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Outline; Outline Of Troubleshooting; Troubleshooting By The Phenomenon; Incorrect Value: Check Value - Canon W6400 Series Service Manual

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6.1 Troubleshooting

6.1.1 Outline

6.1.1.1 Outline of Troubleshooting

1. Outline
There are two types of trouble: trouble which is reported by the messages shown on the display ("Warning," "Error" and "Service call error" ); and trouble
not shown on the display.
In this manual, a colon (:) is used to distinguish the first and second lines of the message.
The alphanumeric code indicating the type of error, that is the "warning", or "error," will be displayed on the printer's display. The letters at the end of the
code indicates the following: W for the "warning" and E for the "error".
See ERROR CODE Error Indications for a list of the problems which can be detailed on the message display.
2. Notice for Troubleshooting
1. Obtain information about the system environment and the type of media used for printing.
2. Before performing troubleshooting, make sure that all cables are connected properly.
3. When servicing the printer with the external cover is removed and the AC power connected, pay special attention when handling the electrical parts or
the boards to avoid an electric shock or short circuit.
4. In the following sections, the troubleshooting steps (action) are described such that the component related to the most probable cause of the problem
will be repaired or replaced first, following by components with less failure probability. If multiple components are the same probability of predicted
failure, the steps are indicated based on how easy the servicing is.
After performing a step, check to see if the problem has been solved by executing a test print. If not resolved, proceed with the next step.
5. When the service has been completed, check to ensure that all connectors/cables are reinstalled and screws are firmly tightened.
6. After performing replacement or repair services, run test prints to check whether the problem has been solved.

6.1.2 Troubleshooting by the Phenomenon

6.1.2.1 Incorrect Value: Check Value

<Cause>
Invalid input value detected for Interface Setup > TCP/IP > IP Setting > IP Address > Subnet Mask > Default G/W from the Main Menu.
<Probable problem locations>
Operating procedure, system controller
<Remedy>
1. Operation check
Check that the message turns off when proper value is entered in [IP Address], [Subnet Mask], or [Default G/W].
2. Replace the system controller.

6.1.2.2 Offline: Load Roll Media

<Cause>
This is displayed when the media sensor detects no roll media during roll media mode.
<Probable problem locations>
Operating procedure, media sensor, engine controller and system controller
<Remedy>
1. Operation check
Load the roll media and check if the message changes.
2. Visual check
Remove any foreign objects adhering to the feed sensor.
3. Media sensor
Check operation using SERVICE MODE>I/O DISPLAY, and replace if anything does not function normally.
4. Cable connection check
Replace the cable connecting the media sensor and engine controller if the connection is not functioning normally.
5. Replace the engine controller.
6. Replace the system controller.

6.1.2.3 Offline: Load Cut Sheet Offline: Remove Cut Sheet

<Cause>
This is displayed when the media sensor detects no sheets in cut sheet mode.
This is displayed when the media sensor detects sheets when switching from cut sheet mode to roll media mode.
<Probable problem locations>
Operating procedure, media sensor, engine controller, system controller
<Remedy>
1. Operation check
Check that the message changes when the cut sheets are loaded or when the cut sheets are removed.
2. Visual check
Remove any foreign objects adhering to the media sensor.
3. Media 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 media sensor and engine controller if the connection is not functioning normally.
5. Replace the engine controller.
6. Replace the system controller.
Chapter 6
0008-6474
0008-6475
0008-6476
0008-6477
6-1

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