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2-1
Samsung Electronics
CONNECTION DIAGRAM
Repair Manual
2. Connection Diagram
2.1 GDI Connection Diagram(ML-1210/ML-1220M)
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
1
2
3
4
5
6
+24V_T
+24VGND
*PMOTOR
+3. 3V
EXT_CLK
*HSYNC
+5V
+5V GND
*LD_ON
VDO
+5V GND
LSU
POLYGON
MOTOR
LD DIODE
+5V
+5V GND
LED_ERROR
LED_PAPER
LED_DATA
LED_TONER
*KEY_TONER
*KEY_CANCEL
*KEY_DEMO
1
2
3
4
5
6
7
8
9
LED
DISPLAY
PANEL
1
2
3
4
5
6
7
8
9
1
2
+5V
PTL
PT L LED ARRAY
1
2
+24V_T
+24V GND
THVPWM
*THV_EA
THVRE AD
*MHVPWM
BI ASPW M
+5V
+5V GND
1
2
3
4
5
6
7
8
9
HV PS
1
2
3
4
5
6
7
8
9
THERM_A
THERM_B
1
2
1
2
THERMI STOR
+24V
+24VS
1
2
3
1
2
3
COVER
SW ITCH
+5V
*P EMPT Y
1
2
3
4
1
2
3
4
*FEED
+5VGND
SENSOR
BOARD
36
PI N
HO ST
COMPUTER
IEEE1284
COMPATI ABLE
CABLE
J1
CN9
CN7
CN11
CN12
CN13
CN6
CN8
CN5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SMPS
+5V
G
ND
+5V
+5V GND
+5V
+5V GND
+5V
+24V GND
+24V
+24VS
+24V GND
+24V
+24V GND
+24V
EXIT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
FUSER ON
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18
19
20
21
22
23
24
ENGINE
+24VS
FAN
DEV_FUSE
*NEW_DEVE
*
EGMOT _A1
EGMOT
_
PHA
*EGMOT_B1
EGMOT_PHB
4PI N
CONN-
ECT O R
for
US B
USB CABLE
CN3
DCU
CN
1
+5V
DCU_DATA
1
2
3
4
1
2
3
4
DCU_CLK
+5V GND
Not Used
ENGINE+ SMPS
B
Unification
'd
CLUTCH
SOLE -
NOID
CN1
DEV_F U SE
CN3
CN4
FAN
FUSER
CN502
STEP-
PI NG
M
O
TOR
C
N
2
CN5
GDI
Main
Board