Parking lot management system common failure maintenance method

With the improvement of people’s living standards, there are more and more private vehicles, and parking management is becoming more and more complex and constantly improving. After the car park system has been used for a long time, there will be a series of minor problems. The methods of repairing some car parking system breakdowns below are hopefully helpful to you.

The parking lot management system is mainly composed of a wheel positioner (installed behind a parking space to protect against accidental collision and collision of the reverse parking device) and a bumper bar (installed on the pillars of a parking lot, corners, and walls to prevent Vehicle collision cylinder, wall), deceleration belt (installed in the entrance, downhill and other places, the color is black and white alternately, with reflective body at the bottom, at night to play a reflective role to remind the driver to slow down), wide-angle lens (installed in the sharp turn , dead ends, corners, to provide everyone with vision, to prevent the occurrence of traffic accidents), signs (stand at the exit or entrance, is to give you the correct direction of instructions), ballot box (also known as lane control machine, is The key equipment of the yard management system is generally composed of the parking lot management system or the management equipment of the card and gate in the ticketing system, and the gate (the equipment that manages the entrance and exit of vehicles).

Here are some common problems with the parking management system and the solutions:

Power on, air switch turns on the motherboard and Chinese display without any display

Parking system fault repair method:

Check whether the switching power supply has a corresponding power output, and whether the switching power supply is connected to the connection between the main board and the display control board.

Check whether the power input socket is plugged into position and whether the connection screw is tightened

The power input is normal, the G-F900 motherboard power indicator does not show or the operation indicator does not blink

Parking system fault repair method:

12V voltage detection: adjust the multimeter to the DC voltage measurement file, connect it to the GND on the motherboard with a black test lead (the same applies below), and connect the 4 feet of the 2575 (pin 4 of U1) with the red probe. The multimeter's voltage reading should be 12V

5.0V voltage detection: connect the red pin to U2's pin 4 and the multimeter's voltage reading should be 5.0V

3.3V voltage detection: Connect the red pin to U2's pin 2 and the multimeter's voltage reading should be 3.3V

1.8V voltage detection: Connect the red pin to the second pin of U4, and the voltage reading of the multimeter should be 1.8V

Power input is normal, Chinese display is not displayed

Parking system fault repair method:

Check if the display control board TVS4 (36V/500W) transient suppressor is damaged

5V voltage detection (G-81): Connect the red pin to pin 4 of the 2575 (pin 4 of U8). The voltage reading of the multimeter should be 5.0V.

5V voltage detection (G-81): Connect the red pin to the 4th pin of the 2576 (pin 4 of U10). The multimeter voltage reading should be 5.0V.

3.3V voltage detection (G-81): Connect the red pin to the second pin of the 1117 (pin 2 of U3), and the voltage reading of the multimeter should be 3.3V

When the card is near the ticket reader reading the card, you can hear the sound of "嘀嘀" and the Chinese display shows "Invalid card"

Parking system fault repair method:

Cards held are invalid (not issued or unauthorized)

The card has been released and does not download its valid permissions to the motherboard

When the small ticket box is swiped, the sound and light prompts are normal and there is no opening signal output

Parking system fault repair method:

Check whether the optical box U26 (PC357) is damaged

Check the ballast board Q1 (9013) transistor is damaged

Check whether the TVS24 (18V/500W) Transient Suppressor on the Ballast Box is damaged

When the ticket box is swiped, the sound and light prompts are normal, there is a normally open gate signal output or the relay often jumps

Parking system fault repair method:

Check the ballast board Q1 (9013) transistor is damaged

Check if the main board relay K1 (HFD41-005-HS) ​​is damaged

Check if the motherboard U11 (M74HC573M1R) is damaged

Check whether the motherboard's PR10 (1K*4) is short-circuited or not.

Failed to communicate between the parking lot management software and the mainboard

Parking system fault repair method:

Check the computer serial port is damaged

Check whether the connection between the 485 card and the mainboard is firm and correct (whether the 485 card is good)

Check whether the serial port set in the software matches the actual serial port used

Check whether the baud rate set by the corresponding serial port in the software is 19200

Check the motherboard U6 (MAX487) IC is damaged

Check if the board address matches the address set by the software

The valid card is not properly read in the entrance ticket box. The voice prompt "please wait" shows the motherboard error code "16"

Parking system fault repair method:

The number of parking spaces in the parking lot is too small, resulting in a full parking lot

The yard server is not set up or the CAN line is not connected properly

LED Chinese display information download failed or display content does not match the system loading content

Parking system fault repair method:

Check whether the communication connection between the mainboard and the display control board is firm and correct. Check whether the main board U7 (MAX487) IC is damaged.

Check the display control board U7 (MAX487) IC is damaged

Check the display control board TVSI, TVS2, TVS3 (12V/500W) transient suppressor is damaged

LED Chinese display shows incomplete fonts, lack of highlights, Huaping, etc.

Parking system fault repair method:

Check if the display driver IC: 4953/74HC595/74HC138 is damaged Check whether the LED dot matrix module has been welded or damaged.

Check whether the socket connection between the display and the display control board is tight Check if the display control board U5, U6 (74HC4050) IC is damaged.