Model 9600/9700 Swing-Reach ® Lift Truck
Section 8. Theory of Operation Pinout Matrix
Pinout Matrix
Section 8. Theory of Operation
The pinout matrix table lists functions and normal voltages of terminals and harness connector pins. The matrix columns have the following meanings: •
Item #: sequential number to aid in reference.
•
Connection: the actual wire numbers or component abbreviations on the electrical schematic.
•
Function Description: brief definition of the voltage carried on the wire.
•
Theory of Operation:
•
Normal Level: the approximate voltage that you should see on that wire for the state indicated. Unless otherwise indicated, voltages are measured with respect to (wrt) B– at TP4.
•
Voltage Source: the device or connection that supplies the signal directly to the wire.
•
Voltage User: the device or connection that the wire directly delivers the signal to.
• A detailed description of the voltage carried on the wire. If the voltage is variable, it indicates the state of a related component that causes the voltage to vary. • Identifies possible causes for lack of correct voltage. Table 8-1.
Pinout Matrix Function Description
Item
Connection
Theory of Operations
1
JPC2-1
VBUS
Used to communicate with USB type connection via FlashWare.
2
JPC2-2
D+
Positive Data Bus used for USB type connection via FlashWare.
3
JPC2-3
D–
Negative Data Bus used for USB type connection via FlashWare.
4
JPC4-1
+5V_POT
+5V for the Traverse Pot (VR4). This voltage is generated by a power supply on the CM. It is also jumpered in the Control Handle harness to supply the Rotate Pot (VR3).
5
JPC4-2
DGND
B– for the Lift Select switch (S6), Lift/Lower Inhibit Bypass switch (S7), Rotate Pot (VR3) and Traverse/Reach Pot (VR4).
Publication: 1089040, Issued: 08 Apr 2016
Normal Level
Voltage Source
Voltage User
CM
FlashWare
CM
FlashWare
CM
FlashWare
4.75 to 5.25V
CM
VR3, VR4
Measure battery voltage to TP1 (B+) to verify connections. Then check for <0.3V wrt TP4.
CM
S6, S7, VR3, VR4
No useful voltages are measurable
8-15
