Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 87

E Detailed Occurance Items
code code area
E073 -0001 -05 Title Host machine interlock failure
Description Interlock at 24 V cannot be detected in the condition
of detection where all of the front cover, left lower cover, and manual
feed cover are closed.
Measures 1. Check whether shorting does not occur to the harness
of the interlock group. If it occurs, replace the harness.
2. Replace the relay board. (Blowout at the relay PCB
(UN7))
3. Replace the interlock switch.
E074 -0001 -05 Title Primary transfer roller detachment/attachment error
Description The primary transfer roller attachment/detachment HP
of detection sensor (PS4) cannot detect the home position within a
specified period.
Measures 1. Check the connection between the primary transfer
roller detachment HP sensor (PS4) and the ITB relay
PCB (UN28). (Connector, Breaking (shorting))
Sensor side: J7113 PCB side: J2701
2. Check the connection between the ITB relay PCB and
the DC controller interface PCB. (Connector, Breaking
(shorting))
ITB relay PCB: J2700, J8050 DC controller interface
PCB: J1247, J8010
3. Replace the primary transfer roller detachment HP
sensor.
4. Check the link parts of the primary transfer roller
(pressure release lever, link, cam).
If foreign matters are found, remove them. If they are
soiled with toner, etc., perform cleaning (when the
parts do not move smoothly due to dirt).
5. Check whether the gear is not damaged.
If it is damaged, replace the attachment/detachment
drive unit (FM3-4905).
Description
• Front door open/close switch 1 (SW1)
• Front door open/close switch 2 (SW2)
• Manual feeding unit open/close switch (SW3)
• Paper delivery door open/close switch (SW5)
E Detailed Occurance Items
code code area
E075 -0000 -05 Title Steering HP error
Description The home position of the steering roller cannot be
of detection detected. It cannot move from the home position.
Measures 1. Check the connection between the steering drive
2. Check the connection between the steering drive motor
3. Replace the parts.
E075 -0001 -05 Title ITB displacement sensor lower limit error
Description The output value of the ITB displacement sensor (PS2)
of detection continues to be the lower limit value.
Measures 1. Check the connection between the ITB displacement
2. Clean the ITB displacement sensor.
3. Replace the parts.
E075 -0002 -05 Title ITB displacement sensor upper limit error
Description The output value of the ITB displacement sensor (PS2)
of detection continues to be the upper limit value.
Measures 1. Check whether the ITB displacement sensor (PS2) and
2. Replace the parts.
Description
HP sensor (PS3) and the ITB relay PCB (UN28).
(Connector, Breaking (shorting))
Sensor side: J7416, J8045 PCB side: J2701
(M4) and the ITB relay PCB. (Connector, Breaking
(shorting))
Sensor side: J7414, J8044 PCB side: J2701
• Steering drive HP sensor
• Steering drive motor
sensor (PS2) and the ITB relay PCB (UN28).
(Connector, Breaking (shorting))
Sensor side: J7415 PCB side: J2702
the ITB displacement sensor flag are installed properly.
• Isn't the ITB displacement sensor flag inserted
under the ITB?
• Is the ITB displacement sensor installed
correctly?
• Replace the ITB displacement sensor flag (if the
flag is damaged).
• Replace the ITB displacement sensor.
• Replace the ITB. (Replace the ITB of which edge
is damaged.)
• Replace the steering control mechanism parts.
(Pressure spring removed from the steering arm,
etc.)
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