Jacobsen Eclipse 322, Repair Manual

Page: 147 / 336

ELECTRICAL
4222983 Second Edition 4-73
4
Troubleshooting
IMPORTANT
Before performing any component or wiring tests, ensure
components are dry. The presence of moisture can
adversely affect electrical system performance.
LCD Display Maintenance Mode
See Figure 4-49.
When placed in maintenance mode, the LCD display
provides monitoring and testing of the machine
components. Also when in maintenance mode, the LCD
provides machine configuration displays. Consult the
“Safety and Operations Manual” or “Parts and
Maintenance Manual” for information on machine
configuration.
Figure 4-49
There are three buttons used to operate the LCD display.
The two orange buttons (1 and 3) are used to change
display screens or to change values. The right orange
button (3) moves the LCD display forward through the
LCD display menu and is also used to increase a setting
value. The left orange button (1) moves the LCD display
backward through the LCD display menu and is also
used to decrease a setting value. The black button (2) is
used to enter, reset, or change values.
To place the LCD display into maintenance mode, press
either orange button (1 or 3) until “ENTER PIN?” is
displayed and press the black button (2). When a zero
appears, press the black button (2) another three times
until “0000” is displayed. Press the black button (2) to
enter the 4-digit PIN to enter maintenance mode.
Change/Retrieve Maintenance Mode PIN
When servicing a machine that contains an unknown
maintenance mode PIN, or the PIN was forgotten, use
the following procedure to retrieve the unknown/forgotten
PIN.
1. Navigate to “ENTER PIN” on the LCD, press the
black button to enter.
2. Enter 2718 and press the black button to accept.
3. The “Current PIN” which is saved in the LCD will now
be displayed.
4. The “Current PIN” can now be changed or accepted
as is, at which time maintenance mode is activated.
System Voltage
See Figure 4-50.
Figure 4-50
Cycle through the LCD menu until the system voltage
screen is displayed. The system voltage is displayed as a
3 digit voltage measurement.
Normal operating voltage is in the range of 43.0–60.5
volts.
If the system voltage goes above 60.5 volts for more than
5 seconds, the following will occur:
• The LCD sounds the alarm and turns on the fault
LED.
• Engine operation is disabled.
• Mow operation is disabled.
• Transport speed is limited to 3 mph (4.8 km/h).
• Diagnostic fault code “48 VOLT SYSTEM HIGH” is
displayed.
If the system voltage goes below 43 volts for more than
10 seconds, the following will occur:
• The LCD sounds the alarm and turns on the fault
LED.
• Mow operation is disabled.
• Transport speed is limited to 4 mph (6.4 km/h).
• Diagnostic fault code “48 VOLT SYSTEM LOW” is
displayed. (See “DTC: 48 Volt System Low” on
page 4-95.) (See “DTC: 48 Volt System High” on
page 4-95.)
1 Left Orange Button 3 Right Orange Button
2 Black Button
!
48 V
12 V
JACOBSEN
VERSION X.XX
TN2768
3 2 1
SYSTEM VOLTS
48.0 VDC
TN2771