Alignment And Adjustments - Samsung ML-1755 Service Manual

6
6

6. Alignment and Adjustments

This chapter describes the main functions for service, such as the product maintenance method,
the test output related to maintenance and repair, DCU using method, Jam removing method, and
so on. It includes the contents of manual.
6.1 How to use DCU
6.1.1 DCU Setup
You can examine the malfunction of the printer. To perform DCU, open the front discharge cover and leave
the connect the harness wire(10 pin/4 pin) to the CN10(4 pin) of the Main control board.
Samsung Electronics
ML SERIES DIAGNOSTIC CONTROL UNIT
STATUS
DIAGNOSTIC
DIAGNOSTIC CODE
00 MAIN MOTOR OPERATING SYSTEM
01 MAIN HIGH-VOLTAGE ON
TRNSFER HIGH-VOLTAGE (-)ON
02
THV(+) REFERANCE VOLTAGE
03
DEV/SUPPLY HIGH-VOLTAGE ON/PTL ON
04
LSU OPERATING SYSTEM
05
PICKUP CLUTCH ON
06
PEEMPTY/PWITH/NEW CRU TEST
07
FEED & EXIT SENSOR TEST
08
COVER OPEN SENSOR TEST
09
FUSER TEST
10
HOT BURN TEST
11
CLEAN MODE PRINT
12
THV(+)TRIGGER, ALL HV & FAN ON
13
THV(+) REFERENCE ON
14
DIAGNOSTIC
MODE
TO ENTER DIAGNOSTIC MODE, PUSH THREE BUTTONS SIMUL ANEOUSL
AND TURN THE PRINTER POWER ON.
04 DEV 300 DEV 350
05 LSU READY LSU MT & LD
07 PAPER EMPTY PAPER WIDTH
08 EXIT SENSOR
09 COVER OPEN
10 COER HEATING PRINTING TEMP
ON OFF
STATUS CODE
61 WARM UP
00 READY (REGAL)
READY (LETTER)
01
02 READY (A4)
03 READY (EXECUTIVE)
READY (B5)
04
PRINT START
20
30 FEED SENSOR ON
40 FEED SENSOR OFF
PAPER OUT
50
SLEEP MODE
69
ERROR STATUS CODE
OPEN FUSER ERROR
60
LOW TEMPERATURE ERROR
62
OVER HEATING ERROR
68
COVER OPEN ERROR
64
NO PAPERR
70
PAPER JAM 0
71
PAPER JAM 1
72
PAPER JAM 2
73
95 LSU NOT READY
DOWN SHIFT
UP
ALIGNMENT & A D J U S T M E N T S
DEV 350
LSU MOTOR
NEW CRU
SELF
FEED SENSOR
TEST
READY HEAT
STOP
ENTER
Training Manual
6-1