An example of an apparatus is provided. The apparatus includes an input device to receive camera data. The camera data is associated with a printing device. The apparatus further includes an analysis engine to analyze the camera data with a convolutional neural network model to identify an issue. The apparatus also includes a resolution engine to determine a solution for the issue.

An electronic device includes circuitry. The circuitry controls a state transition between an operation ready state and a low power state, the low power state being a state whose standby power is lower than standby power of the operation ready state. The circuitry calculates a predicted time period required for the electronic device to transit to the low power state. The circuitry selects, from a plurality of device diagnoses, a particular device diagnosis whose execution is completed within the calculated predicted time period. The circuitry executes the selected particular device diagnosis.

An operation guidance assistance system includes a controller executing operation guidance of an image generation apparatus and a display displaying the operation guidance. The controller: obtains, when the image generation apparatus develops an error, information on a site of the error with an imaging apparatus; identifies a member-to-be-operated in accordance with the information on the site of the error in the image generation apparatus, the member-to-be-operated being a subject to the operation guidance for clearing the error; obtains, from the information on the site of the error, information on a hand of a user carrying out an operation of the image generation apparatus; displays, on the display, the information on the site of the error including the information on the hand of the user; and displays operation guidance assistance information to guide the user through the operation in accordance with a sequence of the operation guidance.

An image forming apparatus includes a printer, a first reader, a second reader, and a processor. The printer is configured to print an image having diagnostic information on a sheet of paper. The first reader is configured to read a first image from the sheet of paper. The second reader is configured to read a second image from the sheet of paper. The processor is configured to cause a display to display a diagnosis result of a defect based on the first image and the second image.

In a system in which a server and a client to which a device is connected communicate, the server can execute processes based on the result of checking device operation. The POS terminal of a network system has a device control function for controlling the device, and a diagnostic function for checking operation of the device. To check the operation of the device connected to the client, a maintenance server sends a control command instructing starting the diagnostic function to the POS terminal. The POS terminal stops the device control function if the device control function is executing, starts the diagnostic function, checks operation of the device with the diagnostic function, and returns the result of the checked operation to the maintenance server.

An image forming apparatus includes a printer engine, a sensor and a processor. The printer engine forms an image. The sensor outputs vibration information associated with a vibration of the printer engine. The processor determines whether at least one component of the printer engine has an abnormality based on the output vibration information.

An image inspection device detects an abnormality of a formed image by comparing imaged data obtained by imaging the formed image with original image data of the formed image. The image inspection device includes a hardware processor that: adjusts the original image data to reduce sharpness of the original image data; and detects the abnormality by comparing the adjusted original image data with the obtained imaged data. The hardware processor partly restricts the reduction of the sharpness.

An example diagnostic apparatus includes a user interface device, a communication interface, a processor, and a memory storing instructions executable by the processor. The processor executes the instructions to receive, through the communication interface, a response packet in response to a network performance measurement packet transmitted to an image forming apparatus, determine a network performance between the image forming apparatus and a diagnostic apparatus based on network performance information measured based on the received response packet and reference network performance information corresponding to the image forming apparatus, and provide the determined network performance through the user interface device.

A terminal device includes an acquisition unit that acquires image information, a display unit that displays the image information acquired by the acquisition unit, a detection unit that detects pitch information by performing frequency analysis on the image information displayed by the display unit, and a control unit that controls the display unit to display the pitch information detected by the detection unit. The control unit adjusts saturation or shade of the image information displayed by the display unit.

A terminal device includes an acquisition unit that acquires image information of a read-out original, a display unit that displays the image information acquired by the acquisition unit, a detection unit that detects pitch information by performing frequency analysis of the image information displayed by the display unit, and a control unit that controls the image information so as to be enlarged or reduced in accordance with a size of the original and controls to display the pitch information so as to be superimposed on the image information which is enlarged or reduced.