Canon imageRUNNER ADVANCE C350 series Service Manual page 167

2
Technical Explanation > External Auxiliary System > Service Tasks > Periodical Servicing
● Effects of Spanning Tree-supported Hub
If you set the network as a loop, data keeps staying in this loop and efficiency of data transfer
might be decreased. In order to prevent this symptom, some hubs have the function called
"spanning tree". If this function is enabled, the device newly connected to the hub can make
data communication with network 10 to 50 seconds (time changes due to the conditions)
after the connection. When the machine enters Deep sleep mode and restores from the sleep
mode, the machine electrically disconnects with the network once. Therefore, if the machine
connects with the spanning tree-installed hub, the machine cannot communicate with network
for approximately 1 minute at a maximum after restoring from the Deep sleep mode.
For this reason, right after restoring from the Deep sleep mode, the following symptoms might
occur: Device status cannot be collected, printing cannot be made, and login using a login
application cannot be made. If such symptoms become any problems, perform the following
operations.
• Using Settings/Registration, set not to enter the Deep sleep mode.
Preferences > Timer/Energy Settings > Sleep Mode Energy Use > High
• Disable the spanning tree function of hub.
• Request users to use the hub which supports Rapid Spanning-Tree
• Protocol (RSTP) that resolved such problems.
● Conditions to operate the heater
When the Environment At standby
At printing
Switch is turned ON
When the Main Power
Switch is turned OFF
At sleep state
2 Technical Explanation > External Auxiliary System > Service Tasks > Periodical Servicing
■ Periodically Replaced Parts
None.
■ Consumable Parts
None.
■ Periodical Servicing
None.
Perform as needed.
Drum Heater
ON
OFF
ON
ON
T-2-64
Service Tasks
2-124
2-124