Ricoh B230 Service Manual

 
SM 6-73 B230/B237 
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 the standard paper tray or the inverter tray. 
The junction gate solenoid controls the junction gate as follows: 
ƒ  To the standard paper tray: The junction gate solenoid is off (default) 
ƒ  To the inverter...

 
B230/B237 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 xxxx is displayed after a job end. 
To the...

 
SM 6-75 B230/B237 
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 paper back to the paper feed...

 
B230/B237 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 
Detailed 
Descriptions 
6.13.3 INVERTER MECHANISM 
 
This machine uses the above switch back system for duplex printing. The drawing above 
right shows the paper feed for duplex printing.  

 
B230/B237 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 with the interleave method for three sheets 
of paper. The printing is done as follows: 
  

 
SM 6-79 B230/B237 
Detailed 
Descriptions 
From A4/LT (81/2 x 11) LEF to 400mm length 
 
There are two sheets of paper in the paper feed 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 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 these 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...

 
SM 6-81 B230/B237 
Detailed 
Descriptions 
NVRAM: 
128 KB for the machine parameters, logged data and a record of the number of pages 
printed for each “User Code”. 
Network Interface:  
100BASE-TX/10BASE-T 
USB Interface:  
USB2.0 
IEEE 1394 Interface (option):  
Supports a data transfer speed of up to 400 Mbps. 
IEEE 1284 Interface (option):  
This is a parallel printer port.   
IEEE 802.11b (option):  
This lets you connect the machine to a wireless network. 
Bluetooth (option):  
This lets you...

 
B230/B237 6-82  SM 
6.14.2 HARD DISK 
Overview 
The capacity of the hard disk is 40 GB. The controller partitions it into several drives and 
allocates them for different functions. You can initialize these partitions as necessary (
 
SP5-832). The table lists the contents of the hard disk. 
Contents Capacity (MB) Volatile/ 
Nonvolatile Initialization 
(SP5-832) 
18,340 Nonvolatile 
Images (IMH) 
12,844 Volatile 002 
Thumbnails 2400 Nonvolatile 003 
Job Logs  200 Nonvolatile 004 
Printer fonts  500...