Ricoh Mp C3000 Service Manual

							 
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.