Toyota 7BPUE15 Service Manual page 362

Toyota Orderpicker Model
J PT6- 1
CHA
DGND
5V
J
PT6-4 CHB
NC
1
PT4- SPARE I N
PT4-3 DGND
PT4-5 SPARE
PT4-7
DGND
PT4-2 SPARE I N
00700-CL222-05, 1 5
Service Manual
This is a square wave generated
whenever there is movement of the Steer
Feedback Encoder. Voltage varies
between about 4Vdc and about OVdc as
the encoder shaft rotates. The frequency
varies directly with the speed of the Drive
Motor. The STM uses the quadrature
phase relationship between CH A
determine direction and speed.
B- to the steer feedback encoder.
Positive supply from the STM power
supply to the steer feedback encoder.
This is a square wave generated
whenever there is movement of the Steer
Feedback Encoder. Voltage varies
between approx 4Vdc and OVdc as the
encoder shaft rotates. The frequency
varies directly with the speed of the Drive
Motor. The STM uses the quadrature
phase relationship between CH A
determine direction and speed.
Not connected to any circuitry on the
STM.
4
Input from optional switch connection.
B-
for optional switch
IN
5 Input from optional switch connection
B- for optional switch
4
Input from optional switch connection
2005
March
9.
Section Theory of Operation
Voltage should Steer
vary between Feedback
1
Vdc Encoder
as encoder shaft
is rotated slowly.
B to
STM
4.5 to 5.5V STM
Voltage should Steer
vary between Feedback
Vdc Encoder
as encoder shaft
is rotated slowly.
B to
N
N A
Switch Switch
1
Closed: < Vdc
Open: 5Vdc
TP4
STM
Switch Switch
Closed: <
Open: 5Vdc
STM
Switch Switch
1
Closed: < Vdc
Open: 5Vdc
Pinout Matrix
STM
Steer
Feedback
Encoder
Steer
Feedback
Encoder
STM
N
A A
STM
Switch
STM
Switch
STM