Solving General Problems - HP Engage One Retail System 141 Maintenance And Service Manual

Serial Port Devices do not function after hot swapping. Hot swapping is when connecting or disconnecting a serial device while
the system is powered on.
Cause
RPOS platform serial ports do not support hot swapping.
The magnetic strip reader (MSR) beeps or blinks in an unusual way or card data is incomplete or garbled.
Cause
The MSR may be improperly configured or has become defective.
A new MSR does not work.
Cause
The new MSR needs to be configured with the system settings
using HP USB Mini Magnetic Stripe Reader (MSR) Configuration
Software.

Solving general problems

You may be able to easily resolve the general problems described in this section. If a problem persists and you
are unable to resolve it yourself or if you feel uncomfortable about performing the operation, contact an
authorized dealer or reseller.
WARNING!
board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect
the power cord from the wall outlet and allow the internal system components to cool before touching.
Cannot access the Computer Setup (F10) Utility when booting the computer.
Cause
The Computer Setup (F10) Utility is set to "fast boot" causing the
F10 access screen to display too briefly when booting the
computer.
104 Chapter 12 Troubleshooting without diagnostics
When the computer is plugged into an AC power source, voltage is always applied to the system
Solution
To ensure that serial device drivers load and to avoid hardware
damage, power the system off before connecting or disconnecting
serial devices. Hot plugging serial devices is not supported and
doing so can cause permanent hardware damage and void
warranty.
Solution
Try cleaning the MSR. Swipe a standard cleaning card through the
MSR a couple of times to clean the MSR. You can order a standard
cleaning card online. Alternately, you can create a cleaning card by
putting a thin, oil free cloth around a credit card.
Solution
1. Connect the old MSR (the one being replaced).
2. Start HP magnetic stripe reader configuration utility
(http://h20564.www2.hp.com/hpsc/swd/public/detail?
swItemId=ir_125989_1&swEnvOid=4047).
3. Retrieve the configuration details from the old MSR and
save.
4. Connect the new MSR (the replacement).
5. Write the saved configuration to the new MSR.
Solution
Before turning on the computer, press and hold F10. Turn on the
computer and continue to hold
(F10) Utility is displayed.
- or –
F10 until the Computer Setup