ADT FOCUS 200 PLUS Installation And Setup Manual page 107

Symptom
Red LED on Marlok
Keylok or Keyreader stays
bright red with key
removed.
Construction card
(Wiegand mag stripe or
proximity) does not work
(green LED does not light).
Marlok construction key
does not cause green LED
to light.
Marlok Construction key
causes LED on Keylok to
turn yellow.
Probable Cause
1 Dirt in reader keyway.
2 Broken data line ("1" or
"0").
3 Top surface of reader is
shorted to metal portion of
lock.
4 Bad or damaged reader.
1 ACIU is communicating
with control unit.
2 Incorrect wiring between
ACIU and reader.
3 Improper card orientation
or card swiping.
4 Bad or defective
construction card.
5 Bad or damaged reader.
1 ACIU is communicating
with control unit.
2 Incorrect wiring between
ACIU and Keylok or
Keyreader.
3 Improper key insertion.
4 Bad or defective
construction key.
5 Dirt in reader is partially
blocking light path.
6 ACIU battery missing or
low.
7 Bad or defective ACIU.
8 Bad or defective Keylok or
Keyreader.
1 Green LED is receiving too
much current because
Jumper E11 on ACIU is
IN.
2 Green LED is receiving too
much current because 330-
ohm resistor is not
installed.
Section 10 – Access Control
Corrective Action
1 Clean using cleaning swab. Refer to vendor literature
for details.
2 Check wiring connections and correct or make repairs,
as required.
3 Check and insulate top surface of lock, if shorted.
4 Replace Keylok or Keyreader.
1 Construction card only works when ACIU is NOT
communicating with control unit. Either turn of control
unit or disconnect yellow and blue RS-485 bus wires
from TB1-3 and TB1-4.
2 Check wiring to TB2-5 for opens, shorts, and grounds.
Insulate all unused wires.
3 When swiping, card must be properly seated in slot,
and swiped straight through in the direction of the
arrows without lifting or twisting. The ADT logo should
face you, and the edge marked "This edge up" should be
up.
4 Card should not be cracked. A mag stripe card can be
damaged internally if it is subjected to a strong
magnetic field. Try a known good construction card.
5 Disconnect wire from TB2-5 and momentarily connect
it to TB2-1. If green LED does not light, replace reader.
1 Construction key works only when ACIU is NOT
communicating with control unit. Either turn off
control unit or disconnect yellow and blue RS-485 bus
wires from TB1-3 and TB1-4.
2 Disconnect wire from TB2-5 and momentarily connect
it to TB2-1. If green LED does not light, replace reader.
3 Marlok keys are read from the key tip to shank, but
only on insertion. Key must be inserted in a continuous
"fluid" motion without stopping, hesitating, or
reversing direction. If key is not read, remove and
reinsert. (The key may be inserted upside down with no
difference in reading.)
4 Key should not be cracked, bent, scratched, or dirty.
Try a known good construction key.
5 Clean reader keyhole using Marlok cleaning swab.
6 Install a fully charged battery. Make sure Jumper E11
is out.
7 With all wires disconnected from TB3, check for 12VDC
across TB3-2 (+) and TB3-1 (-) for 10 seconds after
inserting construction key. If voltage is incorrect,
replace ACIU.
8 Momentarily connect yellow wire to TB2-2 (5V). If LED
does not turn green, replace Keylok or Keyreader.
1 Remove Jumper E11.
2 Install 330-ohm, +/- 5%, 1-watt resistor in series with
yellow wire to TB3-2.
10-21