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Service Manual
Alignment & Troubleshooting
4-18
4.1.5 Engine Test Mode
The Engine Test Mode supplies useful functions to check the condition of the print engine. It tests the con-
dition of each device and displays the result of the test on the LCD. It is divided into 5 functions (0~4), and
these are shown below.
4.1.5.1 To enter the Engine Test Mode
To enter the Engine Test mode
Press in sequence, and the LCD briefly displays
‘Engine Test’, the machine has entered Engine Test Mode.
Press “0”, “1”, “2”, “3” or “4” to select the Test No. (see list below – left hand column)
4.1.5.2 Diagnostic
NO. Sub No. Engine test Remark
0 1 Motor Test 1 : On, 2 : Off – next test selected
2 Pick Up Test 1 : On, 2 : Off – next test selected
3 Fan Test 1 : On, 2 : Off – next test selected
4 Manual Clt Test 1 : On, 2 : Off – next test selected
5 PTL Test 1 : On, 2 : Off – next test selected
1 1 LSU Motor Test 1 : On, 2 : Off – next test selected
2 LSU Hsync Test 1 : On, 2 : Off – next test selected
3 LD Test 1 : On, 2 : Off – next test selected
2 1 Feed Sensor Test 1. Check : read the sensor
2. Next : Next Sensor test
2 Exit Sensor Test 1. Check : read the sensor
2. Next : Next Sensor test
3 Cover Sensor Test 1. Check : read the sensor
2. Next : Next Sensor test
4 Empty Sensor Test 1. Check : read the sensor
2. Next : Next Sensor test
5 Manual Sensor Text 1. Check : read the sensor
2. Next : Next Sensor test
3 1 Therm ADC 180 1 : On, 2 : Off (maintain the fusing temp. 80C)
2 Therm ADC 140 1 : On, 2 : Off (maintain the fusing temp. 135C)
3 Therm ADC 120 1 : On, 2 : Off (maintain the fusing temp. 160C)
4 Therm ADC 100 1 : On, 2 : Off (maintain the fusing temp. 191C)
4 1 MHV Test 1 : On, 2 : Off (-1550V ± 50V)
2 Dev Bias Test 1 : On, 2 : Off (-430V ± 20V)
3 THV EN/NEG Test 1 : On, 2 : Off (-1000V +300V/-150V)
4 THV ON (1300V) 1 : On, 2 : Off (+1300V ± 20V)
5 THV ADC 1300V 1 : On, 2 : Off (ADC Value : 101 ± 5)
6 THV ADC 600V~3500V 1 : On, 2 : Off (Compare each ADC Value)