Canon PC-D320 Service Manual

Also see for FAX-L400: Specifications Facsimile guide Quick reference guide Specifications

Contents

PC-D320/PC-D340/FAX-L400 Chapter 4: Maintenance and Service4-425. SERVICE SWITCHES5.1 Hardware SwitchesThis machine has the following hardware switches. Be sure not to use those switches notdiscussed herein; they are for use at the factory.a) SCNT boardJumper switch (JP1)The lithium battery backs up control memory by causing a short with the jumper plug.b) ECNT boardPush switch (SW201)This is a test print switch.5.2 Service Data SettingService data can be checked and changed with items on display menus. The effective SSSWs/parameters and their default values in this machine are shown in5.4 Service Data Flowchartin this chapter. Detailed description of each SSSW/parameter is not given in this manual exceptthe new SSSWs/parameters added to this model. SeeG3 Facsimile SERVICE DATAHANDBOOK (Rev. 0) (supplied separately) for details of them. The new switches for thismodel are described in5.6 New SSSWs/Parameters Added to this Model.#1 SSSW (Service Soft Switch Settings)These setting items are for basic fax service functions such as error management, echocountermeasures, and communication trouble countermeasures.#2 MENU (MENU switch settings)These setting items are for functions required during installation, such as NL equalizer andtransmission levels.#3 NUMERIC Param. (NUMERIC parameter settings)These setting items are for inputting numeric parameters such as the various conditions forthe RTN signal transmission.#4A SPECIAL (Special settings)These setting items are for telephone network control functions.#4B NCU (NCU settings)These setting items are for telephone network control functions such as the selection signaltransmission conditions and the detection conditions, for the control signals sent from theexchange.