Ccd Pcb - Kyocera Mita KM-1810 Service Manual

2-3-4 CCD PCB

CCD
IC2
The CCD PCB (CCDPCB) is equipped with a CCD sensor IC2 for original scanning.
The CCD sensor IC2 is controlled by the clock signals 1, 2, RESET, CLP and SHIFT for CCD drive from the main PCB
(MPCB) via logic IC1.
Image signals are analog signals. Even- and odd-numbered pixels are output separately. These analog image signals are
amplified by emitter followers in the transistors TR1 and TR2 and then transmitted to the analog signal processing circuit in
the main PCB (MPCB).
Terminals (CN)
1-1 1-2 0/5 V DC (pulse)
1-3 1-4 0/5 V DC (pulse)
1-5 1-6 0/5 V DC
1-7 1-8 0/5 V DC
1-9 1-10 0/5 V DC
2-1 2-2 –
2-3 2-4 –
2-5 2-6 12 V DC
CCD PCB
1
2
Logic IC1
RESET
CLP
SHIFT
ODD
Transistor TR2
EVEN
Transistor TR1
Figure 2-3-7 CCD PCB block diagram
Voltage
CCDPCB clock pulse, input
CCDPCB clock pulse, input
CCDPCB RESET signal, input
CCDPCB CLP signal, input
CCDPCB SHIFT signal, input
CCDPCB image signal (ODD), output
CCDPCB image signal (EVEN), output
12 V DC supply from MPCB, input
Main PCB
1
2
Clock signal generator
RESET
ASIC
CLP
SHIFT
ODD
Analog signal
processing circuit
EVEN
Remarks
2A1/2
2-3-11