Service manual

Troubleshooting
4-14
Samsung Electronics
4-5 ENGINE TEST MODE
The Engine Tests Mode provides useful test functions for checking the status of the print engine.
It can test many of the separate sections of the print engine and displays the result of the test on the LCD.
These tests are classified in 6 groups (0~5), and the functions of these tests are shown below.
4-5-1 To enter the Engine Test Mode
Press MENU, #, 1, 9, 3, 1 in sequence, and the LCD briefly displays ‘Engine Test Mode’, the machine has
entered service (tech) mode.
4-5-2 Diagnostic
4-5-3 ENGINE PRINT
When the function is enabled a group of parameters are printed at the bottom of each page which define the
print engine condition. It is a manufacturing test feature not intended for service use.
This setting remains enabled even when you exit from Engine Mode. Remember to turn it off.
No. Sub No. Engine test
0 1 Motor Test 1: On, 2: Off
2 PTL Test 1: On, 2: Off
3 Fan Test 1: On, 2: Off
4 Fuser Test
1
If its temperature is lower than the Standby
(160 C), the fuser is on, but if it is higher than
the Standby, the fuser is off.
: On, 2: Off
1 1 LSU Motor Test 1: On, 2: Off
2 LSU Hsync Test 1: On, 2: Off
3 LD On Test 1: On, 2: Off
4 LSU Operation 1: On, 2: Off
2 1 Feed Sensor Test Sensor On : FEED SENSOR ON Display
Sensor Off : FEED SENSOR OFF Display
2 Exit Sensor Test Sensor On : EXIT SENSOR ON Display
Sensor Off : EXIT SENSOR OFF Display
3 Cover Sensor Test Sensor On : COVER SENSOR ON Display
Sensor Off : COVER SENSOR OFF Display
4 1’st Empty Test Sensor On : 1’st PAPER Empty Display
Sensor Off : 1’st PAPER No Empty Display
5 MP Empty Sensor Test
Sensor Test
Sensor On : MP PAPER Empty Display
Sensor Off : MP PAPER No Empty Display
6 BIN FULL Sensor On : BIN FULL SEN ON Display
Sensor Off : BIN FULL SEN OFF Display
3 1 1’st CAST Solenoid Test 1: On, 2: Off
2 MP Solenoid Test 1: On, 2: Off
3 Duplex Solenoid Test 1: On, 2: Off
4 1 MHV Test 1: On, 2: Off (-1450v)
2 DevBias Test 1: On, 2: Off (-450v)
3 THV EN/NEG Test 1: On, 2: Off
4 THV Test 1: On, 2: Off (1300v)
5 THV Trigger Test 1: On, 2: Off
5 1 CRU Error Check
1: Check, 2: Next
1: Check, 2: Next
6 1 All Function Test
For SMD Test, Push up key : Next function
All Function : No.0~4
2
New OPC Check
Remark