Modern payment terminals such as Pax S90, are complex devices that require a stable connection to bank processing to conduct transactions. The transition to wireless technology Wi-Fi This eliminates the need for bulky Ethernet cables and allows you to place your point of sale anywhere with network coverage. This is especially relevant for courier services, mobile retailers, and restaurants where the bill must be brought to the customer's table.
However, the initial configuration process often presents difficulties for users unfamiliar with the Android architecture underlying these devices. Entering an incorrect password or selecting the wrong security protocol can result in an authorization error. In this article, we'll detail a step-by-step process that will help you quickly establish a connection and start accepting card payments.
Before setting up, make sure you're in an area with a strong router signal. A weak signal can cause connection interruptions during crucial payment moments. Also, check that your router is broadcasting in the 2.4 GHz band, as many terminal models don't support the 5 GHz frequency.
Equipment preparation and compatibility testing
The first step is to physically check the device and its current status. Terminal Pax S90 The device must be charged to at least 30% to prevent it from shutting down during the system setup process. If the device is new or has been reset to factory settings, it will take some time for the modules to initialize.
It's important to make sure your access point is working properly. Try connecting to the same network. Wi-Fi smartphone or laptop. This will eliminate issues with the router itself, such as MAC address blocking or client list overflow. Corporate networks often have additional filters that can prevent unauthorized devices from connecting.
Pay attention to the encryption type. Payment systems usually require a protocol to operate reliably. WPA2-PSK or WPA3Legacy encryption methods such as WEP may not be supported by current terminal firmware versions due to PCI DSS security concerns.
⚠️ Note: If you are using a corporate network with login and password authentication (802.1x), the standard connection procedure may not work without the intervention of a system administrator.
Entering the terminal settings menu
Terminal control interface Pax S90 It's based on the Android operating system, so the navigation logic is similar to smartphones. First, unlock your device if you have a PIN code set, and go to the home screen. You'll need to find the icon Settings (Settings), which usually looks like a gear.
In some configurations, access to system settings may be hidden or limited to cashier access rights. If you don't see the familiar icons, try clicking the app icon. PaxStore or Menu in the bottom corner of the screen. Sometimes you need to enter the administrator password, which is often set to 0000, 1234 or 000000.
Once you enter the menu, find the section responsible for network connections. It may be called Network, Wireless & Networks or simply Wi-FiThis is where the device's wireless modules are controlled.
What to do if the settings menu is locked?
If you can't access settings, the terminal may be in Kiosk mode. Try quickly tapping the Android version five times in the "About phone" section or contact your acquiring provider to unlock access.
Searching and selecting a wireless network
In the Wi-Fi settings window that opens, you first need to activate the module itself. Move the switch to the "On" position. ON (On). The device will begin scanning the surrounding area and after a few seconds will display a list of available networks.
Find your network name in the list (SSID). If the network is hidden, it will not be displayed in the general list, and you will need to select the option Add Network (Add Network) to manually enter a name. When selecting a network, note the lock icon next to the name—this indicates password protection.
Sometimes you can see several networks with similar names in the list, for example, MyShop And MyShop_5G. As mentioned earlier, for the terminal Pax S90 It is preferable to choose a network with a frequency of 2.4 GHz, as it has better penetration and compatibility.
Entering your password and security settings
After selecting the network, a dialog box will open for entering the security key. Please note: the system is case-sensitive, so Caps Lock can play a nasty trick. Use the virtual keyboard, entering characters carefully.
To make entering complex passwords easier, you can use the character display feature (the little eye in the corner of the keyboard). This will allow you to visually verify the correct combination before sending data to the router. Even a single character error will result in connection denial.
In the advanced settings (usually accessible via the "Advanced" button or the gear icon), you can change the IP parameters. The default value is DHCP, which means the address is obtained automatically. Changing to a static IP address is only necessary if required by your IT infrastructure.
☑️ Check before connection
Troubleshooting connection issues
Even with the correct settings, situations may arise when the terminal Pax S90 Can't connect to the router. A common cause is incompatible Wi-Fi channels. Some routers operate on channels 12 and 13, which are not supported by devices certified for the US market.
Another common problem is an overcrowded client list on the router. If your access point has the maximum number of devices connected simultaneously (usually 10-32 for home routers), there simply won't be enough addresses for a new device. In this case, you need to disconnect unnecessary devices.
It's also worth checking the date and time settings on the terminal. If the time is significantly different from the actual time, the security certificates may be invalid, and the connection to the bank will fail, even if Wi-Fi is officially connected.
| Problem | Possible cause | Solution method |
|---|---|---|
| Authentication Error | Incorrect password | Delete the network and re-enter the password |
| Obtaining IP Address... | DHCP router error | Reboot your router or set a static IP |
| Network not found | Hidden SSID or Range | Add a network manually or move closer |
| Connected, no internet | Problems with the provider | Check other devices on the network |
Checking the connection and test transaction
When the connection status changed to Connected (Connected) doesn't guarantee the payment app is working. Make sure the terminal has internet access. In the Wi-Fi menu, under your network name, you'll usually see "Connected" or the signal strength displayed.
Launch the main application for accepting payments (for example, SberPay, Tinkoff Kassa or PaxStore). The app can run its own network diagnostics upon startup. If it reports a connection error, check if the app requires an update.
For a final check, we recommend conducting a test transaction for a minimum amount or completing the shift closing procedure, which always requires a connection to the server. A successful data exchange will confirm that all settings are correct.
⚠️ Please note: Banking app interfaces and terminal firmware versions are subject to update. Button locations and menu item names may differ from those described in the instructions.
Optimizing stability
For retail outlets where the terminal Pax S90 If the radio is running continuously, it is recommended to mount the device in a strong reception area. Metal shelves, microwave ovens, and aquariums can cause significant interference with the radio signal.
If there are many neighboring Wi-Fi networks in the same room, interference may occur. You can try changing the broadcast channel in your router settings to a less congested one (channels 1, 6, or 11 are optimal). This will improve connection stability during peak hours.
Check regularly for system updates in the menu Settings → About Device → System UpdateManufacturers frequently release patches that improve Wi-Fi module performance and fix security vulnerabilities.
Is it possible to connect the Pax S90 terminal to a hidden network?
Yes, this is possible. In the Wi-Fi menu, select "Add Network." You'll need to manually enter the exact network name (SSID), select the security type (usually WPA/WPA2), and enter the password. The network won't appear in the general list, but the connection will still work.
What should I do if the terminal says "Saved" but won't connect?
This means the password has been accepted by the router, but the device cannot obtain an IP address. Try rebooting the router. If the issue persists, change the IP settings in the Wi-Fi settings on the terminal from DHCP to Static and manually enter the address, after consulting with the network administrator.
Does battery power affect Wi-Fi performance?
Yes, when the battery level is low (less than 10-15%), some terminal models may forcibly disable the Wi-Fi module to save power or reduce the transmitter power, leading to connection interruptions. It is recommended to keep the device charged during intensive use.
Do I need to reconfigure Wi-Fi after updating firmware?
In most cases, network settings are retained after an update. However, if the update was a major one (changing the Android version) or a factory reset, you will need to re-enter your Wi-Fi password.