors The detected temperature affects the speed of fan rotation as shown above 54...

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Страница 57: ...inal size can be detected with the registration sensor and the width sensor Length can be detected by how much time it takes for the original to arrive at the registration sensor from the initial posi...

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Страница 69: ...When the platen cover detects the change from OFF from ON the APS sensors detect the original size 69...

Страница 70: ...Legal size is not supported because the width of the contact glass is smaller than the width of Legal 70...

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Страница 72: ...The exposure glass and the scale are just connected by the seal so it may fall off when you lift it 72...

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Страница 79: ...There are no SP adjustments to make after installing the new unit 79...

Страница 80: ...t Insert it along the left side If you do this incorrectly and then it becomes completely hidden you cannot pull it out easily You have to remove the PCDU and then you can pull it out from the right s...

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Страница 82: ...First of all the structure of the PCDU for this product is the same as usual for an A3 B W MFP It is almost the same as the K C4 82...

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Страница 84: ...The motor speed will normally not exceed the regulation speed 84...

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Страница 87: ...This model uses a counter blade system 87...

Страница 88: ...The PCL is located in the transfer unit 88...

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Страница 90: ...The TD sensor is a mu sensor 90...

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Страница 106: ...Each thresholds can be automatically changed by executed the following SP 106...

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Страница 109: ...No SP settings are needed after installing a new PCDU 109...

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Страница 117: ...The spring is always pulled the same amount when the tray is inserted regardless of the amount of paper in the tray So there is pressure between the top of the stack and the feed roller 117...

Страница 118: ...When the paper tray is drawn out with no paper in the tray the paper end feeler is not caught in the paper tray due to its shape 118...

Страница 119: ...The pick up roller is lowered by roller rotation There is no solenoid 119...

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Страница 122: ...You may have to remove this unit to clean the registration sensor 122...

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Страница 134: ...SP7 622 115 is the only SP to clear the counter for yield parts 120K 134...

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Страница 138: ...The exit roller and exit sensor are included in the fusing unit 138...

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Страница 140: ...The next slide explains how this mechanism is controlled with a solenoid 140...

Страница 141: ...The solenoid turns off when the center thermistor reaches 80 degrees C 141...

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Страница 145: ...If you remove the bushing the spring length is reduced by the length of the bushing The pressure is reduced by 10 145...

Страница 146: ...off may cause the fluorescent lights to flicker This problem can be lightened by changing the setting of SP1 135 002 from 0 to 1 If you do this fusing capability may decrease because the power supply...

Страница 147: ...The center thermistor is for the fusing lamp 860 W The end thermistor is for various other control mechanisms 147...

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Страница 153: ...s according to paper type When printing on Middle Thick or Thick Paper and when printing in silent mode the process speed is lower Thin 52 59gsm Plain 1 60 74 Plain 2 75 81 Middle thick 82 105 Thick 1...

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Страница 156: ...The thermostat used in this model has a higher thermal responsiveness than those used in previous models Therefore the temperature of the hot roller will be kept lower 156...

Страница 157: ...SP7 622 115 is the only SP to clear the counter for yield parts 120K 157...

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Страница 165: ...If you forgot to apply the grease it may occur the noise and so on like the case of other greases How to apply the grease in each parts please refer to the service manual 165...

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Страница 167: ...Regarding to detailed section descriptions this optional bank is similar to the PB2020 used with Bc C1 167...

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Страница 174: ...174 The End...

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