Page 1: Table Of Contents
AM-900U SERVICE MANUAL No. 00ZAM900U/SME DIGITAL MULTIFUNCTIONAL SYSTEM AM-900 MODEL MODEL SELECTION CODE DESTINATION AM-900 U.S.A./Canada CONTENTS CHAPTER 1. GENERAL DESCRIPTION Circuit description of power supply Specifications ..........1-1 PWB ............5-21 Operation panel..........1-2 Circuit description of CIS unit ......5-22 Transmittable documents .......
Page 2: Model
Paper transport Feed roller (Refer to the P/G No. 3-29) Cleaning as needed —————— (NROLR2333XHZZ) Unit AM-900 5 years or 50,000 prints of early —————— either PRECAUTIONS FOR USING LEAD-FREE SOLDER 1. Employing lead-free solder This model employs lead-free solder.
Page 3: Chapter 1. General Description
(i.e., ITU-T phase C time only). As a part of our policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specifications figures indicated are nominal values of production units. There may be some deviations from these values in individual units.
Page 4: Operation Panel
AM-900U [2] Operation panel QUALITY CONTRAST MENU E-SORT REDIAL ZOOM BROADCAST COPY SCAN DUPLEX SCAN PRINT STOP SPEED ENTER HELP 11 12 13 14 15 16 17 18 19 1. Display 11. SCAN key This displays messages and prompts to help you operate the Press this key to select scan mode.
Page 5: Transmittable Documents
AM-900U [3] Transmittable documents 5. Automatic Document Feeder Capacity Number of pages that can be placed into the feeder at anytime is as 1. Document Sizes follows: Normal size: max. ADF 20 pages Normal size Width 5.8” - 8.5”(148 - 216 mm) Special size: single sheet only (manual feed) Length 5.8”...
Page 6: Installation
AM-900U [4] Installation 2) Releasing the scanner. Before plugging in the power cord, pull the scanner release toward 1. Site selection you to release the scanner lock. • Caution: Plugging in the power cord without releasing the scan- Take the following points into consideration when selecting a site for ner lock may damage the machine.
Page 7: Installing The Toner Cartridge And Drum Cartridge
The starter toner cartridge included with the machine can print approximately 1,500 letter-size pages at 5% page coverage. • When replacing the toner cartridge, use a SHARP AM-90ND toner cartridge. One cartridge can print about 3,000 letter-size pages at 5% coverage.
Page 8: Resetting The Drum Counter
AM-900U 5) Grasp the cartridge handle and insert the toner cartridge into the 4. Resetting the drum counter print compartment, sliding it along the guides. Each time you install a new drum cartridge, follow the steps below to • After inserting the cartridge, press on the arrow mark to mark sure reset the drum counter to zero.
Page 9: Installing The Software
Click the Cancel button to close the window and discon- nect the cable. 7. Setting the paper size 2) Insert the Sharp CD-ROM into your computer’s CD-ROM drive. The machine has been set at the factory to use letter size paper. If you ®...
Page 10 ® , if a warning message appears at any time Note: Do not connect the AM-900 to a hub to which another AM- regarding the Windows logo test or digital signature, be sure to 900 is connected. If this is done, the AM-900 will not operate cor- click Continue Anyway or Yes.
Page 11 In the event that you need to remove the software from your com- puter, open the Control Panel and select Add or Remove Pro- grams (or Add/Remove Programs). Select SHARP AM-900 Series MFP Driver (or Sharpdesk) from the list, and click the Change/Remove button (or the Add/Remove button).
Page 12 AM-900U 9. Clearing a jammed document 10. Clearing jammed printing paper If the original document doesn’t feed properly during transmission or 1) Press the side cover release and then open the side cover copying, or DOCUMENT JAMMED appears in the display, first try pressing .
Page 13 AM-900U 4) If the jammed page cannot be pulled out directly, open the front cover and rotate the white knob in the direction shown to feed the jammed page out into the output tray. 5) After the jammed page has been removed, push the two heater roller release levers back up.
Page 14 Remove the paper and insert it again. “XX”) message still appears, unplug the power cord and call (Refer to Printer error code/ SHARP’s Customer Assistance Center at at 1-877- Scanner error code) 794-8675 (U.S.A. only). BYPASS PAPER! / Paper has been inserted in the bypass tray. If the...
Page 15: Quick Setup Guide
Attach the trays. Make sure you have the following items. If any are missing, contact your dealer or retailer. For detailed instructions IMPORTANT!! on setting up and using the AM-900, Toner Drum Telephone cartridge cartridge see the online guide on the...
Page 16 Scanners and Cameras. (If Scanners and 3. Select SHARP AM-900 and click Properties. Cameras does not appear, click view all Control Panel options). 4. Click the Events tab in the SHARP AM-900 Properties. 2. Right-click the SHARP AM-900 icon and select Properties.
Page 17: Chapter 2. Adjustments
AM-900U AM-900U Service Manual Service Manual Market CHAPTER 2. ADJUSTMENTS [1] Adjustments 1. General Since the following adjustments and settings are provided for this model, make adjustments and/or setup as necessary. 2. Adjustments of output voltage (FACTORY ONLY) 1. Install the power supply unit in the machine. 2.
Page 18 AM-900U 3. High voltage power check 3.1. General Note: Since the parts of this PWB cannot be supplied, change it as a unit. CAUTION DO NOT TOUCH! (VR51) CAUTION HIGH VOLTAGE AREA MAX. 4000V QJ071 VR51 QJ005 VR31 CAUTION - HIGH VOLTAGE The unit's back cover should never be opened by anyone other than a qualified serviceperson.
Page 19 AM-900U 3.2. MC Voltage Check Point GND (-) QJ071 VR51 MC Voltage Check Point (-) (There is danger of an electric shock!) Use Measuring instrument: Input Resistance : more than 100 MΩ QJ005 Maximum Voltage : more than 2 kV VR31 VOLTAGE MC : - 950 V ±...
Page 20 AM-900U 3.3. TC Voltage Check Point GND (-) QJ071 VR51 TC Voltage Check Point (+) (There is danger of an electric shock!) Use High Voltage Tester: Requirement of Measuring instrument: Input Resistance : more than 100 MΩ Maximum Voltage : more than 5 kV VOLTAGE TC (+) : + 3600 V ±...
Page 21 AM-900U 3.4. SV/DV Voltage Check Point and SV (-) Voltage Adjustment Volume GND (-) QJ071 VR51 DV Voltage Check Point (+) VOLTAGE DV (+) : + 300 V ± 5 V (CLEANING) DV (-) : - 220 V ± 5 V (PRINTING) QJ005 VR31 SV Voltage Check Point (+)
Page 22 F3, F4, F5, F6, F7 and F8 to open must also be repaired. If not, F3, F4, F5, F6, F7 and F8 will open again. Replacement parts KAB3202 202 (Sharp code: QFS-L1027YCZZ) KAB5002 251 (Sharp code: QFS-L2021XHZZ) KAB3202 102 (Sharp code: QFS-L0004QCZZ)
Page 23: Diagnostics And Service Soft Switches
AM-900U [2] Diagnostics and service soft switches 1.2. Print diagnosis This diagnosis is concerned with the print which is used for production 1. Entering the diagnostic mode and service support. Entering the diagnostic mode 1.1. Fax diagnosis This diagnosis is concerned with the main body of fax which is used MENU Press , and the following...
Page 24 AM-900U 2. Diagnostic items description 5. Storage of data In the following cases, the data if the soft switches set will be 2.1. Fax diagnosis stored. • It is shifted to set the next soft switch by pressing [ENTER] key. 2.1.1 Soft switch mode •...
Page 25: Memory Clear
AM-900U b) If any key skipped, the following message will be displayed. 2.1.6 Signal send mode 2 The specified signals about V.34 and V.8 mode transmitted in the fol- KEY ERROR !! lowing sequence to check the modem. A key name that is not pressed yet is displayed so that this test can 1.
Page 26 AM-900U 2.1.9 Dial test mode 2.1.12 Gear change mode The mode is used to inspect whether dialing is accurate in two kinds of The gear to drive ADF and flatbed mechanism will be aging continu- dial modes or not. All data which can be dialed in this mode are auto- ously and the number of switching will appear on the LCD.
Page 27 AM-900U 3. Print diagnosis 3.1. Single print In this mode, a sheet with selected pattern is printed. Printing size depends on Paper Size setting in Common Setting. SINGLE PRINT 2: ALL WHITE 3: ALL BLACK [>]Key [>]Key [>]Key [ENTER]Key 4: AREA PATTERN 1: CHECK PATTERN [>]Key [>]Key...
Page 28: Continuous Print
AM-900U 3.2. Continuous print 3.3. Copy aging This mode is used for print aging. This mode is used for COPY Aging. The document on the flatbed or ADF will be scanned at the beginning of each cycle and printed it. The Select the desired pattern and input cycle, counter, pages for aging.
Page 29 AM-900U 3.4.2 Life clear mode 3.6.1 Fan MD time set This mode is used for clearing life counters. This mode is used to set the driving time of the fan motor after stop- ping the main motor. 2: LIFE CLEAR [ENTER]Key [ENTER]Key (a)[ENTER]Key...
Page 30 AM-900U 3.6.3 Bypass temp. 3.7. Test mode This mode is used to set the temperature of fixing when printing from This mode is used for printer aging on the two modes. the bypass tray. TEST MODE BYPASS TEMP. [ENTER]Key [ENTER]Key 1: MOTOR AGING 2: CHARGER ADJUST 3: PAPER FEED...
Page 31 AM-900U 3.7.4 COM test mode 3.7.5 Print size You can check the communication between the main CPU and the This function is prepared for the function in the future. Now there is no printer controller on this mode. Concretely, input the command number meaning.
Page 32 AM-900U 5. Soft switch description 5.1. Soft switch Switch setting and function Initial setting DATA ITEM Remarks Recall interval Binary input No. = 8 4 (Data No.) EX 0 eg. Recall interval is set 5 min. Recall times Binary input No.
Page 33 AM-900U DATA Switch setting and function Initial setting ITEM Remarks Distinctive Ring No. 1 No.2 No. 3 No. 4 RING1 RING2 RING3 RING4 RING5 Time display format 24 hours 12 hours-AM/PM Date display format Month-Day-Year Day-Month-Year Summer time (Daylight saving) Flatbed document size of TX LETTER mode...
Page 34 AM-900U DATA Switch setting and function Initial setting ITEM Remarks Action when RTN received Handle to no error Handle to error Reserved Reserved Reserved Reserved V.34 mode function in case of manual communication V.34 mode function V.34 control channel communica- 2400bps 1200bps tion speed...
Page 35 AM-900U DATA Switch setting and function Initial setting ITEM Remarks DTMF output level (High) Binary input No. = 16 8 4 2 1 2 3 4 5 (Data No.) EX 0 1 1 0 0 SW13 eg. Signal transmission level is set to -10dBm Reserved Reserved Reserved...
Page 36 AM-900U DATA Switch setting and function Initial setting ITEM Remarks Key push sound Line monitor type Fax and Dial dial only Pause time 4sec 2sec Ringing Display (if ringer volume is OFF) SW18 Dial tone detection (before auto- dial) Busy tone detection (after auto- dial) Recall Control (for FCC Part68) Line monitor...
Page 37 AM-900U DATA Switch setting and function Initial setting ITEM Remarks Paper size at tray Letter Legal No. 1 No. 2 No. 3 SW23 No. 4 Reserved Reserved Reserved Reserved Automatic reduce of receive 100% Auto reduce Reserved Reserved Reserved SW24 Reserved Reserved Reserved...
Page 38 AM-900U DATA Switch setting and function Initial setting ITEM Remarks Reserved Reserved Reserved Reserved SW28 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW29 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW30 Reserved Reserved Reserved Reserved USB high speed setting Disable Enable Reserved...
Page 39 AM-900U DATA Switch setting and function Initial setting ITEM Remarks Reserved Reserved Reserved Reserved SW35 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW36 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW37 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW38 Reserved...
Page 40 AM-900U DATA Switch setting and function Initial setting ITEM Remarks Reserved Reserved Reserved Reserved SW42 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW43 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW44 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW45 Reserved...
Page 41 AM-900U DATA Switch setting and function Initial setting ITEM Remarks Reserved Reserved Reserved Reserved SW49 Reserved Reserved Reserved Reserved Reserved Reserved Reserved SW50 Reserved Reserved SW99 Reserved Reserved Reserved 2 – 25...
Page 42 AM-900U 5.2. Soft switch function description SW5 No. 5 Dial mode Switch the type according to the telephone circuit connected to the SW1 No. 1 ~ No. 4 Recall interval facsimile. Choice is made for a recall interval for speed and rapid dial numbers. 0: PULSE DIAL Use a binary number to program this.
Page 43 AM-900U SW7 No. 4 Footer print SW9 No. 7 V.34 mode function When set to "1", the date of reception, the sender machine No., and Used to select the V.34 mode for communication when set to “1” com- the page No. are automatically recorded at the end of reception. munication method is V.34 mode.
Page 44 AM-900U SW14 No. 6 ~ No. 8 Reserved SW21 No. 2 DTMF sending by panel test mode Set to "0". With this switch set to “1”, the DTMF signal is sent when a numeric key is pressed in the panel test mode. SW15 No.
Page 45 AM-900U SW25 No. 7, No. 8 Copy default center contrast (for PHOTO) SW31 No. 7, No. 8 Reserved When the copy scanning quality is set to the PHOTO mode, this switch Set to "0". is used to set the reference contrast of the center value for the default SW32 No.
Page 46: Troubleshooting
AM-900U [3] Troubleshooting • Apply line equalization SOFT SWITCH 10-7, 8. May be used in case [1] [2] [3] [4]. Refer to the following actions to troubleshoot any of the problems • Slow down the transmission speed SOFT SWITCH 10-1, 2, 3, 4. mentioned in 1-4.
Page 47: Error Code Table
AM-900U [4] Error code table 1. Communication error code table 1.1. G3 Transmission Code Final received signal Error Condition (Receiver side) Incomplete signal frame Cannot recognize bit stream after flag NSF, DIS Cannot recognize DCS signal by echo etc. Cannot recognize NSS signal (FIF code etc.) Disconnects line during reception (carrier missing etc.) Disconnects line by fall back Disconnects line during reception of multi page...
Page 48: Chapter 3. Mechanical Description
AM-900U AM-900U Service Manual Service Manual Market CHAPTER 3. MECHANICAL DESCRIPTION [1] Mechanical description 3.2. Automatic document feed 1) Use of the paper feed roller and separation rubber plate ensures 1. Facsimile block error-free transport and separation of documents. The plate spring presses the document to the paper feed roller to assure smooth 1.1.
Page 49 AM-900U 4. Paper path Document input Document exit Fusing unit Print exit Optical unit (LSU) Drum cartridge Envelope Paper(250 sheets) Toner cartridge Fig. 4 5. Components layout Fig. 5 PARTS NAME PARTS NAME Feed roller Drum cartridge Transfer roller Optical unit (LSU) Transfer pinch roller Fusing unit Document feeder tray...
Page 50 AM-900U 6. Switch/Sensor layout Fig. 6 PARTS NAME TYPE DESCRIPTION Front sensor Microcircuit When the document is set up in the hopper, the front sensor is on. ORG sensor Microcircuit When the ORG sensor is on, the document is fed and scanning will be started.
Page 51 AM-900U 7. Scanner drive block and diagram 7.1. Overall layout Drive switching unit Lever Scanner unit System gear Hold lever Gear Hold rib Home position sensor 7.2. Gear layout Motor gear (drive source) Sheet scan drive side gear train Planet gear A Scan unit drive side gear train System gear Planet gear B...
Page 52 AM-900U 7.3. Fixed scan mode Motor gear Sheet scan drive side gear train (drive source) Planet gear A Scan unit drive side gear train Counterclockwise rotation: The scanner unit moves toward the sheet scan position. (Clockwise rotation: The scanner unit moves toward the fixed scan position.) System gear Planet gear B...
Page 53 AM-900U 7.5. Switching operation (1) from the sheet scan mode to the fixed scan mode Sheet scan drive side gear train Motor gear (drive source) Planet gear A Scan unit drive side gear train Clockwise rotation: switching operation System gear Planet gear B Locking rib (Scanner unit)
Page 54 AM-900U 7.7. Switching operation (3) from the sheet scan mode to the fixed scan mode Sheet scan drive side gear train Motor gear (drive source) Planet gear A Scan unit drive side gear train Clockwise rotation: switching operation System gear Planet gear B Locking rib (Scanner unit)
Page 55 AM-900U 7.9. Switching operation (1) from the fixed scan mode to the sheet scan mode Motor gear Sheet scan drive side gear train (drive source) Planet gear A Scan unit drive side gear train Counterclockwise rotation: The scanner unit moves toward the sheet scan position. System gear Planet gear B Scanner unit...
Page 56 AM-900U 7.11. Switching operation (3) from the fixed scan mode to the sheet scan mode Sheet scan drive side gear train Motor gear Planet gear A (drive source) Scan unit drive side gear train Counterclockwise rotation: switching operation System gear Planet gear B Pin A Cam groove A...
Page 57: Print Process
AM-900U 8. Print process 8.1. Image forming process Normal paper is used as print paper. A laser beam is used to expose on the OPC surface to form latent electrostatic images, which are developed into visible images (toner images) and are transferred on paper.
Page 58 AM-900U 8.4. Image forming process diagram Scanning Lens Laser diode mirror High voltage Mirror circuit Main charger Exposure brush Toner Cleaning, Charge Development cleaning Developing High voltage roller circuit Paper exit Fusing Separation Transfer Paper feed roller Paper tray Paper Separation electrode Transfer roller...
Page 59 AM-900U 8.5. Functions and operations of major parts 8.5.2 Developing unit Latent electrostatic images formed by laser beam on the OPC drum are developed to visible images by the developing unit. Toner is filled in the developing unit. Paper Optical unit(LSU) a.
Page 60 AM-900U 8.6. Image forming operation STEP 2 (Exposure): Laser beam scanning light corresponding to the print data is radiated on the OPC drum. STEP 1 (Cleaning, Charging): Residual toner the OPC drum is Positive and negative charges are generated in the OPC drum CGL stirred and negative charges are exposed with the laser beam.
Page 61 AM-900U On the other hand, when an area of OPC drum which was not STEP 3 (Development): Toner is attached to the latent electrostatic exposed to the laser beam and did not lose its charge comes in con- images on the OPC drum to form visible tact with the developing roller, any residual toner attached to the OPC images.
Page 62 AM-900U STEP 5 (Paper separation): The paper is separated from the OPC STEP 6 (Discharge): The drum surface is discharged to facilitate drum. cleaning of the drum surface. (The remaining toner is easily collected by the main charger roller.) Main charger roller (brush) Paper Separation...
Page 63 AM-900U 8.7. OPC drum surface potential 8.7.2 OPC drum surface potential and developing bias voltage in development 8.7.1 Transition of OPC drum surface potential by print operation During Start Stop developing Dark area Laser Dark potential area beam potential -950V -180V Developing bias...
Page 64: Timing Chart
AM-900U 9. Timing chart 9.1. Print process PRINT PROCESS Pre-Printing period After Printing period Printing period Soft Control Signal max 5.0sec 3.0sec One or more page printing Name (Polygon motor) (Main motor) MCON Signal (Main charger) PWMSIN Signal (Superposing) (Duty) 5sec TC (Transfer TCON...
Page 65: Disassembly And Assembly Procedures
AM-900U [2] Disassembly and assembly procedures • This chapter mainly describes the disassembly procedures. For the assembly procedures, reverse the disassembly procedures. • Easy and simple disassembly/assembly procedures of some parts and units are omitted. For disassembly and assembly of such parts and units, refer to the Parts List.
Page 66 AM-900U Parts list (Fig. 2) PWB unit and PWB plate Part name Part name Mechanism unit Screw (3x8) Connector Earth cable Screw (3x8) High voltage PWB unit Screw (3x10) Screw (3x10) Control PWB unit Screw Screw (3x10) AC cord earth cable Screw (3x8) Screw (3x8) LIU PWB unit...
Page 67 AM-900U Parts list (Fig. 3) Flatbed unit Part name Mechanism unit Screw (4x12) Flatbed unit Flatbed unit 2. Front cover open 1. Right cover open Mechanism unit Fig.3 3 – 20...
Page 68 AM-900U Flatbed cover/Scanner unit/ Flatbed upper/ Parts list (Fig. 4) Drive unit/Flatbed lower Part name Part name Flatbed cover Hook NOTE: For disassembly of the inside of the unit, Scanner unit Screw (3x6) Screw (3x12) refer to the exploded view in the parts Earth spring Earth spring 1 Screw (3x10)
Page 69 AM-900U Right cover/Front cover/Paper exit unit/ Parts list (Fig. 5) Optical unit(LSU)/Fusing unit/ Part name Part name Mechanism unit Screw (3x10) NOTE: For disassembly of the inside of the unit, Right cover pivot Screw (3x8) Earth cable refer to the exploded view in the parts Right cover Screw (3x10) Connector...
Page 70 AM-900U Parts list (Fig. 6) Wire treatment Part name Band (100mm) Screw Wire holder Core (F2145) Screw (3x8) Core (F2146) Earth cable The CNLSR cable pass to the core 2 times. CNLSR CNPN CNFRT CNSCM High voltage CNRTH CNCIS CNORG PWB unit CNPM CNPOUT1...
Page 71: Block Diagram
AM-900U AM-900U Service Manual Service Manual Market CHAPTER 4. DIADRAMS [1] Block diagram 4 – 1...
Page 72: Wiring Diagram
AM-900U [2] Wiring diagram 4 – 2...
Page 73: Point-To-Point Diagram
AM-900U [3] Point-to-point diagram CNCIS CNCIS CNPN CNPN1 CNLCD1 GND(VDD) VLED LEDON +3.3V +3.3V +3.3V +3.3V VDD(SEL) VREF VREF(GND) /STRB7 /STRB7 /SEN0 /SEN0 /STRB6 /STRB6 V-LED VLED /SEN1 /SEN1 N.C. N.C. B-GND BLED_GND /STRB5 /STRB5 N.C. N.C. G-GND GLED_GND /SEN2 /SEN2 N.C.
Page 74: Circuit Description
AM-900U AM-900U Service Manual Service Manual Market CHAPTER 5. CIRCUIT DESCRIPTION [1] Circuit description [2] Circuit description of control PWB 1. General description 1. General description The compact design of the control PWB is obtained by using MFP The control PWB is composed of the following blocks.. ASIC OA-2000 in the main control section and high density printing of 1.1.
Page 75 AM-900U OA-2000 (IC1) Terminal description (1/4) Pin name Pin Description GP_L6 Bidirectional General Purpose IO GP_L7 Bidirectional General Purpose IO GP_M0 Bidirectional General Purpose IO GP_M1 Bidirectional General Purpose IO GP_M2 Bidirectional General Purpose IO GP_M3 Bidirectional General Purpose IO GP_M4 Bidirectional General Purpose IO...
Page 76 AM-900U OA-2000 (IC1) Terminal description (2/4) Pin name Pin Description CORE_VDD18 +1.8V digital Power GND digital Ground GP_F0/PO_PAGE_SYNC Bidirectional General Purpose IO/Print Page Synchronous Input GP_F1/PO_LINE_SYNC Bidirectional General Purpose IO/Print Line Synchronous Input GP_F2 Bidirectional General Purpose IO GP_F3 Bidirectional General Purpose IO IO_VDD33 +3.3V digital...
Page 77 AM-900U OA-2000 (IC1) Terminal description (3/4) Pin name Pin Description SDRAM_CAS_L Bidirectional SDRAM Column Address Strobe Command SDRAM_WE_L Bidirectional SDRAM Write Enable GND digital Ground GP_H0/PI_TGEN0 Bidirectional General Purpose IO/Timing Generator for CIS GP_H1/BASE_CLK Bidirectional General Purpose IO/Base Clock Input GP_H2/PI_TGEN2 Bidirectional General Purpose IO/Timing Generator for CIS...
Page 78 AM-900U OA-2000 (IC1) Terminal description (4/4) Pin name Pin Description DEV_RSDP Output analog USB Device Interface DEV_DP Bidir.analog USB Device Interface DEV_DM Bidir.analog USB Device Interface DEV_AVSS GND analog Ground DEV_RREF Analog USB Device Reference Input DEV_AVDD33 +3.3V analog Power DEV_VSENSE Input USB Device Interface...
Page 79 AM-900U 3) Configurations, Signaling Rates, and Data Rates Configuration Modulation Carrier Fre- Data Rate Symbol Rate Bits/Symbol Bits/Symbol Constellation quency (Hz) ± (bps) ± 0.01 % (Symbols/Sec.) Data Points 0.01 % V.90 PCM — 56000 R/V.34 8000 Dynamic — — rates T (Note 4) Note 2...
Page 80 AM-900U 4) FM336Plus (IC18) Terminal description Name Interface Name Interface — RESERVED — RESERVED HOST Interface VSUB — HOST Interface — HOST Interface — OHOST Interface — HOST Interface SLEEP Modem Interconnect HOST Interface VDD1 — /RDCLK DTE Serial Interface —...
Page 81 AM-900U 2.1.4 Scanner I/F block 1) CIS I/F block The CIS is controlled through buffer (IC14) by Main CPU (IC1), and the output video signal from CIS is input into AFE block of Main CPU (IC1). CIS LED is controlled through LED driving circuit (IC36, Q29~Q34) by Main CPU (IC1).
Page 82 AM-900U 2.2. Printer control block Timer V (8bit timer) Timer W (16bit timer) Printer control block is composed by a single chip microcomputer "HD64F36049" which built in a 16bit CPU, 96kbyte flash ROM and Timer Z (16bit timer) 3kbyte RAM. 14bit PWM) 2.2.1 HD64F36049 (IC21): pin-80 QFP Watchdog timer...
Page 83 AM-900U HD64F36049 (IC21) Terminal description TYPE SYMBOL PIN NO. FUNCTIONS Power supply pins Power supply pin. Connect this pin to the system power supply. 9, 50 Ground pin. Connect this pin to the system power supply (0V). AVcc Analog power supply pin for the A/D converter. When the A/D converter is not used, connect this pin to the system power supply.
Page 84 AM-900U This printer CPU executes the print action in accordance with the com- mand from Main controller. Printer CPU controls each component of Laser Beam Printer (LBP) as follows. 1) Main Motor control 2) Pickup Motor control 3) Fuser control 4) High Voltage Generator control 5) Laser Scanning control 6) Sensor monitor...
Page 85 AM-900U 2.2.3 Signal assignment to the Printer CPU pins Mechanism control CPU Control unit Description Signal Pin No. OA-2000 I/F /STS Video I/F signals to/from the main CPU (OA-2000) /SCLK /CMD /PCURES RESET /DCRDY /DREADY /EPRDY /VSYNC /CPRDY /DPAGE /DSRDY APC_AUTO TMOV APC timing generation signal for line cycle...
Page 86 AM-900U 1) Main Motor control: Control the rotation of Main Motor and its The laser beam scanning light expose the OPC drum correspond- mechanism ing to the print data. The circuit of Optical unit (LSU) is composed with the scanning motor drive block and the laser beam drive block. Main Motor is the stepper motor and drives the whole of the mech- anism of LBP.
Page 87 AM-900U 2.3. Power section The Control PWB requires multi voltage (+1.8V, +3.3V, +5V, +24V, +24VH). +3.3V, +5V, +24V and +24VH are supplied from the power supply unit, and +1.8 V are generated by the regulator (IC8). +3.3VR is generated by regulator (IC9) on the Control PWB, is the exclusive use as clean power for scanner.
Page 88 AM-900U 3. Printer mechanism control block 3.1. Unit control 3.1.1 High voltage unit control The high voltage unit outputs the following voltages: • Main charger voltage (DC-950V + AC760V peak to peak) • Transfer charger voltage (DC+3600V + AC760V peak to peak) •...
Page 89 AM-900U 3.1.3 Laser scanning unit 1) Signal functions This unit controls the laser beam power and laser beam scanning. PMCLK Clock signal for driving the scanning motor. (2659.57Hz) The control is performed with the signals inputted outputted to or from the CPU and Logic circuit.
Page 90 AM-900U b) Laser Drive circuit operation timing 3.1.4 Fusing unit control The fusing section is heated by the heater lamp (500W). The heater Laser drive circuit/LD Drive Circuit lamp is controlled (turned on/off) to keep the optimum temperature. nHSYNC The following signals are outputted by the CPU and Logic circuit for nLDEN control.
Page 91 AM-900U b) PC printing • Temperature control is started when PC starts printing. • Temperature is controlled at 200 °C. (Heater OFF over 200 °C. Heater ON below 200 °C. • After printing, temperature is not controlled. • Fan motor starts revolving from the beginning of temperature control and stops 120 seconds after printing is finished.
Page 92: Circuit Description Of Liu Pwb
AM-900U [3] Circuit description of LIU PWB 1. LIU block operation description 1.1. Block diagram CONTROL TXA2 TXOUT TXOUT SURGE DIODE ACTIVE PROTECTION TXA1 LINE BRIDGE CHOKE CIRCUIT MODEM RXIN RXIN (FM336PLUS) DETECTOR EXT.TEL DETECTOR VREF IC10 EXHS EXHS PB_DATA LOGIC IC BZOUT OA-2000...
Page 93 AM-900U 1.3.4 CML relay [Signals for status recognition according to input signals] The CML relay switches over connection to the matching transformer Signal Name Function T1 while the FAX is being used. Incoming call (CI) detection signal H: The handset or external telephone is in the 1.3.5 Matching transformer on-hook state.
Page 94: Circuit Description Of Power Supply Pwb
AM-900U [4] Circuit description of power supply PWB This power supply unit has the function to convert the AC120V (60Hz) 5. +24 V SUB output circuit block to DC+24V, and provide these output to the equipment. The following This circuit block rectifies and smoothes the high-frequency pulse volt- explains the function of each block.
Page 95: Circuit Description Of Cis Unit
AM-900U [5] Circuit description of CIS unit 3.2. Timing chart 2 1) Reading color document 1. CIS 1.7ms 1.7ms 1.7ms CIS is an image sensor which scans the original paper in close contact with the full-size sensor, being a color type with the pixel number of CIS R LED(*) 5,148 dots and the scanning density of 600 dpi.
Page 96: Circuit Description Of Operation Panel Pwb
AM-900U [6] Circuit description of operation panel PWB 1. Operational description 1) Operation panel PWB The operation panel PWB consists of 30 keys. This PWB includes the eight STRB lines (8bit) and the four SEN lines (4bit). The eight STRB lines are controlled by OA-2000 (CPU) on control PWB and the four SEN lines return signals to control PWB.
Page 97: Data Flow Chart
AM-900U [7] Data flow chart 1. COPY Control PWB OA-2000 LSU I/F controlled Laser Scan Printing (IC1) by Printer CPU Unit SDRAM (IC4) 2. FAX/SEND Control PWB OA-2000 FAX MODEM PSTN LIU PWB (IC1) (IC18) TEL LINE SDRAM (IC4) 3. FAX RECEIVE Control PWB LSU I/F OA-2000...
Page 98: Troubleshooting
AM-900U [8] Troubleshooting 1. Printer error code SYSTEM ERROR [P1] The roller sensor could not detect its home position after driving the pick up motor for the specified period. The roller sensor could not become NOT-Active after passing the specified period from picking up paper. The printer controller detected the optical unit (LSU) SYSTEM ERROR [P2] error.
Page 99 AM-900U 3. Troubleshooting of control PWB Display Error Not rotate SYSTEM ERROR Pickup Motor Error IC21 (Printer CPU) on LCD or shortage torque [P1] IC32 (driver) R265~R268 F6 (fuse) D15 (zener diode) R331~R334 Not detect roller sensor IC21 (Printer CPU) CNROLSNS (Connector) C,R on route...
Page 100 AM-900U SYSTEM ERROR IC22 Thermister Error [P3] (Regulator IC) CNRTH (Connector) C, R on route of CNRTH~IC21 D13 (Diode) SYSTEM ERROR Printer Control Microcomputer IC21 (Printer CPU) [P4] ROM/RAM Error SYSTEM ERROR Fuser Temp. Temp. detect IC21 (Printer CPU) [P5] too High Error CNRTH (Connector)
Page 101 AM-900U SYSTEM ERROR Printer Controller X5 and Communication Error [P7] fail its peripheral parts CNICEM-9pin (Connector) IC21 (Printer CPU) Main to Printer Con. (Main Controller) Communication Error IC14 and its peripheral parts C, R on route of IC14~IC1 IC21 (Printer CPU) IC15 and its peripheral parts C, R on route...
Page 102 AM-900U VIDEO Signal fail IC9 (Regulator) IC1 (Main CPU) IC14 (Buffer) C,R on route of CNCIS-1pin~IC1 C,R on route of IC1~IC14~CNCIS C,R on route of IC9~CNCIS Analog Front End fail IC1 (Main CPU) IC9 (Regulator) Vref Decoupling C C19/C22/C27~C30 C,R on route of IC9~IC1 IC1 (Main CPU) Link Error...
Page 103 AM-900U LCD not display correctly LCD control ERROR IC1 (Main CPU) (Motor initialize OK) CNPN Connector C,R on route of IC1~CNPN LCD not display correctly System ERROR IC1 (Main CPU) (Motor not initialized) IC4 (SDRAM) IC5 (RESET IC) IC6 (FLASH) X3 (X'tal) and around C,R on route of IC1~IC4 and IC6...
Page 104 AM-900U FAX communication TX/RX failure IC1 (Main CPU) failure IC18 (Modem) IC19 (OP AMP) CNLIU connector F4 (fuse) C,R on route of IC1~IC18 & CNLIU C,R on route of IC18~IC19~CNLIU Power line +24VH, +5VA Communication Speed IC18 (Modem) abnormal IC19 (OP AMP) C, R on route of IC18~IC19~CNLIU Buzzer / Ringer...
Page 105 AM-900U Front Sensor ADF SCAN DOCUMENT not feed IC1 (Main CPU) sense failure paper-feed failure (Flatbed scan start) CNFRT connector C,R on route of CNFRT~IC1 "DOCUMENT JAMMED" ORG Sensor IC1 (Main CPU) message sense failure CNORG connector C,R on route of CNORG~IC1 Scanner motor stall IC1 (Main CPU)
Page 106 AM-900U Print data X2(27.5549MHz X'tal) Scalling/position Horizontal incorrect timing error and its peripheral X2~IC3 ~ IC1-133pin Synchronous signal CNLSR connector fail CNLSR-8pin~IC27 ~ IC14~IC1-68pin LSU motor control CNPM connector fail X5(20MHz X'tal) and its peripheral CNPM-1pin~IC21-47pin IC34 (motor driver) Vertical Main Motor error and its peripheral IC34-16pin~IC21-53pin...
Page 107 AM-900U IC34 (motor driver) Main motor Error Not rotate and its peripheral C,R on route of IC34~IC21 F7 (fuse) CNMM connector C on route of CNMM~IC34 IC34 (motor driver) Stall and its peripheral C,R on route of IC34~IC21 5 – 34...
Page 108: Control Pwb Circuit
AM-900U AM-900U Service Manual Service Manual Market CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT [1] Control PWB circuit 1. Main Controller Block (1a/10) 1/10 Main Controller Block(1/2) (4-F1) PDATA GP_L0/PO_DATA0 ROM_CS_L (5-H5) /SPMUTE GP_L1/PO_DATA1 BZCONT (5-H4) GP_L2 SDRAM_DATA0 VOLA (5-H5) GP_L3 SDRAM_DATA1 (5-H5)
Page 109 AM-900U 2. Main Controller Block (1b/10) Main Controller Block (2/2) 1/10 SDRAM_DATA[15:0] (2-B3)(2-E6) /ROM_CS (2-C2) SDRAM_DATA0 SDRAM_DATA1 33 x4 SDRAM_DATA2 SDRAM_DATA3 +3.3V SDRAM_DATA4 SDRAM_DATA5 N.M. SDRAM_DATA6 33 x4 SDRAM_DATA7 N.M. SDRAM_DATA8 RTC_DATA VBAT (1-C3) SDRAM_DATA9 33 x4 SDRAM_DATA10 RTC_CLK (1-C3) SDRAM_DATA11 N.M.
Page 110 AM-900U 3. Memory Block (2/10) R100 6 – 3...
Page 111 AM-900U 4. User I/F, Regulator Block (3/10) N.M. 100P 100P 100P 100P 100P 100P R114 R113 R112 R111 N.M. 100P 100P 100P 100P 100P 100P 100P 6 – 4...
Page 112 AM-900U 5. Scanner & Printer I/F Block (4/10) CNCIS CNFRT CNORG CNHPS CNSCM N.M. C122 N.M. C121 N.M. C120 N.M. C119 N.M. N.M. N.M. N.M. 6 – 5...
Page 113 AM-900U 6. Modem Block (5/10) CNSP 1000P C190 CNLIUI 6 – 6...
Page 114 AM-900U 7. Printer Controller Block (6/10) R276 R274 R275 R273 R246 R245 R244 R243 6 – 7...
Page 115 AM-900U 8. Optical Unit (LSU) Control Block (7/10) N.M. C278 N.M. C277 N.M. C276 6 – 8...
Page 116 AM-900U 9. High Voltage Control & Thermistor Input Block (8/10) R313 R312 R311 6 – 9...
Page 117 AM-900U 10. Driver Block (9/10) (1608) 0.01U/50V C240 (1608) 0.01U/50V C239 (1608) 0.01U/50V C238 (1608) 0.01U/50V C237 UDZS6.2B 6 – 10...
Page 118 AM-900U 11. Sensor Connector & Power Supply Block (10/10) R378 R377 R376 6 – 11...
Page 119 AM-900U 12. Control PWB parts layout (Top side) X3468XH-4Y The CONTROL PWB of the model employs lead-free solder. 6 – 12...
Page 120 AM-900U 13. Control PWB parts layout (Bottom side) The CONTROL PWB of the model employs lead-free solder. 6 – 13...
Page 121: Liu Pwb Circuit
AM-900U [2] LIU PWB circuit 1. LIU PWB Circuit 6 – 14...
Page 122 AM-900U 2. LIU PWB parts layout (Top side) The LIU PWB of the model employs lead-free solder. 6 – 15...
Page 123 AM-900U 3. LIU PWB parts layout (Bottom side) The LIU PWB of the model employs lead-free solder. 6 – 16...
Page 124: Power Supply Pwb Circuit
AM-900U [3] Power Supply PWB circuit 1. Power Supply PWB circuit C104 C107 C106 470/16 C302 HZ5.6P D275 D102 N.M. R201 R131 R509 R508 120/16 2.7K R130 C271 C305 R294 R507 R505 3.3K R295 TLP421F 7.5K R293 R292 1.2K HZS3 C304 D291 R274...
Page 125 AM-900U 2. Power Supply PWB parts layout (Top side) CNHT J103 CNPW C271 TRA1 BEA104 D102 C502 D151 J113 F103 C151 BEA103 C5 T1 F101 D275 BEA101 C103 C302 C301 NTC1 D271 BEA1 D101 L271 D277 D291 J104 C108 C101 CNAC D110 J102...
Page 126: High Voltage Pwb Circuit
AM-900U [4] High Voltage PWB circuit 1. High Voltage PWB circuit R103 VR31 R33 R34 R35 R36 R46 R76 R84 C56 OPTION VR51 OPTION OPTION R100 6 – 19...
Page 127 AM-900U 2. High voltage PWB parts layout (Top side) Note: Since the parts of this PWB cannot be supplied, change it as a unit. QJ071 VR51 QJ005 VR31 CAUTION - HIGH VOLTAGE The unit's back cover should never be opened by anyone other than a qualified serviceperson.
Page 128 AM-900U 3. High Voltage PWB parts layout (Bottom side) Note: Since the parts of this PWB cannot be supplied, change it as a unit. R103 R101 R79 R78 R102 R32 R31 R88 R89 R90 R33 R35 D57 D56 D55 CAUTION - HIGH VOLTAGE The unit's back cover should never be opened by anyone other than a qualified serviceperson.
Page 129: Operation Panel Pwb Circuit
AM-900U [5] Operation Panel PWB circuit 1. Operation Panel PWB circuit CNPN1 LED1 GL3HD8 6 – 22...
Page 130 AM-900U 2. Operation Panel PWB parts layout Note: Since the parts of PWB cannot be supplied, change it as a unit. The OPERATION PANEL PWB of the model employs lead-free solder. 6 – 23...
Page 131: Chapter 7. Operation Flowchart
AM-900U AM-900U Service Manual Service Manual Market CHAPTER 7. OPERATION FLOWCHART [1] Protocol Receive side Transmitter side G3 communication (Document inserted into document sensor during standby) To recording position Document inserted to the reading position (DCS) (DCS) 1st page Next page insert command Cut line printed Cut line printed...
Page 132: Power On Sequence
AM-900U [2] Power on sequence START CPU initialized D-RAM initialized Gate array initialized PC I/F initialized When option board is connected. START+STOP key ? “MEMORY CLEAR” “EXECUTE ?” display COPY key ? 1 key ? “PLEASE WAIT A MOMENT” “PLEASE WAIT A MOMENT” display display Other key ?
Page 133: Service Tools
AM-900U AM-900U Service Manual Service Manual Market CHAPTER 8. OTHER [1] Service tools 1. List PRICE PARTS CODE DESCRIPTION REF NO. RANK CPWBS3511SC01 Extension board unit with FFC connector 4 pcs. QCNCW2556SC1B FFC CONNECTOR CNCIS A/B QCNCW2556SC1F FFC CONNECTOR CNPN A/B QCNWK383CSCZZ PANEL EXTENSION CABLE (16PIN) CNPN...
Page 134: Rewriting Version Up The Flash Rom
[2] Rewriting version up the FLASH ROM 1. Preliminary setting for USB connection Printer and Scanner driver should be installed to your PC to be able to communicate between your PC and AM-900 via USB. (Refer to the Setup guide) ↓...
Page 135: Parts Guide
AM-900U PARTS GUIDE AM-900 MODEL MODEL SELECTION CODE DESTINATION AM-900 U.S.A./Canada CONTENTS Packing material & Accessories Cabinet,etc. Control PWB unit Flatbed unit [10] LIU PWB unit Scanner unit [11] Power supply PWB unit Paper exit unit [12] High voltage PWB unit...
Page 136 AM-900U [1] Cabinet,etc. CNLSR FLATBED UNIT EARTH CABLE C PAPER EXIT UNIT AC CORD PRINTER EARTH CABLE DRIVE UNIT FUSING UNIT 32 37 64 76...
Page 137 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [1] Cabinet,etc. Control PWB unit(Within ROM) DCEKC781UXHZZ LIU PWB unit DCEKL422CXH02 Flatbed cover GCOVA2510XHSA Hinge,left LPLTP3335XHSA Hinge,right LPLTP3336XHSA Hinge shaft NSFTP2393XHZZ Flatbed cushion PCUSS2226XHZZ Back sheet PSHEZ3855XHZZ Hopper spring MSPRC3301XHZZ Pinion gear NGERP2318XHZZ Static brush PBRS-2074XHZZ...
Page 138 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [1] Cabinet,etc. Laser caution label TCAUZ2044XHZZ Front cover GCOVA2515XHSA AC cord bracket LANGF2870XHZZ Band LBNDJ2006XHZZ PWB plate LPLTP3346XHZZ Right cover pivot PGIDM2678XHZZ Front cover pivot PGIDM2700XHZZ AC cord ass'y QACCD2095XHZZ Earth cable QCNWN261CXHZZ RCORF2146XHZZ Core...
Page 139 AM-900U [2] Flatbed unit 8 56 DRIVE UNIT SCANNER BELT PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [2] Flatbed unit Operation panel PWB unit DCEKP304DXH01 LCD unit RUITZ2001XHZZ Tact switch [SW] QSW-K0005AWZZ Flatbed,upper GCABA2451XHSA Sensor cover GCOVA2512XHZZ Function key JBTN-2483XHSA 12 key JBTN-2484XHSA...
Page 140 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [2] Flatbed unit Sheet glass PGLSP2064XHZZ ADF glass PGLSP2065XHZZ Rear book sheet PSHEZ3854XHZZ Blind fold sheet PSHEZ3866XHZZ Book long double tape PTPEZ2116XHZZ Book short double tape PTPEZ2117XHZZ ADF double tape PTPEZ2118XHZZ Panel cable QCNWN245CXHZZ ORG sensor cable...
Page 141 AM-900U [3] Scanner unit PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [3] Scanner unit LPLTG3307XHZZ Separate rubber LPLTP2790XHZZ Separate plate MARMP2025XHZZ Feed plate arm MSPRD3564XHZZ Feed spring Separate spring MSPRT3563XHZZ PGIDM2681XHSA Guide middle upper Front sensor cable QCNWN255CXHZZ Earth cable C QCNWN260CXHZZ Front sensor QSW-Z2250XHZA...
Page 142 AM-900U [4] Paper exit unit PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [4] Paper exit unit MSPRD3574XHZZ Pinch roller spring 1 Pinch roller spring 2 MSPRD3575XHZZ NGERH2466XHZZ Idler gear,32Z Idler gear,50Z NGERH2602XHZZ Idler gear,17Z(17Z) NGERH2603XHZZ Feed roller gear,15Z NGERH2662XHZZ PO pinch roller NROLP2332XHZA Paper exit roller...
Page 143 AM-900U [5] Fusing unit...
Page 144 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [5] Fusing unit Fuse holder LHLDZ2297XHZZ Fuse sheet PSHEP3853XHZZ Fuse sponge PSPO-2024XHZZ Fuse-2 QFS-T2020XHZZ Heat roller bearing 1 LBSHP2162XHZZ Heat roller bearing 2 LBSHP2167XHZZ FU bearing LBSHP2168XHZZ FU frame,left LFRM-2265XHZZ FU frame,right LFRM-2266XHZZ FU terminal LPLTP3348XHZZ...
Page 145 AM-900U [6] Printer drive unit 33 30 Pin(Temporary part) PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [6] Printer drive unit Printer drive frame LFRM-2263XHZZ Printer drive bracket LPLTP3343XHZZ Planet lever A MLEVP2409XHZZ Planet gear spring MSPRC2735XHZZ OPC earth spring MSPRC3519XHZZ Coupling spring MSPRC3547XHZZ...
Page 146 AM-900U [7] Drive unit PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [7] Drive unit Drive frame LFRM-2262XHZZ Motor plate LPLTP3340XHZZ Planet lever A MLEVP2405XHZZ Planet lever B MLEVP2406XHZZ Planet spring MSPRC2735XHZZ Hold spring MSPRT3571XHZZ Drive belt NBLTK2067XHZZ NGERH2278XHZZ Planet gear Reduction gear NGERH2517XHZZ NGERH2541XHZZ...
Page 147 AM-900U [8] Packing material & Accessories TAPE AC cord TAPE After put to bottom side then fold the top side to lock. TAPE TAPE TAPE TAPE TAPE Setting the Tray Back Guide to PAD-A's hole. TAPE TAPE...
Page 148 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [8] Packing material & Accessories Document feeder tray PHOP-2121XHSA Output tray LPLTP3344XHSA Output sub tray LPLTP3345XHSA Toner cartridge(Initial starter cartridge) DUNT-291DXH01 Drum cartridge(Initial starter cartridge) DUNT-292DXH01 Telephone line cord QCNWG370BXHZZ Packing add.,top,front SPAKA279GXHZZ Packing add.,top,rear SPAKA280GXHZZ...
Page 149 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] Control PWB unit Capacitor(16WV 0.1µ F) [C47] VCKYCZ1CF104Z Capacitor(16WV 0.1µ F) [C48] VCKYCZ1CF104Z Capacitor(16WV 0.1µ F) [C49] VCKYCZ1CF104Z Capacitor(16WV 0.1µ F) [C50] VCKYCZ1CF104Z Capacitor(16WV 0.1µ F) [C51] VCKYCZ1CF104Z Capacitor(16WV 0.01µ F) [C52] VCKYCZ1CB103K Capacitor(10WV 2.2µ...
Page 150 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] Control PWB unit Capacitor(50WV 330PF) [C158] VCKYCZ1HB331K Capacitor(10WV 1µ F) [C159] VCKYCY1AB105K Resistor(1/16W 0Ω ± 5%) [C161] VRS-CY1JB000J Resistor(1/16W 0Ω ± 5%) [C162] VRS-CY1JB000J Capacitor(25WV 2200PF) [C164] VCKYCZ1EB222K Capacitor(25WV 2200PF) [C165] VCKYCZ1EB222K Capacitor(16WV 0.1µ...
Page 151 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] Control PWB unit Capacitor(16WV 10µ F) [C262] VCEAEA1CW106M Capacitor(16WV 0.1µ F) [C264] VCKYCZ1CF104Z Capacitor(16WV 47µ F) [C267] VCEAGA1CW476M Capacitor(16WV 0.1µ F) [C268] VCKYCZ1CF104Z Capacitor(25WV 10PF) [C269] VCCCCZ1EH100D Capacitor(25WV 33PF) [C270] VCCCCZ1EH330J Capacitor(16WV 0.1µ...
Page 152 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] Control PWB unit Transistor(RT1N436C) [Q4] VSRT1N436CT-1 Transistor(RT1N436C) [Q5] VSRT1N436CT-1 Transistor(RT1N436C) [Q6] VSRT1N436CT-1 Transistor(RT1P141C) [Q7] VSRT1P141CT-1 Transistor(RT1N436C) [Q8] VSRT1N436CT-1 Transistor(RT1N436C) [Q9] VSRT1N436CT-1 Transistor(RT1N436C) [Q10] VSRT1N436CT-1 Transistor(RT1N436C) [Q11] VSRT1N436CT-1 Transistor(RT1N436C) [Q12] VSRT1N436CT-1 Transistor(RT1N141C) [Q14] VSRT1N141CT-1...
Page 153 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] Control PWB unit Resistor(1/16W 1KΩ ± 5%) [R98] VRS-CZ1JB102J Resistor(1/16W 0Ω ± 5%) [R100] VRS-CZ1JB000J Resistor(1/16W 0Ω ± 5%) [R103] VRS-CZ1JB000J Resistor(1/16W 4.7KΩ ± 5%) [R104] VRS-CZ1JB472J Resistor(1/16W 4.7KΩ ± 5%) [R106] VRS-CZ1JB472J Resistor(1/16W 33Ω...
Page 154 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] Control PWB unit Resistor(1/16W 150Ω ± 5%) [R213] VRS-CZ1JB151J Resistor(1/16W 0Ω ± 5%) [R216] VRS-CZ1JB000J Resistor(1/16W 3.3KΩ ± 5%) [R217] VRS-CZ1JB332J Resistor(1/16W 10KΩ ± 5%) [R220] VRS-CZ1JB103J Resistor(1/16W 0Ω ± 5%) [R221] VRS-CZ1JB000J Resistor(1/16W 0Ω...
Page 155 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] Control PWB unit Resistor(1/16W 100Ω ± 5%) [R307] VRS-CZ1JB101J Resistor(1/16W 33Ω ± 5%) [R308] VRS-CZ1JB330J Resistor(1/16W 0Ω ± 5%) [R309] VRS-CZ1JB000J Resistor(1/16W 33Ω ± 5%) [R310] VRS-CZ1JB330J Resistor(1/16W 10KΩ ± 5%) [R311] VRS-CZ1JB103J Resistor(1/16W 10KΩ...
Page 156 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [9] Control PWB unit Resistor(1/16W 0Ω ± 5%) [R423] VRS-CZ1JB000J Resistor(1/16W 0Ω ± 5%) [R424] VRS-CZ1JB000J Resistor(1/16W 0Ω ± 5%) [R425] VRS-CZ1JB000J Resistor(1/16W 0Ω ± 5%) [R426] VRS-CZ1JB000J Resistor(1/16W 0Ω ± 5%) [R427] VRS-CZ1JB000J Resistor(1/16W 0Ω...
Page 157 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [10] LIU PWB unit Resistor(1/4W 620Ω ± 5%) [R16] VRD-HT2EY621J Resistor(1/4W 22KΩ ± 5%) [R17] VRD-HT2EY223J Resistor(1/4W 22KΩ ± 5%) [R18] VRD-HT2EY223J Resistor(1/4W 750Ω ± 5%) [R19] VRD-HT2EY751J Resistor(1/4W 22KΩ ± 5%) [R20] VRD-HT2EY223J Resistor(1/4W 3.3KΩ...
Page 158 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [11] Power supply PWB unit Fuse(10A/125V) [F1] 0KYK7138AS006 Fuse(4.0A/250V) [F2] 0KYK7101AR4R0 Wire(12.5mm) [F101] 0KYW0000AQ012 Fuse(4A/125V) [F102] 0KYK7130AA004 Fuse(4.0A/250V) [F103] 0KYK7101AR4R0 Heat sink [HS1] 0KY0MPS902200 Heat sink [HS2] 0KY0MPS902200 Heat sink [HS3] 0KY0MPS902100 Integrated circuit(TA76432AS) [IC201]...
Page 159 AM-900U PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [11] Power supply PWB unit Resistor(1/10W 180KΩ ) [R302] 0KYR3113VC184 Resistor(1/10W 3.9KΩ ) [R303] 0KYR3111VC392 Resistor(1/10W 4.7KΩ ) [R306] 0KYR3114VC472 Resistor(1/4W 4.7KΩ ) [R501] 0KYR3131AC472 Resistor(1/4W 4.7KΩ ) [R502] 0KYR3131AC472 Resistor(1/4W 4.7KΩ ) [R503] 0KYR3131AC472 Resistor(1/4W 4.7KΩ...
Page 160 AM-900U INDEX INDEX PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK LPLTP3349XHZZ 1-21 [ C ] CCNWN346CXH01 2-25 LPLTP3363XHZZ 3-12 LPLTP3376XHZZ 5-11 CROLR2528XH01 1-24 LSTPP2063XHZZ 3-26 [ D ] LX-BZ0956XHZ7 5-B1 DCEKC781UXHZZ LX-BZ2138XHZ7 5-B2 "...
Page 161 AM-900U PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK PGIDM2687XHZZ 1-50 [ N ] PGIDM2688XHZZ 1-51 NBLTK2067XHZZ NFANP2005XHZZ 6-12 PGIDM2689XHZZ 1-19 PGIDM2692XHSA 1-82 NGERH2278XHZZ PGIDM2694XHSA 1-52 NGERH2458XHZZ 6-13 PGIDM2695XHSA 1-53 NGERH2466XHZZ PGIDM2696XHZZ 4-10 NGERH2480XHZZ 6-14 NGERH2517XHZZ PGIDM2697XHZZ...
Page 162 AM-900U PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK QCNWN266CXHZZ 5-36 RMPTR4271ACZZ QCNWN267CXHZZ 1-84 " QCNWN278CXHZZ 1-56 " 9-10 QCNWN297CXHZZ 6-30 RMPTR4330ACZZ QCNWN315CXHZZ 1-57 " QCNWN316CXHZZ 1-28 " QCNWN317CXHZZ 6-31 " QCNWN390CXHZZ 1-109 " QFS-L0004QCZZ 9-272 "...
Page 163 AM-900U PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK VCCCCZ1EH330J 9-31 " 9-37 " 9-177 " 9-38 " 9-180 " 9-39 " 9-182 " 9-40 " 9-194 " 9-41 " 9-195 " 9-42 " 9-228 "...
Page 164 AM-900U PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK " 9-230 VRD-HT2EY910J 10-40 " 9-234 VRD-HT2HY223J 10-36 VCKYCZ1EB102K 9-79 VRS-CY1JB000J 9-140 " 9-104 " 9-141 " 9-107 " 9-374 " 9-109 " 9-380 " 9-112 "...
Page 165 AM-900U PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK " 9-658 " 9-456 " 9-676 " 9-459 " 9-677 " 9-461 " 9-682 " 9-482 VRS-CZ1JB100J 9-306 " 9-485 " 9-329 " 9-488 " 9-365 "...
Page 166 AM-900U PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK VRS-CZ1JB203J 9-449 " 9-432 " 9-466 " 9-445 " 9-471 " 9-458 " 9-576 " 9-462 " 9-669 " 9-463 " 9-670 " 9-464 VRS-CZ1JB221J 9-335 "...
Page 167 AM-900U PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK " 11-68 0KYR3111VC101 11-112 0KYC1095EQ104 11-32 0KYR3111VC102 11-138 0KYC10A9RQ221 11-11 " 11-141 0KYC10A9YQ102 11-22 0KYR3111VC103 11-131 0KYC10Q1EQ101 11-14 " 11-139 0KYC10Q2CQ473 11-28 " 11-140 0KYC10Q2EQ104 11-18 "...
Page 168 AM-900U © COPYRIGHT 2005 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

Sharp AM-900 Service Manual

Model

Chapter 1. General Description

Chapter 2. Adjustments

Chapter 3. Mechanical Description

CHAPTER 4. DIADRAMS 1] Block Diagram

Chapter 5. Circuit Description

Chapter 7. Operation Flowchart

CHAPTER 8. OTHER 1] Service Tools

Parts Guide

Quick Links

SERVICE MANUAL

Troubleshooting

Related Manuals for Sharp AM-900

Summary of Contents for Sharp AM-900

Table of Contents