Troubleshooting - Graco XM Series Repair Parts

Troubleshooting

To avoid injury due to unexpected machine operation
initiated by a remote controller, disconnect the
customer I/O cable from the system prior to
troubleshooting.
Problem
Display not lit on system with
alternator power supply.
No electric power.
Display not lit on system with
alternator power. Green light is
present on FCM (218) and USB (219),
but no green light is present on back
of display module (204).
Display not lit on system with wall
power supply. No green light present
on back of display module (204).
Display not lit on system with wall
power supply. Green light is present
on back of display module (204).
313289V
NOTE: The sprayer operates using air pressure. Many
problems are caused by inadequate air supply. The inlet
air pressure gauge cannot drop below 50 psi (0.35 MPa,
3.5 bar) while running.
NOTE: If an error code displays, see manual XM
sprayer operation manual.
Cause
Air valve not turned on.
Air supply pressure too low.
Air supply filters plugged. Inlet
manifold filter (604) or air regulator
(344) filter plugged.
Turbine air regulator (277) set too low. Adjust to 18 +/- 1 psi (12.6 +/- 10 kPa, 1.26 +/-
Alternator turbine failure.
Power supply not connected to main
board.
Display board failure.
Faulty CAN cable (268). Or CAN cable
is disconnected.
Faulty display module.
No electric power. Disconnect "off" or
breaker "open."
No green lights present on display,
FCM, or USB module.
No display power through CAN cable
(266). Green light in present on FCM
(218), but is not present on USB
module (219).
Green light is present on USB module
(219).
Display module failed.
Solution
Turn on main air valve to system.
Increase pressure to 30 psi (0.21 MPa, 2.1 bar)
or greater.
Clean filter bowls; replace filter elements. Page
21.
0.07 bar).
Repair or replace turbine. Page 28.
Check power connections to main board. See
Electrical Schematics, starting on page 37.
Replace display board. Page 25.
Check cable and replace. See Alternator
Assembly, page 62.
Replace display module. See User Interface/
Control Box, page 22.
Reset main disconnect and breaker.
Check for 24 Vdc on J1, pins 2 and 3, of power
supply. See Electrical Schematics, starting on
page 37. If there is not 24 Vdc, replace with
15V747.
Check CAN cable. Replace if necessary. See
Wall Power Supply Assembly, page 63.
Check CAN cable (274). Replace if necessary.
See Wall Power Supply Assembly, page 63.
Replace display module. See User
Interface/Control Box, page 22.
Troubleshooting
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