Urgent Ma intenance:
1. When the e xterior reader c an not read the card s, please
test the vo ltage of DATA0—GND and DATA1---GND. If the
voltage i s less than 3.5V, please we ld TVS2, TVS3.
2. When doo r magnet input fai ls, please test th e voltage
between M enci and GND. If the v oltage is less tha n 3.5V,
please we ld TVS5.
3. When exi t button input fai ls, please test th e voltage between
SW and GND. I f the voltage is les s than 3.5V, pl ease weld
TVS4.
PCB
Common Question
1. If there i s no sound when card i s presented to the r eading area, the r eading function maybe damaged.
2. If there i s no sound when pres s the keys, the keyp ad maybe damaged .
3. When add c ard, if the device e xits program mod e automaticall y, the memory maybe damaged.
4. If valid c ard is read and OK lig ht is on, while rela y does not act, the lo ck control may malfunction.
5. If relay k eeps on in open stat e, buzzer keeps bu zzing, and SW- GND is short or lowe r than , the
keys mayb e damaged.
6. MenCi- GND is short or lowe r than 3.5V, the door magnet inpu t maybe damaged.
7. Voltage o f DATA0 , DATA1 and GND sh ould be higher tha n 3.5V, otherwise exte rior reader can no t work
properl y.
8. When RS4 85 is applied, vol tage between 485 + and 485- is around 5 v oltages.
9. The LC D have no informat ion to be displaye d, after turn on the p ower for AC-930P. The start ing
program m aybe damaged.
The life of p roducts is relat ed to applicatio n environment an d application me thod. Please carefully follow
the produ ct manual and inst allation manua l.
In case of an y problem, pleas e contact with our t echnical suppo rt instead of self -repairment.
Please ke ep the original st ate of the product s when sending bac k for repair. Plea se notify us if you
have any sp ecial demand, an d we will feedback w ithin 48 hours.
3.5V
Product
Maintenance
Product
Maintenance
AC-930PAC-930P
Home & Busi ness Security So lution
CCT V & Secur ity Dis tri buto r