HP 46 - D: Service

Appendix D
Service
If the calculator fails to turn on properly, check these possible causes:
1. Is the calculator set to operate on the correct line voltage?
2. Is the fuse burned out (look for a broken filament inside the
fuse)? Follow steps 2a and 2c of the ‘Turn-on Procedure’ when
checking or replacing the fuse.
Should the calculator print anything but ‘CLEAR’ when it is switched
on, carefully press the following sequence of keys and compare the
printout (and display, if installed) with those shown.
NOTE
Be sure is released (up).
1.
Press:
(cear)
CLEAR
-l
o
D|sp|ay[7[]fl
1234567890409
2.
Press:
1234567890
zf
e
Display: /29456 7H510 . 9999999999499 o
3. Press:
Display: -/ . Z945E 7H90 059
4. Press: @ l
Display: 5.5959555955559 559
—“Zz-27v
51