Grizzly G0894 Owner's Manual page 38

Symptom Possible Cause
One or more axes 1. Circuit board and motor connection loose.
only move in one 2. Incorrect machine parameters.
direction. 3. Circuit board at fault.
4. Stepper motor at fault.
One or more axes 1. Direction wire and pulse wire in wrong
will not move. place on circuit board.
2. Stepper motor disconnected.
3. Stepper motor at fault.
4. No pulse signal output from circuit board.
Controller screen is 1. Power supply disconnected or damaged.
dim. 2. Power supply voltage too high for
controller.
3. 50-pin cable at fault.
4. Display at fault.
Controller screen 1. Faulty controller connection.
is blank, flickers, or
restarts. 2. Incorrect power supply voltage or circuit
size.
3. Display or controller at fault.
Controller screen 1. Wrong connections at circuit board.
says spindle is ON
when spindle is OFF
and spindle is OFF
when spindle is ON.
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Possible Solution
1. Inspect connections and ensure all are tight.
2. Verify machine parameters (Page 22).
3. Inspect/clean plugs and sockets and retry. Replace
if bad.
4. Inspect/clean plugs and sockets and retry. Replace
if bad.
1. Rewire.
2. Reconnect.
3. Inspect/repair/replace.
4. Replace circuit board.
1. Inspect/replace power supply from circuit board.
2. Use correct power supply. High voltage may
damage controller; replace if needed.
3. Inspect/clean plugs and sockets and retry. Replace
if bad.
4. Replace controller.
1. Inspect/clean plugs and sockets and retry. Replace
if bad.
2. Ensure correct power supply voltage and circuit
size.
3. Replace controller.
1. Rewire.
Model G0894 (Mfd. Since 05/19)