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What are the main features of the HP Thermal Receipt Printers?
The HP Thermal Receipt Printers features include:
• Thermal printing technology that prevents changing a printer ribbon and cartridge
• Powered USB interface model with USB power cable provided or serial/USB interface model with separate power cable provided
• Snap open receipt cover and drop-in paper loading
• Software generated indicator beeps
• LED status indicator
• 8 MB flash memory, history EEROM, 4k buffer
• 8 dots/mm print resolution with up to 250 mm/second (A799) or 350 mm/second (A799 II) throughput speed
• Selectable 44 (standard) or 56 (compressed) or 64 (compressed, select models and languages only) columns of print on 80 mm wide thermal paper
• Paper low and paper out sensor
• Software and product documentation provided at http://www.hp.com
What are the user controls on the HP Thermal Receipt Printers?
The main user controls are:
1. **Receipt cover:** Snap opens to easily drop the paper roll in place.
2. **Status LED:** The green LED indicates basic information about the printer status. A steady green light indicates the printer is on and operating normally. A flashing LED indicates the printer needs operator assistance.
3. **Paper feed button:** During normal use, the paper feed button advances the paper. It is also used to access the configuration menu.
NOTE: A single beep indicates the printer has successfully completed its startup routine. It should beep after being powered up or reset. If the printer beeps twice, it may be experiencing a problem.
What are the rear connectors on the Powered USB model (A799)?
1. **USB power connector:** Connects the printer to the POS computer and provides power to the printer.
2. **Configuration switch (DIP switch 1):** Allows you to change the configuration settings of the printer.
3. **Cash drawer connector:** Connects the printer to the cash drawer.
4. **Connector cover:** Provides protection and strain relief for the printer connectors and cables. This cover should remain on the printer and cables routed as described in Chapter 2.
What are the rear connectors on the Serial/USB model (A799)?
1. **USB connector:** Connects the printer to the POS computer.
2. **Serial connector:** Connects the printer to the POS computer.
3. **Power connector:** Connects the printer to the POS computer for power.
4. **Configuration switch (DIP switch 1):** Allows you to change the configuration settings of the printer.
5. **Cash drawer connector:** Connects the printer to the cash drawer.
6. **Connector cover:** Provides protection and strain relief for the printer connectors and cables. This cover should remain on the printer and cables routed as described in Chapter 2.
What are the rear connectors on the Powered USB model (A799 II)?
1. **USB power connector:** Connects the printer to the POS computer and provides power to the printer.
2. **Cash drawer connector:** Connects the printer to the cash drawer.
3. **Connector cover:** Provides protection and strain relief for the printer connectors and cables. This cover should remain on the printer and cables routed as described in Chapter 2.
What are the rear connectors on the Serial/USB model (A799 II)?
1. **Serial connector:** Connects the printer to the POS computer.
2. **USB connector:** Connects the printer to the POS computer.
3. **Power connector:** Connects the printer to the POS computer for power.
4. **Cash drawer connector:** Connects the printer to the cash drawer.
5. **Connector cover:** Provides protection and strain relief for the printer connectors and cables. This cover should remain on the printer and cables routed as described in Chapter 2.
What are the rear connectors on the Ethernet/USB model (A799 II)?
1. **Ethernet connector:** Connects the printer to the LAN.
2. **USB connector:** Connects the printer to the POS computer.
3. **Power connector:** Connects the printer to the POS computer for power.
4. **Cash drawer connector:** Connects the printer to the cash drawer.
5. **Connector cover:** Provides protection and strain relief for the printer connectors and cables. This cover should remain on the printer and cables routed as described in Chapter 2.
What should be included in the packing list when receiving the printer?
Before installation, check that all the items listed below have been shipped:
• Printer
• Starter roll of receipt paper
• Test printout
• Serial model:
– USB cable
– Serial cable
– Power supply and cable
• Ethernet model:
– USB cable
– Ethernet cable
– Power supply and cable
• PUSB model:
– USB power cable
Save the packing materials in case you need to repack the printer for shipping or storage.
How do I load or change the receipt paper?
Before setting up the receipt printer, ensure power is turned off to the printer, POS computer and other attached devices.
CAUTION: You must use qualified paper rolls with the HP printers. Using unqualified paper may void the warranty.
The same procedure will be used to change the paper as you load it during installation.
1. Open the receipt cover by pushing up on each side of the cover until it unsnaps.
2. Loading: Remove the test printout and starter roll thermal paper. Slide the supports off the roll.
Changing: Remove the used paper roll.
3. Tear a clean edge on the new receipt paper roll, making sure the tape has been completely removed.
4. Place the receipt paper into the paper compartment so it **unrolls from the bottom**. Leave a few inches of paper sticking out of the printer.
5. While holding the paper in place, close the receipt cover. To test that the paper is loaded correctly, advance the paper with the paper feed button.
NOTE: If the paper jams, be sure the roll is inserted correctly. Refer to the illustration in the PDF for proper paper orientation.
6. Tear the excess paper off against the blade in the cover.
How can I adjust the paper low setting?
The amount of paper left on the roll when the “paper low” indication is given by the printer should be approximately 5-20 feet/1.5-6.1 meters. If too much paper is left, there is an adjustable setting in the configuration menu that can be modified. For instruction on entering the configuration menu, refer to the steps for operating the printer. In the configuration menu, enter the Hardware Options section and vary the “paper low extension” setting. The setting chosen will decrease the amount of footage at paper low.
How do I connect the cables to the printer?
NOTE: Place the printer on a level surface and position it in a location that allows access to cables, room to open the cover and away from traffic areas to limit the chance of being bumped or damaged.
CAUTION: Connect cables to the printer before turning on power to the POS computer. The POS computer should always be turned off before connecting the communication cable.
1. Turn off the POS computer.
2. Open the connector cover on the rear of the printer to locate the connectors.
3. Connect Communication and Power Cables:
• **For printers with a USB power connector (A799, A799 II Powered USB models):**
a. Plug the printer end of the USB power cable into the USB power connector on the printer. Plug the other end of the USB power cable into the 24V powered USB connector on the POS computer.
b. Route the USB power cable from the printer through the strain relief tab on the connector cover of the printer.
• **For printers with serial, USB, and power connectors (A799, A799 II Serial/USB models):**
a. Plug the printer end of the USB cable into the USB connector or the serial cable into the serial connector on the printer. Plug the other end of the cable into the appropriate connector on the POS computer.
NOTE: You can use either the USB cable or the serial cable as the data interface with the POS computer. Do not use both.
If using the serial interface, connect the 9-pin female to 9-pin female null modem serial cable between the printer and POS computer. Legacy serial printer models may not include a cable.
b. Plug the printer end of the power cable into the power connector on the printer. Plug the other end of the power cable into the 24V powered USB connector on the POS computer.
c. Route the power cable and the USB cable or serial cable from the printer through the strain relief tab on the connector cover of the printer.
• **For printers with Ethernet, USB, and power connectors (A799 II Ethernet/USB model):**
a. Plug the Ethernet cable from the LAN into the Ethernet connector on the printer. Plug the printer end of the USB cable into the USB connector on the printer and plug the other end of the cable into the appropriate connector on the POS computer.
NOTE: You can use both the Ethernet cable and the USB cable as the data interface with the POS computer. When both Ethernet and USB cables are plugged into the printer, the communication defaults to Ethernet after several minutes of the USB being inactive.
b. Plug the cable with the DIN connector into the power connector on the printer. Plug the A/C power cord into the other end of the power supply. Plug the A/C power cord into an electrical receptacle.
c. Route the power cable, Ethernet cable, and USB cable from the printer through the strain relief tab on the connector cover of the printer.
4. Plug the cash drawer cable into the cash drawer connector (RJ12) on the printer and the other end of the cable (RJ45) into the interface connector on the cash drawer.
NOTE: The cash drawer cable is not included with the printer.
5. Route the cash drawer cable up and through the strain clip above the connector and through the opening in the connector cover when closed.
6. Close the connector cover on the rear of the printer, ensuring that all cables are aligned with the slots provided for each connector.
How do I turn on the printer?
After connecting the cables to the printer and POS computer, turn on the POS computer. If the Found New Hardware Wizard pops up, click the Cancel button.
The receipt printer will beep and the green LED on the top cover will light up initializing the printer.
How do I install the printer drivers?
Depending on your POS computer’s operating system, install the OPOS drivers or the JPOS drivers.
To download the drivers, go to http://www.hp.com/support. Select your country or region, select Drivers & Downloads, and then enter the name of your retail point of sale system in the Find by Product search field. Click Go.
What do the Ethernet terms mean for the printer setup?
| Term | Description |
|---|---|
| MAC address | A unique hexadecimal serial number assigned to each Ethernet network device to identify it on the network. Each printer communication board gets a unique number from an assigned range of numbers. Numbers start with: 00:E0:70. |
| IP address | A unique number that identifies each node on a network and to specify routing information. Each node must be assigned a unique IP address. The address is made up of two distinct parts: a network ID, which identifies the network; and a host ID, which is typically assigned by the administrator. These addresses are typically represented in dotted-decimal notation, such as 138.58.11.27. The default setting is: 192.0.0.192 |
| Net mask | A series of bits designed to “mask” certain portions of an IP address and is used primarily for subnetting. The standard netmask for a Class C network is 255.255.255.0, with the last octet (.0) directing the host to look there for the machine number. The rest (255) is the network number. The default setting is 0.0.0.0. The net mask is used to determine if a gateway is needed to reach an address. |
| Gateway | A hardware or software set-up that translates between two dissimilar protocols. A gateway, even when the printer is on another subnet, is not always needed. The printer initiates no connection and obtains the gateway address from the host packets. The default setting is 0.0.0.0 (none) |
| HTTP | An application protocol for connection to the Internet. With HTTP, the printer’s Ethernet settings can be configured with a Web GUI. The HTTP server listens on port 80. The default setting is to have HTTP enabled. |
| Raw TCP/IP Port | Enables the printer to listen for raw TCP/IP communications. Specifying this to zero will disable raw TCP/IP connections. Default value is 9001 enabled. |
| DHCP | Allows “leasing” of IP address for a limited time. If no IP address is found at start-up, the printer waits for two more minutes. If no address is found after two minutes DHCP will automatically set the default IP address. Default: enabled |
How do I reset the Ethernet printer to default settings?
To return the printer to the default settings, put the printer in the boot mode and hold down the feed switch until you hear the high-low-high tones (about 10 seconds).
The default settings are:
• DHCP Enabled
• Default IP 192.0.0.192 (in use after 2 minute Bootp time-out)
• Net mask of 0.0.0.0 (causes default mask of selected IP to be used)
• HTTP Server Port 80 active
• Raw TCP/IP Port 9001 active
How do I test the printer and run diagnostics?
The printer will arrive for installation pre-configured. The printer’s current configuration appears on the test (diagnostics) printout. If the printer is functioning normally, it will beep once. If it responds differently, refer to Troubleshooting or contact support.
To run a new diagnostics test:
1. Be sure paper is in the printer.
2. Open the receipt cover.
3. Press and hold the paper feed button.
4. Close the receipt cover, continually holding the paper feed button until the configuration printout begins.
The printout will detail the current configuration.
What character sets and code pages are available, and how can I extend them?
The following character sets and code pages are available for this printer. Most models come with the code preinstalled. To confirm which code pages are resident, print out the Diagnostic form. To download code pages that are not currently resident, go to HP support website at http://www.hp.com/support.
Available Code Pages:
• Code Page 437 US English
• Code Page 737 Greek
• Code Page 850 Multilingual
• Code Page 852 Central Europe
• Code Page 857 Turkish
• Code Page 858 Eurosymbol
• Code Page 860 Portuguese
• Code Page 862 Hebrew
• Code Page 863 French Canadian
• Code Page 865 Nordic
• Code Page 866 Cyrillic
• Code Page 874 Thai
• Code Page 932 Kanji
• Code Page 936 Simplified Chinese
• Code Page 950 Traditional Chinese
• Code Page 949 Korean (Hangul)
• Code Page 1251 Cyrillic
• Code Page 1252 Windows Latin 1
• Code Page 1255 Hebrew
• Code Page 1256 Arabic
• Code Page KZ-1048 Kazakhstan
How do I enter the configuration mode for model A799?
NOTE: The printer is usually shipped pre-configured. HP does not recommend that users change the configuration unless necessary. Use the preset configuration from the shipped test printout as a default if issues arise.
1. Turn off power to the printer.
2. Open the rear connector cover.
3. Set DIP switch 1 to the ON position (down). DIP switch 2 should be in the OFF position (up).
4. Be sure the receipt paper is loaded in the printer.
5. Close the receipt cover.
6. Turn on power to the printer and immediately press and hold the paper feed button until the configuration printout begins.
7. The printer beeps, then prints the diagnostics form and the configuration main menu.
8. The printer pauses and waits for a main menu selection. To communicate, press the paper feed button using either short or long clicks. Use a long click for “yes” (more than one second) and a short click for “no.” Follow the printed instructions.
9. Continue through menu selections until prompted, **Save New Parameters?**. Select “Yes” or “No.”
a. If you wish to save, select **Yes**, then return DIP Switch 1 to the OFF position (up).
b. Open the receipt cover.
c. Press and hold the paper feed button while closing the receipt cover.
d. The diagnostic printout verifies your new settings.
10. If you would like to continue configuring, select **No**. The printer returns to the configuration menu.
How do I enter the configuration mode for model A799 II?
1. Turn off power to the printer.
2. Open the rear connector cover.
3. Be sure the receipt paper is loaded in the printer.
4. Close the receipt cover.
5. Turn on power to the printer and immediately press and hold the paper feed button until the configuration printout begins.
6. The printer beeps, then prints the diagnostics form and the configuration main menu.
7. Press the paper feed button within two seconds to enter the configuration main menu.
8. The printer pauses and waits for a main menu selection. To communicate, press the paper feed button using either short or long clicks. Use a long click for “yes” (more than one second) and a short click for “no.” Follow the printed instructions.
9. Continue through menu selections until prompted, **Save New Parameters?**. Select “Yes” or “No.”
a. Reset the printer.
b. Open the receipt cover.
c. Press and hold the paper feed button while closing the receipt cover.
d. The diagnostic printout verifies your new settings.
How do I change the monochrome paper print density?
This function adjusts the energy level of the printhead or density of the printout. An adjustment should only be made when necessary. The factory setting is 100%.
CAUTION: Choose an energy level no higher than necessary to achieve a dark printout. Failure to observe this rule may result in a printer service call or voiding of the printer warranty. Running at a higher energy level will reduce the printhead life.
When the printer prints high-density print lines (text or graphics), it automatically slows down.
To change the print density:
1. Enter the configuration menu (refer to instructions for your model A799 or A799 II).
2. Select **Set Hardware Options** from the main menu.
Printer responds, **Hardware Options Menu**, and when scrolled prompts, **Set Print Density?**.
3. Select **Yes**.
A warning is printed, followed by the density adjustment selections.
Using the paper feed button, enter clicks for selection, then hold button down at least 1 second to validate.
How do I change the color print density?
This function adjusts the energy level of the printhead to darken color printing or adjust for paper variations. An adjustment should only be made when necessary. The factory setting is 80%.
CAUTION: Choose an energy level no higher than necessary to achieve a dark printout. Failure to observe this rule may result in a printer service call or voiding of the printer warranty. Running at a higher energy level will reduce the printhead life.
When the printer prints high-density color print lines (text or graphics), it automatically slows down.
To change the color density:
1. Enter the configuration menu (refer to instructions for your model A799 or A799 II).
2. Select **Set Hardware Options** from the main menu.
Printer responds, **Hardware Options Menu**, and when scrolled prompts, **Set Color Density Adjustment?**.
3. Select **Yes**.
A warning is printed, followed by the density adjustment selections.
Using the paper feed button, enter clicks for selection, then hold button down at least 1 second to validate.
When should I change the receipt paper? What are the indicators?
Change the paper when it is near the end of the roll or out. When the paper is low, monitor usage to avoid running out part way through a transaction. When the paper is out, load a new roll immediately or data may be lost.
**When paper is low:**
• Colored stripe appears on the receipt paper (if paper is purchased with stripe) and indicates enough paper remains for a small transaction.
• The green LED flashes slowly indicating that approximately 4.5 meters/15 feet of paper remains. If too much paper is left, the “paper low” setting can be adjusted in the configuration menu by changing the “paper low” extension setting.
**When paper is out:**
• Green LED flashes quickly indicating the paper must be installed.
CAUTION: Do not try to operate the printer or POS computer if the printer runs out of paper. The printer may continue to accept data from the POS computer even though it is unable to print. Data may be lost as a result.
NOTE: When changing the type of paper being used (e.g., Monochrome to Two-color), you must set the printer to the new paper type. This is done through the command `1D 81 m n` or through the configuration menu. Paper type grades are Type 0: Monochrome and Type 4: Two-color.
How is the printhead setting configured?
The printhead energy rating and printer setting must match. The setting is preconfigured from the factory but may require changing if service to the thermal mechanism is required. The “Head Setting” on the diagnostic printout must match the letter marked on the front right of the thermal mechanism. Whenever the thermal mechanism is replaced, if the letter on the mechanism is different from the head setting, you must enter the configuration menu and set the printhead to match. Contact an HP authorized service provider to replace the thermal mechanism.
How can I prevent printhead overheating?
There are restrictions on the duty cycle due to heat generated by the thermal printhead when printing solid blocks. Restrictions depend on ambient temperature, the percentage of time (measured against one minute) of continuous solid printing, and the amount of coverage.
Keep in mind that ambient temperature may be affected by factors such as direct exposure to sun or close proximity to heating elements.
CAUTION: When the duty cycle exceeds the limits shown in the table below, the receipt printhead will heat up and shut down. This may damage the printhead.
To avoid this problem, do one or a combination of the following:
1. Reduce the amount of dot coverage.
2. Reduce the time of continuous solid printing.
3. Reduce the ambient temperature.
**Allowable duty cycle (measured over one minute of continuous printing)**
| Amount of Dot Coverage | Ambient Temperature | ||
|---|---|---|---|
| 25°C | 35°C | 50°C | |
| 20% | 100%* | 50%* | 20%* |
| 40% | 50%* | 25%* | 10%* |
| 100% | 20%* | 10%* | 4%* |
*Duty Cycle – Percentage of time that the specified “Amount of Solid Coverage” can be printed during a one minute period of time. Example: at 20% solid coverage, 35° C temperature, a 50% duty cycle is to be used, resulting in 30 seconds of printing and 30 seconds without printing.
**For reference:**
• A typical receipt with text (contains some blank spaces) is approximately 12% dot coverage.
• A full line of text characters (every cell on the line has a character in it) is approximately 25% dot coverage.
• Graphics are approximately 40% dot coverage.
• Barcodes are approximately 50% dot coverage.
• A solid black line is 100% dot coverage.
How do I clean the printer?
Clean the outside of the cabinet as needed to remove dust and finger marks. Clean the printer cabinet and paper bucket with a clean, damp cloth moistened with Isopropyl alcohol.
CAUTION: DO NOT use denatured alcohol or any other form of alcohol other than Isopropyl alcohol to clean the printer cabinet or paper bucket.
The cabinet materials and finish are durable and resistant to cleaning solutions, cooking oils, lubricants, ultraviolet light, and fuels.
How do I clean the thermal printhead?
CAUTION: Do not clean the inside of the printer with any cleaner. Do not allow cleaning spray to come in contact with the thermal printhead. Damage to the internal electronics or thermal printhead could occur.
NOTE: The thermal printhead does not normally require cleaning when recommended paper grades are used. If non-recommended paper is used over an extended period, attempting to clean the printhead will have little effect on the print quality.
CAUTION: Using non-recommended paper over an extended period of time can result in printhead failure. HP is not responsible for printhead failure due to non-recommended paper.
1. Turn off the printer and POS computer.
2. Unplug the printer from the POS computer and the cash drawer, if connected.
3. Wipe the printhead with a cotton swab moistened with Isopropyl alcohol.
CAUTION: DO NOT use any other form of cleaner other than Isopropyl alcohol to clean the printhead or it will destroy the printhead.
CAUTION: DO NOT use Isopropyl alcohol to clean any internal parts of the printer other than the printhead. Damage will occur.
If spotty or light printing problems persist after cleaning the thermal printhead, the entire thermal mechanism may need to be replaced.
What diagnostic tests does the printer perform?
The printer performs three primary diagnostic tests:
• **Startup diagnostics:** Performed during the printer’s startup cycle.
• **Runtime diagnostics:** Performed during normal operation.
• **Remote diagnostics:** Maintained during normal operation and reported in the print test.
What happens during startup diagnostics and what do the failure codes mean?
When the printer receives power or performs a hardware reset, it automatically performs startup diagnostics (level 0 diagnostics). The printer:
• Turns off the motors
• Performs boot CR check of the firmware ROM, tests external SRAM, tests EEPROM, and tests main program CRC
If a failure occurs, startup diagnostics stop; the printer beeps and the LED flashes a set number of times, indicating the nature of the failure:
| LED Behavior | Failure |
|---|---|
| One blink | Boot CRC error |
| Two blinks | RAM failure |
| Three blinks | EEPROM failure |
| Four blinks | Memory initialization failure |
To resolve startup failures:
• Check if paper is present
• Return the knife to the home position; failure causes a fault condition
• Check if the rear cover is closed; failure does not interrupt the startup cycle
When startup diagnostics are complete, the printer makes a two-tone beep (low then high frequency), the paper feed button is enabled, and the printer is ready for normal operation.
What conditions are checked during runtime diagnostics and how are they indicated?
Runtime diagnostics (level 2 diagnostics) run during normal printer operation. When the following conditions occur, the printer automatically turns off the appropriate motors and disables printing to prevent damage:
• Paper out
• Rear cover open
• Knife unable to home
• Printhead too hot
• Voltages out of range
The LED on the operator panel signals these conditions and indicates printer state or mode:
| LED Behavior | Printer Status |
|---|---|
| Off | No power |
| Fast blink | Firmware download |
| Fast blink | Level 0 diagnostics (occurs at power on, and on reset) |
| Slow blink | Paper low, temperature error or voltage error |
| Steady on | All other issues (Operating normally) |
What information is tracked by remote diagnostics?
Remote diagnostics (level 3 diagnostics) keep track of the following tallies and print them on the receipt during the print test. These can determine the printer’s state of health:
• Model number
• Serial number
• CRC number
• Number of lines printed
• Number of knife cuts
• Number of hours the printer has been on
• Number of flash cycles
• Number of cutter jams
• Number of times the cover is opened
• Maximum temperature reached
How do I troubleshoot common printer problems?
| Problem | Possible Cause | Solution |
|---|---|---|
| Green LED, quick continuous flashing. | Paper is out. Receipt cover open. Knife unable to home. |
Load a new paper roll. Close the cover. Stop using the printer. Check the knife to see if it needs to be replaced. Contact your regional HP authorized service provider. |
| Green LED, slow steady flashing. | Paper is low (if paper low sensor is installed). Continuous printing of graphics has overheated the printhead. Other problems may be indicated. |
Load a new paper roll. Reduce the demand on the printer. Stop using the printer. Contact your regional HP authorized service provider. |
| Continuous flashing of LED | DIP switch is in ON position, indicating flash download mode. | Put the DIP switch in the OFF position for normal operation. |
| Printer beeps (two-tone – low frequency, high frequency). | Printer has been turned on and is ready to operate. | No action required. |
| Printer beeps and flashes green LED in various combinations. | Indicates serious conditions. | Stop using the printer. Contact your regional HP authorized service provider. |
| Colored stripe is on the receipt. | Paper is low. | Change the paper roll. |
| Double beep, double LED flash. | SRAM test failure. | Run the startup diagnostics again. If this does not work, contact your regional HP authorized service provider. |
| Triple beep, triple LED flash. | EEPROM test failure. | Run the startup diagnostics again. If this does not work, contact your regional HP authorized service provider. |
| Two-tone beep (high frequency, low frequency.) | Main program CRC test failure. | Run the startup diagnostics again. If this does not work, contact your regional HP authorized service provider. |
| Receipt does not come out all the way. | Paper is jammed. | Open the receipt cover, inspect the knife, and clear the jammed paper. |
| Printer starts to print, but stops while the receipt is being printed. | Paper is jammed. | Open the receipt cover, inspect the knife, and clear the jammed paper. |
| Receipt is not cut. | Paper is jammed. The knife is not enabled. |
Open the receipt cover, inspect the knife, and clear the jammed paper. Enable the knife in the configuration menu. |
| Print is light or spotty. | Paper roll is loaded incorrectly. Thermal printhead is dirty. |
Check that the paper is loaded properly. Clean thermal printhead with Isopropyl alcohol. Use recommended thermal receipt paper. (NOTE: If non-recommended paper caused dirty printhead, cleaning may have little effect). |
| Color print is light. | Variations in paper. | Increase energy level of printhead in “Color Density Adj” of the printer configuration menu. |
| Inconsistent printing, no two-color print. | Paper type used and paper type setting do not match. | Print the diagnostic form and verify setting paper type setting to type 0, 1, 4, or 5. |
| Vertical column of print is missing. | Printhead is defective or indicates a serious condition with the printer electronics. | Stop using the printer. Contact your regional HP authorized service provider. |
| One side of the receipt is missing. | Printhead is defective or indicates a serious condition with the printer electronics. | Stop using the printer. Contact your regional HP authorized service provider. |
| Printout has missing characters or wrong characters. | Wrong type of serial cable is being used. | You must use a null modem serial cable for the printer to function properly. |
| Printer does not function when turned on. | The printer is not plugged in. Receipt cover is not fully closed. DIP switch 2 has been left in the ON position. Printer is not correctly configured. Power supply voltage is out of range. |
Check that printer cables are properly connected at both ends. Check that the POS computer is turned on. Close and latch the receipt cover. Return DIP switch 2 to the OFF (up) position. Check the printer’s configuration and reconfigure if necessary. Measure the voltage with an AC voltmeter and check against the power supply label: voltage should be 24V +/-10%. |
| Printer stops functioning. | Printhead has overheated (environment too hot or continuous graphics). Printhead has gotten too cool (environment too cold). Interrupted data signal over USB connection. Faulty USB port. Faulty serial port. Wrong type of serial cable is being used. |
Adjust room temperature or move printer. Reduce demand. Adjust room temperature or move printer to warmer location. Ensure USB cable is not more than 5 meters long, no extensions; eliminate hubs. Plug cable into another USB port on the POS computer. Plug cable into another serial port on the POS computer. Use a null modem serial cable. |
| Printer goes off-line (red LED on USB connector is on or off). | USB or serial cable is not connected properly. | If printer does not auto-recover after 5-20 seconds, reconnect the USB or serial cable, reset the printer, reboot the POS computer, check that the USB or serial cable is properly connected at both ends. |
Where can I find product support?
For additional information, go to http://www.hp.com/support. Select your country or region, select Drivers & Downloads, and enter the name of your retail point of sale system in the Find by Product search field. Click Go.
If the information in the guide does not address your questions, contact support. For U.S. support, go to http://www.hp.com/go/contactHP. For worldwide support, go to http://welcome.hp.com/country/us/en/wwcontact_us.html.
Support options include:
• Chat online with an HP technician (NOTE: When support chat is not available in a particular language, it is available in English).
• Find support telephone numbers
• Locate an HP service center
What information should I have ready before calling technical support?
If you cannot solve a problem using the troubleshooting tips, you may need to call technical support. Contact your regional HP authorized service provider for HP Point of Sale System products. Have the following information available:
• Serial number of the HP accessory located on the label underneath the product
• Purchase date on invoice
• Spares part number located on the label underneath the product
• Condition under which the problem occurred
• Error messages received
• Hardware configuration
• Hardware and software you are using
How do I order replacement paper rolls?
To order paper rolls, contact your converter of choice. Refer to the Qualified paper grades section in the technical specifications for contact information and paper details.
What are the technical specifications of the HP Thermal Receipt Printer?
Printer Specifications
| Interface | Powered USB (some models) USB or Serial (some models) |
| Memory | 8 MB flash memory, 512KB RAM A799; 8MB RAM A799II |
| Operating Voltage | 24Vdc +/- 10% +5 volts for logic circuit |
| Power Consumption | 2.3 Amps maximum current draw |
| Operating Temperature | 5°C to 28°C (41°F to 82°F) 28°C to 45°C (82°F to 113°F) |
| Operating Humidity | 10% to 90% 5% to 40% |
| Storage Temperature | 10°C to 50°C (14°F to 122°F) |
| Storage Humidity | 5% to 90% |
| Transit Temperature | -40°C to 60°C (-40°F to 140°F) |
| Transit Humidity | 5% to 95% |
| Condensation | Condensation may occur when moved from cold to warm areas. Permits operation after drying out and stabilizing at room temperature. |
| Height | 134 mm (5.34″) |
| Width | 144 mm (5.66″) |
| Depth | 184 mm (7.24″) |
| Weight | 1.3 kg (2.9 lbs) |
Printing Specification
| Speed – Monochrome | 250 mm/sec (A799); 350 mm/sec (A799 II) |
| Two-color capability | Yes |
| Receipt – columns | 44/56 |
| Paper roll size | 80 mm x 90 mm |
| Paper low | Standard (out and low) |
| Resolution | 203 DPI |
| Knife | Standard (ceramic, rotary) |
What print modes are available for changing text appearance?
The appearance of text can be changed using the following available print modes:
• Standard
• Compressed
• Double high
• Double wide
• Upside down
• Rotated
• Underlined
• Bold
• Reverse
• Italic
• Scaled
• Strike-through
• Shading
What are the character sizes for standard and compressed modes?
**Standard:**
• 15.6 characters per inch
• 44 characters per line
• 13 x 24 dots cell size
**Compressed:**
• 20.3 characters per inch
• 56 characters per line
• 10 x 24 dots cell size
What are the specifications for the required thermal paper?
The printer requires qualified thermal paper with the following dimensions:
| Width | Diameter | Length |
|---|---|---|
| 80 ± 0.2 mm (3.15 ± 0.01 in.) | 90 mm max. (3.54 in.) | 98 meters (322 ft.) nominal |
These figures are based on a core diameter of 22 ± 0.5 mm (0.87 in.) outside, 11.5 ± 0.5 mm (0.45 in.) inside.
The paper must not be attached at the core. Use paper with a colored stripe at the end to indicate that the paper is running low, required when the printer is positioned vertically.
NOTE: When changing paper type, you will need to set the printer to that paper type by sending the “Set paper type” command (1D 81 m n) or by changing the paper type setting in the configuration menu.
What are the qualified monochrome (black ink) paper grades?
| Qualified Manufacturer | Paper Grade (Density) |
|---|---|
| Appleton Papers, Inc. (USA) 825 E. Wisconsin Avenue Appleton, WI Voice: (800)922-1729 Fax: (800)922-1712 |
Alpha 400-23 (Light) Alpha 800-24 (Standard) POS-Plus 600-24 (Light) Alpha 900-34 (Standard) |
| Kanzaki Specialty Papers (USA) 20 Cummings St. Ware, MA 01082-2002 Voice: (888)526-9254 Fax: (413)731-8864 |
P30023 (Light) P31023 (Standard) P35024 (Standard) P35032 (Standard) P39023 (Standard) P30521 (Standard) P30523 (Standard); P31523; P35532 |
| Jujo Thermal LTD. P.O. Box 92 FIN-27501 Kauttua, Finland Voice: (358)2-8393-2900 Fax: (358)2-3893-2419 |
AF50KS-E3 (Standard) AP62KS-E3 (Standard) |
| OJI Paper Company Ltd. 5-12-8 Ginza Chuo-ku Tokyo 104, Japan Voice: (81)3-5550-3076 Fax: (81)3-5550-2950 |
KF-60 (Standard) PD-170R (Light) PD-160R (Standard) |
| Koehler UK LTD. (GB) Voice: (44)1322-661010 |
KT55-F20 (Standard) |
| Mitsubishi Int’l Corp (USA) 520 Madison Ave. New York, New York 10022-4223 Voice: (212)605-2000 Fax: (212)605-2597 |
P-5035 (Light) T-8051 (Standard) TP-8065 (Standard) |
What are the qualified two-color paper grades?
| Qualified Manufacturer | Paper Grade (Density) |
|---|---|
| Kanzaki Specialty Papers (USA) 20 Cummings St. Ware, MA 01082-2002 Voice: (413)736-3216 Fax: (413)731-8864 |
P-310 RB (Red and Black) P-320 RB (Red and Black) P-320 BB (Blue and Black) P-320 GB (Green/Black) |
| Mitsubishi Int’l Corp (USA) 520 Madison Ave. New York, New York 10022-4223 Voice: (212)605-2000 Fax: (212)605-2597 |
PB-770 (Blue/Black) |
What are the print zone specifications for 80 mm paper?
Specifications of print zone for 80 mm paper:
• 576 dots (addressable) @ 8 dots/mm, centered on 80 mm
• Standard Mode minimum margins: 2.0 mm (0.079 inches)
• Top margin to manual tear-off: 17.8 mm (0.70 inches)
• Top margin to knife cut: 19.0 mm (0.75 inches)
• Paper Width = 80 mm (3.15 in.)
• Printable Zone, 576 Dots = 72 mm (2.835 in.)
• Nominal Margins, 4.25 mm (0.167 in.)
• 44 Standard Columns = 71.5 mm (2.815 in.)
• 56 Compressed Columns = 70 mm (2.756 in.)
How can I configure the Ethernet settings using commands?
The following commands set printer internal parameters for Ethernet operation. They can only be used in the Flash download (boot) mode (1B 5B 7D).
Restore default settings:
| Format | Value 1 | Value 2 | Value 3 |
|---|---|---|---|
| ASCII | US | BS | NUL |
| Hexadecimal | 1F | 08 | 00 |
| Decimal | 31 | 8 | 0 |
Restores Ethernet settings to preset values (IP: 192.0.0.192, Net mask: 0.0.0.0, Gateway: none, Raw TCP/IP port: 9001 active, HTTP port: 80 active, DHCP: enabled, Inactivity timeout: enabled, Keep alive pings: enabled).
Setting IP address:
| Format | Value 1 | Value 2 | Value 3 | n1 | n2 | n3 | n4 |
|---|---|---|---|---|---|---|---|
| ASCII | US | BS | SOH | n1 | n2 | n3 | n4 |
| Hexadecimal | 1F | 08 | 01 | n1 | n2 | n3 | n4 |
| Decimal | 31 | 8 | 1 | n1 | n2 | n3 | n4 |
Sets the IP address value specified by n1 to n4. Default: 192.0.0.192.
Setting Net Mask:
| Format | Value 1 | Value 2 | Value 3 | n1 | n2 | n3 | n4 |
|---|---|---|---|---|---|---|---|
| ASCII | US | BS | STX | n1 | n2 | n3 | n4 |
| Hexadecimal | 1F | 08 | 02 | n1 | n2 | n3 | n4 |
| Decimal | 31 | 8 | 2 | n1 | n2 | n3 | n4 |
Sets the Net Mask value specified by n1 to n4. Default: 0.0.0.0.
Setting the Gateway:
| Format | Value 1 | Value 2 | Value 3 | n1 | n2 | n3 | n4 |
|---|---|---|---|---|---|---|---|
| ASCII | US | BS | ETX | n1 | n2 | n3 | n4 |
| Hexadecimal | 1F | 08 | 03 | n1 | n2 | n3 | n4 |
| Decimal | 31 | 8 | 3 | n1 | n2 | n3 | n4 |
Sets the gateway IP address value specified by n1 to n4. Default: none. Not always needed.
Setting raw TCP/IP port:
| Format | Value 1 | Value 2 | Value 3 | n1 | n2 |
|---|---|---|---|---|---|
| ASCII | US | BS | EOT | n1 | n2 |
| Hexadecimal | 1F | 08 | 04 | n1 | n2 |
| Decimal | 31 | 8 | 4 | n1 | n2 |
Sets the port for raw TCP/IP communications. n1: Low order byte, n2: High order byte. Default: Port = 9001. Setting port to 0 disables.
DHCP (auto-configuration):
| Format | Value 1 | Value 2 | Value 3 | n1 |
|---|---|---|---|---|
| ASCII | US | BS | BS | n1 |
| Hexadecimal | 1F | 08 | 08 | n1 |
| Decimal | 31 | 8 | 8 | n1 |
Enables (n1=1) or disables (n1=0) DHCP. Default: enabled. If enabled, tries to obtain IP via DHCP at power-up.
Inactivity timeout:
| Format | Value 1 | Value 2 | Value 3 | n1 |
|---|---|---|---|---|
| ASCII | US | BS | HT | n1 |
| Hexadecimal | 1F | 08 | 09 | n1 |
| Decimal | 31 | 8 | 9 | n1 |
Enables (n1=1) or disables (n1=0) resetting of open TCP ports after five (5) minutes inactivity. Default: enabled.
Keep alive pings:
| Format | Value 1 | Value 2 | Value 3 | n1 |
|---|---|---|---|---|
| ASCII | US | BS | LF | n1 |
| Hexadecimal | 1F | 08 | 0A | n1 |
| Decimal | 31 | 8 | 10 | n1 |
Enables (n1=1) or disables (n1=0) sending of keep alive pings (self arps). May be required for smart hubs. If enabled, sent every ten (10) minutes. Default: enabled.
Set HTTP Port:
| Format | Value 1 | Value 2 | Value 3 | n1 | n2 |
|---|---|---|---|---|---|
| ASCII | US | BS | SO | n1 | n2 |
| Hexadecimal | 1F | 08 | 0E | n1 | n2 |
| Decimal | 31 | 8 | 14 | n1 | n2 |
Sets the port where the HTTP server will listen. n1: Low order byte, n2: High order byte. Default: Port = 80. Setting port to 0 disables HTTP communications.
How do I install an Ethernet printer on a network with Windows 7/8?
NOTE: Refer to the programming guide for instructions on installing an Ethernet printer on a network with OPOS/JPOS.
1. Plug the printer into the network and turn power on.
2. Run a diagnostic sample and get the printer IP address. If there is a problem with the IP address then reset the printer communication parameters and try again.
3. Make sure Raw TCP/IP is enabled and the port is set (Default: 9001). If using a web server, ensure HTTP is enabled and the port is also set (Default: 80). (Default configuration is sufficient for installation).
4. Go to the Control Panel, then Devices and Printers.
5. Choose Add a Printer, Add a Local printer (do not choose network printer), and choose Create a New Port. Select Standard TCP/IP Port and click next.
6. Input the printer IP address in the Hostname or IP address box. Uncheck Query the Printer. In the next screen, Windows will attempt to detect the TCP/IP port and then ask for additional port information. Select Generic Network Card.
7. At the Install Printer Driver Window, choose Have Disk and Browse to the appropriate mini driver location and select the appropriate mini driver.
8. Name the printer and select preferred sharing options. Once the printer is installed, do not print the test page yet.
9. Go back to the Printers and right click on the printer you just installed, choose Printer Properties.
10. Go to Ports and highlight the port for the printer you just installed and select Configure port. Choose Raw for protocol and under Raw settings, add the port number (9001 is the default configuration setting). Click OK and close the properties window.
11. Go to the printers again and right click on the newly installed printer. Go to printer properties and print a test page.
12. If successful, you should now be able to use this printer from any Windows program.
How do I install an Ethernet printer on a network with Windows XP/Vista?
1. Plug the printer into the network and turn power on.
2. Run a diagnostic sample and get the printer IP address. If there is a problem with the IP address then reset the printer communication parameters and try again.
3. Make sure Raw TCP/IP is enabled and the port is set (Default: 9001). If using a web server, ensure HTTP is enabled and the port is also set (Default: 80). (Default configuration is sufficient for installation).
4. Go to the Control Panel/Printers window.
5. Choose Add a Printer, Local printer (do not choose network printer), uncheck Automatically detect, and choose Create a New Port. Select Standard TCP/IP Port.
6. Input the printer IP address in the IP address box. Uncheck Query for Printer or Auto Query if applicable. In the next screen, Windows will attempt to detect the TCP/IP port and then ask for additional port information. Select Generic Network Card for Device Type.
7. At the Install Printer Driver Window, choose Have Disk and Browse to the appropriate mini driver location and select the appropriate mini driver.
8. Name the printer and select preferred sharing options. Once the printer is installed, do not print the test page yet.
9. Go back to the Printers group and right click on the printer you just installed, choose properties.
10. Go to Ports and highlight the port for the printer you just installed and select Configure port. Choose Raw for protocol and under Raw settings, add the port number (9001 is the default configuration setting). Click OK and close the properties window.
11. Go to the printer group again and right click on the newly installed printer. Go to properties and print a test page.
12. If successful, you should now be able to use this printer from any Windows program.
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