Pfaff 4874 Service Manual page 8

TEST PROGRAM - TEST OF LCD DISPLAY
Access to the test program
1. Switch off the machine.
2. While pressing key "2" and "3" simultaneously, switch on the machine.
3. The matrix pattern turns to "LCD test mode".
4. Press "1", the step motors will rotate to their minimum position and the number "12" will
appear on the display.
Tension value can be checked and adjusted as a manner shown in the page E1.
PROG.
5 1 2 3 4
D1