Repair
3A1602J
Control Board
Power Bootup Check
NOTE: There is one red LED (D11) on the board. Power
must be on to check. See F
IG
. 58 for location. Function
is:
•
Startup: 1 blink for 60 Hz, 2 blinks for 50 Hz.
•
Motor running: LED on.
•
Motor not running: LED off.
•
Status code (motor not running): LED blinks status
code
Control Board Replacement
NOTE: Check motor before replacing board. See Elec-
tric Motor, page 43.
1. See Before Beginning Repair, page 33. Relieve
pressure, page 23.
2. Insert pin through cart handle and lock with lanyard.
3. Carefully lay sprayer on it
ʼs
side on a level surface.
Rotate sprayer and rest upside down on cart han-
dle.
NOTE: Always use two people when lifting the sprayer
up on to a workbench.
4. Remove four screws (10) and control board cover
(61) to expose the control board (12).
5. Disconnect all cables and connectors from board.
6. Remove seven screws (13) and remove board.
7. Install new board in reverse order.
NOTE: Apply thermal compound between the square
steel piece on the back of the board and the main alumi-
num plate. Order Part No. 110009 Thermal Compound.
Table 3: Control Board Connectors
(see F
IG
. 58)
Board
Jack
Pin
Description
J1
n/a
Main power from breaker
J2
n/a
Function knob
J3
n/a
Transducer A
J4
n/a
Motor power (230 V units)
J7
1, 2
Motor thermal overload signal
J8
n/a
Transducer B
J9
n/a
Fan
J10
1, 2
Status Indicator
3, 4
Not used
5, 6
Cycle switch signal
7, 8
Jumpered
9, 10
Jumpered
J11
n/a
Motor power (120 V)
F
IG
. 57: Control Board Removal
10 (x4)
13 (x7)
61
12
ti17466a
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