HP LaserJet Pro M106 Troubleshooting Manual

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[Page 1] HP LaserJet Pro M106

LaserJet Pro M101-M106 LaserJet Pro MFP M129-M134 www.hp.com/support/ljM101 www.hp.com/support/ljM129MFP Troubleshooting Manual For printer part removal and part number information, see the Repair Manual. M101-M106 M129-M134 ...

[Page 2] HP LaserJet Pro M106

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[Page 3] HP LaserJet Pro M106

HP LaserJet Pro M101, M106 and LaserJet Pro MFP M129, M134 Troubleshooting Manual ...

[Page 4] HP LaserJet Pro M106

Copyright and License © Copyright 2016 HP Development Company, L.P. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. The information contained herein is subject t...

[Page 5] HP LaserJet Pro M106

Conventions used in this guide TIP: Helpful hints or shortcuts. Reinstallation tip: Reinstallation helpful hints, shortcuts, or considerations. NOTE: Information that explains a concept or how to complete a task. IMPORTANT: Information that help the ...

[Page 6] HP LaserJet Pro M106

iv Conventions used in this guide ENWW ...

[Page 7] HP LaserJet Pro M106

For additional service and support information HP service personnel, go to the Service Access Work Bench (SAW) at http://h41302.www4.hp.com/km/saw/ home.do. Channel partners, go to HP Channel Services Network (CNS) at https://h30125.www3.hp.com/hpcsn...

[Page 8] HP LaserJet Pro M106

vi For additional service and support information ENWW ...

[Page 9] HP LaserJet Pro M106

Table of contents 1 Theory of operation ....................................................................................................................................... 1 Related documentation and software .......................................

[Page 10] HP LaserJet Pro M106

Fuser control ..................................................................................................................................... 15 Fuser control functions .............................................................................

[Page 11] HP LaserJet Pro M106

Line current control ........................................................................................................ 45 Billing or metering tone filters ..........................................................................................

[Page 12] HP LaserJet Pro M106

Print the configuration report from a 2-line control panel ......................... 74 Print the configuration report from a touchscreen control panel .............. 74 Finding important information on the configuration report ........................

[Page 13] HP LaserJet Pro M106

Step one: Use paper that meets HP specifications ...................................................... 132 Step two: Check the environment ................................................................................ 132 Check other print job se...

[Page 14] HP LaserJet Pro M106

Clear paper jams in the input tray ................................................................................ 173 Clear paper jams in the toner-cartridge area .............................................................. 176 Clear paper jams...

[Page 15] HP LaserJet Pro M106

The header is appended to the top of the page when the overlay option is enabled ......................................................................................................................... 208 A mix of names and numbers is in the reci...

[Page 16] HP LaserJet Pro M106

ISDN ............................................................................................................................... 224 Solve email problems (M129/M134) ...................................................................................

[Page 17] HP LaserJet Pro M106

List of tables Table 1-1 Sequence of operation ......................................................................................................................................... 4 Table 1-2 Motors ..............................................

[Page 18] HP LaserJet Pro M106

Table 2-20 System Setup menu ......................................................................................................................................... 82 Table 2-21 Network Setup menu ...................................................

[Page 19] HP LaserJet Pro M106

List of figures Figure 1-1 Relationship between the main printer systems ............................................................................................... 3 Figure 1-2 Engine-control system ..............................................

[Page 20] HP LaserJet Pro M106

Figure 2-4 Service parts (cross section; printer base) ....................................................................................................... 58 Figure 2-5 Image formation (cross section; printer base) ...............................

[Page 21] HP LaserJet Pro M106

1 Theory of operation ● Related documentation and software ● Basic operation ● Formatter-control system ● Engine-control system ● Engine laser scanner system ● Engine pickup, feed, and delivery system ● Scanning and image capture system...

[Page 22] HP LaserJet Pro M106

Related documentation and software HP service personnel, go to the Services Access Workbench (SAW) at http://h41302.www4.hp.com/km/saw/ home.do. Channel partners, go to HP Channel Services Network (CSN) at https://h30125.www3.hp.com/hpcsn. 2 Chapter ...

[Page 23] HP LaserJet Pro M106

Basic operation The printer routes all high-level processes through the formatter, which stores font information, processes the print image, and communicates with the host computer. The basic printer operation comprises the following systems: ● En...

[Page 24] HP LaserJet Pro M106

Sequence of operation The DC controller PCA controls the operating sequence, as described in the following table. Table 1-1 Sequence of operation Period Duration Description Waiting From the time the power is turned on, the door is closed, or when ...

[Page 25] HP LaserJet Pro M106

Formatter-control system The formatter performs the following functions: ● Controls the sleep delay function ● Receives and processes print data from the various printer inputs ● Monitors control-panel functions and relays printer status inform...

[Page 26] HP LaserJet Pro M106

Printer management language (PML) PML allows remote configuration of the printer and status monitoring through the input/output (I/O) ports. Control panel The formatter sends and receives printer status and command data to and from the control panel....

[Page 27] HP LaserJet Pro M106

Fax NOTE: M129-M134 models only. The printer includes a fax phone line connection. Memory If the printer encounters a problem when managing available memory, a clearable warning message appears on the control panel. Firmware The formatter stores the...

[Page 28] HP LaserJet Pro M106

Engine-control system The engine-control system receives commands from the formatter and interacts with the other main systems to coordinate all printer functions. The engine-control system consists of the following components: ● DC controller ●...

[Page 29] HP LaserJet Pro M106

DC controller The DC controller controls the operation of the printer and its components. The DC controller starts the printer operation when the printer power is turned on and the power supply sends DC voltage to the DC controller. After the print...

[Page 30] HP LaserJet Pro M106

Component type Abbreviation Description Switch SW1 Developer alienation switch SW501 Cartridge door switch SW740 Power switch Photointerrupter PS601 Main motor rotation number sensor SR760 Top of page (TOP) sensor SR770 Media out sensor SR771 Pickup ...

[Page 31] HP LaserJet Pro M106

Motor control The printer has one motor. The motor drives the components in the image-formation system. The DC controller monitors the motor to determine if it has failed. It notifies the formatter when it encounters the following conditions: ● St...

[Page 32] HP LaserJet Pro M106

Low-voltage power supply The low-voltage power-supply (LVPS) circuit converts the AC power from the wall receptacle into the DC voltage used by the printer components. The following two printer states relate to the low-voltage power supply: ● Inac...

[Page 33] HP LaserJet Pro M106

Figure 1-4 Low-voltage power-supply circuit AC input Fuse FU101 Rectifying circuit Frequency detection circuit (220-240V only) +24V generation circuit Protection circuit +3.3V generation circuit Formatter +3.3F FET /3.3FON FET LVM FREQSNS Low-volta...

[Page 34] HP LaserJet Pro M106

Table 1-3 List of DC voltages (continued) DC power supply Description +24P Stopped when cartridge door is opened. (SW501) Stopped during active OFF or inactive OFF +24F Constantly supplied Stopped during active OFF or inactive OFF +3.3V +3.3V Consta...

[Page 35] HP LaserJet Pro M106

● Transfer front guide ● Transfer roller High-voltage power supply circuits The high-voltage power supply contains the following separate circuits. Figure 1-5 High-voltage power supply circuits PR DV TR Primary charging bias circuit Developing b...

[Page 36] HP LaserJet Pro M106

Figure 1-6 Fuser components FUSER TEMPERATURE signal FUSER HEATER CONTROL signal Low-voltage power supply TH1 TP1 H1 Pressure roller Fuser film Fuser heater safety circuit Fuser heater control circuit DC controller Engine controller Table 1-4 Fuse...

[Page 37] HP LaserJet Pro M106

Fuser control functions Figure 1-7 Fuser control CPU Fuser heater safety circuit FREQSNS FSRD RLYD FSRTHSNS RL101 Fuser heater (H1) Fuser film assembly Pressure roller DC controller Engine controller Low-voltage power supply Fuser heater control cir...

[Page 38] HP LaserJet Pro M106

Table 1-5 Fuser control functions (continued) Failure detection function Supported feature Low temperature error detection Yes High temperature error detection Yes Breaking of a heater wire detection No Driving-circuit failure detection (frequency d...

[Page 39] HP LaserJet Pro M106

Engine laser scanner system The DC controller receives instructions from the formatter in order to control the laser scanner system. The DC controller signals the lasers to emit light, and the laser beams pass through lenses and onto the scanner mir...

[Page 40] HP LaserJet Pro M106

Laser scanner failure detection The DC controller detects the following laser scanner failures: Failure detection function Supported feature Beam detect (BD) failure detection: A specified BD interval is not detected within a specified period of tim...

[Page 41] HP LaserJet Pro M106

Image-formation process The DC Controller controls the internal components of the image formation system (according to commands received from the formatter) to form the toner image on the photosensitive drum surface. The toner image is then transfe...

[Page 42] HP LaserJet Pro M106

NOTE: The primary charging roller and developer roller are located in the toner cartridge. Figure 1-10 Main motor (M1) and image formation components DC controller Engine controller M1 Abbreviation Component M1 Main motor The following figure shows...

[Page 43] HP LaserJet Pro M106

Figure 1-11 Sensors Engine controller LED391 SW1 Environment sensor DC controller Table 1-6 Sensors Abbreviation Component LED391 Pre-exposure LED - Environment sensor SW1 Developer alienation switch The image-formation process consists of ten ste...

[Page 44] HP LaserJet Pro M106

Table 1-7 Image formation process Functional block Steps Description Latent image formation 1. Pre-exposure 2. Primary charging 3. Laser-beam exposure An invisible latent image forms on the surface of the photosensitive drums. Development 4. Develo...

[Page 45] HP LaserJet Pro M106

Step 2: Primary charging To prepare for latent image formation, the surface of the photosensitive drum is charged with a uniform negative charge. The primary charging roller receives the primary charging bias, and then the roller charges the drum d...

[Page 46] HP LaserJet Pro M106

Step 3: Laser-beam exposure The laser beam strikes the photosensitive drum to neutralize the negative charge on portions of the drum surface. An electrostatic latent image forms where the negative charge was neutralized. Figure 1-15 Laser-beam expo...

[Page 47] HP LaserJet Pro M106

Step 5: Transfer Transfer bias is applied to the transfer roller to give the paper a positive charge. The positively charged paper attracts the negatively charged toner from the photosensitive drum surface and the image transfers to the paper. Figu...

[Page 48] HP LaserJet Pro M106

Step 6: Separation The elasticity of the paper and the curvature of the photosensitive drum cause the paper to separate from the drum surface. The static charge eliminator reduces the electrical charge on the back side of the paper for stable paper...

[Page 49] HP LaserJet Pro M106

Step 8: Drum cleaning A reverse charge is applied to the transfer roller and the primary charging roller to transfer any residual toner on each roller back to the photosensitive drum. This toner is then removed from the drum surface by the developi...

[Page 50] HP LaserJet Pro M106

Figure 1-21 ODT cartridge configuration DC controller Developer roller Primary charging roller O cartridge DT cartridge M1 Memory chip Photosensitive drum Figure 1-22 PT cartridge configuration DC controller M1 Developer roller Primary charging ro...

[Page 51] HP LaserJet Pro M106

Table 1-8 Toner cartridge functions (continued) Function Supported feature Transfer roller cleaning Yes Primary charging roller cleaning Yes ENWW Engine laser scanner system 31 ...

[Page 52] HP LaserJet Pro M106

Engine pickup, feed, and delivery system The pickup, feed, and delivery system uses a series of rollers to move the paper through the printer and consists of the following two functional blocks. The DC controller controls each block to pick up, feed...

[Page 53] HP LaserJet Pro M106

Table 1-9 Pickup, feed, and delivery system functions (continued) Function Supported feature Feed speed control Yes Loop control No Media detection No OHT detection No Image leading edge positioning Yes Media length detection Yes Media width detecti...

[Page 54] HP LaserJet Pro M106

Sensors and switches The following figure shows the sensors and switches for the pickup, feed, and delivery system. Figure 1-24 Sensors and switches for the pickup, feed, and delivery system SR770 SR771 SR780 SR781 SR760 Table 1-10 Photo sensors a...

[Page 55] HP LaserJet Pro M106

Motors and solenoids The following figure shows the motors and solenoids for the pickup, feed, and delivery system. Figure 1-25 Motors and solenoids M1 SL1 Table 1-11 Motors and solenoids Abbreviation Component M1 Main motor SL1 Pickup solenoid Ja...

[Page 56] HP LaserJet Pro M106

Figure 1-26 Jam detection sensors SR780 SR781 SR760 The printer determines that a jam has occurred if one of these sensors detects paper at an inappropriate time. The DC controller stops the print operation and notifies the formatter. Table 1-12 ...

[Page 57] HP LaserJet Pro M106

Table 1-12 Jams that the printer detects (continued) Jam Supported feature Door open jam 1 Yes Door open jam 2 No Door open jam 3 No Door open jam 4 No Fuser wrap jam 1 Yes Fuser wrap jam 2 No Fuser wrap jam 3 No Fuser wrap jam 4 No Delivery delay j...

[Page 58] HP LaserJet Pro M106

Scanning and image capture system (MFP printers) NOTE: This section is for the (MFP printers) only. The image scanner is located on the top of the printer. The contact image sensor component of the image scanner captures an electronic image of the d...

[Page 59] HP LaserJet Pro M106

Figure 1-28 Integrated scanner assembly model block diagram Contact image sensor Document Feeder Image scanner ENWW Scanning and image capture system (MFP printers) 39 ...

[Page 60] HP LaserJet Pro M106

Motor and sensors The following figure shows the motors and sensors in the scanning and image capture system. Figure 1-29 Motor and sensors ADF Image scanner Photointerrupter Sensor Motor Formatter Table 1-13 Motor and sensors Component type Abbre...

[Page 61] HP LaserJet Pro M106

Document feeder system (MFP printers) NOTE: This section is for the MFP printers only. Document feeder simplex operation The document feeder will not function when the document feeder cover is open. The paper path is incomplete if the document feede...

[Page 62] HP LaserJet Pro M106

Fax functions and operation (fax models only) The following sections describe the printer fax capabilities. Computer and network security features The printer can send and receive fax data over telephone lines that conform to public switch telephone ...

[Page 63] HP LaserJet Pro M106

NOTE: In order for the 1-2-3 sequence to work, the extension phone setting must be set to On in the Fax Setup menu. Distinctive ring function Distinctive ring is a service that a telephone company provides. The distinctive ring service allows three ...

[Page 64] HP LaserJet Pro M106

The fax subsystem The formatter, fax card, firmware, and software all contribute to the fax functionality. The designs of the formatter and fax card, along with parameters in the firmware, determine the majority of the regulatory requirements for t...

[Page 65] HP LaserJet Pro M106

The telephone network uses DC current to determine the hook state of the telephone, so line current must be present during a call. The silicon DAA provides a DC holding circuit to keep the line current constant during a fax call. The silicon DAA co...

[Page 66] HP LaserJet Pro M106

Billing or metering tone filters Switzerland and Germany provide high-frequency AC signals on the phone line in order to bill customers. A filter in a special fax cable (for certain countries/regions), can filter these signals. Because these billing ...

[Page 67] HP LaserJet Pro M106

2 Solve problems ● For additional service and support ● Troubleshooting process ● Tools for troubleshooting ● Improve print quality ● Improve copy and scan image quality (M129/M134) ● Clean the printer ● Solve paper-handling problems �...

[Page 68] HP LaserJet Pro M106

For additional service and support HP service personnel, go to the Service Access Workbench (SAW) at http://sawpro.glb.itcs.hp.com. Channel partners, go to HP Channel Services Network (CSN) at www.hp.com/partners/csn . At these locations, find inform...

[Page 69] HP LaserJet Pro M106

Troubleshooting process Determine the problem source When the printer malfunctions or encounters an unexpected situation, the printer control panel alerts the user to the situation. This section contains a pre-troubleshooting checklist and a trouble...

[Page 70] HP LaserJet Pro M106

General topic Questions Transfer roller and fuser ● Are the transfer roller and fuser installed correctly? Covers ● Is the toner cartridge door closed? Condensation ● Does condensation occur following a temperature change (particularly in winte...

[Page 71] HP LaserJet Pro M106

Table 2-1 Troubleshooting flowchart (continued) 5 Print quality Does the print quality meet the customer's requirements? Compare the images with the sample defects in the image defect tables. See the images defects table in the printer troubl...

[Page 72] HP LaserJet Pro M106

● Windows 8.1: Click the down arrow in lower left corner of the Start screen, and then select the printer name. ● Windows 8: Right-click an empty area on the Start screen, click All Apps on the app bar, and then select the printer name. ● Win...

[Page 73] HP LaserJet Pro M106

Tools for troubleshooting The section describes the tools that can help solve problems with the printer. Individual component diagnostics Tools for troubleshooting: LED diagnostics LED, engine, and individual diagnostics can identify and troubleshoo...

[Page 74] HP LaserJet Pro M106

Printer state Ready light state Attention light state Initializing Blinking Blinking Ready On Off Receiving data/processing job or cancelling job Blinking Off Error message Off Blinking Fatal error 1 On On 1 The printer restarts after one of these e...

[Page 75] HP LaserJet Pro M106

3. Open, and then close the toner-cartridge door four times at an interval of about two seconds to start the internal engine-test. 4. If the engine test is successful, an engine-test page prints. The test page should have a series of lines that are...

[Page 76] HP LaserJet Pro M106

Diagrams Use the diagrams in this section to identify printer components. Diagrams: Block diagrams Sensors and switches (image formation system; printer base) Figure 2-2 Sensors and switches (image formation system; printer base) Engine controller L...

[Page 77] HP LaserJet Pro M106

Sensors (pickup, feed, and delivery system; printer base) Figure 2-3 Sensors (pickup, feed, and delivery system; printer base) SR770 SR771 SR780 SR781 SR760 Table 2-3 Sensors (pickup, feed, and delivery system; printer base) Item Description PS760...

[Page 78] HP LaserJet Pro M106

Cross section diagrams ● Service parts (printer base) ● Image formation (printer base) ● Motor (printer base) Service parts (printer base) Figure 2-4 Service parts (cross section; printer base) 1 2 4 35 Table 2-4 Service parts (cross section...

[Page 79] HP LaserJet Pro M106

Image formation (printer base) Figure 2-5 Image formation (cross section; printer base) Engine controller DC controller High-voltage power supply Cartridge Fuser Laser scanner ass’y Transfer roller ENWW Tools for troubleshooting 59 ...

[Page 80] HP LaserJet Pro M106

Motor (printer base) Figure 2-6 Motor (cross section; printer base) DC controller Engine controller M1 Table 2-5 Motor (cross section; printer base) Item Description M1 Main motor 60 Chapter 2 Solve problems ENWW ...

[Page 81] HP LaserJet Pro M106

Diagrams: Printed circuit assembly (PCA) connector locations ● Engine controller PCA ● Formatter PCA Engine controller PCA Figure 2-7 Engine controller PCA connectors J501 J582 J563 J511 J512 J551 J541 J531 J536 J561 J521 J581 J311 Table 2-6 E...

[Page 82] HP LaserJet Pro M106

Formatter PCA Figure 2-8 Formatter PCA (M101/M106) 4 5 1 2 3 Table 2-7 Formatter PCA (M101/M106) Item Description Item Description 1 USB port, J13 4 Engine interface, J7 2 Wireless interface, J12 5 Power, J16 3 Control-panel interface, J1/J3 62 ...

[Page 83] HP LaserJet Pro M106

Figure 2-9 Formatter PCA (M129/M134) 5 6 1 2 3 4 7 8 9 10 Table 2-8 Formatter PCA (M129/M134) Item Description Item Description 1 LAN port, J2 6 LCD control-panel interface, J28 2 USB port, J4 7 Wireless interface, J30 3 Document feeder interface,...

[Page 84] HP LaserJet Pro M106

Diagrams: External plug and port locations Figure 2-10 External plug and port locations (M101/M106) 1 2 Table 2-9 External plug and port locations (M101/M106) Item Description 1 USB connector 2 Power cord receptacle 64 Chapter 2 Solve problems E...

[Page 85] HP LaserJet Pro M106

Figure 2-11 External plug and port locations (M129/M134) 1 2 3 4 Table 2-10 External plug and port locations (M126/M134) Item Description Item Description 1 USB connector 3 Fax "line in" port for attaching the fax phone line to the prod...

[Page 86] HP LaserJet Pro M106

Diagrams: Locations of major components Major components (printer base) Figure 2-12 Main assemblies 3 1 2 4 6 5 Table 2-11 Main assemblies Item Description Item Description 1 Fuser 4 Laser/scanner assembly 2 Fuser film assembly 5 Image scanner (M1...

[Page 87] HP LaserJet Pro M106

Figure 2-13 Main parts (printer base) 2 1 3 4 Table 2-12 Main parts (printer base) Item Description Item Description 1 Transfer roller 3 Developer alienation solenoid 2 Separation pad assembly 4 Pickup roller Figure 2-14 PCAs (printer base) 1 3 2...

[Page 88] HP LaserJet Pro M106

Diagrams: Timing chart NOTE: The timing chart is based on two consecutive prints on letter-size paper. Figure 2-15 General timing chart 19 20 16 17 18 13 Fuser heater 14 15 10 Primary charging bias 11 Developing bias 12 Transfer bias ...

[Page 89] HP LaserJet Pro M106

Diagrams: Circuit diagrams Figure 2-16 General circuit diagram A 6 5 4 3 2 1 B C D 21 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 824201816 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 23 12 14 22 P906 P904 P905 P903 P901B F901A <Seagull Network...

[Page 90] HP LaserJet Pro M106

Use advanced configuration with HP Embedded Web Server (EWS) and HP Device Toolbox (Windows) Use the HP Embedded Web Server to manage printing functions from a computer instead of the printer control panel. ● View printer status information ● D...

[Page 91] HP LaserJet Pro M106

2. Open a web browser, and in the address line, type the IP address or host name exactly as it displays on the printer configuration page. Press the Enter key on the computer keyboard. The EWS opens. NOTE: If the web browser displays a message indic...

[Page 92] HP LaserJet Pro M106

Table 2-14 HP Embedded Web Server (EWS) and HP Device Toolbox (Windows) Tab or section Description Home tab Provides printer, status, and configuration information. ● Device Status: Shows the printer status and shows the approximate percent life ...

[Page 93] HP LaserJet Pro M106

Table 2-14 HP Embedded Web Server (EWS) and HP Device Toolbox (Windows) (continued) Tab or section Description Scan tab (MFP models only) Configure the Scan to Network Folder and Scan to E-mail features. ● Network Folder Setup: Configure folders o...

[Page 94] HP LaserJet Pro M106

IMPORTANT: Depending on the printer model, other pages might print with the configuration report. Also, the information found on a configuration report can vary depending on the printer model. Print a configuration report from an LED control panel 1...

[Page 95] HP LaserJet Pro M106

Figure 2-17 Sample configuration report 5 6 1 2 3 4 8 7 9 Table 2-15 Sample configuration report Item Description Item Description 1 Printer name and model information 6 Product Settings information 2 Product information 7 Installed Personalities ...

[Page 96] HP LaserJet Pro M106

Control panel menus Setup menu To open this menu, either press the Setup button (2-line control panels) or touch the Setup button (touchscreen control panels). The following sub menus are available: ● HP Web Services NOTE: For 2-line control p...

[Page 97] HP LaserJet Pro M106

Reports menu Table 2-17 Reports menu Menu item Description Demo Page Prints a page that demonstrates print quality. Fax Reports (fax models only) ● Fax Confirmation: Sets whether the printer prints a confirmation report after a successful fax job...

[Page 98] HP LaserJet Pro M106

Table 2-17 Reports menu (continued) Menu item Description Service Page Prints the service page. The service page includes information about supported paper types, copy settings, and other settings that are not included on the configuration page. It...

[Page 99] HP LaserJet Pro M106

Self Diagnostics menu NOTE: Not available for the 2-line control panel. Table 2-18 Self Diagnostics menu Menu item Description Run Wireless Test (if connected to a wireless network — wireless models only) The network test provides information on...

[Page 100] HP LaserJet Pro M106

Table 2-19 Fax Setup menu (continued) Menu item Sub-menu item Sub-menu item Description Basic Setup (continued) Distinctive Ring All Rings* Single Double Triple Double and Triple If you have distinctive ring phone service, use this item to configur...