Utax AK 740, Service Manual

Page: 67 / 207

3N0/3NK/3PD/3PG
1-4-22
1-4-3 Self-diagnostic function
(1) Self-diagnostic function
This machine is equipped with self-diagnostic function. When a problem is detected, the machine stops print-
ing and display an error message on the operation panel. An error message consists of a message prompting
a contact to service personnel and a four-digit error code indicating the type of the error.
(2) Self diagnostic codes
If the part causing the problem was not supplied, use the unit including the part for replacement.
Code Contents Causes
Check procedures/
corrective measures
8010 Punch motor 1 error
When the punch motor is
driven, punch home position
sensor does not turn on within
200 ms.
Punch motor
1. Execute U240 Motor - Punch to check
the finisher operation (see page 1-3-7).
2. Manipulate the punch up and down to
check it can smoothly move up and
down.
3. Check that the drive from the motor
reaches the punch cam.
4. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Punch motor and Punch PWB (YC4)
5. If the wiring is disconnected, shorted or
grounded, replace the wiring.
6. Replace the punch motor.
Punch home
position sensor
1. Execute U241 Punch - Punch HP to
check the finisher switch (see page 1-3-
9).
2. Check that the sensor and its mounting
bracket are correctly positioned.
3. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Punch home position sensor and Punch
PWB (YC8)
4. Replace the Punch home position
sensor.
Punch PWB
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Punch PWB (YC1) and DF main PWB
(YC7)
2. Replace the punch PWB.
DF main PWB Replace the DF main PWB.(see page 1-5-2)