JLG 20VP (3120728) Service Manual - Manual (Page 68)

SECTION 3 - TROUBLESHOOTING
3-8 – JLG Lift – 3120728
Figure 3-3. VP Electrical Diagram. (VP Series - Standard)
ORN/RED 49-3
BLU/ORN 52-1
ORN/RED 49-1
ORANGE 55-9
ORANGE 55-8 YEL/RED 2-2
9 8 3 4 5 6 2 7
TAN 4-1
TAN 3-1
X102
X
104
X
103
X
105
X1
0
1
24
V
LO
G
IC
P
O
W
ER
EM
ERG
ENC
Y
S
TO
P
CA
N
-L
CA
N
-H
CE
N
TE
R
D
ETE
C
T
EM
ER
G
E
N
C
Y
ST
OP
S
W
IT
CH
0V
RED
/B
LK
BL
U
/BL
K
YE
L
OR
G
BL
U
RED BL
K
BR
N
TAN 55-1
BLU/ORN 52-2
YEL/RED 2-3
ORN/RED 49-5
ORN/RED 49-6
BLACK
WHITE
WHITE
BLACK
+
+
BLACK (10)
YEL/RED 2-5(10)
ORN/RED 49-7
BLU/ORN 52-3
MC-1
CONTROLLER
E-STOP SWITCH TO PIN 2
ON METAL BOX AND TO
PIN 1 ON PLASTIC BOX.
JOYSTICK
BOX
RIGHT
MOTOR
LEFT
MOTOR
LEFT
BRAKE
RIGHT
BRAKE
15 8 7 13 5 6 14 1
ORANGE 55-4
ORANGE 55-5
1
PIN 1 ON METAL JOYSTICK
PIN 2 ON PLASTIC JOYSTICK
4932960 A
A2
A1
A2
15
4
4
4
4
2
2
2
11
1
1
1
6
5
55
5
3
33
3
A1
A2
A1
14
12
X102 X103
X105 X101 X104
END VIEW OF MC-1 BOX
SHOWING X CONNECTOR LOCATION
ORANGE 55-7(10)
ORANGE 55-10(10)
ORANGE 55-3 (10)
ORANGE 55-6 (10)
X101
B+
B+ CONTROL
MAIN POWER DISCONNECT
ELEVATION SWITCH
TILT CUTOUT
CHARGER INTERLOCK
B– PIN
A1
3
5
1
2
4
A2
X102
B+
EMERGENCY STOP
CAN-LO
CAN-HI
CENTER DETECT
B–
EMERGENCY STOP PIN
15
14
13
5
6
1
7
X103 – LEFT MOTOR
MOTOR 1
MOTOR 2
BRAKE 1
BRAKE2 PIN
A1
A2
5
3
X104 – RIGHT MOTOR
MOTOR 1
MOTOR 2
BRAKE 1
BRAKE 2 PIN
A1
A2
5
2
X105
RX DO - RECEIVE DATA
TX DO - TRANSMIT DATA
GROUND
LIFT UP
LIFT DOWN
PUMP CONTACTOR
DRIVE CUTOUT
BRAKE STATUS
HORN
ALARMS
HOURMETER PIN
7
8
13
4
6
5
12
11
15
14
3
PINS USED FOR
COMMUNICATION
TO SERIAL PORT
ON LAPTOP OR PC.