Canon iR1600 Series Service Manual page 673

CHAPTER 2 BASIC OPERATION
1 Outline of Electrical Circuitry
1.1 Block Diagram of the G3 Fax Function
Image processor PCB
Communication
Memory
control block
function
Image storage DIMM slot (option)
J41 J81 J42
230V only
J1 J2 J6
NCU PCB
Line voltage
2-line/4-line switching
conversion circuit
circuit
Modular PCB
Off-hook detection circuit
*1
Dial pulse generating circuit Telephone line interface
*1 : J3 : 120V
J7 : 230V
F02-101-01
2 - 1
COPYRIGHT © 2002 CANON INC. CANON FAX BOARD REV.0 MAR. 2002