Urgent Maintenance
：
1. When
the
exterior
reader
can
not
read
the
cards
,
please
test
the
voltage
of
DATA0
—
GND and DATA1---GND. If the
voltage is less than 3.5V, please weld TVS2, TVS3.
2. When
door
magnet
input
fails
,
please
test
the
voltage
between
Menci
and
GND
.
If the voltage is less than 3.5V,
please weld TVS5.
3. When exit button input fails, please test the voltage between
SW and GND. If the voltage is less than 3.5V, please weld
TVS4.
P C B
Common Question
1. If there is no sound when card is presented to the reading area, the reading function maybe damaged.
2. If there is no sound when press the keys, the keypad maybe damaged
.
3. When add card, if the device exits
program
mode
automatically
,
the
memory
maybe
damaged
.
4. If valid card is read and OK light is on, while relay does not act, the lock control may malfunction.
5. If relay keeps on in open state
,
buzzer keeps buzzing
,
and SW-GND is short or lower
than
,
the
keys
maybe
damaged
.
6. MenCi-GND is short or lower than 3.5V, the door magnet input maybe damaged
.
7. Voltage of DATA0, DATA1 and GND should be higher than 3.5V, otherwise exterior reader can not work
properly.
8. When RS485 is applied, voltage between 485+ and 485- is around 5 voltages
.
9. The LCD have no information to be displayed, after turn on the power for AC-930P. The starting
program maybe damaged.
The life of products is related to application environment and application method. Please carefully follow
the product manual and installation manual.
In case of any problem
,
please
contact
with
our
technical
support
instead
of
self
-
repairment
.
Please
keep the original state
of
the
products
when
sending
back
for
repair
.
Please
notify
us if you
have any special demand, and we will feedback within 48 hours.
3.5V
Home & Business Security Solution
CCTV & Security Distributor
