Highvoltage power distribution

The high-voltage power supply applies an overlap of dc and ac voltage to the primary-charging roller and the developing roller. This circuit also applies a positive or negative dc voltage to the transfer roller according to the instructions from the engine control unit. This circuit also controls the image density by changing the primary ac voltage and the developing ac bias according to the print-density setting. Figure 4-7. High-voltage power supply circuit shows the high-voltage power supply...

Does the product receive a fax

Use another fax machine to send a fax to the product. The fax cord is plugged into the additional device connector on the back of the product. Verify that the fax cord is plugged into the fax interface port (the bottom phone-cord connector) on the back of the product. The telephone line is not operational or the product is not plugged into the telephone line. Make sure that the product is plugged into a telephone line that is known to work. Press fax send and listen for a dial tone. Try a...

Numerical parts list

Paper-tray assembly (see table 7-14) Electrical components assembly (see table 7-20) Paper-pickup-tray assembly (see table 7-14) Screws for scanner side panels, scanner formatter, and ADF glass frame Screws that secure scanner to printer Right cartridge guide (part of service-parts kit) Cartridge-guide holder (part of service-parts kit) Left cartridge guide (part of service-parts kit) Cartridge-guide holder (part of service-parts kit) Scanner flat flexible cable (FFC) assembly (includes FCC...

Is the copy function operational

Place the configuration report into the ADF and make a copy. The report should feed smoothly through the ADF and copies should print without print-quality problems. Also make a copy from the flatbed. The flatbed produces poor-quality copies. 1. If the print quality from the internal tests and the copy from the ADF are acceptable, clean the flatbed glass. 2. If, after performing the maintenance, the problem persists, replace the scanner assembly. The ADF produces poor-quality copies. 1. If the...

The following tables list the fax receive and fax send codes that appear in the fax activity log To print a fax

The fax session has been completed without errors. The user has pressed cancel, which caused the fax session to be prematurely halted. Allow the product to receive the fax. The product has answered a call but has been unable to detect the presence of a fax machine. Typically, this is caused by the product answering a voice call. The remote user canceled the fax transmission by pressing cancel immediately before, or just as, the product answered the call. The remote machine automatically ended...

And it does not stay attached to the printed page

Clean the print path. (See To clean the paper path.) The media does not meet HP's specifications (for example, it is too moist or too rough). Make sure that the media meets specifications detailed in the HP LaserJet Printer Family Print Media Guide. The driver is not set for the correct media. 1. On the Paper tab of the printer driver, under Type is , select the correct media type from the drop-down list. 2. Select the correct media by using the HP Toolbox. The power strip is not working...

Alphabetical parts list

Back cover (includes straight-through output door) Cartridge-guide holder (part of service-parts kit) Cartridge-guide holder (part of service-parts kit) Electrical components assembly (see table 7-20) Engine controller PCB assembly, 110-127 V Engine controller PCB assembly, 220-240 V Left cartridge guide (part of service-parts kit) Paper-pickup assembly (also includes all parts shown in the next figure) Paper-pickup assembly (also includes all parts shown in the previous figure)...

Alert and warning messages

Alert and warning messages appear temporarily and might require the user to acknowledge the message by pressing menu enter to resume or by pressing cancel to cancel the job. With certain warnings, the job might not complete or the print quality might be affected. If the alert or warning message is related to printing and the auto-continue feature is on, the product will attempt to resume the printing job after the warning has appeared for 10 seconds without acknowledgement. Note Event-log codes...

Examples of a successfully sent fax and a successfully received fax appear after the tables

Phase B Pre-message procedure negotiate compatible format protocol Training synchronize signals , check for errors Phase C Message transmission page scan transmission Transmit message FSK, followed by date Receive message SCAN , check for errors At end of message, send one of the following Phase D Post-message transmission next page end of transmission Detect EOM, EOP, MPS, PRI-Q, PPS-NULL, PPS-MPS, PPS-EOM, PPS-EOP, or PPS-PRI-Q Transmit MCF response to confirmation signals of postmessage...

List of figures

Product hardware Figure 1-2. Identification Figure 2-1. Product Figure 2-2. Fax Figure 2-3. Alphanumeric Figure 2-4. Menu and cancel Figure 2-5. Copy, scan, and start Figure 2-6. Output Figure 2-7. Straight-through output Figure 3-1. Cleaning the flatbed Figure 3-2. Cleaning the scanner Figure 3-3. Cleaning the lid Figure 3-4. Unplug the Figure 3-5. Remove the print Figure 3-6. Clean the print-cartridge Figure 3-7. Insert the print Figure 3-8. Plug in the Figure 3-9. Inserting the...

Critical error messages can indicate some kind of failure Cycling the power might fix the problem If a critical error

The product has experienced an internal hardware error. Turn off the power switch, wait at least 20 minutes, and then turn on the power switch and wait for the product to initialize. Check the cabling connections to the heating element. If a surge protector is being used, remove it. Plug the printer directly into the wall socket. Use the power switch to turn the product on. Perform the heating-element check see Heating-element check . If the error persists, replace the heating element. If,...

Pages are coming out curled or wrinkled

Paper curl is inherent to the laser printing processes, and occurs when paper is subjected to heat. Paper curl tends to relax as the paper cools while resting on a flat surface. Make sure that the media meets specifications detailed in the HP LaserJet Printer Family Print Media Guide. Paper is curled or wrinkled when printing. Open the straight-through output door on the back of the product and use this paper path. In the printer driver, on the Paper or Paper Quality tab, select a...

Ps Premium Protection printcartridge warranty

This HP print cartridge is warranted to be free from defects in materials and workmanship. This warranty does not apply to print cartridges that a have been refilled, refurbished, remanufactured or tampered with in any way, b experience problems resulting from misuse, improper storage, or operation outside of the published environmental specifications for the printer product or c exhibit wear from ordinary use. To obtain warranty service, please return the product to place of purchase with a...