Ricoh SP 200 Specifications Page 11

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5. ELECTRICAL COMPONENT DESCRIPTIONS
Refer to the electrical component layout and the point-to-point diagram on the
waterproof paper in the pocket for the locations of these components.
Symbol
Index
No.
Description Note
Printed Circuit Boards
PCB1 54
High Voltage Supply
Board
Supplies high voltage to the drum charge
roller, development roller, transfer roller, and
discharge brush.
PCB2 50 Lamp Stabilizer Provides dc power for the exposure lamp.
PCB3 58
PSU Provides dc power to the system and ac
power to the fusing lamp.
PCB4 61 LD Unit Controls the laser diode.
PCB5 62
Operation Panel Controls the touch panel display and LED
matrix, and monitors the key matrix.
PCB6 51
SBU Contains the CCD, and outputs a video
signal to the BICU board.
PCB7 55 IOCSS Controls the mechanical parts of the printer.
PCB8 52
BICU Controls all copier functions both directly or
through other control boards.
PCB9 53
MSU Compressed the image data, stores the
data, and applies the image editing.
Motors
M1 45 Main Drives the main body components.
M2 36
Scanner Drive Drives the 1st and 2nd scanners (dc stepper
motor).
M3 47
Transport Vacuum
Fan
Aids paper transportation from the transfer
roller to the fusing unit.
M4 49 Polygonal Mirror Turns the polygonal mirror.
M5 37
Toner Supply Rotates the toner bottle to supply toner to
the toner supply unit.
M6 35 Exhaust Fan Removes heat from around the fusing unit.
Sensors
S1 33 Upper Exit Detects misfeeds.
S2 31 Lower Exit Detects misfeeds.
S3 28 Left Vertical Door Cuts the +5 and +24 Vdc power lines.
S4 27
Left Door Detects whether the left door is open or
closed.
S5 17
Relay Detects the leading edge of paper from the
paper tray and duplex unit to determine the
stop timing of the paper feed clutch and
duplex feed motor. Also detects misfeeds.
S6 10 PCU Detects when a new PCU is installed.
S7 29 Fusing Exit Detects misfeeds.
ELECTRICAL COMPONENT DESCRIPTIONS 1 August 1996
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