December 2006
6-3
WorkCentre M20, 4118, FaxCentre 2218 Family
GP 1
General Procedures and Information
GP 1 Engine Test Mode Entry
Purpose
To test various functions or components of the machine. The test is performed, then the result
is displayed on the LCD.
NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com-
monly recognised part names.
Procedure
1. Press Menu/Exit, #, 1, 9, 3, 1 in sequence. The LCD will display ‘Engine Test (Diagnos-
tic)’.
2. Press Enter. The machine has now entered service (tech) mode.
3. Use the numbered keys to select the relevant test number. Use the left and right keys to
scroll through the available tests, refer to Figure 1. To view details of each test number,
refer to Table 1 Test Map.
4. To exit engine test mode, switch off the machine, then switch on the machine.
NOTE: To escape from the current test mode to the higher test mode, press the stop button.
NOTE: To escape from the engine test mode to the normal mode, press again the stop button.
Sensor Test Description
Refer to Table 2 Sensor Description, for the sensor names that are displayed on the LCD.
Actuating the relevant sensor changes the displayed state of the sensor.
Table 1 Test Map
Test No. Test Items (Description) Setting Description Setting Description
0 ALL MOTOR TEST ON Runs the Dev motor & Fuser Motor OFF Stops the Dev motor & Fuser Motor
FUSER MOTOR TEST (STEPPER) ON Runs the Fuser Motor only. OFF Stops the Fuser Motor
DEVE MOTOR TEST (BLDC) ON Runs the Developer Motor only. OFF Stops the Developer Motor
FUSER MTR DIR TEST FWD Runs the Fuser Motor forward RVS Runs the Fuser Motor in reverse
ALL MOTOR STOP STOP Stops the Developer Motor & Fuser Motor. NEXT Go to next test item (FCF SOLENOID TEST).
FCF(1st Tray) SOLENOID TEST ON Energizes the Solenoid on the First Cassette Feeder
(FCF). (200ms. timeout)
OFF De-energizes the Solenoid on the FCF.
M P (MP Tray) SOLENOID TEST ON Energizes the Solenoid on the Multi-Purpose Feeder
(MPF). (200ms. timeout)
OFF De-energizes the Solenoid of the MPF.
PTL TEST ON Switches on the Pre-Transfer Lamp (PTL). OFF Switches off the PTL
FAN TEST ON Runs the Fuser Fan.
Runs the LSU fan (M20F).
OFF Stops the Fuser Fan motor.
Stops the LSU Fan motor (M20F).
FUSER CONTROL TEST ON Switches on the Fuser Heater.
(only when the fuser temp is less than the stand-by
temp)
OFF Switches off the Fuser Heater.
FUSER TEMP CHECK CHECK Displays the FUSER ADC VALUE. See below for typi-
cal ADC conversions:
112 = 170C, 105 = 175C, 97 = 180C, 90 = 185C, 84 =
190C, 77 = 195C, 71 = 200C, 66 = 205C, 60 = 210C,
55 = 215C, 51 = 220C, 46 = 225C. Refer to GP 11 for
the correct fuser operating temperatures.
NEXT Go to first test in sequence (ALL MOTOR TEST)
1 LSU MOTOR TEST ON Runs the Polygon Mirror Motor in the LSU. OFF Stops the Polygon Mirror Motor in the LSU.
LASER DIODE TEST ON Switches on the LASER diode in the LSU. OFF Switches off the LASER diode in the LSU
LSU FAN TEST (4118/2218) ON Runs the LSU fan. OFF Stops the LSU fan motor.
LSU READY TEST CHECK Checks the time of LSU ready
The time in milliseconds, will be displayed after approx-
imately 10 seconds. The LSU ready time will include
500 milliseconds stabilisation time.
NEXT Go to next test (LSU HSYNC TEST)
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