Alignment & Troubleshooting
Service Manual
4-2
Samsung Electronics
4.1.2 Function
4.1.2.1 KEY Function
There are one keys present. The one is Stop key.
If users input key value, the key input is transferred via GIP (General Input Port) and the operation to be
defined by key value is processed.
4.1.2.1.1 Functions
Stop key function is made up of
- Demo page/Configuration sheet printing function
- Job cancels function
- Start manual feeding function
- Firmware downloads mode function
4.1.2.1.2 Detail Description
KEY input detection & process order
1) User KEY input
2) KEY input detection
: If the key input is detected when the key input check per timer tick 10ms, The 10ms interrupt service
routine sends the key detection event to panel task.
3) KEY input process
- Stop key input process
: After the panel task is received the Stop key detection event, it checks the engine error status two times
and process the operation to be defined by key value.
- Demo page/Configuration sheet function
This button will have multiple functions when the printer is in idle state.
Demo page printing
Press and hold this button for about 2 seconds until the control panel lights blink slowly to print a demo
page.
Configuration sheet printing
Press and hold this button for about 5 seconds until the control panel lights blink rapidly to print a
configuration sheet.
- Job cancels function
When the printer is printing an active printing job, press and holds this button until the control panel lights
blink to cancel a job the printer is currently except the manual job.
- Start manual feeding function
When you select manual feed for paper source, press this button each time you feed a sheet of paper
manually.
The application of manual feeding function in CLP-310 series will be determined
- Firmware downloads mode function
Turn on the printer at the same time that the button is pressed.
If all LEDs scroll, release the button and download the firmware ROM file via USB port
