Service manual

Troubleshooting
V Series Service Manual 3–9
For readers with a
dual red/green LED
and sounder
This table summarizes the possible causes for certain controller
problems based on visible and audible signals (LEDs, sounder, and
whether access is granted or denied). The causes of failure are listed in
the order of likelihood. (The most likely cause is first, and so forth.)
LEDs Sounder Access Possible causes include… You should…
Green Granted Condition is normal for a valid
token.
1 long
tone
Denied Token reader cannot read the
token correctly.
Use the token at a moderate speed.
Green/
red
flashing
2 short
tones
Denied a. Token number is invalid. a. Check the access privileges.
b. Time zone is invalid. b. Check the access privileges.
c. Card is damaged. c. Re-encode the operating card. It may be
possible to re-encode a damaged card. If not,
issue a new operating card.
d. Controller has not been
programmed.
d. Program the controller.
e. Facility code is invalid. e. Program the correct facility code in the
controller.
f. Token has expired. f. Re-encode the token with a valid expiration
date.
Green/
red
flashing
2 short
tones
Denied Controller may be in a lock down
mode.
Use the handheld terminal to check the door
mode. If desired, set the door mode to TZ
Control.
Denied a. Card reader needs cleaning. a. Clean the card reader head using a cleaning
card for magnetic stripe card readers.
b. Card or keypad reader has
failed.
b. Replace the card or keypad reader.
c. Card is damaged. c. Try other cards in the reader. If another card
accesses the controller, the problem involves
the card. Replace the card reader if other
cards do not access the controller.
Green
remains
on
Denied a. Communication token was
used.
a. Wait 1 minute for the lock communications
to automatically expire, or use any token
again to turn off communications.
b. Micro-controller circuit board
switches are in the ON
position.
b. Set the switches to the OFF position.
Green/
red
flashing
Denied Sounder is damaged. Replace the card reader or keypad reader.
Denied LEDs are damaged. Replace the card reader or keypad reader.