Specifications

2.4 CODE #21 — SCANNER HOME POSITION ERROR
- Definition -
The scanner home position sensor remains off (LOW) 8 seconds after the
main switch is turned on.
- Possible Causes -
• Scanner home position sensor short
• Scanner motor defect
• Main board defect
• DC power supply unit defect
- Action -
Turn the main switch off and on.
Check the position of the 1st scanner sensor actuator.
Home Not Home
Does the scanner motor rotate when the main switch is turned on?
No Yes
Retighten the Allen screws on the scanner drive pulley.
Check the voltage at CN107-2 on the main board.
34V 0V
Replace the dc power supply unit.
Check the voltage at CN105-1 and 6 on the main board.
34V 0V
Replace the main board.
Check the voltage at CN105-2 to 5 on the main board with the main
switch on.
31V 34V
1 December 1990
6-28