Samsung WC-M15i Series Service Manual page 11

Reference Information
3-3 Recommended Test Equipment
Samsung recommends the following equipment when servicing the Laser Printer.
Digital Multimeter
Oscilloscope
High Voltage Probe
DCU (Diagnostic Control Unit)
DIAGNOSTIC
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
DCU MODE
IF YOU WANT TO ENTER THE DCU MODE.
TURN THE POWER SWICH ON WHILE PRESSING ALL THREE KEYS.
3-6
A digital multimeter with attached LED or LCD 4-digit Panel
A digitizing oscilloscope which can measure more than 100MHz
A high voltage probe which can measure about less than 10KV
DCU can be supplied from Samsung which can easily shows the engine's
error status
Table 3-4-1 Equipment List
DIAGNOSTIC CINTROL UNIT
QUICK REFERENCE
STATUS
DIAGNOSTIC CODE
MAIN MOTOR ON
MHV ON
THV "-"ON
THV "+" REF VOLTAGE
BIAS ON
LSU ON
PICK UP ON
CHECK PAPER EMPTY SENSOR
CHECK FEED EXIT SENSOR
CHECK COVER SENSOR
FUSER ON
HOT BURNING
CLEAN PRINT
CHECK THV ON DUTY
THERMISTER II CHECK
FAN ON
DOWN
UP
Model :ML-6000 Series
DocuPrint
BIAS0
04 BIAS52 BIAS1
LSU MOTOR
05 LSU READY LSU MOTOR & LD
MP PAPER
07 1ST PAPER SCF PAPER EMPTY
FEED SENSOR
08 ENVELOPE EXIT SENSOR
09 COVER OPEN
STANDBY
10 OVER HEAT
PRINT HEAT
ON
OFF
STATUS CODE
00 READY(LEGAL)
01 READY(LETTER)
02 READY(A4)
03 READY(EXECUTIVE)
04 READY(B5)
05 READY(FDLIO)
20 PRINT START
22 PRINT START(2'CASSETTE)
23 PRINT START(MP TRAY)
30 FEED SENSOR 1'st ON
31 FEED SENSOR 1'st OFF
40 FEED SENSOR 2'nd ON
50 PAPER OUT
60 OPEN FUSER ERROR
61 WARM UP
62 LOW HEAT ERROR
64 COVER OPEN ERROR
68 OVER HEAT ERROR
70 NO PAPER or NO CASSETTE
71 PAPER JAM0
72 PAPER JAM1
73 PAPER JAM2
90 MPF PRINT MODE
94 NO PAPER in MP TRAY
95 LSU NOT READY
99 GREEN MODE
SHIFT
Figure 3-4-1 DCU
P1202
SELF
TEST
STOP
ENTER
Samsung Electronics