Use the BLACK print pattern to meke sure that the printout is free of white lines and unevenness; on the other hand, use the SQUARE printout to make sure that

the printout is free of image contraction, elongation, and soiling.

MEMO

After completion of the print test, if the printing was normal, copy a document. If there is any defect in the copied image, there is a defect in the scan

section.

13.4.2.2 Sensor test

i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 /

SENSOR TEST is selected from the H/W TEST menu. In this test, the state of each sensor of this machine can be checked on the display. For the sensor that uses

the sensor arm and the microswitch, the output of the sensor can be confirmed by moving them by the hand.

SENSOR TEST

HOOK1 TEST

HOOK2 TEST

ADF DS TEST

ADF DES TEST

CRG TEST

TN VALUE

RING DETECT

CNG DETECT(AnsMode)

CNG DETECT(FAX/TEL)

F-13-10

13.4.2.3 Key test

i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 /

KEY TEST is selected from the H/W TEST menu. In this test, whether the button on the operation panel works correctly can be checked.

Operation key test

In this test, the character on the display disappears when the key corresponding to the character is pushed. The correspondence table of the character and

the key is as follows.

When the key is pushed for all keys, it is checked that the corresponding character on the display disappears.

Character

0-9,*,#

One-touch dial key test

When the OK button is pushed, it becomes an one-touch dial key test.

The a thorough h characters corresponding to One-touch01 through 08 key are displayed. The character corresponding to respectively disappears when

an one-touch key is pushed. Check that all characters disappear after all one-touch keys are pressed.

13-10

: handset status

: ADF detect

: toner remain value (0-255)