Troubleshooting - GE 240 Installation Manual

Troubleshooting

If the operation of a component is in doubt, substitute a known-good
component and retry the system. Always verify wiring against the
provided wiring before powering up the system.
Table 7: Error Conditions and Possible Solutions
Condition
None of the
LEDs are on.
The green LED is
always on. The
green LED indi-
cates that the
door strike is
open. It is con-
trolled by the
input on connec-
tor JP1 pin 7.
The door does
not open and the
green LED does
not light when an
ISO 15963 or
ISO 14443A card
is presented.
Present a known-good ISO 15963 or ISO 14443A
type card to the reader while listening for the
beeper. If the beeper sounds, the reader is faulty
and should be replaced. If the beeper does not
sound, check the following:
•
Power connections to the reader
• Reader supply voltage at connector JP1 pin 3
and that the ground connection JP1 pin 2 is
secure
Disconnect the wire on JP1 pin 7. If the green LED
stays on, the reader is faulty and should be
replaced. If the green LED goes off, then the prob-
lem is most likely not in the reader.
Reconnect the wire on JP1 pin 7 and measure the
voltage at JP1 pin 7. A low voltage (0 to 2 VDC)
lights the green LED. If the voltage is low, there
are two possibilities:
• A short to ground in the wiring between the
reader and microcontroller, or
• The host system may be energizing the door
strike
Verify that the door strike and the green LED are
wired correctly.
Verify that the access card has been entered and
that the reader has been properly configured in
the host system.
GE Contactless Smart Card Reader Model 24x
Possible Solutions
19