Referring to FIG 27, reference symbols SR1 to SR6 denote status request commands corresponding to statuses 1 to 6 in FIG 28; PSON, {HEAD ~ a power save command} for reducing {TAIL ~ power consumption} of the fixer 331; and PSOF, a release command for releasing the power save mode 
Referring to FIG 27 , reference symbols SR1 to SR6 denote status request commands corresponding to statuses 1 to 6 in FIG 28 ; PSON , { HEAD ~ a power save command } for reducing { TAIL ~ power consumption } of the fixer 331 ; and PSOF , a release command for releasing the power save mode
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH