Model 9600/9700 Swing-Reach ® Lift Truck
Section 6. Electrical Tests
Test A87 – Rot Pot [Rotate Command Pot (VR3)]
Analog Tests
Test A87 – Rot Pot [Rotate Command Pot (VR3)] The voltage the CM reads from the rotate command pot (VR3) is displayed. NOTE: Run Learn after you replace, repair, or adjust the rotate pot. Refer to Learn Controls on page 3-22. If code 8V is displayed during SelfTest, check the knob for excessive play. The knob should not have movement that allows it to go beyond the values listed while in the neutral position. Move the rotate pot from full clockwise through neutral to full counterclockwise, observing the Operator Display. The test is good if the value displayed is within these limits: Rotate Position
Voltage Displayed
Full Clockwise
>0.4
Neutral
2.25 to 2.75V
Full Counterclockwise
<4.4V
Voltage fluctuation indicates a bad cable or pot. If the voltage is outside these limits or does not change in a smooth, linear fashion, refer to Diagnosis and Repair.
Diagnosis and Repair Step
Action/ Meter Scale
(+) Lead
(–) Lead
Expected Results
Step Passed
Step Failed
1
Disconnect JPL1/DCV
JL1-9
JL1-13
>4V
Perform step 2
T/S wiring
2
Disconnect JPL1 and JPC12/Ohms
JL1-10
JC12-5
0 ohms
Perform step 3
T/S wiring
3
Disconnect JPC12 and JPC4. >4V should be displayed with A87 selected. If not, replace CM. If OK, connect a jumper (at the CM) between PC12-5 and PC4-2. The display should read <1V with A87 selected. If not, replace the CM. If the correct values are displayed, verify wiring to VR3. If OK, replace pot.
Publication: 1089040, Issued: 08 Apr 2016
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