Ricoh C211 Service Manual page 32

NDEX NAME FUNCTION Pto P
No. LOCATION
57 Paper End Sensor Informs the
CPU
when the paper table F-5
runs out of paper. (VT2300/2500)
B-6
(VT21 00/2130
/21 50)
59 Paper Table Lower Limit
Detects when the paper table reaches A-6
Sensor the lowest position.
60 Printing Pressure
Sensor
Informs the
CPU
when the printing A-6
pressure is applied.
Printed Circuit Board
7
Power Supply
PCB
Rectifies 100V AC input and supplies
D-1
DC voltage,
8 Thermal Head Drive
Supplies the power to the Thermal E-2
Control PCB
Head according to the signal from the
scanner section,
27 Ink Detection PCB
Control the ink supply.
F-7
40 AC Drive PCB Controls the AC component by relays,
E-5
43 CCD PCB Converts the light intensity into the
A-2
electrical signal.
44 A/D Conversion PCB
Converts
the
analog signal into the
B-3
digital signal,
48 Operation Panel
Controls the LED performance and A-8
monitors the key operation.
53 Main Control PCB
Controls all machine functions both C-6
directly and through other boards.
55 Image Processing PCB
Controls the master processing c-3
performance.
Printed Circuit Board
15 Paper Size Detection
Detects the size of the paper set on the E-5
Board table.
(VT2300/2500
only)
counters
61
Copy Counter
Keeps track of the total number of A-7
copies made.
62 Master Counter
Keeps track of the total number of
A-7
masters made.
Xhers
5
Fluorescent Lamp Stabilizes the power supplement to the
B-3
Stabilizer Fluorescent Lamp.
9 Thermal Head Plots the master with heat. F-2
25 Fluorescent Lamp Applies light to the original for exposure, A-3
32 Encoder
Converts 16 image positions to 4 bit F-7
data,
64 Circuit Breaker Cuts the ac line off.
B-1