Graco LineLazer ES 1000 Operation - Repair - Parts page 29

Problem
Sprayer does not run at all
AND
Control board status light blinks 5
times repeatedly
3A4603C Operation, Repair, Parts
What to Check
Control is commanding motor to
run but motor shaft does not
rotate. Possibly locked rotor
condition, an open connection
exists between motor and
control, there is a problem with
motor or control board, or motor
amp draw is excessive.
How to check
1. Remove pump and try to run sprayer. If motor runs,
check for locked or frozen pump or drive train.
If sprayer does not run, continue to step 2.
2. Turn ON/OFF switch OFF and disconnect power to
sprayer by unplugging power cord and disconnect-
ing battery.
3. Disconnect motor connector(s) from control board
socket(s). Check that motor connector and control
board contacts are clean and secure. If contacts
are clean and secure, continue to step 4.
4. Set sprayer to OFF and spin motor fan 1/2 turn.
Restart sprayer. If sprayer runs replace control
board. If sprayer does not run, continue to step 5.
5. Perform Spin Test: Test at large 4-pin motor field
connector. Disconnect fluid pump from sprayer.
Test motor by placing a jumper across pins 1 & 2.
Rotate motor fan at about 2 revolutions per second. A
cogging resistance to motion should be felt at the
fan. The motor should be replaced if no resistance
is felt. Repeat for pin combinations 1 & 3 and 2 & 3.
Pin 4 (the green wire) is not used in this test. If all
spin test is positive, continue to step 6.
GRN BLU R BLK
STEP 1:
GRN BLU R BLK
STEP 2:
GRN BLU R BLK
STEP 3:
Troubleshooting
29