E02B04/ Upper Cover Sensor Error; E02B05/ E02B07/ Right Cover Sensor Error; E02B06/ Carriage Cover Sensor Error; E02B08/ Paper Release Lever Error - Canon W6400 Series Service Manual

Chapter 6
2. If the media causes excessive ink seepage, change the media.
3. Clean the head and repeat adjustment. Replace the head if adjustment is still not possible after cleaning the head.
4. Replace the registration sensor and repeat adjustment.
5. Replace the head relay PCB.
6. Replace the carriage relay PCB.
7. Replace the engine controller.
8. Replace the system controller.

6.1.4.18 E02B04/ Upper cover sensor error

<Cause>
This is displayed when the upper cover safety switch has detected upper cover open status even though it is locked.
<Probable problem locations>
Upper cover, upper cover safety switch, upper cover lock unit, engine controller and system controller
<Remedy>
1. Operation check
Replace the sensor if the upper cover sensor flag or upper cover safety switch is damaged, deformed or is otherwise malfunctioning.
Remove any foreign objects adhering to the upper cover lock unit.
2. Upper cover safety switch
Check operation using SERVICE MODE>I/O DISPLAY, and replace if anything does not function normally.
3. Cable connection check
Replace the cable connecting the upper cover safety switch and engine controller if the connection is not functioning normally.
4. Upper cover lock unit
Check operation, and replace if it is not functioning normally.
5. Cable connection check
Replace the cable between the upper cover lock unit and engine controller if the connection is not functioning normally.
6. Replace the engine controller.
7. Replace the system controller.

6.1.4.19 E02B05/ E02B07/ Right cover sensor error

<Cause>
This is displayed when the right cover sensor has detected right cover open status even though it is locked.
<Probable problem locations>
Right cover, right cover lock unit, right cover sensor, engine controller, system controller
<Remedy>
1. Visual check
Replace the right cover or right cover lock unit if any of them are damaged, deformed, or otherwise does not function normally.
2. Right cover sensor
Check operation using SERVICE MODE>I/O DISPLAY, and replace if anything does not function normally.
3. Cable connection check
Replace the cable between the right cover sensor and engine controller if the connection is not functioning normally.
4. Replace the engine controller.
5. Replace the system controller.

6.1.4.20 E02B06/ Carriage cover sensor error

<Cause>
This is displayed when the carriage cover sensor has detected that the carriage cover is open while the upper cover is locked.
<Probable problem locations>
Operating procedure, carriage cover sensor, carriage relay PCB, engine controller, system controller
<Remedy>
1. Operation check
Close the carriage cover firmly.
2. Visual check
Replace the carriage cover if it is damaged, deformed, or otherwise does not function normally.
3. Carriage cover sensor
Check operation using SERVICE MODE>I/O DISPLAY, and replace if anything does not function normally.
4. Cable connection check
Replace the cable between the carriage cover sensor and carriage relay PCB if the connection is not functioning normally.
5. Replace the carriage relay PCB.
6. Cable connection check
Replace the cable between the carriage relay PCB and engine controller if the connection is not functioning normally.
7. Replace the engine controller.
8. Replace the system controller.

6.1.4.21 E02B08/ Paper release lever error

<Cause>
The pinch roller pressure sensor has detected that the paper release lever is open while the upper cover is locked.
<Probable problem locations>
Operating procedure, pinch roller pressure sensor, engine controller, system controller
<Remedy>
6-10
0008-6521
0008-6522
0008-6523
0010-0372