Ricoh ft 4215 service manual
These ferrite cores had no effect on the RAM reset problem for the Pigeon. Because, to minimize the flactuation of. Please correct your parts catalog as follows: 1. Addition NRG America version only.
Rank: A : Replace with new parts immediately. B : Replace with new parts at time of repair. When customers open and close the transport guide plate many times for jam removal, the magnet catches with adhesive tape on the guide might peel off. To prevent this, the magnet catches have been fixed to the guide plate by screws as shown. To prevent the AC harness from being damaged by the edge of the front side plate, a seal AA [A] has been added to cover the edge.
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Main Motor 5. Development Clutch Solenoid 6. Toner Supply Clutch 7. Sensor 8. Color Toner End Sensor 9. Pick-up Roller Release Solenoid Manual Feed Table Switch Color Switch Paper Lift Clutch Paper Feed Clutch Solenoid Registration Clutch Paper Size Switch.
Paper End Sensor Paper Lift Sensor Registration Sensor Total Counter ID Sensor Board Fusing Lamp Quenching Lamp QL Auto Image Density Sensor Fusing Thermistor Toner Overflow Sensor Fusing Thermofuse Exit Sensor Lens Motor. Operation Panel Board Optics Thermoswitch Exposure Lamp Cover Safety Switch Main Switch Exhaust Blower Motor Drum Anti-condensation Heater Option Transformer Main Transformer AC Drive Board Main Motor Capacitor Main Board Optics Cooling Fan Motor.
Drives all the main unit components except for the optics unit and fans. Removes heat from around the fusing unit and blows the ozone built up around the charge section to the ozone filter. Drives all ac motors, the exposure lamp, fusing lamp, quenching lamp, and exhaust blower motor. Rectifies 26 and 10 Vac input and outputs dc voltages. This board is required when the document feeder is installed.
Discharge the drum outside of the image area. Provides high voltage for the charge corona, grid, and the development roller bias. Steps down the wall voltage to 26 Vac and 10 Vac. This transformer is required when the document feeder is installed. When this copier is plugged in and the main switch is turned off, ac power is supplied via the ac drive board to the anti-condensation heater.
The RAM board has a back up power supply dc battery for the service program mode and misfeed job recovery. When the main switch is turned on, the ac power supply to the anti-condensation heater is cut off and ac power is supplied to the ac drive board. The main and optional transformers receive wall outlet ac power through the ac drive board. The main transformer outputs 28 volts ac to the main dc power supply board.
The optional transformer outputs 10 volts ac and 26 volts ac to the optional dc power supply board. The zero cross signal is supplied to the copier main board. The main dc power supply board has a scanner motor drive circuit. The scanner motor drive circuit produces scanner motor drive signals. The copier main board supplies dc power to all copier dc components except the scanner motor.
The main board sends the control signals to the lens motor and to the scanner motor drive circuit on the main dc power supply board. When the main board receives power, it activates the power relay RA which then supplies ac power to the fusing lamp drive circuit, and the exposure lamp drive circuit on the ac drive board.
The exhaust blower motor begins rotating at low speed. The fusing lamp drive circuit receives a trigger signal from the main board and the fusing lamp lights. The exposure lamp does not turn on until the main board sends a trigger pulse to the exposure lamp drive circuit. When the Start key is pressed, the main board energizes the main motor relay RA Then, the main motor and the quenching lamp turn on and the exhaust blower starts rotating at high speed.
When the main switch is turned off, power is cut off to the main board and to RA, and the drum and optional anticondensation heaters are turned on. The exposure lamp and the fusing lamp power lines are completely disconnected from the line voltage. The cleaning blade [A] removes any toner remaining on the drum [B] after the image is transferred to the paper.
The removed toner falls into the cleaning unit. The toner collection roller [C] carries the used toner to the used toner tank.
The light of the quenching lamp [D] neutralizes any charge remaining on the drum in preparation for the next copy cycle. The cleaning blade releases when the release knob is pressed. This prevents the drum from being damaged when the cleaning unit is removed or installed. The rotation of the main motor is transmitted to the cleaning unit through the main motor gear [A], the relay gear [B], and the cleaning drive gear [C].
The gear [D] driven by the cleaning drive gear passes the rotation to the toner collection roller gear [E]. The cleaning blade [F] is mounted in the center of the blade and is tilted to apply even pressure. Registration Sensor Registration Clutch. When the main switch is turned on, the CPU checks these two sensors for initial misfeed. During the copy cycle, the CPU performs three kinds of misfeed detection: J1: Checks whether the registration sensor is actuated within 10 pulses 40 milliseconds after the registration clutch turns on.
Misfeed Location indicator "B" turns on. J2: Checks whether the exit sensor is actuated within pulses 2. Misfeed Location indicator "C" turns on. J3: Checks whether the copy paper has passed through the exit sensor 2. Misfeed Location indicator "D" turns on. Front: 70 cm Back: 10 cm 3. Right: 60 cm Left: 30 cm Do not set anything on the power cord. NOTE: a Be sure to ground the machine. Do not connect the grounding wire to a gas pipe.
NOTE: 1. The A copier does not have a duplex unit as an option. The A copier does not require the dc power supply unit. Key Counter Holder Refer to page Optics Anti-condensation Heater Refer to page Color Development Unit Refer to page to Receiving Tray Cassette - Small Cassette - Large Paper Size Decal Paper Size Actuator Outer Decal - Symbol Explanation Multilingual Decal Europe only Operating Instructions Except Europe New Equipment Condition Report Get 1 for every time someone downloads your manual.
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