Service manual

REPAIR
SERVICE MANUAL
Troubleshooting
3-47
7.3.6. CR (Carriage Reset) Test
The CR test checks the carriage home position.
(1) From the Self Test menu, press "B". The following display appears:
THE MODE TO ADJUST FOR THE HOME POSITION OF CR
*****
*****
Press RETURN or CANCEL to reset this machine.
CR PHASE OFF
HP SENSOR OFF
UP ARROW KEY – Turn CR motor on with 'AB' phase.
DOWN ARROW KEY – Turn CR motor off.
LEFT ARROW KEY – Move CR by 1 step in backward direction.
RIGHT ARROW KEY – Move CR by 1 step in forward direction.
Fig. 3.31 CR Test Start Display 1
NOTES
•
The following keys may be used to check the CR position as described:
1. UP ARROW key – turns CR motor with "AB" phase.
2. DOWN ARROW key – turn CR motor off.
3. LEFT ARROW key – moves CR by 1 step backward (right to left) (CR phase change
direction is AB
→
A
→
DA
→
D
→
CD
→
C
→
BC
→
B).
4. RIGHT ARROW key – moves CR by 1 step forward (left to right) (CR phase change
direction is AB
→
B
→
BC
→
C
→
CD
→
D
→
DA
→
A).
5. RETURN or CANCEL key – ends the test (resets the carriage to the default home
position and returns to the Main Menu).
•
If no keys are pressed within 60 seconds after turning the motor on, the motor is turned
off.