Service manual

REPAIR
SERVICE MANUAL
Troubleshooting
3-5
Fig. 3.2 Troubleshooting Flowchart (continued)
Line Feed operates
correctly?
END
A
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Problem No. 7
Problem No. 8
Problem No. 9
Problem No. 10
Problem No. 11
Problem No. 12
Problem No. 13
YES
NO
Does the buzzer sound
when an invalid key is
pressed?
Does an error message
appear on the display?
Does the
fax/modem (optional)
operate properly?
Does the FDD operate
correctly?
Does the unit print
when paper is set, or print when
no paper is set?
Does the LCD display
correctly?
Does the LCD operate?