Xerox Phaser 3120 - Page 63

7-2
CONNECTION DIAGRAM
Service Manual
7.2 Phaser 3120
THERM
THERM2
1
2
1
2
THERMISTOR
MOTOR
DCU
HOST
COMPUTER
A
A/
1
2
3
4
1
2
3
4
B
B/
CN2
CN7
CN5
CN3
4PIN
CONN-ECTOR
for
USB
USB CABLE
+3.3V
DCU_DATA
1
2
3
4
1
2
3
4
DCU
_
CLK
GND
SPL
MAIN
BOARD
FR-4, 2Layer
1
2
3
4
5
6
LSU
POLYGON
MOTOR
LD
DIODE
1
2
1
2
CN10
CN3
CN9
CN8
CN6
SMPS
HVPS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
CN5
1
2
1
2
1
2
Main Clutch
PTL LED ARRAY
Manual Clutch
1
2
PANEL
FAN
2
1
4
3
6
5
8
7
10
9
12
11
14
13
16
15
18
17
20
19
22
21
24
23
26
25
LSUCLK
nLREADY
nPMOTOR
GND
24VS
*HSYNC
5V
GND
nLD_ON
VDO
GND
+3.3V
PTL
+24V
MP_CLUTCH
+24V
MAIN_CLUTCH
P_EMPTY
P_FEED
3.3V
3.3V
3.3V GND
3.3V GND
5V
3.3V GND
3.3V GND
3.3V GND
24VS
24VS
MP_EMPTY
24VS
LED_READY
THV_READ
LED_ERROR
THV_PWM
THV_EN
BIAS_PWM
MHV_PWM
LED_TONER SAVE
KEY_DEMO
FAN
FUSER
P_EXIT
1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
11