Ricoh Mp C3000 Service Manual
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![Page 886
B230/B237/D042 6-66 SM
6.11.3 PRESSURE RELEASE MECHANISM
The pressure levers [A] put the proper pressu re to the nip between the pressure roller [B]
and fusing belt [C]. When releasing these levers , the pressure roller moves away from the
fusing belt. If a paper jam occurs in the fusi ng unit, releasing these levers make jammed
paper easily removed.
6.11.4 FUSING TEMP ERATURE CONTROL
Components
[A]: Thermostat
[B]: Thermopile
[C]: Thermostat](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-885.png "Page 886
B230/B237/D042 6-66 SM
6.11.3 PRESSURE RELEASE MECHANISM
The pressure levers [A] put the proper pressu re to the nip between the pressure roller [B]
and fusing belt [C]. When releasing these levers , the pressure roller moves away from the
fusing belt. If a paper jam occurs in the fusi ng unit, releasing these levers make jammed
paper easily removed.
6.11.4 FUSING TEMP ERATURE CONTROL
Components
[A]: Thermostat
[B]: Thermopile
[C]: Thermostat")
![Page 887
SM 6-67 B230/B237/D042
Detailed
Descriptions
[D]: Thermistor (non-contact)
[E]: Thermistor (contact)
[F]: Thermostat
[G]: Pressure roller fusing lamp
[H]: Heating roller fusing lamps
Fusing Temperatures
When the main switch turns on, the CPU turn s on the fusing lamp. The lamp stays on until
the thermistor detects the st andby temperature. Then the CPU raises the temperature to
the printing temperature.
The fusing temperature for each mode is as follows. These are set by SP 1105.
Mode...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-886.png "Page 887
SM 6-67 B230/B237/D042
Detailed
Descriptions
[D]: Thermistor (non-contact)
[E]: Thermistor (contact)
[F]: Thermostat
[G]: Pressure roller fusing lamp
[H]: Heating roller fusing lamps
Fusing Temperatures
When the main switch turns on, the CPU turn s on the fusing lamp. The lamp stays on until
the thermistor detects the st andby temperature. Then the CPU raises the temperature to
the printing temperature.
The fusing temperature for each mode is as follows. These are set by SP 1105.
Mode...")
![Page 894
B230/B237/D042 6-74 SM
6.12.2 JUNCTION GATE MECHANISM
To the Standard Tray
The paper exit rollers [A] feed paper to the standard tray. These rollers are driven by the
fusing/paper exit motor [B].
When a sheet of paper stays in the paper exit unit, the paper exit sensor [C] detects the
paper jam and xxxxx is displayed.
When outputs push up the tray full actuator [D], the paper overflow sensor [E] detects that
standard trays is full of outputs and x xxx is displayed after a job end.
To...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-893.png "Page 894
B230/B237/D042 6-74 SM
6.12.2 JUNCTION GATE MECHANISM
To the Standard Tray
The paper exit rollers [A] feed paper to the standard tray. These rollers are driven by the
fusing/paper exit motor [B].
When a sheet of paper stays in the paper exit unit, the paper exit sensor [C] detects the
paper jam and xxxxx is displayed.
When outputs push up the tray full actuator [D], the paper overflow sensor [E] detects that
standard trays is full of outputs and x xxx is displayed after a job end.
To...")
![Page 896
B230/B237/D042 6-76 SM
6.13.2 DUPLEX DRIVE
The duplex inverter motor [A] drives the following:
ƒ Duplex inverter roller [B]
The duplex/bypass motor [C] drives the following:
ƒ Duplex transport roller 1 [D]
ƒ Duplex transport roller 1 [E]
ƒ Duplex transport roller 1 [F]
The duplex entrance sensor [G] and duplex exit sensor [H] control the interleave movement
and detect paper jams.](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-895.png "Page 896
B230/B237/D042 6-76 SM
6.13.2 DUPLEX DRIVE
The duplex inverter motor [A] drives the following:
ƒ Duplex inverter roller [B]
The duplex/bypass motor [C] drives the following:
ƒ Duplex transport roller 1 [D]
ƒ Duplex transport roller 1 [E]
ƒ Duplex transport roller 1 [F]
The duplex entrance sensor [G] and duplex exit sensor [H] control the interleave movement
and detect paper jams.")
SM 6-71 B230/B237/D042 Detailed Descriptions temperatures indicated in the table at the bottom of the page. The operation panel indicators are turned off except for the Energy Saver LED and the Power LED. If the controller receives an image print out command from an application program (e.g. to print incoming fax data or to print data from a PC), the temperature of each fusing lamp rises to print the data. Return to stand-by mode The machine returns to stand-by mode if one of the following is done: ƒ The Clear Mode/Energy Saver Mode key is pressed ƒ Any key on the operation panel or touch panel screen is pressed ƒ An original is placed in the ADF ƒ The ADF is lifted ƒ A sheet of paper is plac ed in the by-pass feed table The return time from the panel off mode is less than 30 seconds. Mode Operation Switch Energy Saver LED Fusing Temperature +24V System +5V Panel off On On Heating roller: 100°C Pressure roller: 130°C On On Auto Off Mode There are two Auto Off modes: Off Stand-by mode and Off mode. The difference between Off Stand-by mode and Off mode is the machine’s condition when it enters the Auto Off mode. Entering off stand-by and off modes The machine enters the Off Stand-by mode or Off Mode when one of the following is done. ƒ The auto off timer runs out. ƒ The operation switch is pressed to turn the power off. If one or more of the following conditions exis ts, the machine enters Off Stand-by mode. If none of these conditions exist, t he machine enters the Off Mode. ƒ Error or SC condition ƒ Image data is stored in the memory ƒ During memory TX or polling RX ƒ The handset is off hook ƒ An original is in the ARDF
B230/B237/D042 6-72 SM ƒ The ARDF is open Off Stand-by mode The system +5V is still supplied to all components. When the machine detects a ringing signal or receives a stream of data for a print job, the +24V supply is activated. At this time the machine automatically prints the inco ming message or executes the print job. Off Mode The system +5V supply also turns off. However, +5VE (+5V for energy saver mode) is still activated. When the machine det ects a ringing signal, off-hook signal, or receives a print job, the machine returns to the Off Stand- by mode and the system +5V and +24V supplies are activated. Returning to stand-by mode The machine returns to stand-by mode when the operation switch is pressed. The return time is less than 45 seconds. Mode Operation Switch Energy Saver LED Fusing Lamp +24VSystem +5V Note Off Stand-by Off Off Off (On when printing) On On Off Off Off Off Off Off +5VE is supplied 6.11.6 NEW UNIT DETECTION Fusing Unit, Image Transfer Belt Unit The fusing unit and image transfer belt unit each have a fuse. When the machine detects that the fuse is intact, the ma chine determines that a new unit is installed. Then a short time later, the fuse blows. PCU, Development Unit The development unit (as part of the PCU, or as a separate development unit) contains an ID chip. The ID chip contains information t hat tells the machine that the unit is new.
SM 6-73 B230/B237/D042 Detailed Descriptions 6.12 PAPER EXIT 6.12.1 OVERVIEW 1. Junction gate 2. Paper exit roller 1 3. Paper overflow sensor 4. Paper exit sensor 5. Paper exit roller 2 6. To the inverter tray 7. To the standard tray After fusing, the junction gate feeds paper to t he standard paper tray or the inverter tray. The junction gate solenoid controls the junction gate as follows: ƒ To the standard paper tray: The junc tion gate solenoid is off (default) ƒ To the inverter tray: The junction gate solenoid is on. The fusing/paper exit motor drives the paper exit rollers.
B230/B237/D042 6-74 SM 6.12.2 JUNCTION GATE MECHANISM To the Standard Tray The paper exit rollers [A] feed paper to the standard tray. These rollers are driven by the fusing/paper exit motor [B]. When a sheet of paper stays in the paper exit unit, the paper exit sensor [C] detects the paper jam and xxxxx is displayed. When outputs push up the tray full actuator [D], the paper overflow sensor [E] detects that standard trays is full of outputs and x xxx is displayed after a job end. To the Inverter Tray When paper is fed to the inverter tray, the ju nction gate [A] closes the paper path to the standard tray. And then, the inverter roller [B] feeds paper to the inverter tray. This roller is driven by the duplex inverter motor [C].
SM 6-75 B230/B237/D042 Detailed Descriptions 6.13 DUPLEX UNIT 6.13.1 OVERVIEW 1. Duplex inverter roller 2. Junction gate 3. Duplex entrance sensor 4. Duplex transport roller 1 5. Duplex transport roller 2 6. Duplex exit sensor 7. Duplex transport roller 3 8. Standard tray 9. Inverter tray ƒ To print on the second side, the duplex inverter roller inverts the paper from the fusing unit and feeds it to the duplex unit. ƒ The duplex unit feeds the inverted pa per back to the paper feed section. ƒ When both sides have been printed, the duplex inverter unit feeds the paper out to the standard tray.
B230/B237/D042 6-76 SM 6.13.2 DUPLEX DRIVE The duplex inverter motor [A] drives the following: ƒ Duplex inverter roller [B] The duplex/bypass motor [C] drives the following: ƒ Duplex transport roller 1 [D] ƒ Duplex transport roller 1 [E] ƒ Duplex transport roller 1 [F] The duplex entrance sensor [G] and duplex exit sensor [H] control the interleave movement and detect paper jams.
SM 6-77 B230/B237/D042 Detailed Descriptions 6.13.3 INVERTER MECHANISM This machine uses the above switch back s ystem for duplex printing. The drawing above right shows the paper feed for duplex printing.
B230/B237/D042 6-78 SM 6.13.4 DUPLEX OPERATION Up to A4/LT (81/2 x 11) LEF There are three sheets of paper in the paper feed path at the same time. The interleave method is used. The drawing above shows the paper movement wi th the interleave method for three sheets of paper. The printing is done as follows:
SM 6-79 B230/B237/D042 Detailed Descriptions From A4/LT (81/2 x 11) LEF to 400mm length There are two sheets of paper in the paper f eed path at the same time. The interleave method is used. For sheets longer than 400 mm, there is no interleaving. The drawing above shows the paper movement with the interleave method for two sheets of paper. The printing is done as follows:
B230/B237/D042 6-80 SM 6.14 PRINTER FUNCTIONS 6.14.1 OVERVIEW The controller is based on the GW architecture. CPU : RM7035C-600 MHz ASIC : This is one of the GW-architecture ASICs. : GW architecture ASIC. It controls the interface with the CPU and controls t hese functions: memory, local bus interrupts, PCI bus, video data, HDD, SD card for booting and image processing. SHAKER : IO control ASIC. It controls the network, operation panel, USB port, SD cards. SDRAM DIMM (2 slots) : The controller has 1024-MB resident SDRAM. Flash ROM : 32 MB flash ROM programmed for the boot system. SD card (Boot) : The 32 MB SD card installed in the SD ca rd slot #1 includes the program for system, network application, printer, PCL5c, PS3 and RPCS applications and internal printer fonts.