Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 72

E Detailed Occurance Items
code code area
E021 -0301 -05 Title
Description
of detection
Measures
E021 -0302 -05 Title
Description
of detection
3
Measures
3-46
Description
Developing sleeve drive motor (C) error
The lock signal of the developing sleeve drive motor (C)
(M24) cannot be detected within a specified period.
• Connector disconnected, breaking (shorting)
• Failure of the developing assembly (Sleeve
overloaded)
• Failure of the DC controller interface PCB (Fuse (FU5
burns))
• Failure of the developing sleeve motor
1. Check the connection between the developing sleeve
drive motor (C) (UN24) and the DC controller interface
PCB (UN2). (Connection of the connector, Breaking
(shorting))
Motor side: J7537, J8034 PCB side: J1220
2. Replace the developing assembly (C).
3. Replace the DC controller interface PCB.
4. Replace the developing sleeve drive motor (C).
Developing sleeve drive motor (C) error
Lock signal of Developing sleeve drive motor (C) (M24)
cannot be detected for the specified period of time after
first detection
• Connector disconnected, breaking (shorting)
• Failure of the developing assembly (Sleeve
overloaded)
• Failure of the DC controller interface PCB (Fuse (FU5
burns))
• Failure of the developing sleeve motor
1. Check the connection between the developing sleeve
drive motor (C) (UN24) and the DC controller interface
PCB (UN2). (Connection of the connector, Breaking
(shorting))
Motor side: J7537, J8034 PCB side: J1220
2. Replace the developing assembly (C).
3. Replace the DC controller interface PCB.
4. Replace the developing sleeve drive motor (C).
E Detailed Occurance Items
code code area
E021 -0401 -05 Title Developing sleeve drive motor (Bk) error
Description The lock signal of the developing sleeve drive motor (Bk)
of detection (M18) cannot be detected within a specified period.
• Connector disconnected, breaking (shorting)
• Failure of the developing assembly (Sleeve
• Failure of the DC controller interface PCB (Fuse (FU5
• Failure of the developing sleeve motor
Measures 1. Check the connection between the developing sleeve
2. Replace the developing assembly (Bk).
3. Replace the DC controller interface PCB.
4. Replace the developing sleeve drive motor (Bk).
E021 -0402 -05 Title Developing sleeve drive motor (Bk) error
Description Lock signal of Developing sleeve drive motor (Bk) (M18)
of detection cannot be detected for the specified period of time after
first detection
• Connector disconnected, breaking (shorting)
• Failure of the developing assembly (Sleeve
• Failure of the DC controller interface PCB (Fuse (FU5
• Failure of the developing sleeve motor
Measures 1. Check the connection between the developing sleeve
2. Replace the developing assembly (Bk).
3. Replace the DC controller interface PCB.
4. Replace the developing sleeve drive motor (Bk).
Description
overloaded)
burns))
drive motor (Bk) (UN18) and the DC controller interface
PCB (UN2). (Connection of the connector, Breaking
(shorting))
Motor side: J7538, J8243 PCB side: J8236, J1227
overloaded)
burns))
drive motor (Bk) (UN18) and the DC controller interface
PCB (UN2). (Connection of the connector, Breaking
(shorting))
Motor side: J7538, J8243 PCB side: J8236, J1227