Specifications

2.5 CODE #22 — SCANNER HOME POSITION ERROR
- Definition -
The scanner home position sensor remains on (HIGH) 1.0 second after the
scanner starts.
- Possible Causes -
• Scanner home position sensor circuit open
• Scanner motor defective
• Main Motor defective
• DC power supply unit defective
- Action -
Turn the main switch off and on actuator position.
Check the position of the 1st scanner sensor actuator.
Not Home
Home
Does the scanner motor rotate when turning on the main switch is
turned on?
No Yes
Tighten 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.
29V 34V
1 December 1990
6-30