Konica Minolta Bizhub 20p Service Manual page 255

• Check the Solenoid.
Verify that the ejector solenoid is turned on when the regist front sensor is turned on.
Verify that the regist solenoid is turned on when the regist rear sensor is turned on.
Verify that the MP solenoid is turned on when the MP PE sensor is turned on.
Verify that the Tray 1 solenoid is turned on when the Edge sensor is turned on.
• When the verification is completed, turn the power off.
10) Continuous Grid Pattern Print Mode
This mode is to continuously print a grid pattern with a total counter value on it. The
number of grid pattern prints is displayed at the same time.
11) Fixing Unit Test Print
This is to print the following three patterns to check the fixing unit.
• Grid pattern with a serial number on it
• Gray pattern
• Black pattern
12) NV-RAM Value Dump Mode
This is to collectively print the whole present state of the NV-RAM of the machine.
13) RAM Check
This is to execute a stricter RAM check than a standard one.
If the result turns out unaccepted, it considers an error, and all LEDs blink. If it turns out
accepted, the Status LED blinks. (Yellow
14) QA Test print
This is to print four patterns to check the machine quality. When this operation is
completed, the machine automatically goes back to the waiting Service mode state.
15) DX setting (ON/OFF)
Select the ON/OFF of duplex setting. Whenever you switch the mode, the setting is
changed over from the present one to other. LEDs are as follows when changing the
setting.
When changing from DX OFF to ON.
Back
Toner and Drum LEDs
Cover
light for 1 second.
Toner
Drum
Paper
Status

Green)
When changing from DX ON to OFF.
Back
Cover
Toner
Drum
Paper
Status
6-8
All LEDs does not
light.
Confidential