Control method of liquid discharge apparatus and liquid discharge apparatus

A control method of a liquid discharge apparatus, the liquid discharge apparatus including a liquid discharge head including a plurality of nozzles and configured to perform printing on a medium by discharging a liquid from the plurality of nozzles, an attachment unit to which a plurality of liquid reservoir units reserving the liquid to be supplied to the plurality of nozzles is attachable, and an operation unit including a display unit, the attachment unit including a first attachment portion to which a first liquid reservoir unit reserving a first liquid having a sedimentation property is to be attached and a second attachment portion to which a second liquid reservoir unit reserving a second liquid having a sedimentation property inferior to that of the first liquid is to be attached, the control method comprising:

• in a case in which execution of a replacement mode is instructed via operation of the operation unit,
• displaying, on the display unit, display information for prompting removal of the first liquid reservoir unit from the first attachment portion;
• displaying, on the display unit, display information for prompting attachment of a different second liquid reservoir unit from the second liquid reservoir unit attached to the second attachment portion, to the first attachment portion;
• and
• when the different second liquid reservoir unit is attached to the first attachment portion, supplying the second liquid to the plurality of nozzles configured to discharge the first liquid.