Canon L120 Series, Service Manual

Page: 148 / 158

Chapter 5
5-24
F-5-11
5.5.5.2 Faculty Test
5.5.5.2.1 PRINT TEST PATTERN
0010-3263
FAX-L100 / FAX-L120
From the FUNCTION menu, select PRINT TEST PATTERN.
In this test, the printer unit will be used to print various patterns. For service work, be sure to use the BLACK pattern and the SQUARE pattern.
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.
5.5.5.2.2 ADF FEED TEST
0010-3269
FAX-L100 / FAX-L120
From the FUNCTION menu, select ADF FEED TEST.
Use the test to make sure that the ADF function of the sheet reader unit operates normally.
5.5.5.2.3 Sensor Tests
0010-3273
FAX-L100 / FAX-L120
From the H/W TEST menu, select SENSOR TEST.
In this test, you can check the status of each sensor of this fax in items 1 to 4 on the display.
You can also check if sensors that use actuators and microswitches are operating correctly by moving the actuator or microswitch.
F-5-12
5.5.5.2.4 Operation Panel Tests
0010-3338
FAX-L100 / FAX-L120
From the H/W TEST menu, select KEY TEST.
Use the test to make sure that the buttons on the operation panel operate normally.
H/W TEST SIGNAL TEST
RELAY TEST
SENSOR TEST
DIAL TEST
VOLUME TEST
KEY TEST
FUNCTION PRINT TEST PATTERN
ADF FEED TEST BLACK
E
FIX
ASF
WHITE
SQUARE
*
*
*
*
SENSOR TEST HOOK1 TEST
HOOK2 TEST
ADF TEST
CRG TEST
RING DETECT
CNG DETECT
HOOK1=ON
HOOK2=ON
DS=OFF
DES=OFF
CRG=ON
TN=191
STATUS=OFF
CNG=OFF