Ccd Pcb - Kyocera KM-3035 Service Manual

2-3-5 CCD PCB

CCD
IC2
The CCD PCB (CCDPCB) is equipped with a CCD sensor IC2 for original scanning.
The clock signals (CLK, RS, CLP, and SHIFT) for driving the CCD sensor (IC2) are sent as differential signals from the main
PCB (MPCB), reconstructed to normal signals by the differential receiver (IC3), and then input to the CCD sensor (IC2) via
the clock driver (IC1 and IC4).
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 Q1 and Q2 and then transmitted to the analog signal processing circuit in the
main PCB (MPCB).
CCD PCB
1
2
Clock driver
RS
IC1, 4
CLP
SHIFT
Odd
Transistor Q2
Even
Transistor Q1
Figure 2-3-10 CCD PCB block diagram
CLK
RS
Differential
receiver
CLP
IC3
SHIFT
2FD/2FF/2FG
Main PCB
Odd
Even
2-3-25