Abstract: A vehicle power supply system includes a power source control device that executes a process of switching a connection state of a driving circuit to the main power source and an auxiliary power source including; a process of switching the connection state so as to transition to a backup state as a voltage decrease of the main power source occurs, and a process of switching the connection state so as to transition to a normal state as the voltage decrease of the main power source is resolved. After a voltage decrease of the main power source occurs, a turning-side control device of a steering control unit sets an output-limited state for a turning-side motor. The output-limited state is canceled upon the power source control device completing switching of the connection state so as to transition.

Abstract: An image forming apparatus includes a replaceable image formation unit. The image forming apparatus includes an input device for inputting a signal representing occurrence of abnormality in one of an output image and the image forming apparatus recognized by an operator, a unit specifying device for specifying an image formation unit to be replaced for resolving the abnormality upon receiving the signal, and a notification device for notifying information related to the replacement unit based on the unit specification result.

Abstract: An image forming apparatus includes a replaceable image formation unit. The image forming apparatus includes an input device for inputting a signal representing occurrence of abnormality in one of an output image and the image forming apparatus recognized by an operator, a unit specifying device for specifying an image formation unit to be replaced for resolving the abnormality upon receiving the signal, and a notification device for notifying information related to the replacement unit based on the unit specification result.

Abstract: In a data link control method, a receiver and a transmitter are connected so that the transmitter can transmit every line of a predetermined data at a first speed, the receiver plotting every line of the predetermined data on a recording paper thereof at a second speed. A predetermined mode is selected from either a buffer mode or a skip mode on the basis of a ratio of the first speed to the second speed and whether a buffer can be used by the receiver. The predetermined data is temporarily stored in the buffer and then plotted during the buffer mode. The recording paper of the receiver is fed at a third speed higher than a normal speed when a blank line of the predetermined data is plotted thereon during the buffer mode and skip mode.

Abstract: A data communication apparatus is connected to two telephone lines and includes a single telephone circuit, a modem and a switching circuit for selectively coupling one of the telephone circuit and the modem to a selected one of the telephone lines. A telephone call is made through the telephone circuit, and a data communication such as a facsimile communication is made through the modem.