Hitachi 902 Service Manual page 82

(f) Key operation data
The key operation data is printed out in the order of key operation code (3-digit
integer), key operation count (3-digit integer) and time of key operation (3-digit
integer). Printout is made up to 16 kinds.
(3) Printout System
(a) Data is printed out in the sequential order starting from the newest data.
(b) When the alarm/retry data in a day does not reach 20 kinds, it is printed out closely
with no blank line left.
(c) When there is no alarm data or retry data, its title alone is printed.
(4) Notes
(a) Printout can be stopped in steps of day by stop key input.
(b) The data obtained from power-on to power-off is taken as daily data and the data for
up to 256 days is saved onto FD starting from the newest data. In case of continuous
energization, however, a day's data is automatically closed when the day changes
and subsequent data is treated as for the following day.
(c) In case of FD error, processing is terminated with the title alone printed.
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