Adjusting Volume on Verifone M400
- Katie Gielarowski
How to adjust the volume on the Verifone M400 pin pad.
Instructions
Press 1,5,9 simultaneously.
Choose Control Panel.
Choose SysMode.
Choose Supervisor.
Type in the password – typically 1668321 – and press Enter key.
Choose Administration.
Choose Sound Utilities.
Choose Change Volume.
Use your finger to slide the volume bar to the right to increase or the left to decrease the volume level.
10. Press the Red X to exit back to the Main Menu. (3 times)
11. Choose Diagnostics.
12. Choose Buzzer/Audio.
13. Choose Beep to hear how loud or soft the beeps will be.
14. Choose Play audio file to hear how loud or soft a video would be that includes audio.
I have an answer regarding volume (item# 8). Volume is a [perm] parameter, so, unfortunately, it cannot be changed via the SET_PARM command. It can only be changed by either a manual process or a signed file. This param controls the overall volume on the device. It defaults to 50%. So, if the customer needs that changed, a Jira ticket would have to be raised to let us know what volume level they would prefer, and a file would have to be generated. I think you might want to play with this in the lab to see how changing the volume actually sounds. Here’s how you can manually change and test the volume:
I just played around with this here, and truthfully, it was very hard to hear the sounds if I set below 50%. And that was still quite soft. For me, the sweet spot was around 75%. 100% seemed too loud to me, but, then again, I am in an office with little ambient noise, and the terminal is less than a foot from my ears. So, at a customer location, the volume may need to be that loud in order to be heard.