SHARP SP1773 Technical Report

Date: Jun. 16, 1994

COPIER : Z-20, Z-23, Z-25

No. : SP-1773

[Service Information]

SERVICE MANUAL CORRECTIONS

1.Model name: Z-20, 23, 25, 27

2.General: Corrections have been made to the service manual. Please make the necessary

corrections.

3.Description: An error appears in the “Self Diagnosis Function Chart” on P.26, item 2, under the error message column.

(Error)

All indicators except for the ready indicator blink.

Error

• AE sensor output abnormality

• The read value (AESP signal) of the white

mylar section in the back of the table glass detected by the sensor is 0.2V or less.

• Full wave signal is not inputted for more than 1.5 sec.

• AE sensor defect

• Dirt on the light receiving section of the AE Sensor

• White strip on underside of glass is dirty.

• Copy lamp disconnection (breakage)(Does not light up.)

• Power PWB defect

• Main PWB defect

(Correction)