Maintenance and Service Guide
Table Of Contents
- Product overview
- Standard features
- Integrated features
- Stand options
- HP Engage One Basic I/O Connectivity Base components
- HP Engage One Advanced I/O Connectivity Base components
- Connecting an AC adapter to power
- Locating the Engage One power button
- Locating the I/O connectivity base power button
- Adjusting the Engage One head unit
- Engage One serial number location
- I/O connectivity base serial number location
- Illustrated parts catalog
- Routine care, SATA drive guidelines, and disassembly preparation
- Removal and replacement procedures
- Preparation for disassembly
- Attaching an I/O connectivity base to the Engage One
- Connecting a standalone I/O connectivity base to the Engage One
- Configuring the I/O connectivity base’s powered serial ports
- Connecting a standalone optional fingerprint reader to the I/O connectivity base
- Attaching an optional fingerprint reader to the I/O connectivity base
- Removing and attaching the Engage One head unit to the stand
- Mounting the Engage One head unit to a wall
- Mounting the Engage One to a counter top
- Installing a security cable on the I/O connectivity base
- Installing a security cable on the Engage One column
- Installing a security screw on the Engage One head unit and stand
- Installing a security screw on the Engage One head unit and VESA mount
- Removing and replacing the column printer
- Removing the display panel
- System board components
- Installing a 2 x 20 customer-facing display (CFD)
- Memory modules
- Removing and installing an M.2 solid-state drive (SSD)
- Removing the WLAN module
- Removing the heat sink
- Removing the fan assembly
- Removing the speakers
- Removing the power button board
- Removing the MSR (Magnetic Stripe Reader)
- Removing the MSR LED board
- Removing the system board
- Removing the antennas
- Using the column printer
- Cable routing configurations
- Cable matrix for Engage One with integrated column printer and basic I/O connectivity base
- Cable matrix for Engage One with integrated column printer and advanced I/O connectivity base
- Cable matrix for Engage One without I/O connectivity base
- Cable matrix for Engage One with I/O connectivity base
- Cable matrix for Engage One with basic I/O connectivity base and standalone printer
- Cable matrix for Engage One with advanced I/O connectivity base and standalone printer
- Configuring the software
- Computer Setup (F10) Utility
- POST error messages and diagnostic front panel LEDs and audible codes
- Password security and resetting CMOS
- Using HP PC Hardware Diagnostics (UEFI)
- Troubleshooting without diagnostics
- Safety and comfort
- Before you call for technical support
- Helpful hints
- Solving retail system-specific problems
- Solving general problems
- Solving printer problems
- Solving hardware installation problems
- Solving network problems
- Solving memory problems
- Solving USB flash drive problems
- Solving Internet access problems
- Solving software problems
- System backup and recovery
- Power cord set requirements
- Statement of memory volatility
- Specifications
- Index

Network controller stopped working when an expansion board was added to the computer.
Cause Solution
The network controller requires drivers. Verify that the drivers were not accidentally deleted when the
drivers for a new expansion board were installed.
Network controller stops working without apparent cause.
Cause Solution
The cable is not securely connected. Ensure that the cable is securely attached to the network
connector and that the other end of the cable is securely attached
to the correct device.
The network controller is defective. Contact an authorized service provider.
New network card will not boot.
Cause Solution
New network card may be defective or may not meet industry-
standard specications.
Install a working, industry-standard NIC, or change the boot
sequence to boot from another source.
Cannot connect to network server when attempting Remote System Installation.
Cause Solution
The network controller is not congured properly. Verify Network Connectivity, that a DHCP Server is present, and
that the Remote System Installation Server contains the NIC
drivers for your NIC.
System setup utility reports unprogrammed EEPROM.
Cause Solution
Unprogrammed EEPROM. Contact an authorized service provider.
Solving memory problems
If you encounter memory problems, some common causes and solutions are listed in the following table.
CAUTION: Power may still be supplied to the DIMMs when the computer is turned o (depending on the
Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the
computer power cord before attempting to reseat, install, or remove a memory module.
For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory.
Otherwise, the computer will not boot the operating system.
112 Chapter 12 Troubleshooting without diagnostics










