Canon iR2200 Series, Service Handbook

Page: 123 / 352

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
4-77
6.6.1 Others
Electrical signal (target) Reference to general I/O address Remarks
Name circuit diagram I/O indication
SP1 (FAX-CON) A3-1-E
Speaker
6.6.2 PCBs
Ref. Description Remarks
Name
[1] Controls the fax system.
G3 FAX control PCB
[2] Serves as an interface between 100V and 120V models use
NCU PCB telephone line and fax system. different interfaces.
[3] Connects a modular cable. 100V and 120V models use
G3 modular PCB different interfaces.
[4] Stores firmware for the fax 16M bit
DIMM system.
[5] Generates a pseudo CI signal. 100V
Pseudo CI PCB
[6] Detects off-hook state of the 120V
Off-hook detection PCB telephone