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Table 49. Motors and fans Description
ADF fan ADF fan assembly Delivery motor (24 vdc) Flatbed fan assembly Flatbed motor (24 vdc) Pickup motor (24 vdc) Power supply assembly (fan included)
Part number
RH7-1486-000CN RG5-6312-000CN RH7-1487-000CN RG5-6318-000CN RH7-1485-000CN RH7-1488-000CN RG1-4153-000CN
Qty
1 1 1 1 1 1 1
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Motors and fans 113
Basic block diagram
The CP processes most jobs at the scan engine and sends the data to the print engine in the form of hardware ready bits (HRB). The formatter performs three processing tasks: n-up, book copying, and image rotation. When one of these tasks is performed, data is sent to the formatter in PCL-XL format. The formatter sends a scan command to the CP after it receives a scan command from the control panel by way of the dc controller. The CP then sends a scan command to the scanner controller board (SCB). The SCB generates the image data and sends the image data back to the CP which, in turn, passes the image back to the formatter. Depending on the original request from the control panel (n-up, book copying, or image rotation), the formatter completes the processing. The data is then passed to the dc controller for printing, or is passed to a computer for digital sending.
Scan engine Scanner controller board
Copy processor board Control panel
Formatter
Computer
DC controller Print engine
Figure 32.
Basic block diagram for the HP LJ 9000mfp/9000Lmfp
Figure 33.
Basic block diagram for the HP LJ 9040mfp/9050mfp and the HP CLJ 9500mfp
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Basic system configuration
Scanner unit systems
Note The HP LJ9040/950mfp and the HP CLJ 9500mfp use different ADF and flatbed optical assemblies than the HP LJ 9000mfp/9000Lmfp. The five main systems in the scanner unit include the following: ADF document feed system · ADF output tray · ADF feeder · ADF input tray ADF document exposure system · scanning lamp · document · optical path flatbed document exposure system · scanning lamp · document · optical path · optical drive unit · detection unit (home position sensor) image processing system · ADF analog processor · ADF CCD (charge coupled device) driver · flatbed analog processor · flatbed CCD driver scanner control system · scanner controller board (SCB)
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Basic system configuration 115
Scan mode
The functions based on a scan mode include: ADF duplex mode: controlled by the ADF document feed system, ADF document exposure system, flatbed document exposure system, and image processing system. ADF simplex mode: controlled by the ADF document feed system, flatbed document exposure system, and image processing system. Flatbed mode: controlled by the flatbed document exposure system and image processing system.
Figure 34.
Basic system configuration
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Power supply assembly
CAUTION Alternating current (ac) is always on. Even if the MFP is off, the scan engine power supply is supplied with ac from the print engine power supply. Make sure you unplug the MFP before beginning any service on the MFP.
Table 50. Electrical specifications Volts Frequency Amperes (amps) Watts (W) (typical) Thermal units per hour (Btu/hr)
HP LaserJet 9000mfp/9000Lmfp1 100-127 Vac 50/60 Hz ± 10 percent ± 2 Hz Minimum recommended current capacity = 15-amp dedicated circuit Minimum recommended current capacity = 6.5 amp printing = 1,075 W standby = 440 W PowerSave 1 = 70 W low power = 230 W off = .5 W ADF printing = 1,130 W printing = 1,070 W standby = 415 W PowerSave 1 = 70 W low power = 230 W off = 1.3 W ADF printing = 1,075 W printing = 3,670 Btu/hr standby = 1,500 Btu/hr PowerSave 1 = 240 Btu/hr low power = 785 BTu/hr off = 1.7 Btu/hr ADF printing = 3,860 printing = 3,650 Btu/hr standby = 1,420 Btu/hr PowerSave 1 = 240 Btu/hr low power= 785 Btu/hr off = 4.5 Btu/hr ADF printing = 3,670
220-240 Vac 50/60 Hz ± 10 percent ± 2 Hz
HP LaserJet 9040mfp/9050mfp1 100-127 Vac 50/60 Hz ± 10 percent ± 2 Hz Minimum recommended current capacity = 15-amp dedicated circuit Minimum recommended current capacity = 6.5-amp dedicated circuit printing = 1,040 W standby = 265 W PowerSave 1 = 40 W PowerSave 2 = 25 W off = 0 W printing = 995 W standby = 265 W PowerSave 1 = 40 W PowerSave 2 = 25 W off = 0.2 W printing = 3,550.36 Btu/hr standby = 904.71 Btu/hr PowerSave 1 = 136.56 Btu/hr PowerSave 2 = 85.35 Btu/hr off = 0 Btu/hr printing = 3,396.93 Btu/hr standby = 904.71 Btu/hr PowerSave 1 = 136.56 Btu/hr PowerSave 2 = 85.35 Btu/hr off = 0.69 Btu/hr
220-240 Vac 50/60 Hz ± 10 percent ± 2 Hz
HP color LaserJet 9500mfp1 100-127 Vac 50/60 Hz ± 10 percent ± 2 Hz Minimum recommended current capacity = 15-amp dedicated circuit printing* = 820 W copying* = 990 W ready = 240 W Sleep 1= 142 W Sleep 2= 49 W off = 2 W *24 PPM Same as the 110 Vac model. printing = 2797.84 Btu/hr copying = 3377.88 Btu/hr ready = 818.88 Btu/hr Sleep 1 = 484.50 BTu/hr Sleep 2 = 167.18 Btu/hr off = 6.82 Btu/hr Same as the 110 Vac model.
220-240 Vac 50/60 Hz ± 10 percent ± 2 Hz
Minimum recommended current capacity = 7 amp
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Basic system configuration 117
Figure 35. Note
Power supply assembly
When the control panel backlight is off, the +5V line is being signaled off at the control panel assembly by the control panel controller board. SPON is the scanner power-on signal sent to the scan engine power supply when the MFP is powered on by pressing the power switch on the print engine. See "Low-voltage power supply circuit" on page 122 for more information.
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PowerSave (sleep) mode (HP LJ 9000mfp/9000Lmfp)
To extend the life of the control panel backlight, the lamp is turned off when the MFP goes into sleep mode. If the sleep mode has been disabled (PowerSave is turned off), the control panel backlight will turn off after an hour of no activity.
Table 51. Powersave mode (HP LJ 9000mfp/9000Lmfp) Setting
PowerSave on
Description
Sleep mode is configurable up to 4 hours/low power mode is 15 minutes (not configurable). The control-panel backlight turns off in sleep mode. Control panel goes to WARMING UP. * The customer can use the control panel (e.g. setup for and scan ahead a 50-page job from the ADF while the MFP is "warming up").
PowerSave off
Low power mode and sleep mode disabled. The control-panel backlight turns off in 1 hour (not user configurable). Control panel goes right to READY.
Figure 36.
HP LJ 9000mfp/9000Lmfp Basic system configuration 119
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Sleep mode (HP LJ 9040mfp/9050mfp/9500mfp)
To extend the life of MFP components and to meet Energy Star energy use guidelines, the MFP uses a sleep mode to conserve energy use. To further extend the life of the control panel backlight, the backlight will turn off after 15 minutes of MFP inactivity (the backlight also turns off when the MFP enters sleep mode). Table 52 below, describes the energy use behavior of the MFP components when the MFP is in sleep mode. Sleep mode 1 is not configurable. The MFP enters sleep mode 1 after 15 minutes of inactivity. Sleep mode 2 is configurable. The MFP enters sleep mode 2 after 45 minutes (default setting; this setting is user configurable) of inactivity. Note Sleep mode can be enabled or disabled by using the control panel menus (RESETS submenu) or by pushing the SLEEP button on the control panel. Pushing the SLEEP button while the MFP is in the READY (waiting for a print job) state begins the sleep mode (sleep mode 2). Pushing the SLEEP button while the MFP is in sleep mode, returns the MFP to the READY state. Sleep mode 1 is defined as a level of MFP power consumption of less than that used when the MFP is in the READY (waiting for a print job) state, and more than that used when in sleep mode 2. Sleep mode 1 begins when the MFP has been inactive for 15 minutes (the 15 minute delay time is not configurable). Sleep mode 1 is the equivalent of the Energy Star program "Low Power" mode. Sleep mode 2 is defined as the lowest level of MFP power consumption possible without the MFP power being turned off. Sleep mode 2 begins after the MFP has been inactive for the amount of time that is set in the SYSTEM SETUP menu SLEEP DELAY sub menu (45 minutes is the default setting). Note When the SLEEP MODE setting in the RESETS submenu is set to OFF, and a SLEEP DELAY setting is selected in the SYSTEM SETUP menu, the SLEEP MODE setting in the RESETS submenu is automatically set to the ON or OFF option (which ever was the last saved option).
Table 52. System behavior in sleep mode Item
Control panel
Sleep mode
Sleep mode 2
Behavior
Backlight turns off.
Description
The control-panel backlight is turned off when sleep mode 2 begins. Power to the external paper handling devices is turned off when sleep mode 1 begins. The power remains off during sleep mode 2. The microprocessor on the formatter slows to 1/16th speed when sleep mode 1 begins, and continue to run at this speed during sleep mode 2.
External paper handling devices
Sleep mode 1 and 2
Power turned off.
Formatter
Sleep mode 1and 2
Processor slow down.
Sleep mode 1 and 2
Color ASIC clock disabled The color ASIC clock is disabled (color MFPs only). when sleep mode 1begins. The clock is stays disabled during sleep mode 2. Hard disk stops. The hard disk is stopped when sleep mode 2 begins.
Sleep mode 2
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Table 52. System behavior in sleep mode (continued) Item
Engine
Sleep mode
Sleep mode 1 Sleep mode 1
Behavior
Fuser fan slows down.
Description
The fuser fan slows to half speed when sleep mode 1 begins.
Face down fan slows down The face down fan slows to half (LJ 9040mfp/9050mfp speed when sleep mode 1 begins. only) Fuser power decreases. Fuser power off. Duplexer power off. The fuser power is decreased when sleep mode 1 begins. The fuser power is turned off when sleep mode 2 begins. The duplexer power is turned off when sleep mode 2 begins.
Sleep mode 1 Sleep mode 2 Sleep mode 2
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Basic system configuration 121
Low-voltage power supply circuit
Opening the feeder cover switch cuts power to the ADF scanning lamp, pickup motor, delivery motor, and the solenoids. The power supply unit generates dc power required in the scan engine based on the ac voltage supplied from the print engine power supply. The remote switch is employed as a power switch of the scan engine. Of the voltages supplied from the print engine dc controller to the power supply of the scan engine, 3.3 vdc are used as a remote signal. The signal is supplied to the power supply unit as the power remote signal (SPON) through the intermediate circuit. When the signal is "H," the low-voltage power supply circuit generates the ac power to the dc power. The power generated in the circuit is converted to +24 vdc, +15 vdc, +5 vdc, and +3.3 vdc required in the scan engine. The +24 vdc is supplied to the motors, solenoids, and scanning lamps; +15 vdc to the sensors, LEDs, and ICs in the SCB; and +3.3 vdc to the CP. The +24 vdc is divided into the +24 vb and +24 va. The +24 vb is constantly supplied from the lowvoltage power supply circuit, and the +24 va stops power supply when the feeder cover switch (JMCSW) is turned off by opening the ADF feeder cover. The +24 va is supplied to the scanning lamps, pickup motors, delivery motors, and solenoids. It also functions as the ADF FEEDER COVER OPEN DETECTION signal, and allows the CPU to detect an open cover.
Figure 37.
Low-voltage power supply circuit
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Protective functions
The low-voltage power supply circuit utilizes overcurrent and overvoltage protective functions. The protective functions automatically interrupt output voltage to prevent power supply failures. These failures occur from an excessive current flow that is caused by a short circuit on the load side, or from an abnormal voltage increase. When the dc voltage is not output from the low-voltage power supply circuit, the overcurrent or overvoltage protective function might be activated. If it is activated, turn off the printer, correct the problem in the failure loads, wait about two minutes, and then turn on the printer. The circuit contains a power fuse (F1) which breaks and cuts off the power supply if overcurrent flows through the ac line.
Figure 38.
Printer power supply
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Basic system configuration 123
Scanner controller circuit
The CPU on the SCB controls the operation sequences of the scan engine. When the dc power is supplied to the scanner controller, the CPU starts to control the scan engine. When the scan engine is in standby status, the CPU outputs signals to drive each load of charge-coupled devices (CCDs), motors, solenoids, and scanning lamps based on a scan command from the CP. CPU (IC7): According to the control programs stored in the ROM (IC5), the CPU performs: · image scanner sequence control · communication with the copy processor control · pickup motor and delivery motor drives control GA (Gate Array) (IC4): According to commands from the CPU, the GA performs: · scanning lamp drive control · sensors, switches, and LEDs control · solenoids control · fan motors control · flatbed document scanning motor control EEPROM (IC16): The EEPROM stores the specific backup adjustment data of the scanner, such as the leading-edge registration adjustment values and horizontal registration adjustment values. ROM (IC5): Stores the scanner control programs. Pickup motor driver IC (IC3): Drives the pickup motor based on commands from the CPU. Delivery motor driver (IC1): Drives the delivery motor based on commands from the CPU. Flatbed document scanning motor driver IC (IC 9): Drives the flatbed scanning motor based on commands from the GA. Reset IC (IC17): Monitors +3.3V, and resets the CPU and GA when the power is turned on.
Figure 39.
Scanner controller circuit
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Flatbed operation
Flatbed document exposure control
The SCB sends a signal (FBLAMP) to the flatbed inverter to turn on the scanning lamp. The flatbed intermediate PCB and flatbed analog processor board pass on the signal. The flatbed inverter sends the signal to the scanning lamp and the document exposure process begins.
Figure 40.
Flatbed document exposure control
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Flatbed operation 125
Flatbed optical drive control
The SCB sends a signal (CRMOT) to the flatbed motor to drive the flatbed optical unit forward to scan from the glass, or backward when scanning from the ADF frontside. HP-S is the flatbed home position detection sensor. When the flatbed optical unit is in the home position, a signal (HP-S) is sent to the SCB.
Figure 41.
Flatbed optical drive control
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Flatbed optical unit operation
The ADF optical unit is located 26.5 mm (1 inch) from the flatbed optical unit when the flatbed optical unit is in the ADF scanning position. When a two-sided original document is copied from the ADF, the first side begins copying before the second side of the two-sided copy. Note The mechanical lock on the MFP is not located in the "home position." Locking the carriage in the control panel moves the optical unit into position so the mechanical lock, which is located on the left side of the unit, can hold the flatbed optical unit during a move. To lock the carriage: 1 2 3 4 5 CAUTION Touch MENU Touch CONFIGURE DEVICE Touch RESETS Touch LOCK CARRIAGE Engage the mechanical lock
Always engage the mechanical lock before moving the MFP to avoid damaging the flatbed optical unit.
Figure 42.
Flatbed optical unit operation
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Flatbed operation 127
Flatbed document size detection
Figure 43.
Flatbed document size detection
Sensor names
Flatbed document detection sensor: SCNSIZE1S (only detects the document on the glass) Flatbed document size detection sensor (1): SCNSIZE2S size sensor Flatbed document size detection sensor (2): SCNSIZE3S size sensor Flatbed document size detection sensor (3): SCNSIZE4S size sensor
The sensors send signals to the SCB. The signals are transferred through the intermediate PCB to the CP. The CP calculates the size of the document based on the signals from the sensors. The flatbed document sensors are located in the same positions on the 110 vdc and 220 vdc MFPs. To determine sizes of larger documents, the MFP searches the Cold Reset Paper Size. For example, it will detect ledger if it is set to letter, and it will detect A3 if it is set to A4.
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Functions operation
When a document is placed on the glass and the ADF unit is closed or at an angle of less than 30 degrees, the SCB begins to detect the presence and size of the document. The SCB monitors outputs from the flatbed document detection sensor (SCNSIZE1S) and the flatbed document size detection sensors (SCNSIZE2S, SCNSIZE3S, and SCNSIZE4S). The SCB passes the signals from the sensors to the CP. The reflecting sensor detects the presence and size information of the document based on whether the photoreceptor can receive the emitted light from the luminous body of the sensor. When a document is on the glass, the document reflects the emitted light and the photoreceptor can receive the reflected light. When there is not a document on the glass, the emitted light passes through the glass and the photoreceptor cannot receive the emitted light.
Figure 44.
Functions operation
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Flatbed operation 129
ADF angle detection
The SCB performs the detection by monitoring an output of the ADF angle detection sensor (PI-1). The output of the PI-1 is "H" when the ADF unit is opened. When the angle between the glass and the ADF is less than 30 degrees, the sensor lever interrupts the PI-1 and the output of the PI-1 is "L."
Figure 45.
ADF angle detection
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ADF operation
ADF document exposure control
1 2 3 The SCB sends a signal to the ADF inverter to turn on the scanning lamp. The ADF intermediate PCB and ADF analog processor board pass the signal through. The ADF inverter sends the signal to the scanning lamp and the document exposure process begins.
Note
The ADF inverter, ADF analog processor, and the ADF intermediate PCB are located inside the ADF.
Figure 46.
ADF document exposure control
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ADF operation 131
ADF document feed control
ADF document feed control is performed to pass paper over the optical units for exposure. The ADF document feed control process begins when the SCB sends signals. The shutter solenoid helps to align the paper, and the weight plate "slaps" down on the stack of paper. Note Both the shutter solenoid and the weight plate help to perform the pickup process. The pickup motor drives the pickup rollers and the feed rollers, and then reverses rotation to drive the registration rollers.
ADF document feed control terminology
STSOL: shutter solenoid PMOT: pickup motor WTSOL: weight solenoid DMOT: delivery motor
Figure 47.
ADF document feed control
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Pickup and feed operation
1 2 The shutter solenoid is turned on when the SCB receives a scan command, and the document shutters drop. About 200 milliseconds after the shutter solenoid is turned on, the pickup motor rotates in the normal direction. The pickup roller, feed roller, and separation belts begin to rotate. At the same time, the weight solenoid is turned on and the weight plate drops down. This allows the document on the document tray to be sent to the feed roller by receiving the rotation drive from the pickup roller and being pressed by the weight plate. The document sent to the feed roller is sent to the ADF feeder after any multiple feeds are cleared by the feed roller and separation belts being driven by the pickup motor. The document sent to the ADF feeder passes through the registration document detection sensor (REG-S) and reaches the registration roller. At this time the registration roller is not rotating so that the leading edge of the document is pushed against the registration roller to correct a skew. After a set period of time from when the leading edge of the document passes the REG-S, the pickup motor rotates in its reverse direction. This allows the registration roller to start rotating and it re-feeds the document. When the leading edge of the re-fed document reaches the timing detection sensor (TMG-S), the document scanning operation starts after a set period of time. The document set to the delivery roller is sent out of the scan engine by the delivery motor rotating in the normal direction. The delivery motor stops rotating after a set period of time. When the delivery motor stops, the shutter solenoid is turned off. The pickup operation is complete after the pickup roller home position control operation.
3 4
5
6
7
Pickup roller home position control operation
The pickup roller home position control operation sets the pickup roller at its home position as an advance preparation to allow the roller to pick up the document. 1 2 3 4 The SCB monitors the pickup home position detection sensor (PICK-S) to detect the home position. At the initial operation, or after delivering the document, the SCB rotates the pickup motor in the reverse direction and checks a signal from the PICK-S. When the PICK-S detects the pickup home position lever on the shaft of the pickup roller, the SCB determines that the pickup roller is at its home position and stops the pickup motor. When the SCB cannot detect the home position of the pickup roller within a specified period of time after the pickup motor starts rotating in the normal direction, the SCB recognizes the pickup motor failure and notifies the CP. A 30.1.9 error is shown on the control panel.
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ADF operation 133
ADF document size detection
The sensors and the potentiometer send signals to the SCB, and these signals are transferred through the intermediate PCB to the CP. The CP calculates the size of the document based on the signals in the service menu.
ADF document size detection terminology
TRS-S: ADF document length detection (short) TRL-S: ADF document length detection (long) TRVR: ADF width detection unit (potentiometer) Note The width detection unit can be calibrated in the service menu.
Figure 48.
ADF document size detection
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ADF feeder sensors
REG-S (registration sensor): detects when paper is approaching the registration rollers. TMG-S (timing sensor): verifies that paper is moving through the paper path. SKR-S (back skew sensor) SKF-S (front skew sensor) Note The ADF has a document detection sensor that detects the presence of paper. This sensor is not shown in the graphic below. When the sensor detects the presence of paper, the LED on the ADF illuminates.
Figure 49.
ADF feeder sensors
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ADF operation 135
ADF document skew detection
1 2 3 4 One of the skew sensors is activated. A signal is sent to the SCB. The SCB begins to read a certain number of clock pulses in 6 mm (.02 inch). A skew jam is not reported if the second skew sensor is activated before the allotted number of pulses.
Note
Skew detection is only performed when the document width is less than or equal to 257 mm (10.1 inches).
Figure 50.
Document skew jam
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Scanned data flow
The MFP has a scan engine with 600 by 600 ppi (pixels per inch) resolution. It has three channels (red, blue, and green) with 10 bits per channel, resulting in the equivalent of a 30-bit scan engine. Analog data is captured by the CCD driver circuit and converted to digital data on the analog processor board. Digital data is then sent through the three channels to the CP. The CP coverts the digital data into one of the three final output types: HRB (hardware ready bits): most copy jobs are processed at the CP and sent to the print engine as HRB. PCL-XL: if rotation, book copying, or n-up is chosen in the job, the CP passes PCL-XL data to the print engine and the formatter finishes the processing. JPEG (lossless): compresses image data from the CP to the formatter when processing a digital send job. The formatter then processes the data into the desired file type (TIFF, MTIFF, JPEG, or PDF).
Figure 51.
Scanned data flow
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Scanned data flow 137
Copy processor
The copy processor (CP) is the link between the formatter in the print engine and the SCB in the scan engine. Control signals from the formatter are sent to the CP. The CP sends these control signals to the SCB. After the scanning process is completed by the SCB, the scanned data is sent to the CP. The CP processes the image and sends the image data to the formatter.
Figure 52.
Example of a copy processor (HP LJ 9000mfp/9000Lmfp shown)
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Scanning process control signals
The CP controls the following scanning process control signals: ADF unit and flatbed unit operation directs the SCB about the following: · when to scan · how to scan · when to activate motors · when to turn the scanning lamps on and off Image processing · color alignment · resolution conversion · image sharpening · moire removal · image scaling · shifting of data strips (reconstructing separately processed image data before CP communication to the formatter) · RGB conversion for CP communication · CP communication to the formatter using one of the following formats:
· · · HRB (fastpath) communication with the hard drive on the formatter PCL-XL (n-up, rotation, book mode) communication with the hard drive on the formatter JPEG compression (when digitally sending data) communication with the hard drive on the formatter
· data compression before sending to the formatter over the high speed copy connect cable
Typical scanning process flow
1 2 3 4 5 6 7 8 9 The original document is placed on the glass or in the ADF. The user enters job preferences using the control panel keys. The user presses the START key. Job preferences are sent to the formatter. Some job preferences, such as n-up, will be held and processed later by the formatter. Others are sent to the CP. The CP sends control signals to the SCB. The document is scanned. The SCB sends scanned image data back to the CP. The CP processes the image. The CP sends the image data to the formatter. The formatter further processes the image data (if required). The image data is then either printed or digitally sent depending on what the user specified at the beginning of the process.
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Copy processor 139
Copy processor LEDs (HP LJ 9000mfp/9000Lmfp)
The copy processor (CP) has four light-emitting diodes (LEDs) (callout 1) located at the back of the MFP. These LEDs illuminate in specific patterns depending on the status of the CP. The table in this section details what occurs at each stage of CP initialization. Hint The LEDs can be difficult to see through the holes in the CP faceplate in a high-light environment. It may be necessary to turn off some lights or remove the faceplate to properly troubleshoot the LEDs. The LED patterns displayed by the HP LaserJet 9000mfp are opposite those displayed by the HP LaserJet 4100/4101mfp because the CPs are mounted differently.
1
Figure 53.
Copy processor LEDs (HP LJ 9000mfp/9000Lmfp)
Table 53. Copy processor LEDs (HP LJ 9000mfp/9000Lmfp) LED pattern CP status First stage of CP initialization
1 1 1* 1* * LEDs might flash before final continuous illumination Memory DIMM detected Firmware DIMM detected MIPS processor functional MIPS processor communicates with the ASIC
Note
1101 0101 0001
If the LEDs stay in the illuminated state, a CP failure has occurred (for example, a memory DIMM is not present or fully seated).
The MIPS processor is communicating with the PCI Bridge The MIPS processor is communicating with the FPGA A check of the FPGA's SRAM is performed ENWW
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Table 53. Copy processor LEDs (HP LJ 9000mfp/9000Lmfp) (continued) LED pattern
0000
CP status
CP is communicating with the DSP and DSP RAM
Second stage of CP initialization
1000 1100 1101 The left-most LED illuminates and stays on when the connection to the SSA (the portion of the firmware that runs in the print engine RAM) is established. The second LED from the left illuminates when communication occurs between the CP and the scan engine. The right-most LED illuminates indicating the CP has booted properly. When this LED begins to flash (referred to as the CP heartbeat) the CP is functioning normally and the MFP is ready to process jobs.
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Copy processor 141
Copy processor LEDs (HP LJ 9040mfp/9050mfp/9500mfp)
The copy processor board (EIO) has two light-emitting diodes (LEDs) (LED 1 callout 1; LED 2 callout 2) located at the back of the MFP. These LEDs illuminate in specific patterns depending on the status of the copy processor board (EIO). The table in this section details what occurs at each stage of copy processor board (EIO) initialization. Hint The LEDs are located on the engine portion of the MFP.
2 0
1
Figure 54.
Copy processor LEDs (HP LJ 9040mfp/9050mfp/9500mfp)
Table 54. Copy processor LEDs (HP LJ 9040mfp/9050mfp/9500mfp) LED 1
0
LED 2
1
Copy processor board (EIO) status
MFP power turned on. If LED 2 is does not illuminated, the copy processor board (EIO) is not seated correctly, or the copy processor board (EIO) or has failed. The copy processor board (EIO) FPGA programming has started. If the copy processor board (EIO) does not processes past this stage, the copy processor board (EIO) has experienced a programming error, or the FPGA integrated circuit on the copy processor board (EIO) has failed. The copy processor board (EIO) FPGA programming has finished. If the copy processor board (EIO) does not processes past this stage, the FPGA integrated circuit on the copy processor board (EIO) has failed. The copy connect board assembly (in the scanner) FPGA programming has started. If the copy processor board (EIO) does not processes past this stage, check the wire harness connectors at the copy processor board (EIO) and the copy connect board assembly (in the scanner). Make sure the cable is not frayed, pinched, or broken. If the error persists, the FPGA integrated circuit on the copy connect board assembly (in the scanner) has failed. The copy connect board assembly (in the scanner) FPGA programming has finished. If the copy processor board (EIO) does not processes past this stage, check the wire harness connectors at the copy processor board (EIO) and the copy connect board assembly (in the scanner). Make sure the cable is not frayed, pinched, or broken. If the error persists, the FPGA integrated circuit on the copy connect board assembly (in the scanner) has failed.
1
1
0
1
1
1
0
1
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Table 54. Copy processor LEDs (HP LJ 9040mfp/9050mfp/9500mfp) (continued) LED 1 LED 2 Copy processor board (EIO) status
The firmware is being downloaded and confirmed. If the copy processor board (EIO) does not processes past this stage, one or more of the following occurred. the memory on the copy processor board (EIO) has failed the operating system did not start the copy processor board (EIO) is locked up The operating system has successfully started and the copy processor board (EIO) application has started. If the copy processor board (EIO) does not processes past this stage, the copy processor board (EIO) is locked up, or the copy processor board (EIO) application failed to complete the startup processes. The copy processor board (EIO) is initializing the scanner. LED 2 does not illuminate if there is communication between the formatter and the scanner fails, or if the fatal error in the scanner occurs. The copy processor board (EIO) successfully established communication between the formatter and the scanner. If the copy processor board (EIO) does not processes past this stage, a problem exists with the Copy Send application (UI). The copy processor board (EIO) successfully established communication with the Copy Send application (UI). If the copy processor board (EIO) does not processes past this stage, the copy processor board (EIO) heart beat signal did not start, or the signal is not being sent. LED 1 displays the copy processor board (EIO) LED heartbeat, indicating copy processor board (EIO) normal operation. If LED 1 stops in the off state, the copy processor board (EIO) application has failed. If LED 2 is off, a fatal error has occurred in the scanner, or the copy processor board (EIO) to scanner communication connection or the copy processor board (EIO) to formatter communication connection has failed,
0
0
0
1
0
0
0
1
1
1
1,0,1,0 (blinking)
1
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6
Removal and replacement
Chapter contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Removal and replacement strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Electrostatic discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Required tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 External covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Control panel (HP LJ 9000mfp/9000Lmfp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Control panel (HP LJ 9040mfp/9050mfp/9500mfp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 ADF feeder cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 ADF feeder cover handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 ADF back cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 ADF front cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Lower delivery roller cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 White board cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Copy processor/connect board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Flatbed rail cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 Flatbed back cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 Flatbed right cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Flatbed left cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 Flatbed upper front cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 Flatbed lower front cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 ADF base cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 ADF main assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 ADF optical assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 ADF scanning lamp (HP LJ 9000mfp/9000Lmfp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 ADF shading filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 Flatbed optical unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 Flatbed scanning lamp (HP LJ 9000mfp/9000Lmfp). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 Switch and solenoids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 ADF feeder cover detection switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Weight solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 Shutter solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 Motors and fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 Pickup motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 Delivery motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 Flatbed motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Power supply assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 ADF fan assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 Flatbed fan assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
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PCB assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF analog processor PCB (HP LJ 9000mfp/9000Lmfp only) . . . . . . . . . . . . . . . . . . . . . . ADF inverter PCB (HP LJ 9000mfp/9000Lmfp only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF intermediate PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF width detection sensor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flatbed inverter PCB (HP LJ 9000mfp/9000Lmfp only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flatbed intermediate PCB). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scanner controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intermediate PCB assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rollers and belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pickup roller (D-roller) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pickup roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Feed roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lower registration roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lower delivery roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Upper delivery roller assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Separation belt assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Separation belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scan engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
207 207 208 209 210 211 212 214 217 222 222 223 224 225 231 232 233 236 238
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Introduction
Removal and replacement strategy
This chapter documents removal and replacement of most field replaceable units (FRUs). Replace parts in the reverse order of their removal. Directions for difficult or critical replacement procedures are included. Remove the following components before removing or replacing assemblies and parts: finishing device print cartridge ADF output bin Before removing or replacing assemblies and parts: make sure the printer is turned off disconnect all cables and cords WARNING! Note Exercise caution when working on the MFP. The MFP can have sharp sheet-metal edges. Note the lengths, diameters, and locations of screws. Be sure to return each screw to its original location during reassembly. Incorrectly routed or loose wire harnesses can interfere with other internal components and can become damaged or broken. Frayed or pinched harness wires can be difficult to locate. When replacing wire harnesses, always use the provided wire loops, lance points, or wire-harness guides. Note Always remove the print cartridge before removing or replacing assemblies and parts. IMPORTANT: Put the print cartridge in the original print cartridge bag, or, if the bag is not available, cover it with a piece of paper. Light can damage the print cartridge.
Electrostatic discharge
CAUTION The MFP contains parts that are sensitive to electrostatic discharge (ESD). Always service the MFP at an ESD-protected workstation, or use an ESD mat.
Watch for the ESD symbol (shown at left) to identify the parts that are sensitive to ESD. Protect these parts by using an ESD wrist strap and protective ESD pouches.
Required tools
The following tools are needed to service this MFP: #2 Phillips screwdriver with magnetic tip Small flatblade screwdriver Small needle-nose pliers ESD mat Penlight CAUTION A PoziDriv screwdriver will damage screw heads on the MFP. Be sure to use a #2 Phillips screwdriver.
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External covers
Control panel (HP LJ 9000mfp/9000Lmfp)
1 2 Open the ADF unit. Insert a small flatblade screwdriver in the slot (callout 1) and pry off the overlay. Repeat for the other side.
1
Figure 55.
Control panel (HP LJ 9000mfp/9000Lmfp) (1 of 3) 3 Insert a small flatblade screwdriver in the notch on the side of the control panel and press the tab (callout 2) while lifting the control panel. Repeat for the other side.
2
Figure 56.
Control panel (HP LJ 9000mfp/9000Lmfp) (2 of 3)
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4
Disconnect the connector (callout 3) from the control panel and remove the panel.
4
3
Figure 57.
Control panel (HP LJ 9000mfp/9000Lmfp) (3 of 3)
To reinstall
Make sure the three alignment tabs (callout 4) are in the slots before completely installing the control panel.
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External covers 149
Control panel (HP LJ 9040mfp/9050mfp/9500mfp)
1 2 Open the ADF unit. Insert a small flatblade screwdriver in the slot (callout 1) and pry off the overlay. Repeat for the other side.
Figure 58.
Control panel (HP LJ 9040mfp/9050mfp/9500mfp) (1 of 3) 3 Insert a small flatblade screwdriver in the notch on the side of the control panel and press the tab (callout 2) while lifting the control panel. Repeat for the other side, and then disconnect the connector on the back of the control panel.
Figure 59.
Control panel (HP LJ 9040mfp/9050mfp/9500mfp) (2 of 3)
To reinstall
Make sure the three alignment tabs (callout 4) are in the slots before completely installing the control panel.
150 Chapter 6 Removal and replacement
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