Ricoh PRIPORT VT 2000 Series Service Manual page 25

INDEX NAME
No.
57 Paper End Sensor
59 Paper Table Lower Limit
Sensor
69 Printing Pressure Sensor
Printed Circuit Board
7 Power Supply PCB
8 Thermal Head Drive
Control PCB
27 Ink Detection PCB
40 AC Drive PCB
43 CCD PCB
44 A/D Conversion PCB
48 Operation Panel
53 Main Control PCB
55 Image Processing PCB
Printed Circuit Board
15 Paper Size Detection
Board
Counters
61 Copy Counter
62 Master Counter
Others
5 Fluorescent Lamp
Stabilizer
9 Thermal Head
25 Fluorescent Lamp
32 Encoder
64 Circuit Breaker
FUNCTION
Informs the CPU when the paper table
runs out of paper.
Detects when the paper table reaches
the lowest position.
Informs the CPU when the printing
pressure is applied.
Rectifies 100V AC input and supplies
DC voltage.
Supplies the power to the Thermal
Head according to the signal from the
scanner section.
Control the ink supply.
Controls the AC component by relays.
Converts the light intensity into the
electrical signal.
Converts the analogue signal into the
digital signal.
Controls the LED performance and
monitors the key operation.
Controls all machine functions both
directly and through other boards.
Controls the master processing
performance.
Detects the size of the paper set on the
table.
Keeps track of the total number of
copies made.
Keeps track of the total number of
masters made.
Stabilizes the power supplement to the
Fluorescent Lamp.
Plots the master with heat.
Applies light to the original for exposure.
Converts 16 image positions to 4 bit
data.
Cuts the ac line off.
1-23
28 February '91
P to P
LOCATION
F-5
(VT2300/2500)
B-6
(VT2100/2130
/2150)
A-6
A-6
D-1
E-2
F-7
E-5
A-2
B-3
A-8
C-6
C-3
E-5
(VT2300/2500
only)
A-7
A-7
B-3
F-2
A-3
F-7
B-1