FTS 371 USER MANUAL
Flash Technology, LLC
Revision 4 – 9/7/2021
32
SECTION 3 – MAINTENANCE INSTRUCTIONS
SAFETY
Warning!
Read the
now (Page 3). Disconnect primary power before opening enclosures.
Work safely, as follows:
1.
Remove rings and watches before opening the equipment.
2.
Shut off the equipment and wait one minute before proceeding.
3.
Remove the component or connect the test instruments.
4.
Replace the component.
5.
Turn on the power and test the system.
6.
Turn off the power and disconnect the test equipment.
MAINTENANCE
Keep the circuit boards free of accumulated dust. Brush and vacuum as necessary.
Note:
Do not use compressed
air to clean this equipment.
TROUBLESHOOTING
The most effective troubleshooting procedure begins with observing the behavior of the system. This often leads
directly to a faulty component or other abnormal condition.
(page 37) contains information to help locate the cause of a problem.
COMPONENT REMOVAL AND REPLACEMENT
Note the wiring connections and wire colors when you remove wires from their connections. Replace them exactly
as they were.
FTS 371 FTC CONTROLL ER
PCB1 (2151000 FTS 371 FTC AC) (2153000 FTS 371 FTC DC)
Remove: Unplug wire connectors at positions J1, J2, J3 and J4. Remove four Phillips-head screws located at the
corners of PCB1 along with the grounding conductor ring lug at lower left screw. Lift the board out of the
enclosure.
Replace: Reverse the removal procedure. Be sure to reconnect the Grounding conductor ring lug at lower left
screw. Be sure to make the switch settings and jumper locations on the newly installed PCB match the removed
PCB.
