Common Faults and Solutions of Self-service Restaurant: Touch, Paper jam, Payment, Network Troubleshooting-QUNMAO

Release date: 2026-10-27

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Common faults and solutions of self-service ordering machines: touch failure, paper jam, payment, black screen and network investigation

QUNMAO (Qunmao)We are the original manufacturer of self-service kiosk products in China. Each QUNMAO ordering terminal undergoes a 48-hour burn-in test before leaving the factory and is accompanied by an SN serial number and a test report. However, a pattern we observe in the after-sales records across our global stores is:Most of the on-site ordering machine failures come from power supply, network, peripherals and settings, rather than the whole machine itself.。

This troubleshooting manual comes from the handling experience of QUNMAO's first-line after-sales team, covering six types of faults: touch failure of the ordering machine, paper jam and printing, payment and order drop, black screen crash, network disconnection and update failure. Each category is clearly written according to the five steps of "phenomenon, quick judgment, processing steps, prevention and when to contact QUNMAO". Store managers and IT operation and maintenance can be directly compared and used.

QUNMAO ordering kiosk troubleshooting and after-sales service — Troubleshooting and after-sales service of QUNMAO self-service ordering machine

General principles of 1. troubleshooting: power first, network again, peripherals again, and final software

When there is a problem with the ordering machine, the most common mistake is to reinstall the system or replace the parts as soon as it comes up. QUNMAO after-sales team's troubleshooting sequence is only one sentence:From outside to inside, from simple to complex. If you are planning an order machine purchase, it is recommended to read QUNMAO'sSelf-service ordering machine hardware procurement guideThe hardware architecture, peripheral configuration and acceptance criteria are set at the selection stage.

Step 1: ElectricityWhether the power cord, socket and one-key switch are on, and whether the power supply is stable

Step 2: NetWhether the network cable, switch port, Wi-Fi signal, network segment and port are released

Step 3 · PeripheralsConnection and power supply of printer, code scanning, card reading and audio

Step 4: SoftwareOrdering application, system settings, versions and logs

Do three things before 1.1 investigation

Recording phenomenon and time:When it occurs, whether it is continuous or intermittent, and whether it is related to an operation.
Take photos or record videos:QUNMAO after-sales to determine remote problems, the video is much more accurate than the text description.
Write down the device SN:Each QUNMAO machine has a unique SN serial number, which can trace the production batch and factory test records.

1.2 Fault Phenomena Quick Look-up Table

Table 1 QUNMAO ordering machine fault phenomenon quick check table
Phenomenon	The most common causes	What to do first	Corresponding chapter
screen all black	Power, timing shutdown settings, video line or display negotiation is abnormal	Check the power and power on switch indicator lights, check the timing switch machine settings	Chapter Four
No response or offset to touch	Screen stain, grounding, touch USB connection, calibration missing	Clean screen, check touch connection and calibrate	Chapter Two
The receipt is not available	Out of paper, paper jam, data cable or port, low power supply	Check the paper roll and the paper outlet, and print the self-test page.	Chapter Three
The receipt is white or garbled	Thermal Head Dust, Paper Non-Compliance, Firmware or Code Change	Clean the thermal head and replace the compliant paper roll	Chapter Three
Code scanning failure or intermittent disconnection	Lens stains, QR code quality, insufficient USB power supply	Clean the lens, check the peripheral power supply	Chapter V
Payment successful but no order	Payment callback failure, network fluctuation	Check the network and process according to the software supplement process.	Chapter V
Display online but failed to upload order	network segment, port, firewall, clock	Confirm network segment and port release	Chapter Six
Automatic restart or crash	Power supply fluctuation, high temperature, peripheral power consumption exceeding limit	Check the power supply and ambient temperature, peripheral power supply	Chapter Four
exception after update	Application or system update failed, version mismatch	Rollback to the last stable version	Chapter Seven

2. ordering machine touch failure and offset: cleaning, grounding and calibration

The touch failure of the ordering machine is one of the most common repair problems in stores. QUNMAO food ordering machine adopts capacitive G G touch scheme, supports 20-point touch, can be operated by finger or stylus, touch accuracy ≤ 2mm, and has a life of 60 million touches,Driver-free. Drive-free means that when you encounter touch problems, "reloading the drive" is usually not the correct direction and should be checked in the following order. QUNMAOVertical self-service ordering machineAll use capacitive G G touch, support multi-language and third-party software installation.

Touch Failure/Touch Offset

Phenomenon: The click did not respond, the click position was inconsistent with the response position, some areas failed, and the multi-touch was abnormal.
Quick Judgment: Tap different areas of the screen with your finger. If only the oil-stained area fails, it is mostly a surface problem. If the whole screen drifts, it is mostly a calibration or grounding problem. If the whole machine has no touch, it is mostly a touch USB connection problem.
Processing steps: ① Turn off the device and wipe the screen with a soft lint-free cloth and an appropriate amount of cleaning fluid to prevent liquid from penetrating into the edges. ② Check and reinsert the touch USB connection. Recalibrate in Windows 10/11 touch settings. Check whether the equipment is reliably grounded and whether there is an inappropriate protective film on the surface of the screen. ⑤ Exclude the software to the touch occupation or full screen lock settings.
Prevention: Develop daily cleaning practices; point away from fumes and glare; do not paste non-standard protective films on the screen.
When to contact QUNMAO: According to the above steps still can not be restored, or the screen cracks, local long-term failure. Please provide the device SN, the phenomenon video and the troubleshooting steps that have been done.

The screen surface is 3mm tempered glass, which is resistant to wiping, but oil and water stains will still affect the touch sensitivity. It is recommended to increase the cleaning frequency at the point near the back kitchen.

3. ordering machine paper jam, paper shortage and printing failure (80mm thermal printer)

QUNMAO food ordering machine supports 80mm thermal printer, which is used to print the small ticket.Wall hanging and desktop self-service ordering machineAlso built-in 80mm thermal printing and scanning code, credit card payment module, can cover the counter and take-out window scene. Paper jam and non-ticketing of the ordering machine are the most intuitive types of faults in after-sales investigation.

Paper jam/no ticket/white receipt/random code

Phenomenon: There is no ticket at the paper outlet, the paper roll is stuck, the cutter does not move, the printing is white, the characters are garbled, and the two-dimensional code cannot be scanned.
Quick Judgment: Print the printer self-check page first: the self-check page is normal, and the problem is mostly in software or connection. The self-check page is also abnormal, and the problem is in the printer itself or the paper.
Processing steps: ① Check the direction and installation position of the paper roll, take out the jammed paper and clean the paper path. ② Confirm that the specifications and thickness of the paper roll are in compliance, and use qualified paper with thermal coating. ③ Clean the print head with a thermal head cleaning card. ④ Check the data cable and ports to ensure a stable power supply. ⑤ garbled code problem: check the character code and font settings of the ordering software, and lock the firmware and driver version if necessary. ⑥ QR code cannot be scanned: Check the QR code’s size and error correction level settings.
Prevention: Use qualified paper rolls; Clean the paper outlet and thermal head every week; Firmware, drivers and font versions are not updated at will after they are fixed.
When to contact QUNMAO: The cutter is damaged, the thermal head is damaged, or the self-test page continues to be abnormal, and the print module needs to be replaced.

QUNMAO after-sales notes: firmware and coding are common sources of garbled code

In QUNMAO's self-service terminal project, the garbled receipt is related to "default code change after firmware upgrade" many times. Multilingual stores need to pay special attention: before changing the printer firmware or ordering software, test the receipt output with multilingual proofs. QUNMAO ordering machine supports multi-language interface, and we will do multi-language receipt sample verification with customers during the joint debugging phase.

About "black label" paper: Whether to use black label paper and the corresponding positioning settings depend on the printer and paper model used, please check according to the equipment configuration.

Black screen, death and automatic restart of 4. self-service ordering machine

The black screen of the self-service ordering machine is not always the screen is broken. The black screen problem handled by QUNMAO's after-sales team can be divided into four categories according to the reasons: power supply problem, timing switch machine setting, video connection and display negotiation, and overall temperature and environment.

Black screen/death/automatic restart

Phenomenon: The screen is completely black, the picture is still, it restarts automatically repeatedly, and the ordering interface cannot be entered after starting up.
Quick Judgment: First, look at the indicator light and fan sound of the one-button power-on switch of the fuselage: there is an indicator light but the screen is black, mostly video or display problems; No response at all, mostly power supply problems; The black screen at a fixed time during business hours is mostly a regular shutdown setting.
Processing steps: Check the power cord and socket to confirm that the voltage is within the AC110-220V range. ② Check time switch machine settings, This is the most easily overlooked reason: the shutdown time or date setting is wrong, which will make the device black during business hours. ③ Check whether the video cable such as HDMI is loose or aging, and replace the cable if necessary. Check whether multiple peripherals take power from the same USB port at the same time, resulting in insufficient instantaneous power supply. ⑤ Check the environment: the equipment is used in the environment of 0 ℃-55 ℃, 10% RH-90 RH, high temperature, condensation and close to the heat source will cause the crash. ⑥ After restoring the system, check whether the checkpoint meal application is set to start automatically.
Prevention: Check the time switch machine settings according to business hours; Avoid the rear kitchen heat source and air outlet at the point; Budget the power consumption of peripherals and use USB Hub with independent power supply.
When to contact QUNMAO: Repeated automatic restart, abnormal body heating, peculiar smell or abnormal noise. Please immediately power off and contact QUNMAO.

QUNMAO ordering machine adopts metal cold-rolled steel plate body and is equipped with maintenance door lock. Open the maintenance door to check the power supply and main board. Daily maintenance does not require disassembly of the whole machine. Standby power consumption ≤ 1W, rated power varies with model (15.6 "desktop ≤ 45W, 21.5" wall mount ≤ 55W, other models ≤ 80W), and allowance shall be reserved for power distribution circuit.

Abnormal payment of 5. ordering machine: code scanning, card reading and order dropping

The failure of the payment link will directly affect the turnover. QUNMAO ordering machine supports bar code and two-dimensional code scanning, and reserved POS terminal holes;Vertical self-service ordering machine(QM-L2226DC, QM-L3226DC) specifications also include NFC card, other forms of card reading methods can be customized according to customer needs.

Code scanning failed/card reading did not respond/payment succeeded without order

Phenomenon: The code scanning gun cannot read, the card reader does not respond, the code scanning machine is intermittently disconnected, the customer has paid but the ordering machine has no order (drop order).
Quick Judgment: Scan code type: use another clear two-dimensional code test to judge whether it is a device problem or a two-dimensional code problem; Card reading type: confirm that the card type matches the card reading module; Order drop type: distinguish "payment succeeded but callback failed" and "payment unsuccessful".
Processing steps: ① Clean the scanning code lens, adjust the screen brightness, and confirm the contrast of the two-dimensional code. ② Check the connection between the scanner, the card reader and the host, and check whether the USB power supply is sufficient; When multiple peripherals share the USB port, it is recommended to use a Hub with an independent power supply. ③ Check the card reading module and software settings for card reading faults. ④ Order drop: The order status is based on the payment result, processed according to the order filling process of the ordering software, and checked the network.
Prevention: Make peripheral power consumption budget, software set up the automatic replenishment mechanism for payment callback failure, and simulate network fluctuations during joint debugging.
When to contact QUNMAO: When the software service provider and the payment service provider need to view the log together. QUNMAO supports software customization and docking with customer-owned systems, and can cooperate with terminal-side log troubleshooting.

QUNMAO ordering kiosk scanner and receipt printer maintenance — Daily Maintenance of the Code Scanning Module of the Dining Machine and the Small Ticket Printer

Disconnection of 6. ordering machine network: wired, wireless and disconnection response

QUNMAO restaurant machine supports Ethernet (RJ45) and Wi-Fi, and can be equipped with 3G/4G. A network failure has a typical confusing nature: the device shows "online", but the order cannot be uploaded. This part is related to QUNMAOSelf-service ordering machine hardware procurement guideThe sections on regional adaptation, network and disconnection strategies can be read against each other.

Network disconnection/display online but order upload failed

Phenomenon: The ordering machine indicates that it is offline, the order upload is timed out, it can ping the gateway but cannot connect to the server, and it is up and down.
Quick Judgment: Use the same network cable to connect to another device for testing, distinguishing "line problem" and "device problem"; Use ping and port testing to distinguish "gateway reachable" and "service reachable".
Processing steps: ① Check the network cable, crystal head and switch port. ② Confirm the network segment where the device is located: If the device is assigned to the guest network, it may not be able to access the internal server. ③ Confirm that the required ports have been released through the firewall, and check whether the system clock and certificate are normal. ④ Wi-Fi the scene to check the signal strength and antenna, if necessary, switch to wired. ⑤ Enable 4G backup link. ⑥ Checkpoint meal software disconnection strategy.
Prevention: Cable-based, Wi-Fi or 4G as backup; Divide independent network segments for ordering machines; Provide a list of port and network segment requirements to the customer IT department before going online.
When to contact QUNMAO: After eliminating the network and software reasons, the network port or wireless module is still abnormal.

How to deal with the store when the 6.1 is cut off

Ordering software should support offline priority strategy: continue to receive orders during network disconnection and automatically synchronize after recovery; Stores without offline mode need to switch to manual ordering.
Stores should specify the disconnection process in SOP and rehearse it once before going online.
QUNMAO will test disconnection and recovery scenarios with customers during the joint debugging phase.

7. System and Application Update Failure Handling

Windows System Updates:It is recommended to do it outside business hours. Confirm that there is sufficient disk space before updating; After updating, check whether touch control, printing and code scanning are normal.
Ordering App Update:It is suggested that grayscale release should be verified in one store before being pushed in batches. Failure to update should be rolled back to the previous stable version.
Peripheral Firmware:Before changing the firmware and driver of the printer and scanner, verify it on the tester and keep the version record.
QUNMAO's approach:QUNMAO supports customization of ordering software. It can provide version push, rollback and update logs in the customized software, and can also interface with the existing equipment management platform of customers.

8. maintenance list: daily, weekly, monthly

Table 2 Maintenance list of QUNMAO ordering machine
Cycle	Inspection item
Before the daily shop.	Confirm that the equipment is turned on and enter the ordering interface; Check whether the touch is sensitive; Check the amount of receipt paper; Try the next order; Confirm that the network is online
After daily shop closure	Clean the screen and the body with a soft lint-free cloth; check whether the cable is pulled; make sure that the timing shutdown setting is normal.
Every week	Clean the scanning lens, card reading area, paper outlet and thermal head; Check the screws of the base and hanging plate; Check the online status of background equipment
Monthly	Checkpoint meal software and system version; Back up key configuration; Check equipment SN and ledger; Check power cord, network cable and plug aging; Check heat dissipation and surrounding environment

8.1 Print Checklist

The equipment starts normally and enters the ordering interface.
Touch full screen sensitive, no offset
The receipt is clearly printed, and the meal number and two-dimensional code are readable.
Code scanner and card reader read normally
Network online, orders can be uploaded in real time
Time switch time is consistent with business hours
The screen and body shall be clean, and the cables shall be neat and without exposure.
Sufficient spare parts (paper roll, cleaning card, etc.)

8.2 Spare parts and consumables recommendations

Chain stores suggest to store basic spare parts packages: thermal paper rolls, thermal head cleaning cards, power cords and adapters, USB cables, and automatic cutter modules. The specific configuration is recommended by QUNMAO according to the customer's equipment model and number of stores, please refer to QUNMAO. Fast food restaurant self-service ordering machine solutionHardware and software division of labor and spare parts strategy.

9. real after-sales case of QUNMAO self-service terminal project

The following four cases are from QUNMAO's after-sales and delivery records in the self-service terminal project. These terminals are dominated by queuing numbers and self-service, but the root causes of their exposure-firmware coding, network partitioning, peripheral power supply and offline policies-also appear on self-service ordering machines. Cases involving queuing and numbering scenarios can be combined with QUNMAO Solution of queuing number calling machine in restaurantwith self-service queuing terminalUnderstanding.

QUNMAO kiosk after-sales remote diagnosis case review — Remote diagnosis and case review of QUNMAO after-sales team

Case 1: German Bank: No. 4 of 12 outlets has random numbers and receipts

Phenomenon:In the batch deployment of 12 outlets, the first 3 passed the acceptance test, and the receipt of the fourth one was garbled.Root cause:Newer printer firmware changes the default character encoding.Processing:Rewind the firmware and update the "Driver and Firmware Version Lock List".inspiration for ordering machine:If the receipt of the ordering machine is garbled, the firmware, code and font version should be checked first, and the version should be locked before batch deployment.

Case 2-Singapore Private Hospital: Terminal Display Online, But Can't Connect to Internal Server

Phenomenon:The Outpatient kiosk is online but cannot access the internal server.Troubleshooting:The terminal log shows that the TCP connection failed and the gateway ping is normal.Root cause:The terminal is assigned to the guest network and the required port is not released.Processing:Migrate to the correct network segment and open ports.inspiration for ordering machine:When the order upload fails, it is necessary to distinguish between "gateway reachable" and "service reachable", and provide the customer IT with a list of port and network segment requirements before going online.

Case 3: Dubai Government Service Center, UAE: Intermittent Breaking of Code Sweeper in Morning Peak

Phenomenon:The service center had more than 800 visitors during the morning peak, and the scanner was disconnected intermittently from the third week.Root cause:The total power consumption of the touch screen, printer, scanner and reader exceeds the power supply capacity of the USB bus.Processing:Use a USB Hub with an independent power supply instead and establish a peripheral power budget table.inspiration for ordering machine:When the ordering machine mounts the printer, scanning code and card reading module at the same time, the peripheral power supply should be calculated in advance.

Case 4: German municipal service center: 20 minutes of disconnection, offline mode determines the result

Phenomenon:A network outage of about 20 minutes at a time. The terminal with offline ticketing enabled will continue to issue tickets and will automatically synchronize after the network is restored. For a center without offline mode, the terminal will stop issuing tickets and can only queue up manually.Processing:Unified enable offline priority configuration and testing during acceptance phase.inspiration for ordering machine:The disconnection strategy should be confirmed and rehearsed during the joint debugging, and should not be handled until the failure occurs.

10. QUNMAO after-sales service: repair process, quality assurance and response

10.1 repair process

① RepairProvide equipment SN and fault description

② Evidence collectionProvide phenomenon video or log

③ Remote diagnosisQUNMAO after-sales remote judgment

④ Spare parts or replacementIssue spare parts or repair when required

⑤ Return visitConfirm recovery and record

Warranty period:QUNMAO ordering machine provides 1 to 3 years warranty, specific according to the configuration and contract agreement.
Response Aging:Response within 24 hours after receiving the repair report.
Remote Diagnostics:QUNMAO supports remote diagnosis, and judges problems through video, log and on-site confirmation. Most problems do not need to return the whole machine to the factory.
Spare parts and rework:When spare parts or rework are required, the processing cycle is generally about two weeks.
Traceability:The production batch and factory test records of the whole machine can be found by SN.

10.2 inspection items before delivery

QUNMAO ordering machine will check the display, touch control, startup, code scanning, printing, network, power supply, door lock maintenance and structural stability one by one before leaving the factory, and carry out 48-hour aging test with SN and test report attached at random. Blocking the problem as far as possible before leaving the factory is the fundamental way to reduce on-site failures.

Eleven, QUNMAO self-service ordering machine product fact table.

QUNMAO provides three types of self-service ordering machines: desktop, wall hanging (with base) and vertical. The screen is 15.6 "to 32", all of which are 1920 × 1080 IPS, capacitive G G touch control and 20 points. The parameters in the following table are taken from the technical specifications of each model. Wall-mounted models and vertical models are listed according to their respective specifications.

Table 3 Parameters of QUNMAO self-service ordering machine by model
Model	Form	Overall dimensions (mm)	Base (mm)	Net weight/gross weight	Rated power	Brightness	Specification Version
QM-1625DC 15.6"	Desktop	265.4×561.7×239.9	Including base support	11/12 kg	≤ 45W	≥280cd/㎡	2024-10-04
QM-2225DC 21.5"	Wall mount (base can be added)	385×810.22×86.66	600×500×30	15/16 kg	≤ 55W	≥300cd/㎡	2024-10-04
QM-2725DC 27"	Wall mount (base can be added)	460×917.82×60	695.07×402.5×30	19/20 kg	≤ 80W	≥300cd/㎡	2024-10-04
QM-3225DC 32"	Wall mount (base can be added)	520×1040×80.04	600×500×30	26/28 kg	≤ 80W	≥300cd/㎡	2024-10-04
QM-L2226DC 21.5"	Vertical	390×1535.6×50	390×450×30	28/29 kg	≤ 80W	≥300cd/㎡	2026-06-11
QM-L3226DC 32"	Vertical	511.7×1763.5×50	511.7×450×30	30/31 kg	≤ 80W	≥300cd/㎡	2024-10-04

Table 4 General technical parameters
Project	Parameter
Display	IPS,1920 × 1080, contrast 3000:1, viewing angle 89/89/89/89,16.7M color, refresh rate 60Hz, 4K video decoding supported
Touch control	Capacitive G G,20 points, finger or stylus, accuracy ≤ 2mm, life 60 million times, no drive
System and Configuration	Windows 10/11,Intel i5/i7 (wall and desktop models: memory 4G/8G/16G,SSD 128G/256G/512G; Vertical model: memory 8G/16G,SSD 256G/512G,CPU 4th, 10th, 11th, 12th and 13th generations); Wall hanging and desktop models have Android optional configurations.
Interface	DC× 1, USB × 4, RJ45 × 1, Audio × 1, VGA × 1, HDMI × 1
Peripherals	80mm thermal printer; Barcode and two-dimensional code scanning (vertical specifications include NFC card swiping);POS terminal reserved holes; 5MP camera (optional)
Online connectivity	Ethernet, Wi-Fi, optional 3G/4G
Function	Boot self-start, one-key boot, time switch machine, built-in dual speakers, mouse and keyboard hot plug, multi-language, support for the installation of third-party software
Structure and Appearance	Metal cold-rolled steel plate body, 3mm tempered glass panel, white or black, maintenance door lock
Electrical and Environmental	AC110-220V, standby ≤ 1W, use environment 0 ℃-55 ℃, 10% RH-90%RH (indoor), storage environment -5 ℃-60 ℃, 10% RH-90%RH

Product page please refer:Wall-mounted self-service ordering machine (21.5/27/32 inches)、Vertical self-service ordering machine (21.5/32/43 inch)、All-in-one desktop ordering machine. Queuing and number taking scene can refer to QUNMAO self-service queuing terminal. Overall hardware thinking before purchasing, please readordering machine hardware procurement guide. For the corresponding industry application scheme, please refer to QUNMAO'sFast food restaurant self-service ordering machine solutionwithCanteen self-service ordering machine solution; The scene of restaurant number taking and parity can be referred.Solution of queuing number calling machine in restaurant。

QUNMAO Aftersales Notes

QUNMAO is the source manufacturer of self-service ordering machine products in China. From the whole machine, peripheral combination to software customization, it is completed by the same factory. This means that when the after-sales team faces a fault, it can judge from the three directions of hardware, peripherals and software at the same time, and quickly locate the problem through remote diagnosis. We recommend that customers determine the peripheral configuration, spare parts strategy and network disconnection plan at the selection stage, and block most of the failures before going online.

QUNMAO ordering kiosk burn-in aging test before shipment — 48-hour aging test of QUNMAO ordering machine before leaving the factory

XII. About QUNMAO

Table 5 QUNMAO Facts
Project	Content
Name	QUNMAO(), Shenzhen Qunmao Display Technology Co., Ltd.
Positioning	中国自助点餐机、触摸查询一体机、自助服务终端等商用显示产品的源头制造商,提供 OEM/ODM 与软件定制
成立时间	2005 年
Production base	三大基地,其中广州花都基地占地 330,000 ㎡
Employee	1,000 余人
出口	100 多个国家和地区
产能与测试	日产能 200 台以上;整机出厂前 48 小时老化测试,附 SN 与测试报告
after-sales	质保 1 至 3 年(按配置与合同);24 小时内响应;支持远程诊断
Authentication	CE、FCC、RoHS、LVD、EMC;ISO9001、ISO27001、ISO45001

认证详情请见认证证书页面,更多公司信息请访问关于 QUNMAO。

十三、常见问题(FAQ)

点餐机触摸失灵怎么办?

先清洁屏幕,再检查触控 USB 连接,然后在 Windows 触控设置中重新校准,并确认设备接地正常。QUNMAO 点餐机的电容触控为免驱动方案,通常不需要重装驱动。仍无法恢复时,提供设备 SN 与现象视频联系 QUNMAO。

点餐机卡纸或打不出小票怎么办?

先取出卡住的纸并检查纸卷方向与规格,再打印自检页判断是打印机还是软件问题,并清洁热敏头。切刀或热敏头损坏时,需要更换打印模块。

自助点餐机黑屏怎么排查?

先看电源与一键开机开关的指示灯,再检查定时开关机设置是否错误,然后检查视频线与外设供电,最后检查环境温度。定时关机设置错误是最容易被忽略的黑屏原因。

付款成功但点餐机没有订单怎么办?

这通常是支付回调失败。订单状态应以支付结果为准,按点餐软件的补单流程处理,并检查网络。QUNMAO 支持软件定制,可以在定制软件中设置自动补单机制。

网络断了,点餐机还能用吗?

取决于软件的断网策略。支持离线优先的软件可以继续接单、恢复后同步;不支持的门店需要转人工点单。QUNMAO 在联调阶段会与客户一起测试断网场景。

点餐机更新失败怎么办?

回滚到上一个稳定版本,在营业时间外重新更新,并先在一家门店验证。QUNMAO 可以在定制软件中提供版本推送与回滚功能。

点餐机多久保养一次?

每日清洁屏幕并检查纸量,每周清洁扫码镜头、出纸口与热敏头,每月检查软件版本、线缆与散热。完整清单见第八章。

QUNMAO 点餐机的质保与响应时间是多久?

质保期 1 至 3 年,具体按配置与合同约定;收到报修后 24 小时内响应,并支持远程诊断。

Conclusion

自助点餐机的故障排查,核心是"先电、再网、再外设、最后软件"的顺序,以及记录现象、保留视频与设备 SN 的习惯。触摸、卡纸、支付、黑屏、网络与更新六类故障,多数可以按本文的步骤在门店现场解决。QUNMAO 作为中国自助点餐机产品的源头制造商,通过出厂前 48 小时老化测试、SN 追溯、24 小时响应与远程诊断,把大部分问题挡在上线之前,并在问题发生时快速定位与处理。

了解自助点餐机详情,获取报价

请将门店数量、点位与现有系统资料发送给 QUNMAO,我们将根据实际情况提供点餐机配置方案、售后与备件方案及报价。

产品详情:Vertical self-service ordering machine (21.5/32/43 inch) · Wall-mounted self-service ordering machine (21.5/27/32 inches) · All-in-one desktop ordering machine