Samsung SCX 4200-XAX Alignment & Adjustment
Alignment and Adjustmens
Samsung Electronics
Service Manual
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4
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4. Alignment and Adjustments
This chapter describes some of the main service procedures including:
Using the EDC mode; Clearing paper jam and test patterns.
Much of this chapter is also included in the user's guide.
4.1 Engine Test Mode
The Engine Tests Mode supplies useful functions to check the condition of the engine. It tests the condition of
each device and displays the result of the test on the LCD. It is classified into 5 functions (0~4), and are shown
below.
4.1.1 To enter the Engine Test Mode
To enter the Engine Test mode
Press “ Menu -> Copies -> -> Menu -> ” in sequence, and the LCD briefly displays
'Engine Test [Diagnostic]', the machine has entered Engine Test Mode.
• To enter a lower menu (Sub menu) Press the Start/Enter key.
• To exit into an upper menu Press the Menu/Exit key.
• To return to the user menu Press the Menu/Exit key.
4.1.2 Diagnostic
Main Menu Engine test Remark
ENGINE TEST Motor Test 1 : On, 2 : Off
MTR FAN SOLETC PickUp Test 1 : On, 2 : Off
Fan Test 1 : On, 2 : Off
Manual Clt Test 1 : On, 2 : Off
PTL Test 1 : On, 2 : Off
ENGINE TEST LSU Motor Test 1 : On, 2 : Off
LSU TEST LSU Hsync Test 1 : On, 2 : Off
LD Test 1 : On, 2 : Off
ENGINE TEST Feed Sen Test Check : Check Start
SENSOR TEST Next : Next Sensor Check
Exit Sen Test Check : Check Start
Next : Next Sensor Check
Cover Sen Test Check : Check Start
Next : Next Sensor Check
Empty Sen Test Check : Check Start
Next : Next Sensor Check
Manual Sen Text Check : Check Start
Next : Next Sensor Check
ENGINE TEST Therm ADC 220~85 1 : On, 2 : Off (maintain the fusing temp. 65C~230C)
HEA TTEST
ENGINE TEST MHV Test 1 : On, 2 : Off (-1550V ± 50V)
HVPS TEST Dev Bias Test 1 : On, 2 : Off (-430V ± 20V)
THV EN/NEG Test 1 : On, 2 : Off (-1000V +300V/-150V)
THV ON (1300V) 1 : On, 2 : Off (+1300V ± 20V)
THV ADC 1300V 1 : On, 2 : Off
THV ADC 600V~3550V 1 : On, 2 : Off (Compare each ADC Value)
Samsung Electronics
Service Manual
Alignment and Adjustmens
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4.2 Paper Path
SCAN PART
Paper Input (Cassette)
Paper Input (Manual Feeder)
Paper Out (Face Down)
Paper Empty Sensor (Manual)
Paper Empty Sensor (Cassette)
Paper Feeding Sensor
Paper Exit SensorPaper Out (Face Up)
SCAN PART
SCAN PART
SCAN PART
1) After receiving a print command, the printer feeds paper from the main cassette or manual feeder as required.
2) The paper being fed passes the paper feed sensor. (Jam 0 occurs if the sensor is not operated within a certain
time)
3) Having passed the paper feed sensor the paper moves to the paper exit sensor via printing process. (Jam 1
occurs if the sensor is not operated within a certain time)
4) The paper then passes through the paper exit sensor and out of the set. (Jam 2 occurs if the trailing edge of the
paper does not pass the exit sensor within a certain time of the paper leading edge activating the exit sensor)
<Jam0> <Jam1> <Jam2>
Alignment and Adjustmens
Samsung Electronics
Service Manual
4-3
4.3 Clearing Paper Jams
When a paper jam occurs, "Paper Jam" appears on the display . Refer to the table below to locate and clear the paper jam.
To avoid tearing the paper, pull the jammed paper out gently and slowly. Follow the steps on the next pages to clear the jam.
Message Location of Jam
PAPER JAM 0 OPEN/CLOSE DOOR In the paper tray
PAPER JAM 1 OPEN/CLOSE DOOR In the paper exit area
PAPER JAM 2 CHECK INSIDE In the fuser area or around the toner cartridge
BYPASS JAM In the manual feeder
1 Open and close the front cover. The jammed paper
is automatically ejected from the machine. If the
paper is not ejected continue to step 2.
2 Pull the paper tray open.
3 Remove the jammed paper by gently pulling it
straight out.
If there is any resistance and the paper does not
move when you pull or if you cannot see the paper
in this area, skip to the fuser area around the toner
cartridge. See page 6-5
4 Insert the paper tray into the machine until it snaps
into place.
5 Open and close the front cover to resume printing.
4.3.1 In the Paper Tray
Samsung Electronics
Service Manual
Alignment and Adjustmens
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1 Open and close the front cover. The jammed paper
is automatically ejected from the machine. If the
paper is not ejected continue to step 2.
2 Gently pull the paper out of the front output tray.
Skip to step 9.
If you cannot see the jammed paper in the front
output tray, continue to step 3.
3 Open the jam cover by lifting the front edge of the
scanner unit. The support lever will automatically
pop up.
4 Pull the paper out gently.
5 Close the jam cover by pushing the support tab to
the left and hold it down whilst lowering the cover
carefully until the cover fully down, this will hold
down the tab.
If there is any resistance and the paper does not
move when you pull or if you cannot see the paper
in the jam cover, continue to step 6.
6 Open the rear cover.
7 Remove the jammed paper by gently pulling it
straight out.
8 Close the rear cover.
9 Open and close the front cover to resume printing.
4.3.2 In the Paper Exit Area
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