In Case Of “Date & Time” Is No Print Out - JRC JFE-582 Service Manual

In case of "Date & Time" is no print out.
The order of priority of the NMEA sentence of this Echo Sounder is the following.
1st. GGA
GGA-Global positioning system ( GPS ）fix data
Time,position and fix-releted data for a GPS receiver.
$---GGA,hhmmss.ss,llll.ll,a,x,xx,x.x,M,x.x,M,x.x,xxxx*hh<CR><LF>
UTC of position fix. Only time sentence
2nd. RMC
RMC-Recommended minimum specific GNSS data.
$---RMC,hhmmss.ss,A,llll.ll,a,yyyy.yy,a,x.x,x.x,xxxxxx,x.x,a,a*hh<CR><LF>
UTC of position fix
3rd. GLL
GLL-Geographic position – latitude/longitude
Latitude and longitude of vessel position, time of position fix and status.
$---GLL,llll.ll,a,yyyy.yy,a,hhmmss.ss,A,a*hh<CR><LF>
*
GGA sentence is received first when a GGA sentence is outputted from connected GPS.
Therefore, a date isn't printed out because there is no DATE sentence.
UTC of position fix. Only time sentence
71
Date:dd/mm/yyyy