Ricoh Mp C3000 Service Manual
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![Page 876
B230/B237/D042 6-56 SM
6.10.3 PAPER LIFT – TRAYS 1 & 2
When the tray is installed in the machine, the tray bar [A] pushes the lever [B], and this
lever pushes down the pick-up roller [C] onto the paper.
Also, the rear end of the paper tray pushes the tray set switch; see section (for tray 2, this
is the paper size switch). As a result, the machine detects that the paper tray is installed.
When the machine detects that a tray has been placed in the machine, the tray lift motor
[D]...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-875.png "Page 876
B230/B237/D042 6-56 SM
6.10.3 PAPER LIFT – TRAYS 1 & 2
When the tray is installed in the machine, the tray bar [A] pushes the lever [B], and this
lever pushes down the pick-up roller [C] onto the paper.
Also, the rear end of the paper tray pushes the tray set switch; see section (for tray 2, this
is the paper size switch). As a result, the machine detects that the paper tray is installed.
When the machine detects that a tray has been placed in the machine, the tray lift motor
[D]...")
![Page 877
SM 6-57 B230/B237/D042
Detailed
Descriptions
6.10.4 PAPER SIZE DETECTION – TRAYS 1 & 2
There is no size switch for tray 1. The paper si ze is fixed at either A4 or LT (LEF for both
sizes). You can change the size setting with SP5-181-1.
For tray 2, there are four paper size switches [A] working in combination. Switch 1 (right
end) is for tray set detection. The other three switches detect the paper size as shown in
the table below. The actuator [B] is moved by the end plate [C].
0: Not...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-876.png "Page 877
SM 6-57 B230/B237/D042
Detailed
Descriptions
6.10.4 PAPER SIZE DETECTION – TRAYS 1 & 2
There is no size switch for tray 1. The paper si ze is fixed at either A4 or LT (LEF for both
sizes). You can change the size setting with SP5-181-1.
For tray 2, there are four paper size switches [A] working in combination. Switch 1 (right
end) is for tray set detection. The other three switches detect the paper size as shown in
the table below. The actuator [B] is moved by the end plate [C].
0: Not...")
![Page 879
SM 6-59 B230/B237/D042
Detailed
Descriptions
100%
(Status bar x 4) OFF OFF
70%
(Status bar x 3) ON OFF
30%
(Status bar x 2) ON ON
10%
(Status bar x 1) OFF ON
OFF: No actuator
6.10.6 PAPER END DETE
CTION – TRAYS 1 & 2
The paper stack raises the paper end feeler [A] and the paper end sensor [B] deactivates if
there is some paper in the paper tray.
When the paper tray runs out of paper, the paper end feeler [A] drops into the cutout in the
tray bottom plate. At this time the paper...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-878.png "Page 879
SM 6-59 B230/B237/D042
Detailed
Descriptions
100%
(Status bar x 4) OFF OFF
70%
(Status bar x 3) ON OFF
30%
(Status bar x 2) ON ON
10%
(Status bar x 1) OFF ON
OFF: No actuator
6.10.6 PAPER END DETE
CTION – TRAYS 1 & 2
The paper stack raises the paper end feeler [A] and the paper end sensor [B] deactivates if
there is some paper in the paper tray.
When the paper tray runs out of paper, the paper end feeler [A] drops into the cutout in the
tray bottom plate. At this time the paper...")
![Page 880
B230/B237/D042 6-60 SM
6.10.7 REGISTRATION
The registration motor [A] drives the registration roller [B] with a complex train of gears.
The machine makes a paper buckle at the registration roller to correct paper skew. You can
adjust the paper buckle with SP1-003.
6.10.8 PAPER FEED LINE SPEED
This machine has two process line speeds (for feed from registration roller to fusing unit).
The line speeds depend on the selected mode.
Mode Line speed (mm/s) Print speed (ppm)
Plain/
Middle...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-879.png "Page 880
B230/B237/D042 6-60 SM
6.10.7 REGISTRATION
The registration motor [A] drives the registration roller [B] with a complex train of gears.
The machine makes a paper buckle at the registration roller to correct paper skew. You can
adjust the paper buckle with SP1-003.
6.10.8 PAPER FEED LINE SPEED
This machine has two process line speeds (for feed from registration roller to fusing unit).
The line speeds depend on the selected mode.
Mode Line speed (mm/s) Print speed (ppm)
Plain/
Middle...")
![Page 881
SM 6-61 B230/B237/D042
Detailed
Descriptions
6.10.9 TRAY LOCK MECHANISM
This machine has two types of tray lock mechanism.
Tray Lock at the Front
The lock at the front prevents the tray from coming out of the machine during transporting
or shipping. When you pull the handle [A], the lock lever [B] is lowered. As a result, you can
pull out the tray.
Tray Lock at the Rear
This mechanism is only activa ted when the machine detects a paper jam. The lock at the
rear prevents the tray from...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-880.png "Page 881
SM 6-61 B230/B237/D042
Detailed
Descriptions
6.10.9 TRAY LOCK MECHANISM
This machine has two types of tray lock mechanism.
Tray Lock at the Front
The lock at the front prevents the tray from coming out of the machine during transporting
or shipping. When you pull the handle [A], the lock lever [B] is lowered. As a result, you can
pull out the tray.
Tray Lock at the Rear
This mechanism is only activa ted when the machine detects a paper jam. The lock at the
rear prevents the tray from...")
![Page 882
B230/B237/D042 6-62 SM
The lock lever [B] locks tray 1 [C] and tray 2 [D].
6.10.10 PAPER DUST COLLECTION
The two mylars [A] scrape the paper dust from the registration idle roller [B]. The paper
dust falls down into the paper dust container [C].
6.10.11 BY-PASS PAPER SEPARATION
When the paper set sensor detects paper and the machine gets a by-pass printing job, the
by-pass solenoid [A] unlocks the feed shaft stopper at the front end of the by-pass feed
shaft [B].
The by-pass feed...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-881.png "Page 882
B230/B237/D042 6-62 SM
The lock lever [B] locks tray 1 [C] and tray 2 [D].
6.10.10 PAPER DUST COLLECTION
The two mylars [A] scrape the paper dust from the registration idle roller [B]. The paper
dust falls down into the paper dust container [C].
6.10.11 BY-PASS PAPER SEPARATION
When the paper set sensor detects paper and the machine gets a by-pass printing job, the
by-pass solenoid [A] unlocks the feed shaft stopper at the front end of the by-pass feed
shaft [B].
The by-pass feed...")
![Page 883
SM 6-63 B230/B237/D042
Detailed
Descriptions
The by-pass tray has the separation pad sy stem. The by-pass feed roller and separation
pad [F] feed the top sheet of paper stack.
6.10.12 BY-PASS PAPER SIZE DETECTION
There are two paper side plates [A] on the by-p ass tray. These connect with the paper size
sensor [B] through a rack-and-pinion mechanism.](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-882.png "Page 883
SM 6-63 B230/B237/D042
Detailed
Descriptions
The by-pass tray has the separation pad sy stem. The by-pass feed roller and separation
pad [F] feed the top sheet of paper stack.
6.10.12 BY-PASS PAPER SIZE DETECTION
There are two paper side plates [A] on the by-p ass tray. These connect with the paper size
sensor [B] through a rack-and-pinion mechanism.")
![Page 885
SM 6-65 B230/B237/D042
Detailed
Descriptions
ƒ Temperature is normally controlled by turning the fusing lamps on and off.
ƒ The lubricant roller supplies a small amount of oil to the pressure roller through the
cleaning roller. An oil supply unit is not nec essary because the amount of oil supplied
to the pressure roller is small.
6.11.2 FUSING UNIT DRIVE
Belt and Rollers
The fusing/paper exit motor drives the pressu re roller [A] and the fusing roller [B] through
the gear train,...](http://img.usermanuals.tech/thumb/64/98663/w64_mp-c3000-service-manual-1509271621_d-884.png "Page 885
SM 6-65 B230/B237/D042
Detailed
Descriptions
ƒ Temperature is normally controlled by turning the fusing lamps on and off.
ƒ The lubricant roller supplies a small amount of oil to the pressure roller through the
cleaning roller. An oil supply unit is not nec essary because the amount of oil supplied
to the pressure roller is small.
6.11.2 FUSING UNIT DRIVE
Belt and Rollers
The fusing/paper exit motor drives the pressu re roller [A] and the fusing roller [B] through
the gear train,...")
![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")
SM 6-61 B230/B237/D042 Detailed Descriptions 6.10.9 TRAY LOCK MECHANISM This machine has two types of tray lock mechanism. Tray Lock at the Front The lock at the front prevents the tray from coming out of the machine during transporting or shipping. When you pull the handle [A], the lock lever [B] is lowered. As a result, you can pull out the tray. Tray Lock at the Rear This mechanism is only activa ted when the machine detects a paper jam. The lock at the rear prevents the tray from coming out from the machine when the paper is jammed. If the tray is removed while the paper is jammed, the paper may be split in two pieces. This makes it difficult to remove the jammed paper. If the paper is jammed, the tray lock solenoi d [A] turns on and activates the lock lever [B].
B230/B237/D042 6-62 SM The lock lever [B] locks tray 1 [C] and tray 2 [D]. 6.10.10 PAPER DUST COLLECTION The two mylars [A] scrape the paper dust from the registration idle roller [B]. The paper dust falls down into the paper dust container [C]. 6.10.11 BY-PASS PAPER SEPARATION When the paper set sensor detects paper and the machine gets a by-pass printing job, the by-pass solenoid [A] unlocks the feed shaft stopper at the front end of the by-pass feed shaft [B]. The by-pass feed shaft has the by-pass feed roller [C] and two cams [D]. These cams move the paper lift plate [E] up and down. Th is pushes the paper against the feed roller. To feed the paper, the by pass feed roller make s one turn. After this, the rollers inside the machine can feed the paper, and t he solenoid locks the shaft again.
SM 6-63 B230/B237/D042 Detailed Descriptions The by-pass tray has the separation pad sy stem. The by-pass feed roller and separation pad [F] feed the top sheet of paper stack. 6.10.12 BY-PASS PAPER SIZE DETECTION There are two paper side plates [A] on the by-p ass tray. These connect with the paper size sensor [B] through a rack-and-pinion mechanism.
B230/B237/D042 6-64 SM 6.11 FUSING 6.11.1 OVERVIEW 1. Thermopile 2. Tension roller 3. Fusing roller 4. Pressure roller 5. Lubricant roller 6. Cleaning roller 7. Pressure roller fusing lamp 8. Pressure roller thermostat 9. Pressure roller thermistor 10. Fusing belt 11. Heating roller 12. Heating roller fusing lamps 13. Heating roller thermostats 14. Heating roller thermistor ƒ A belt fusing system is used. This has a fa ster warm-up time than a conventional fusing and pressure roller system. ƒ The heating roller is made of aluminum to increase the temperature of the fusing belt quickly. ƒ The fusing roller is made of sponge, which flattens slightly, also increasing the fusing nip. This roller does not contain a fusing lamp. ƒ The heating roller has two fusing lamps (one lamp heats the center and the other lamp heats the ends), and the pressure roller has one fusing lamp. ƒ The heating roller thermistor, pressure ro ller thermistor and thermopile control the temperature of these lamps. The thermopile is a non-contact sensor. The thermopile detects the temperature at t he center of the fusing unit, and the thermistor detects the temperature at the end.
SM 6-65 B230/B237/D042 Detailed Descriptions ƒ Temperature is normally controlled by turning the fusing lamps on and off. ƒ The lubricant roller supplies a small amount of oil to the pressure roller through the cleaning roller. An oil supply unit is not nec essary because the amount of oil supplied to the pressure roller is small. 6.11.2 FUSING UNIT DRIVE Belt and Rollers The fusing/paper exit motor drives the pressu re roller [A] and the fusing roller [B] through the gear train, timing belt and cl utch. The heating roller [C] is driven by the pressure with the fusing belt [D]. The cleaning roller [E] and lubricant roller [F] are driven by the friction with the pressure roller. Fusing Clutch The fusing clutch [G] turns off and cuts t he drive power when the fusing unit does not operate. This mechanism prevent s wear on the belt and rollers. ƒ The fusing clutch turns off when images and patterns are created on the transfer belt during process control and line position adjustment. Lubricant Mechanism The lubricant roller [F] contains silicone oil in its material. The lubricant roller applies small amount of silicone oil to the pressure roller to reduce the friction between the pressure roller and thermistor. The cleaning roller [E] cleans the lubricant rolle r to remove the residual toner stuck to the lubricant roller.
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
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 Temperature of Heating Roller (° C) Temperature of Pressure Roller ( °C) Machine ready 170 (SP1105-001) 50 (SP1105-007) Paper feed ready Machine ready - 10 (SP1105-085) -- Print ready Machine ready - 10 (SP1105-002) - Standby mode 165 (SP1105-010, -011) 150 (SP1105-012) Energy saver (panel off) mode 140 (SP1105-013, -014) 150 (SP1105-015) Low power mode 40 (SP1105-016, -017) 100 (SP1105-018) Off mode Lamps off (SP1105-019, -020) Lamps off (SP1105-021) Plain paper 160 (SP1105-030 to -036) -- Thin paper 155 (SP1105-038 to -044) -- Middle thick paper 170 (SP1105-109 to -112) -- Thick 1 paper (one-sided) 165 (SP1105-046, -050) -- Thick 1 paper (duplex, side 2) 170 (SP1105-048, -052) --
B230/B237/D042 6-68 SM Mode Temperature of Heating Roller (° C) Temperature of Pressure Roller ( °C) Thick 2 paper 175 (SP1105-054, -055) -- Thick 3 paper (full color) 180 (SP1105-089) -- Thick 3 paper (black-and-white) 170 (SP1105-090) -- OHP (full color) 175 (SP1105-056) -- OHP (black-and-white) 165 (SP1105-057) -- Special paper 165 (SP1105-058 to -080) -- - Paper Weights - ƒ Thin paper: Below 60 g/m 2 (16 lb) ƒ Normal plain paper: 60 – 81 g/m 2 (16 – 22 lb.) ƒ Middle Thick: 82 – 105 g/m 2 (22 – 28 lb.) ƒ Thick 1: 106 – 169 g/m 2 (28.5 – 44.9 lb.) ƒ Thick 2: 170 – 219 g/m 2 (45 – 58 lb.) ƒ Thick 3: 220 – 253 g/m 2 (58.5 – 67 lb.) Temperature Corrections - Corrections for ambient temperature (SP 1112) - ƒ If the room temperature is below 17°C, t he heating roller temperature is increased by 5°C. ƒ If the room temperature is above 30°C, t he heating roller temperature is decreased by 5°C. - First print of a job (SP 1114) - ƒ The heating roller temperature is increased by 10°C for the first 2 seconds of the job. - Corrections during the job (SP 1116) - ƒ The fusing temperature can be reduced two times during the job. There are adjustments for the temperature at the center and at the ends. There are also adjustments for paper wider than 226 mm, and less than 226 mm. ƒ With the default settings, fusing temperature at the center for paper widths less then
SM 6-69 B230/B237/D042 Detailed Descriptions 226 mm is reduced by 5°C after 30 seconds, and again reduced by 5°C after 60 seconds. Overheat Protection The CPU cuts power to the fusing lamp at the following times: ƒ The heating roller or pressure roller temperature becomes higher than 230 °C for one second or more SC 543 and SC 553 for the heating roller or SC 563 for the pressure roller show for this condition. ƒ The heating roller or pressure roller temperature reaches 250 °C. SC 544 and SC 554 for the heating roller or SC 564 for the pressure roller show for this condition. The following components are used if thermistor or thermopile overheat protection fails. ƒ Two thermostats for the heating roller and tw o thermofuses for the pressure roller in series with the common ground line of the fusing lamp. ƒ If one of the thermostat temper atures becomes higher than 234°C, it opens and cuts power to the fusing lamp. If the other thermostat tem perature becomes higher than 235 °C, it also opens and cuts power to the fusing lamp. ƒ If either of the two thermofuse temperatures becomes higher than 154 °C, the thermofuse opens and cuts power to the fusing lamp. ƒ These thermofuses make a series circuit. In either case, the machine stops operation.
B230/B237/D042 6-70 SM 6.11.5 ENERGY SAVER MODES Overview When the machine is not being used, the energy saver function reduces power consumption by dec reasing the fusing temperature. This machine has the following tw o types of energy saver modes: 1. Panel-off mode 2. Auto Off mode These modes are controlled by the following UP and SP modes: ƒ Panel off timer: User Tools – System Settings – Timer Setting – Panel Off Timer ƒ Auto off timer: User Tools – System Settings – Timer Setting – Auto Off Timer Panel Off Mode Entering the panel off mode The machine enters the panel off m ode when one of the following is done: ƒ The panel off timer runs out. ƒ The Clear Mode/Energy Saver Key is held down for one second. If the value in the panel off timer is larger t han that in the auto off timer, the machine goes into the auto off mode. At this time it does not go into the panel off mode. To make the panel off mode effective, specify a value smaller than the values in the auto off timer. What happens in panel off mode When the machine is in the panel off mode, each of the fusing lamps are kept at the