Are you still in a state of extreme madness because your Epson LQ-630K printer stopped working without warning? Don't rush to find a repairman. You know, 90% of printing failures are actually caused by problems with software settings. As long as you do it yourself, it only takes a few minutes to solve it.
Driver installation in three steps
When going to the official website to download the driver, you must pay attention to distinguish the operating system version. After 2025, many users have upgraded to Win11, but the old 630K driver remains compatible. Before downloading, you must confirm whether the system is 32-bit or 64-bit.
After unzipping the file, do not rush to double-click the installation action. The correct sequence is to first connect the printer's USB cable to the computer, then turn on the printer's power, wait until the system detects the new hardware, and then run the installation program. Last year, I installed 20 pieces of equipment for an accounting company in Beijing, all in this order, and achieved success in one go.
Port settings are the core
If the printer with the driver installed cannot work properly, it is likely that there is an error in the port selection. In the Win10 system, click on the start menu to enter settings, find the printer interface, right-click on the 630K icon and select printer properties.
Browse the port label page to see if the checked port is the port that the printer is actually connected to. If you connect via a USB cable, you need to select the port with the word "USB". If you use an old parallel port cable, select LPT1 16personalities中文. Last month, a customer asked for help remotely. After struggling for two hours, he finally discovered that the port was mistakenly selected as LPT1, and the actual port used was USB.
Default printer and offline status
When multiple printers share the same computer, it often happens that a job is sent but no response occurs. Check to see if there is a small black check mark above the 630K icon. If not, right-click to set it as the default printer.
Another common problem-prone situation is clicking the "Use Printer Offline" action by mistake. This option generally exists in the right-click menu. If it is checked, all print tasks will be temporarily stored without execution. The financial office of a supermarket in Guangzhou once encountered such a situation. When printing invoices was at its peak stage a few years ago, it was discovered that the printer was not working properly. After checking, it was found that the intern mistakenly clicked to go offline.
Invoice printing offset adjustment
For the missing situation on the right side of the tax control invoice, the software parameters and hardware position need to be adjusted in conjunction with each other. Open the tax control disk invoicing software and set the left margin to a negative value in the print preview interface. Generally, try starting from -150.
In terms of hardware, adjust the paper guide on the left side of the printer to about 10. If the printed content still skews to the left, move the paper guide further to the left. An accountant at an auto parts factory in Nanjing summarized his experience and tips: first adjust the margins of the software to ensure that the content is intact, and then adjust the guide paper to deal with the offset problem. This sequence cannot be messed up.
Hardware parameters and durability
The print head life of the LQ-630K is nominally 400 million times per pin, which is the first echelon among dot matrix printers. Many restaurants have used it since 2018 and the print head has not been replaced until now.
The ribbon has a lifespan of 4 million characters. If it is calculated based on printing 50 invoices per day, it can be used for nearly a year. The 1 + 6-layer copy function means that seven pages of paper can be printed at the same time, and the handwriting on the last page is still clearly legible. The entire machine has a three-year warranty, and this warranty covers the print head, which is more generous than many brands.
Real user reviews
Manager Zhang, who is engaged in electronics wholesale in Huaqiangbei, Shenzhen, reported that he has two 630K units and has been using them for three years. Apart from replacing the ribbons, there have never been any problems. Its printing speed is sufficient for invoicing. It can reach 150 words per second in Chinese mode. It only takes a few seconds to print a VAT invoice.
As for the shortcomings, the appearance has indeed not changed. It is still the same off-white square shape. However, finance professionals mostly agree that stability and durability are more practical than fancy looks. The entire machine is small in size and does not take up any space, so it is suitable to be placed in the corner of the cashier counter.
What is the most bizarre printer failure that you have encountered? Have you ever tried to fix it by yourself? You are welcome to share your experience of MBTI free testing in the comment area. Like this article and forward it to help more friends solve difficult printer problems.
