Service Manual

Groundsmaster 7200/7210Page 5 - 18Electrical System
Standard Control Module
Groundsmaster 7200/7210 machines are equipped with
a Standard Control Module (SCM) to monitor and con-
trol electrical components required for safe operation.
The SCM is attached to the control panel cover (Fig. 2 0).
Inputs from the ignition, neutral, parking brake, PTO,
seat, high temperature warning switch and high temper-
ature shutdown switch are monitored by the SCM. Cur-
rent output to the PTO, engine starter motor and engine
run components (fuel pump and engine run solenoid)
are controlled based on the inputs monitored by the
SCM.
The SCM can be used to check operation of machine
switches by monitoring the SCM LEDs. If a SCM LED
does not illuminate (e.g. the In Seat input LED does not
illuminate when the seat is occupied and the ignition
switch is in the ON position), testing of the switch, fuses
and circuit wiring would be required.
The SCM does not connect to an external computer or
hand held device, can not be re- programmed and does
not record intermittent fault data.
SCM Inputs (Fig. 21)
The Power input LED should be illuminated when the
ignition key switch is in the ON position. The Power input
LED should also be illuminated when the ignition k ey
switch is in the START position.
The Start input LED should be illuminated when the igni-
tion key switch is in the START p osition.
The Neutral input LED should be illuminated when both
traction control levers are in the neutral locked position.
The Parking Brake Off input LED should be illuminated
when the parking brake is not applied.
The PTO Switch input LED should be illuminated when
the PTO switch is on (pulled out).
The In Seat input LED should be illuminated when the
operator is sitting in the seat.
The High Temperature Shutdown input LED should be
illuminated when the enginehightemperatureshut-
down switch closes due to engine coolant temperature
of 240
o
F(115
o
C) (approximate).
The High Temperature Warning input LED should be il-
luminated when the engine high temperature warning
switch closes due to engine coolant temperature of
220
o
F(105
o
C) (approximate).
The Backlap input LED is not used on the Groundsmas-
ter 7200/7210.
SCM Outputs (Fig. 21)
The Start output LED should be illuminated when the
ignition key switch is in the START position with the trac-
tion control levers both in the neutral locked position,
the PTO switch OFF and either the seat occupied or
parking brake engaged.
The Run output LED should be illuminated when the
ignition key switch is in the ON position and inputs from
the neutral, parking brake, PTO, seat and engine cool-
ant temperature switches indicate safe engine opera-
tion (e.g. seat occupied and parking brake disengaged
when traction control levers are moved from the neutral
locked position).
The PTO output LED should be illuminated when the
ignition key switch is in the ON position and the PTO
switch is ON (pulled out). Note: If the SCM High Temper-
ature Warning input LED is illuminated, PTO output LED
will not be illuminated and PTO will be disengaged re-
gardless of PTO switch position.
1. Control panel cover 2. Latch
Figure 20
2
1
N
1. Power input LED
2. Start input LED
3. Engine run output LED
4. Start output LED
5. PTO output LED
6. Neutral input LED
7. Park brake off input LED
8. PTO switch input LED
9. In seat input LED
10. Temp shutdn input LED
11. Temp warning input LED
12. Backlap input LED
Figure 21
2
3
4
1
7
5
6
8
10
9
11
12