User's Manual

Service
3A1164B 33
Replacing Barrier Board
1. Follow Before Servicing, page 30.
2. Unlock and open EasyKey door with its key.
3. Disconnect the cables and connectors from J1, J4,
and J5. F
IG. 16.
4. Using the security tool provided (Part No. 122239),
remove 2 screws (214k) and the cover (214b). See
F
IG. 15.
5. Noting their location, remove 5 screws (214g, 214h)
from the barrier board (214a). Do not remove the
screw noted in F
IG. 16. Remove board.
6. Apply thermal compound to the heatsink (Z) on the
back of the new barrier board (214a). F
IG. 16.
7. Install the new barrier board with the 5 screws
(214g, 214h).
8. Install the cover (214b) with 2 screws (214k), using
the security tool.
9. Connect cables to J1, J4, and J5.
10. Close and lock EasyKey door with key.
11. Turn on power at main circuit breaker.
12. Turn EasyKey power on to test operation.
Replacing Barrier Board Fuses
1. Follow Replacing Barrier Board, steps 1-4.
2. Remove the fuse (F1, F2, F3, or F4) from its fuse
holder. F
IG. 16.
3. Snap new fuse into holder.
4. Follow Replacing Barrier Board, steps 8-12.
NOTICE
To avoid damaging circuit board when servicing, wear
Part No. 112190 grounding strap on wrist and ground
appropriately.
Fuse Part No. Description
F1, F2 114788 Power In Fuses; 2 amp, time lag
F3, F4 15D979 Power Out Fuses; 0.4 amp, quick
acting
FIG. 15: Replacing Barrier Board
TI12649b
214c
214g 214a214k
214b
214h
214g
J1J4
J5