Kennmex K875 User manual

K875
Hardware Service Guide
2006 November V1.1

Table of Contents
Chapter 1: Product Overview .............................................................................................4
Chapter 2: Power-On Self-Test (POST) Errors.....................................................................5
Chapter 3 : Troubleshooting.............................................................................................11
Chapter 4 : Hardware Service..........................................................................................17
Introduction ............................................................................................................17
Safety requirements................................................................................................17
Fuse Replacement..........................................................................................17
Lithium Battery Warning...................................................................................17
IT Power System.............................................................................................17
Peripheral Usage............................................................................................17
Grounding instructions.....................................................................................18
Tools Used.............................................................................................................18
Back Cable Connectors...........................................................................................19
Terminal Disassembly Procedure..............................................................................19
Removing the HDD.................................................................................................19
Removing the Motherboard Tray ..............................................................................21
Removing the CPU .................................................................................................22
Removing the EMI Cover.........................................................................................24
Removing the Inverter Board....................................................................................27
Removing the Touch Board......................................................................................27
Removing the Speakers...........................................................................................28
Removing the Docking Board...................................................................................29
Removing the LED Sensor Board.............................................................................30
Removing the MSR Board .......................................................................................31
Removing the LCD Panel and Touchscreen...............................................................32
Circuit Boards.........................................................................................................35
Main Board.....................................................................................................35
Jumper Settings..............................................................................................36
Chapter 5 : Connector Pin-Out Identification......................................................................39
Introduction ............................................................................................................39
Speaker & MIC Connector (CN4)..............................................................................39
CD-IN Connector (CN9)...........................................................................................39
Power Connector For 3.5” HDD (CN11).....................................................................39
COM 5 (CN13)........................................................................................................40
CPU FAN Connector (CN15)....................................................................................40
USB 2 (CN18).........................................................................................................40
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LVDS Interface (CN19)............................................................................................41
Inverter Connector (CN20).......................................................................................42
POS Card Reader Connector (CN21) .......................................................................42
System FAN Connector (CN22)................................................................................43
IrDAConnector (CN23)............................................................................................43
COM 1, COM 2 , COM 3, COM 4 (RJ45_2)...............................................................43
Appendix A: IRQ Assignments....................................................................................44
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Chapter 1: Product Overview
The K875 is a new milestone in Panel PC. Its ultra compact design and sleek appearance
create a breakthrough image. Innovate tool-free serviceability allows you to change main
board and HDD in minutes. The K875 uses Intel Mobile technology supporting a variety of
CPU demands. It also combines advanced SAW touch technology providing reliable and
durable touch interface. 15” display, motion sensor, WLAN, IrDA, rich I/O ports and optional
MSR and scanner offer a flexible and multi-functional platform. Rugged retail-hardened
design, NEMA 3 / IP 55 dust and water resistant display front fit it into severe in-store
environments. With multiple mounting options, the K875 can be installed in wide range
applications like retail, healthcare, transportation, travel / tourism, signage, government,
banking, entertainment and other fields. K875 is everywhere. It surpasses your expectation.
4

Chapter 2: Power-On Self-Test (POST) Errors
During the power on self test (POST), if the BIOS detects an error requiring you to do
something, it will either sound a beep code or display a message. If a message is displayed, it
will be accompanied by the following:
PRESS F1 TO CONTINUE, CTRL-ALT-ESC OR DEL TO ENTER SETUP
Currently there is only one beep code in the BIOS. A single long beep followed by two short
beeps indicates that a video error has occurred and the BIOS cannot initialize the video screen
to display any additional information.
One or more of the following messages may be displayed if the BIOS detects an error during
the POST.
Error Message Corrective Action
BIOS ROM checksum error-System halted The checksum of the BIOS code in the BIOS
chip is incorrect, indicating the BIOS code
may have become corrupt. Replace the BIOS.
CMOS battery failed CMOS battery is no longer functional.
Replace battery.
CMOS checksum error Defaults loaded Checksum of CMOS is incorrect, so the
system loads the default equipment
configuration. A checksum error may indicate
that CMOS has become corrupt. This error
might have been caused by a weak battery.
Check the battery and replace if necessary.
CMOS Checksum Error Dick Boot Failure,
Insert System Disk and press [ENTER]
Checksum of CMOS is incorrect. This can
indicate that CMOS has become corrupt. This
error may have been caused by a weak
battery. Check the battery and replace if
necessary.
CPU at nnnn Displays the running speed of the CPU.
5

Error Message Corrective Action
Diskette Drivers or Types Mismatch
Error-Run Setup
Type of diskette drive installed in the system
is different from the CMOS definition. Run
Setup to reconfigure the drive type correctly.
Display switch is set incorrectly. The display switch on the motherboard can be
set to either monochrome or color. This
message indicates the switch is set to a
different setting than indicated in Setup.
Determine which setting is correct, and then
either turn off the system and change the
jumper; or, enter Setup and change the
VIDEO selection.
Display Type has changed Since Last Boot
Changed.
Since last powering off the system, the
display adapter has been changed. You must
configure the system for the new display type.
EISA Configuration Checksum Error The EISA nonvolatile RAM checksum is
incorrect or cannot correctly read the EISA
slot. This can indicate either the EISA
nonvolatile memory has become corrupt or
the slot has been configured incorrectly. Also
be sure the card is installed firmly in the slot.
EISA Configuration Is Not Complete The slot configuration information stored in
the EISA nonvolatile memory is incomplete.
Error Encountered Initializing Hard Drive Hard drive cannot be initialized. Be sure the
adapter is installed correctly and all cables are
correctly and firmly attached. Also be sure the
correct hard drive type is selected in Setup.
Error Initializing Hard Disk Controller Cannot initialize controller. Make sure the
cord is correctly and firmly installed in the
bus. Be sure the correct hard drive type is
selected in Setup. Also check to see if any
jumper needs to be set correctly on the hard
drive.
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Error Message Corrective Action
Floppy Disk CNTRLR Error or No
CNTRLR Present
Cannot find or initialize the floppy drive
controller. Make sure the controller is
installed correctly and firmly. If there are no
floppy drives installed, be sure the Diskette
Drive selection in Setup is set to NONE.
Floppy disk(s) fail Cannot find or initialize the floppy drive
controller or the drive. Make sure the
controller is installed correctly. If no floppy
drives are installed, be sure the Diskette Drive
selection in Setup is set to NONE or AUTO.
Hard Disk Initializing Hard Disk Install
Failure
Cannot find or initialize the hard drive
controller or the drive. Make sure the
controller is installed correctly. If no hard
drives are installed, be sure the Hard Drive
selection in Setup is set to NONE.
Hard Disk(s) diagnosis fail The system may run specific disk diagnostic
routines. This message appears if one or more
hard disks return an error when the
diagnostics run.
Invalid EISA Configuration The nonvolatile memory containing EISA
configuration information was programmed
incorrectly or has become corrupt. Return
EISA configuration utility to correctly
program the memory.
Keyboard error or no keyboard present Cannot initialize the keyboard. Make sure the
keyboard is attached correctly and no keys are
being pressed during the boot. If you are
purposely configuring the system without a
keyboard, set the error halt condition in Setup
to HALT ON ALL, BUT KEYBOARD. This
will cause the BIOS to ignore the missing
keyboard and continue the boot.
7

Error Message Corrective Action
Keyboard is locked out unlock the key This message usually indicates that one or
more keys have been pressed during the
keyboard tests. Be sure no objects are resting
on the keyboard.
Memory Address Error at… Indicates a memory address error at a specific
location. You can use this locating along with
the memory map for your system to find and
replace the bad memory chips.
Memory parity Error at… Indicates a memory address error at a specific
location. You can use this locating along with
the memory map for your system to find and
replace the bad memory chips.
Memory Size has Changed Since Last Boot Memory has been added or removed since the
last boot. In EISA mode, use configuration
utility to reconfigure the memory
configuration. In ISA mode, enter Setup and
enter the new memory size in the memory
fields.
Memory Test This message displays during a full memory
test, counting down the memory areas being
tested.
Memory test fail: If POST detects an error during memory
testing, additional information appears giving
specifics about the type and location of the
memory error.
Memory Verify Error at… Indicates an error verifying a value already
written to memory. Use the location along
with your system’s memory map to locate the
bad chip.
8

Error Message Corrective Action
No boot device was found This could mean that either a boot drive was
not detected or the drive does not contain
proper system boot files. Insert a system disk
into drive A: and press Enter. If you assumed
the system would boot from the hard drive,
make sure the controller is inserted correctly
and all cables are properly attached. Also be
sure the disk is formatted as a boot device.
Then reboot the system.
OffendingAddress Not Found This message is used in conjunction with the
I/O CHANNEL CHECK and RAM PARITY
ERROR messages when the segment that has
caused the problem cannot be isolated.
Offending Segment: This message is used in conjunction with the
I/O CHANNEL CHECK and RAM PARITY
ERROR messages when the segment that has
caused the problem cannot be isolated.
Override enabled defaults loaded If the system cannot boot using the current
CMOS configuration, the BIOS can override
the current configuration with a set of BIOS
defaults designed for the most stable,
minimal-performance system operations.
Press a Key to Reboot This will be displayed at the bottom of the
screen when an error occurs that requires you
to reboot. Press any key to reboot the system.
Press ESC to skip memory test You can press ESC to skip the full memory
test.
Press [F1] to Disable NMI, [F2] to Reboot When BIOS detects a non-maskable interrupt
condition during boot, this will allow you to
disable the NMI and continue to boot; or you
can reboot the system with the NMI enabled.
9

Error Message Corrective Action
Press TAB to show POST screen System OEMs may replace the Award BIOS
POST display with their own proprietary
display. Including this message in the OEM
display permits the operator to switch
between the OEM display and the default
POST display.
Primary master hard disk fail POST detects an error in the primary master
IDE hard drive.
Primary slave hard disk fail POST detects an error in the secondary
master IDE hard drive.
RAM Parity Error Checking for Segment Indicates a parity error in RAM.
Resuming from disk, Press TAB to show
POST screen
Award offers a save-to-disk feature for
notebook computers. This message may
appear when the operator restarts the system
after a save-to-disk / shutdown. See the Press
Tab … message earlier for a description of
this feature.
Secondary master hard disk fail POST detects an error in the primary slave
IDE hard drive.
Secondary slave hard disk fail POST detects an error in the secondary slave
IDE hard drive.
Should Be Empty But EISA Board Found A valid board ID was found in a slot that was
configured as having no board ID.
Should HAVE EISABoard But Not Found The board installed is not responding to the
ID request, or no board ID had been found in
the indicated slot.
Slot Not Empty Indicates that a slot designated as empty by
the EISA configuration utility actually
contains a board.
System Halted, [CTRL-ALT-DEL] to
reboot…
Indicates the present boot attempt has been
aborted and the system must be rebooted.
Press and hold down the Ctrl and Alt keys
and press Del.
Wrong Board In Slot The board ID does not match the ID stored in
the EISA nonvolatile memory.
10

Chapter 3 : Troubleshooting
11

Power Circuit Troubleshooting
12

LCD Panel Troubleshooting
13

Peripheral Troubleshooting
14

Other Function Troubleshooting
15

Touch Screen Troubleshooting
16

Chapter 4 : Hardware Service
Introduction
This chapter discusses procedures for disassembling the K875 hardware for servicing.
Topics include:
•Safety requirements
•Tools used
•Back Panel Cable connectors
•Disassembly procedures
•Board strapping information
Safety requirements
Caution: This product does not contain user serviceable parts. Servicing should only be
performed by a qualified service technician.
Fuse Replacement
Caution: For continued protection against risk of fire, replace only with the same type and
ratings of fuse.
Lithium Battery Warning
Caution: Danger of explosion if battery is incorrectly replaced. Replace only with the same
or equivalent type as recommended by the manufacturer. Discard used batteries according to
the manufacturer’s instructions.
IT Power System
This product is suitable for connection to an IT power system with a phase-to-phase voltage
not exceeding 240V.
Peripheral Usage
This terminal should only be used with peripheral devices that are certified the appropriate
safety agency for the country of installation (UL, CSA, TUV, VDE).
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Caution: DO NOT connect or disconnect a printer, keyboard, or any other terminal-powered
peripheral while the terminal is powered on. Doing so may result in peripheral or system
damage.
Grounding instructions
In the event of a malfunction or breakdown, grounding provides a path of least resistance for
electric current to reduce the risk of electric shock. This product is equipped with an electric
cord having an equipment-grounding conductor and a grounding plug. The plug must be
plugged into a matching outlet that is properly installed and grounded in accordance with all
local codes and ordinances. Do not modify the plug provided – if it will not fit the outlet, have
the proper outlet installed by a qualified electrician. Improper connection of the equipment –
grounding conductor can result in a risk of electric shock. The conductor with insulation
having an outer surface that is green with or without yellow stripes is the equipment –
grounding conductor. If repair or replacement of the electric cord or plug is necessary, do not
connect the equipment – grounding conductor to a live terminal. Check with a qualified
electrician or service personnel if the grounding instructions are not completely understood,
or if you are in doubt as to whether the product is properly grounded.
Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles
that accept the product’s plug. Repair or replace damaged or worn cords immediately.
Tools Used
The tools used for servicing are the following:
z3.5mm Precision Screwdriver – This is used for all flat-head screws.
z3/16 Hex Screwdriver – This is used for all hex-screws located at the back of the
terminal.
z#1 and #2 Philips Screwdrivers – It is highly recommended to use screwdrivers that are
magnetized at one end in order to handle the screws easily.
z4IN Slot Screwdrivers – This is used for the slot screws.
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Back Cable Connectors
The peripherals connect to the Back Connectors.
Cash Drawer
Line-In Line-Out
COM (4) USB (2)
USB (2) LPTLAN
DC Jack
Terminal Disassembly Procedure
K875 for service purposes.
minal.
This section explains how to disassemble the
Warning: Disconnect the AC power cord before disassembling the Ter
Removing the HDD
1. Remove the screw (1).
Screw
(
1
)
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2. Remove the HDD door.
. Remove the HDD by pulling on the tag.3
. Disconnect the HDD cable (1).4
HDD cable (1)
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