HP Hewlett Packard Laptop VC4815 User Manual

Service Reference Guide  
HP Compaq vc4815 Thin Client  
Document Part Number: 480421-001  
J a n u a r y 2 0 0 8  
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Contents  
Product Description  
Network Firmware ..........................................................................................................1–1  
HP Compaq Thin Client vc4815 Series ..........................................................................1–2  
Serial Number Location ..................................................................................................1–6  
Connecting USB Equipment ...........................................................................................1–6  
Locating Additional Information ....................................................................................1–7  
Spare Parts Lists  
vc4815 Series Spare Parts List ........................................................................................2–1  
HP vc4815 Series Setup (F10) Utility  
Using HP vc4815 Series Setup (F10) Utility ..................................................................3–1  
Diagnostics and Troubleshooting  
Diagnostic Front Panel LEDs and Audible Codes ..........................................................4–1  
Appendix A vc4815 Serial ports definition  
Service Reference Guide  
iii  
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Contents  
Upload the Flash Image and system BIOS  
Upload the Flash image and BIOS .................................................................................... 5–1  
Thin Client vc4815 Specifications  
6-1  
iv  
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1
Product Description  
The HP Compaq Thin Client vc4815 Series are Redflag Linux-based  
terminals that connect over a network to a server where all processing  
and storage occurs. Because of the nature of the products,  
troubleshooting is significantly simpler than on a standard PC and  
previous thin clients.  
The Graphical User Interface (GUI) is Chinese on all thin clients. If  
you are using a foreign language keyboard, you will need to set  
localized settings to perform the localization between a server-based  
application and the device, but interaction with the unit itself remains in  
Chinese.  
Network Firmware  
PXE (Pre-boot Execution Environment) is supported on all HP  
Compaq Thin Client vc4815 Series products.  
PXE allows a client to boot from a server on a network prior to  
booting the embedded Operating System (OS) from the local Flash  
module. As long as the system is connected to AC power, the Network  
Interface Controller (NIC) on a PXE-enabled client remains powered  
even when the system is turned off. This allows a network  
administrator to remotely wake up the unit and perform various  
management tasks, including loading the operating system and other  
software onto the device from a server over the network.  
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Product Description  
HP Compaq Thin Client vc4815 Series  
Front view - vc4815  
Power button  
Flash activity LED  
USB ports (2)  
1
3
4
Power LED  
2
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1-2  
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Product Description  
Product Description  
HP Compaq Thin Client vc4815 Series  
Rear View of the vc4815  
PS/2 connectors (2)  
Serial connectors (4)  
Monitor connector  
Power connector  
1
2
3
4
5
6
7
8
Lock Slot  
Ethernet RJ-45 connector  
Parallel connector  
Universal Serial Bus (USB)  
connectors (2)  
CAUTION: The vc4815 Series power cord connector is for use only  
with the supplied power adaptor. Replace only with the same or equivalent  
type as recommended by the manufacturer.  
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1-3  
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Product Description  
Serial Number Location  
The serial number is displayed on the side of the unit.  
Connecting USB Equipment  
USB mouse devices and keyboards do not require special drivers and  
are considered to be plug and play peripherals. Certain USB devices  
such as printers and modems, however, may require special drivers.  
For information on requirements for special drivers, refer to the  
documentation that is included with the USB device.  
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1-4  
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Product Description  
Locating Additional Information  
The following documentation is available to support these products:  
Quick Setup  
Hardware Reference Guide  
Redflag Linux User manual  
Customer and Service Notifications, Bulletins and Advisories  
Quickspecs  
Documentation, white papers, and drivers are subject to change. For the  
latest HP thin client documentation, visit the following Web site:  
http: //h18004.www1.hp.com/products/thinclients/software.html  
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1-5  
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2
Spare Parts Lists  
vc4815 Series Spare Parts List  
The spare parts tables that follow provide a listing of the spare parts  
available for the Thin Client vc4815 Series.  
vc4815 Series Spare Parts Table  
Description  
Spare Part  
Number  
SPS-Base, vc4815 512F/512R Linux  
SPS-Base, vc4815 1GBF/512R Linux  
SPS-Base, vc4815 2GBF/512R Linux  
SPS-KYBD USB, Basic, Vista-PRC  
SPS-MOUSE,OPTICAL CARBONITE  
458813-001  
458814-001  
458815-001  
435382-AA1  
390938-001  
For a full list of supported and leveraged Hewlett-Packard and third  
party options, go to:  
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1-6  
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3
HP vc4815 Series Setup  
(F10) Utility  
Using HP vc4815 Series Setup (F10) Utility  
The Setup utility can be accessed only by turning the computer on or  
restarting the system. To access the Setup Utility menu, complete the  
following steps:  
1. Turn on or restart the computer.  
2. When the F10 <BIOS Setup> message displays in the task bar  
at the bottom of the screen, press the F 1 0 key.  
If you do not press the F 1 0 key while the message is displayed, you  
must restart the computer again to access the utility. When the F10  
Post Screen display is set to zero seconds, it may be necessary to  
press and hold F 1 0 on the keyboard, then power on the computer.  
3. A choice of five menu headings and five task headings appears in  
the Setup Utility menu:  
Menu Headings: System Information, Standard CMOS Features,  
Advanced BIOS Features, Integrated Peripherals, and Power  
Management Setup.  
Task Headings: Load Defaults Setting, Set Supervisor  
Password, Set User Password, Save Setting and Exit, and  
Exit without Saving.  
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3-1  
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HP vc4815 Series Setup (F10) Utility  
4. Use the arrow (up and down, or left and right) keys to select the  
appropriate heading, then press the Enter key. To return to the  
Setup Utility menu, press the Esc key.  
5. To apply and save changes, select Save Setting and Exit Setup.  
If you have made changes that you do not want applied, select  
Exit without Saving.  
To reset to factory settings, select Load Defaults Setting. This  
option will restore the original factory system defaults.  
CAUTION: Do NOT turn the computer power OFF while the ROM  
is saving your F10 Setup changes because the CMOS could become  
corrupted. It is safe to turn off power to the computer ONLY after you exit  
the F10 Setup screen.  
v c 4 8 1 5 Series Setup Utility  
Heading  
Option  
Description  
System  
Lists:  
Information  
- Product name  
- BIOS Version  
- BIOS Release Date  
- System Chipset Type  
- Processor type  
- Processor Speed  
- CPU ID  
- DDR Memory Size  
- UUID (Universal Unique ID)  
- Chassis Serial Number  
- Set Asset TAG number  
- Asset Tag Number  
Support for specific Setup options may vary depending on your  
hardware configuration.  
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3-2  
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HP vc4815 Series Setup (F10) Utility  
v c 4 8 1 5 Series Setup Utility (Continued)  
Heading  
Option  
Description  
Standard  
CMOS  
System Date Allows you to set the date  
Features  
System Time Allows you to set the time.  
IDE channel 0 Indicates ATA Flash settings  
Master  
IDE Channel 1  
Master  
Halt on  
Allows you to select system response  
when POST Error has been detected.  
Advanced  
BIOS  
Features  
Quick Power  
On Self Test  
Allows the system to skip certain tests  
while booting so the unit has a faster  
boot.  
Hard Disk Boot Allows Setting of ATA Flash Disk or  
Priority  
Bootable Add-in Cards Boot Priority  
First Boot  
Device  
Select Boot Device Priority. The default is  
set to Hard Disk.  
Second Boot  
Device  
Select Boot Device Priority  
Third Boot  
Device  
Select Boot Device Priority  
Boot other  
Device  
Enable/disable boot from other device  
Select Power On state for NumLock.  
Bootup  
NumLock  
Status  
Security  
Option  
Select whether the Password is required  
every time the system boots or only when  
you enter Setup.  
Support for specific Setup options may vary depending on your  
hardware configuration.  
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3-3  
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HP vc4815 Series Setup (F10) Utility  
v c 4 8 1 5 Series Setup Utility (Continued)  
Heading  
Option  
Description  
Integrated  
USB Controller Enable/disable USB controller  
Peripherals  
Integrated  
Audio  
Enable/disable onboard AC97 audio  
controller  
Network  
Enable/disable onboard LAN device  
Controller  
Onboard Serial Select serial port base IO port address  
port 1  
and IRQ  
Onboard Serial  
port 2  
Onboard Serial  
port 3  
Onboard Serial  
port 4  
Onboard Parallel Select parallel port base IO port address  
Port  
and IRQ  
Parallel Mode  
Select parallel port transfer mode  
ECP Mode  
Use DMA  
Select DMA channel if parallel is  
Operated in ECP mode.  
Power  
Manage-  
ment Setup  
Restore On  
AC/Power Loss  
Allows you to set off, On, Last State  
Resume on PME  
Enable/disable system wakeup capability  
for onboard LAN device and PCI Card  
Enable/disable Wake on Ring  
Wake on Ring  
Resume On  
Alarm  
Enable/disable Resume On Alarm, allow to  
set Date(of month), Resume  
Time(hh:mm:ss)  
Load Defaults  
Setting  
Select Yes or No (Y/N)  
Support for specific Setup options may vary depending on your  
hardware configuration.  
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3-4  
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HP vc4815 Series Setup (F10) Utility  
HP vc4815 Series Setup (F10) Utility  
Heading Option Description  
v c 4 8 1 5 Series Setup Utility (Continued)  
Heading  
Option  
Description  
Set  
Supervisor  
Password  
Allows you to set and enable the  
administrative password.  
If the administrative password is set, it  
is required to change the Setup options,  
flash the ROM, and make changes to  
certain plug and play settings under  
Windows  
Set User  
Password  
Allows you to set and enable the user  
password.  
When the user password is set,  
it prevents unauthorized access to the  
user’s setup. User password provides  
read-only access to Setup options.  
Save  
Setting  
and Exit  
Saves data to CMOS  
Exit  
without  
Saving  
Exits the Setup Utility without saving any  
changes.  
Support for specific Setup options may vary depending on your  
hardware configuration.  
Service Reference Guide  
3 -5  
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4 Diagnostics and Troubleshooting  
POST Diagnostic Front Panel LEDs and Audible  
Codes  
This section covers the front panel LED codes as well as the audible codes that may occur  
before or during POST that do not necessarily have an error code or text message  
associated with them.  
If you see flashing LEDs on a PS/2 keyboard look for flashing LEDs on the front  
panel of the computer and refer to the following table to determine the front panel  
LED codes.  
Recommended actions in the following table are listed in the order in which they  
should be performed.  
Diagnostic Front Panel LEDs and Audible Codes  
Beeps &  
LED blink  
Possible Cause  
Activity  
Recommended Action  
Computer on.  
None  
Green Power LED On.  
None  
Green Power LED flashes  
five  
times, once every second,  
followed by a two second  
pause.  
CAUTION: 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 DIMM module.  
1. Reseat DIMMs.  
Pre-video memory  
5
2. Replace DIMMs one at a time  
Beeps stop after fifth  
to isolate the faulty module.  
iteration but LEDs continue 3. Replace third-Party memory with HP memory.  
until problem is solved. 4.Replace the system board  
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4 -1  
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Diagnostic Front Panel LEDs and Audible Codes  
Possibl  
e Cause  
Beeps  
& LED  
blink  
Activity  
Recommended Action  
System  
unable  
to power  
on.  
None  
System does  
not power on  
and LEDs are  
not flashing.  
Press and hold the power button for less than 4  
seconds.  
If the hard drive LED turns green, the power button  
is working correctly. Then, Replace the system  
board.  
OR  
If the hard drive LED does not turn on green  
then:  
1. Check that the unit is plugged into a working AC  
outlet.  
2. Check that both power supply cables are properly  
connected  
to the system board.  
3. Check to see if the 5V_aux light on the system  
board is turned on. If it is turned on, then replace  
the power button  
harness. If the problem persists, replace the system  
board.  
4. If the 5V_aux light on the system board is not  
turned on, remove the expansion cards one at a  
time until the 5V_aux light on the system board  
turns on. It the problem persists, replace the power  
adapter.  
* Replacing the system board should ONLY be the last resort.  
* * Replacing the power supply should ONLY be the last resort.  
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4-2  
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5
Reload Flash Image and BIOS  
System Requirements  
To create a recovery device for the purpose of reflashing or restoring  
the software image on the ROM, you will need the following:  
One or more HP Compaq vc4815 Series Thin Clients  
USB flash device 512MB Compatible USB flash devices (drive  
keys) are available from  
This restore method will not work with all USB flash devices.  
USB flash devices with multiple partitions generally do not  
support this restore method. The range of USB flash devices  
available on the market is constantly changing. Not all USB flash  
devices (drive keys) have been tested with the HP Compaq Thin  
Client Imaging Tool.  
USB CD-ROM drive for thin client (if using the ISO Image  
option)  
Before using the utility, you must download the appropriate image  
Service Reference Guide  
5-14  
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Reload image and system BIOS  
Hainan Image Reloading  
1, Download the Image file *.gho from web.  
2, Make a DOS Bootable USB flash drive(>=512M). Copy the image file and  
ghost.exe (ver11.0.1) to the USB flash drive.  
3, Boot from the USB device. Run ghost.exe.  
System BIOS Update  
1. Download the SoftPaq .EXE file to a directory on your hard drive.  
2. Execute the downloaded file and follow the on-screen instructions.  
3. Choose one of the following three options when presented:  
- Create BIOS Flash Diskette,  
- Create BIOS Flash DriveKey  
4, Boot Unit with the diskette or Flash DriveKey made last in step.  
Do not power off or reset the unit during flash BIOS process.  
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5-2  
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6
Thin Client vc4815 Specifications  
Specifications - v c 4 8 1 5 Series  
Item  
Description  
G V665PA#AB2 vc 4815 Processor  
VIA C 7 1G Hz  
vc 4815 LNX 512F/512R  
PRC  
Chipset  
Operating System  
Flash Memory  
VIA C N700 + 8237R  
Redfla g Linux (C hinese version only)  
Apa c er ADMII series 44PIN 180 degree DOM,  
512 MB, 1G B, 2G B  
2 slots  
HP 512 MB DDR2 533 SDRAM or DDR2 667 SDRAM downgra ded  
to 533 One slot  
(NOTE: 16 MB of system RAM is reserved for gra phic s memory)  
VIA S3 Unic hromo Pro G ra phic integra ted  
No  
Firefox Explorer with ja va support  
Altiris Deployment Solution (c lient a gent)  
G V666PA#AB2  
vc 4815 LNX 1G BF/512R  
PRC  
Memory  
G V667PA#AB2  
vc 4815 LNX 2G BF/512R  
PRC  
Graphics  
PCI Expansion  
Browser  
Client Management  
Software  
Terminal Personalities Yes, termina l emula tion tool under Linux  
Standard  
Power adapter  
Keyboard  
65W  
USB or PS/2 (both supported)  
Keyboa rd inc luded with every thin c lient. Type of inc luded  
keyboa rd (USB or PS/2) va ries by region  
Mouse  
USB or PS/2 (both supported)  
Keyboa rd inc luded with every thin c lient. Type of inc luded  
keyboa rd (USB or PS/2) va ries by region  
Foot stand  
Yes  
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Thin Client vc4815 Specifications  
Specifications - v c 4 8 1 5 Series  
Item  
Description  
Memory  
Flash Memory  
System Memory  
512 MB , 1G B, 2G B, Apa c er ADMII series 44PIN 180 degree DOM  
512 MB DDR-II SDRAM  
NOTE: 16 MB of system RAM is reserved for gra phic s memory  
Graphics  
VIA S3 Unic hromo Pro VG A integra ted  
Mode  
Refresh Rates  
60-120 Hz  
60-100 Hz  
60-85 Hz  
60-85 Hz  
60-85 Hz  
Color Depth  
16/32 bit  
16/32 bit  
16/24 bit  
16/32 bit  
16/24 bit  
800 x 600  
1024 x 768  
1152 X 864  
1280 x 1024  
1600 x 1200  
640x480  
60-160 Hz  
60-120 Hz  
60-100 Hz  
60-85 Hz  
60-85 Hz  
60-85 Hz  
60-85 Hz  
60-85 Hz  
60-85 Hz  
60-85 Hz  
60-85 Hz  
60-75Hz  
60 Hz  
800x600  
1024x768  
1280x720  
1280x768  
1280x800  
1280x1024  
1360x768  
1366x768  
1440x900  
1600x1200  
1920x 1440  
1440x 900  
1680 x 1050  
1920x1200  
60 Hz  
60 Hz  
Input/Output/  
Peripheral Support  
Keyboard  
Mouse  
HP USB or PS2 Sta nda rd Keyboa rd  
HP USB or PS2 two-button sc roll mouse  
Printer  
Loc a l a nd/or network printers (RDP, IC A, LPD) a s per the printer  
support sta tement  
Video  
VIA S3 Unic hromo Pro VG A integra ted  
Security  
One sec urity loc k slot (c a ble loc k sold sepa ra tely)  
Terminal Server  
Protocols  
Integra ted rdesktop RDP c lient (1.4.1) a nd C itrix IC A 10.0 c lient support. Termina l  
Emula tion softwa re re-development for fina nc e  
Networking  
10/100 Ba seT Fa st Ethernet, twisted pa ir (RJ-45)  
TC P/IP with DNS a nd DHC P, Direc t C onnec tion through RS-232  
Point-to-Point Protoc ol (PPP),PPPoE, PPTP, EAP, PEAP, Wa ke on LAN (WOL), PXE  
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I/O ports and  
connectors  
Resident Operating  
System  
Four USB ports (two in front, two in rea r), 4 seria l, one pa ra llel, one RJ-45, two PS/2  
Redfla g Linux  
Session Allocation  
Managers/Session  
Brokers  
HP PC Session Alloc a tion Ma na ger Softwa re for the C onsolida ted C lient Infra struc ture,  
C itrix Desktop Broker for Virtua l Desktop Infra struc ture  
Server OS  
Compatibility/  
Support  
Open sourc e Termina l Emula tion:  
C T100, VT100, VT220, VT382, Xenix, ANSI  
Termina l servic e:  
Mic rosoft® Windows® NT 4.0 Server, Windows NT 4.0 Termina l Server Edition, Windows  
2000/2003 Server fa milies, Windows 2000/2003 Server Termina l Servic es, Windows 2000  
Adva nc ed Server, Windows 2000 Adva nc e Server Termina l Servic es  
C itrix:  
C itrix Presenta tion Server 4.0, inc luding the Desktop Broker fea ture, C itrix Meta fra me  
Presenta tion Server 3.0, C itrix Meta fra me XP Presenta tion Server, C itrix Meta fra me 1.x,  
a nd Linux Server versions  
Software Included  
HP C onnec tion Administra tor, Firefox Browser, C itrix IC A, rdesktop RDP c lient (for RDP),  
Altiris Deployment Solution 6.8 (c lient a gent) preinsta lled.  
Termina l Emula tion softwa re re-development for fina nc e system.  
Printing: support sc reen print, tra nspa rent print , 4 a uxilia ry seria l ports termina l  
emula tion & G ra phic displa y  
Fla sh Pla yer support, txtpa d , c ontrol pa nel support  
C hinese input: Pinyin, Wu bi, Qu wei  
Note: Altiris Deployment Solution (ma na gement c onsole) a va ila ble a s free downloa d  
from Altiris a t: www.a ltiris.c om/hptc  
Other softwa re a va ila ble a s a dd-ons (see www.hp.c om/support for la test list of  
a va ila ble a dd-ons)  
Languages  
C hinese only  
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Dimensions H x W x D Without stand  
235 x 60 x 195 mm  
1.9 kg  
(a pproxima te)  
Weight (a pproxima te) Without stand  
Environmental  
Temperature range on 50° to 104° F (10° to 40° C )  
Temperature range off -22° to 140° F (-30° to 60° C )  
Humidity  
20% to 80% c ondensing  
10% to 95% non-c ondensing  
Power1  
Worldwide a uto-sensing 100-240 VAC , 50-60 Hz, energy-sa vin  
a utoma tic power-down, surge-tolera nt, 65-wa tt power supp  
Regulatory  
Compliance  
Agency  
Environmental  
ESD  
C C C a nd C B  
C EC P (to be a pplied a fter produc t la unc h), ROHS c omplia n  
4KV for Direc t, a nd 8KV for disc ha rge  
Warranty  
Three-yea r limited ha rdwa re wa rra nty  
NOTE: C erta in restric tions a pply. C onsult the HP C ustomer Support C enter for deta ils  
Emulations  
Emulation  
ANSI  
Terminal ID  
C T100  
VT100  
Xenix  
VT100, VT220, VT382  
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6-4  
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Appendix A  
HP Compaq vc4815 系列串口定义用户指南  
HP Compaq vc4815终端默认具有4个串口,分别为串口一、串口二,串口三、  
串口四。  
辅口2  
(串口3)  
TTL)  
主口  
辅口1  
(串口2)  
辅口3  
(串口4)  
(串口1)  
引脚  
1脚  
DCD/ +5V  
RXD  
+5V / DCD  
RXD  
+5V / DCD  
RXD/TXD  
TXD/RXD  
NC/DTR  
+5V / DCD  
RXD  
2脚  
3脚  
4脚  
5脚  
6脚  
7脚  
8脚  
TXD  
TXD  
TXD  
DTR/ +12V DTR/+5V /+12V  
DTR/+5V /+12V  
GND  
GND  
DSR  
GND  
DSR  
GND  
NC/DSR  
DSR  
RTS/+12V  
RTS/+12V  
CTS  
NC/RTS  
RTS/+12V  
CTS  
CTS/RXD  
TTL)  
RI/TXD  
RXD/TXD(TTL)  
RI  
TXD/RXD(TTL)  
RI  
9脚  
TTL)  
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HP Compaq vc4815终端默认出厂设置  
主口  
辅口2  
(串口3)  
TTL)  
辅口1  
(串口2)  
辅口3  
(串口4)  
(串口1)  
引脚  
1脚  
DCD  
RXD  
TXD  
DTR  
GND  
DSR  
RTS  
CTS  
RI  
DCD  
RXD  
TXD  
DTR  
GND  
DSR  
RTS  
CTS  
RI  
DCD  
RXD  
TXD  
NC  
DCD  
RXD  
TXD  
DTR  
GND  
DSR  
RTS  
CTS  
RI  
2脚  
3脚  
4脚  
5脚  
6脚  
7脚  
8脚  
9脚  
GND  
NC  
NC  
RXD  
TXD  
注:辅口223脚为RS23289脚为TTL  
主串一的1脚可以提供+5V供电,89脚可跳选为RXD/TXDTTL模式  
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主口(串口1)定义:  
主口  
(串口1)  
引脚  
1脚  
DCD/ +5V  
RXD  
2脚  
3脚  
4脚  
5脚  
6脚  
7脚  
8脚  
TXD  
DTR/ +12V  
GND  
DSR  
RTS/+12V  
CTS/RXD  
TTL)  
RI/TXD  
9脚  
TTL)  
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跳线器默认如上图所示  
COMA_JP1:更改跳线器将其置左(2连接3),可为主口(串口1)的1脚取+5V  
COMA_JP2:更改跳线器将其置左(2连接3),可为主口(串口1)的4脚取+12V  
COMA_JP3:更改跳线器将其置左(2连接3),可为主口(串口1)的7脚取+12V  
COMA_JP4:更改跳线器将其置左(2连接3),可为主口(串口1)的8脚取RXD  
TTL电平)  
COMA_JP5:更改跳线器将其置左(2连接3),可为主口(串口1)的8脚取TXD  
TTL电平)  
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辅口2(串口3)(TTL)定义:  
辅口2  
(串口3)  
TTL)  
引脚  
1脚  
+5V / DCD  
RXD/TXD  
TXD/RXD  
NC/DTR  
2脚  
3脚  
4脚  
5脚  
6脚  
7脚  
8脚  
9脚  
GND  
NC/DSR  
NC/RTS  
RXD/TXD(TTL)  
TXD/RXD(TTL)  
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跳线器默认如上图所示  
COMB_JP1:更改跳线器将其置右(2连接3),可为辅口2(串口3)(TTL)1脚取  
+5V  
COMB_JP2:更改跳线器将其置左(2连接3),可为辅口2(串口3)(TTL)2脚取  
TXD(RS232)信号  
COMB_JP3:更改跳线器将其置左(2连接3),可为辅口2(串口3)(TTL)3脚取  
RXD(RS232)信号  
COMB_JP4改跳线器将其置左(2连接3)为辅口2(串口3)(TTL)8脚取TXD  
TTL电平)信号  
COMB_JP5改跳线器将其置左(2连接3)为辅口2(串口3)(TTL)9脚取RXD  
TTL电平)信号  
COMB_JP6上跳线器 (1连接2)为辅口2(串口3)(TTL)4脚取DTR (RS232)  
信号  
COMB_JP7上跳线器 (1连接2)为辅口2(串口3)(TTL)6脚取RTS (RS232)  
信号  
COMB_JP8上跳线器 (1连接2)为辅口2(串口3)(TTL)7脚取DSR (RS232)  
信号  
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辅口1(串口2)与  
辅口3(串口4)定义:  
辅口1  
辅口3  
(串口2)  
(串口4)  
引脚  
1脚  
+5V / DCD  
RXD  
+5V / DCD  
RXD  
2脚  
3脚  
4脚  
5脚  
6脚  
7脚  
8脚  
9脚  
TXD  
TXD  
DTR/+5V /+12V DTR/+5V /+12V  
GND  
DSR  
GND  
DSR  
RTS/+12V  
CTS  
RTS/+12V  
CTS  
RI  
RI  
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跳线器默认如上图所示  
COMC_JP1:更改跳线器将其置下(2连接3),可为辅口1(串口2)的1脚取+5V  
COMC_JP2:更改跳线器将其置下(2连接3),可为辅口1(串口2)的7脚取+12V  
COMCD_JP1:  
COMCD_JP1  
辅口14脚  
辅口4 4脚  
DTR  
7连接9  
8连接10  
+5V  
5连接7  
6连接8  
+5V  
3连接5  
4连接6  
+12V  
1连接3  
2连接4  
COMD_JP1:更改跳线器将其置下(2连接3),可为辅口3(串口4)的1脚取+5V  
COMD_JP2:更改跳线器将其置下(2连接3),可为辅口3(串口4)的7脚取+12V  
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