Oldham DL9, Instruction Manual And User Handbook

Page: 5 / 11

5
 Replacing Cable
1. Remove the cable from the battery terminals.
2. Cut the cable tie around the cable under the
battery cover and pull the cable out from the
battery cover gland.
3. Unscrew the M3 socket head mushroom
screw from the headpiece cable lock.
4. Use a small screw driver to “flick” the cable
lock off the retaining boss. Take care not to
lose the o-ring under the boss as this is
required for reassembly.
5. Replace the mushroom head socket
screw. This is important to ensure the
circuit board support in the headpiece
does not become loose.
6. Hold the lens glass down while unscrewing
the bezel ring.
7. Remove the lens glass and reflector.
8. Unscrew the 2 off M3 slotted screws.
9. Remove the cable
10. To replace the cable reverse the above
procedure.
Note:- Always ensure that one screw is fixed
into the positive cable terminal or the cable
lock. This ensures the circuit board support
does fall out of position
 Replacing the reflector
1. Remove the bezel ring and lens.
2. Remove the reflector
3. Remove gasket around reflector.
4. Place the gasket around the new reflector.
The reflector is located by two projections
which fit either side of the main LED; the hole
in the reflector goes over the secondary LED.
The bezel ring should be screwed down
firmly while holding the glass down with your
thumb.
5. Reassemble the lens and bezel ring (see
“Reassembling the bezel ring”).
 Replacing the circuit board
The circuit board can be replaced in the event of
damage to the switch or electronic failure of the
board. This procedure should be carried out by a
person with experience of soldering on small
circuit boards.
1. Remove the cable as described above
2. De-solder the wire connections to the LED at
the circuit board.
3. Carefully bend the cables away from the
circuit board.
4. Use an open ended spanner M204942 to
remove the nut securing the switch. Remove
the washer and rubber backed sealing
washer.
5. Pull the old circuit board out from the front of
the main housing.
6. Put a 10mm spacer in the positive hole
before replacing the board.
7. Replace the circuit board, pull in the threaded
switch boss to ensure it is fully located in the
socket at the back of the headpiece housing.
8. Replace the sealing washer and nut, tighten
with the open ended spanner.
9. Re-solder the wires from the main LED.
10. Replace the cable and reassemble the
reflector, lens and bezel ring.