Printer Facilities
Paper feed key
The printer paper feed key, situated adjacent to the On/Off switch, may be pressed at any time (when the
test set is switched on) to advance the paper roll.
Replacing a printer paper roll
Do not replace the printer paper roll while a test is being conducted.
1.
Remove the printer cover by releasing its two fasteners, by giving them each a 1/4 turn.
2.
Remove what remains of the old paper roll, noting where the paper feeds into the printer head,
and place a new roll into the roll tray.
3.
Keeping the edge of the paper ‘sharp’ and straight, feed the end of the paper through the printer
head. It slots in at the bottom just behind the ribbon carrier. Use the paper feed key to advance
the paper through the printer head.
4.
Feed the paper through the slot in the printer cover then replace the cover and secure its
fasteners by giving them a 1/4 turn.
Connecting an external printer
Connect the external printer to the 9 way ‘D’ type plug on the mains input panel at the rear of the test
set.
Lead connections are as shown in figure 25.
Oil test set
Typical Printer
9-way ‘D’ type plug
25-way ‘D’ type socket
pin
3
data from oil test set
to
pin
3
pin
5
signal ground
to
pin
7
pin
6
printer busy line
to
pin
20
pins 1, 7, 8
not connected
pins 2, 4, 9
reserved
27
Figure 25. Typical 9 & 25 Way ‘D’ type plug and socket connections to external printer.
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