Leds At I/O Board - Upright TM12 Service Manual

Section 3 - Troubleshooting
3-7 LED
S AT
G LED ON
REEN
The Green LED indicates that power is present at the board.
R LED ON
ED
The Red LED indicates a short in the system. To locate the problem;
1. Push both E-Stop switches to the OFF position.
2. Turn the Keyswitch to the OFF position, then to either Platform or Chassis.
3. Pull both E-Stop switches to the ON position.
• The Green LED should be ON.
• The Red LED should be OFF.
4. Perform all machine functions until the Red LED is ON. Determine which function activated the
Red LED and check all components that are active for that function.
107099-002 TM12 Work Platform
I/O B
OARD
Green LED
Red LED
Dip Switch
J5
Black
Grey
J2
1 2 3 4 1
8 7 6 5 12
Part
No.
Serial
No.
1 2 3 4 5 6
12 11 10 9 8 7
J4
Green

LEDs at I/O Board

Figure 3-5: I/O Board
J1
2 3 4 5 6
11 10 9 8 7
1 2 3 4
8 7 6 5
J3
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