Canon i-SENSYS MF724Cdw

Function Overview

The debug log is a log that analyzes the program behavior of the machine to enable developers to identify problems. This machine is embedded with a function that compiles the log of the behavior of each software module as debug log and outputs it as integrated log for analyzing problems. Be sure to collect the debug log when the Support Dept. of sales company so instructs. Note that there is no need for service technicians to check the content of collected debug log.

Cases in which collection of debug log is effective

Collection of debug log is effective in the following cases:

• Neither the Support Dept. of sales company nor CINC can reproduce the trouble that occurred at the customer site
• When the error frequency is low
• When the failure is suspected to be due to firmware rather than a mechanical/electrical failure.

NOTE:

If the procedure for reproducing the failure is clear and the Support Dept. of sales company and CINC can reproduce it, collection of debug log is not necessary

Conditions for collecting logs

Conditions for not being able to collect logs

In the following cases, the procedure for obtaining logs is not required because logs cannot be obtained.

• Service mode screen cannot be accessed
• The machine cannot recognize a USB flash drive
• No USB port is installed in the machine (when the model has only a copy function)

What is necessary to collect logs

A USB flash drive that satisfies the following conditions is required to obtain the debug logs of the machine:

• Formatted in FAT 16/FAT32
• With sufficient free space (of several MB)
• Can be recognized by the machine

Collection procedure

The following shows the procedure for collecting the debug log from the Control Panel.

1. Connect a USB flash drive to the machine.
2. Execute the following service mode from the Control Panel or Remote UI.
   • COPIER > FUNCTION > SYSTEM > LOGWRITE
   "Executing..." is displayed while log collection is executed. When it is completed, the screen shows the service mode screen again.
3. Remove the USB flash drive by the correct procedure.
   Connect the USB flash memory to the PC, and check that the log file (SUBLOG.TXT) has been saved.

CAUTION:

The debug log file (SUBLOG.TXT) that can be collected from the machine is saved in clear text data that is not encrypted. As this data may contain information attributed to the user, it is necessary to gain approval from the user before collecting it. Also, the collected file needs to be handled in the same manner as that for user data necessary for reproduction.

NOTE:

The following information is not included in the debug log of the machine:

• Job list (job name, user name, address)
• Communications log (address, user name)
• Job log (user name, job name)