Diodes
Themainwiringharnesscontains sixdiodes.Diodes D2
and D3 are connected to the harness at separate loca-
tions. Diodes D1--A, D1--B, D1--C, and D1--D are con-
nected to the main harness by a small four position
circuit board located near the frontof the left side control
panel. The diodes are used for circuit protection from in-
ductive voltage spikes and for safety circuit logic.
DIODE
CIRCUIT
BOARD
PLUG-IN
DIODE
D1--D
D1--C
1/A
2/B
D1--A
D1--B
Diode D1--A
Allows the engine to start only with the Functional Con-
trol Lever in NEUTRAL (neutral sensor closed). Also, it
allows theenginetocontinuetorunwitheither theFunc-
tional Control Lever in NEUTRAL (Neutral Sensor
closed) or the operator sitting in the seat (Seat switch
closed).
Figure 25
DIODE CIRCUIT BOARD
D1--A
D1--B
D1--C
D1--D
Diode D1--B
Prevents a negative spike from damaging the Neutral
Sensor and Seat switch by allowing a ground path for
the Start Safety relay (K2) when it de--energizes.
Diode D1--C
Figure 26
Maintains current flow to the Joystick relay after the mo-
mentary Lower switch of the Joystick opens.
Type
Red (+)
Black (--)
Continuity
YES
NO
H
A
A
H
Diode D1--D
Prevents a negative spike from damaging the Mow and
Backlap switches by allowing a ground path for the mow
relay when it de--energizes.
G
B
YES
NO
B
G
Circuit
Board
F
C
YES
NO
Diode D2
C
F
ThisdiodepreventscurrentflowtosolenoidS4whenso-
lenoids S2 and S3 are energized through Raise relay
R5.
E
D
YES
NO
D
E
1/A
2/B
2/B
1/A
YES
NO
Diode D3
Plug-In
ThisdiodepreventscurrentflowtosolenoidS3whenso-
lenoidsS2andS4areenergizedthroughlowerrelayR6.
Testing
DIODE
CIRCUIT BOARD
The diodes can be individually tested using a digital
multimeter (ohms setting) and the table to the right.
Figure 27
Greensmaster 3150
Page 5 -- 17
Electrical System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Greensmaster 3150 |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(1 votes, average: 2 out of 2)
Lawn and Garden readers have rated Toro 03113SL Rev E Greensmaster 3150 Service Manual 2.0 out of 2.0 based on 1 product reviews. Safety switches not working