Sharp AR-5012 Service Manual
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Sharp AR-5012 Service Manual

Sharp digital laser copier/ printer service manual
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[ 1 ] GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
[ 2 ] SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
[ 3 ] CONSUMABLE PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
[ 4 ] EXTERNAL VIEWS AND INTERNAL STRUCTURES . . . . . . . . . 4 - 1
[ 5 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
[ 6 ] COPY PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1
[ 7 ] OPERATIONAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 1
[ 8 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 8 - 1
[ 9 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
[10] SIMULATION, TROUBLE CODES . . . . . . . . . . . . . . . . . . . . . . . 10 - 1
[11] MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1
[12] USER PROGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1
[13] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 - 1
[14] CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 - 1
Parts marked with "
" are important for maintaining the safety of the machine. Be sure to replace these parts
with the replacement parts specified to maintain the safety and performance of the machine.
SERVICE MANUAL
DIGITAL LASER COPIER/
PRINTER
AR-5012
CONTENTS
SHARP CORPORATION
CODE : 00ZAR5012/A1E
AR-5012
MODEL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

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Summary of Contents for Sharp AR-5012

  • Page 1 SERVICE MANUAL CODE : 00ZAR5012/A1E DIGITAL LASER COPIER/ PRINTER AR-5012 AR-5012 MODEL CONTENTS [ 1 ] GENERAL ......... . . 1 - 1 [ 2 ] SPECIFICATIONS.
  • Page 2 CAUTION This product is a class 1 laser product that complies with 21CFR 1040 of the CDRH standard and IEC825. This means that this machine does not produce hazardous laser radiation. The use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
  • Page 3 At the production line, the output power Caution of the scanner unit is adjusted to 0.57 This product contains a low power laser MILLI-WATT PLUS 20 PCTS and is device. To ensure continued safety do not maintained constant by the operation of remove any cover or attempt to gain access the Automatic Power Control (APC).

  • Page 4: Table Of Contents

    CONTENTS GENERAL DISASSEMBLY AND ASSEMBLY 1. Major functions ....... . . 1-1 1.

  • Page 5: Major Functions

    Scan Once Print Many function (Many copies are made by one scan.) Duplex: Auto duplex copy function Memory: Standard page memory FAX: FAX function. Descriptions of table Standard provision No function or no option available Opt: Option ∗ AL-12PKM ∗ AR-PG2 AR-5012 AR-5012 GENERAL 1 - 1...

  • Page 6: Specifications

    1100Vrms (Min) Power consumption 9.6W (Max) Output data R, G, B 1 or 8 bits/pixel / A/D 16bit Writing Writing system Writing to OPC drum by the semiconductor laser section Laser unit Resolution 600 dpi AR-5012 SPECIFICATIONS 2 - 1...
  • Page 7 Less than 1000W Average AR-5012 300 Wh/H *1) (during copying) Average (stand-by) 80Wh/H *1) Pre-heat mode 18Wh/H *1) Auto power shut-off mode 4.5Wh/H *1) *1) May fluctuate due to environmental conditions and the input voltage. AR-5012 SPECIFICATIONS 2 - 2...

  • Page 8: Copy Performance

    Enlarge: 2mm or less (OC) / 3mm or less (SPF/R-SPF/Duplex) Reduction (50%): 6.0mm or less (OC) / 8mm or less (SPF/R-SPF/ Duplex) Warm-up time 0 sec. Power save mode reset time 0 sec. Paper jam recovery time 0 sec. AR-5012 SPECIFICATIONS 2 - 3...

  • Page 9: Consumable Parts

    (1 - 9 = Jan. - Sep. 0 = Oct. X = Nov. Y = Dec.) Serial number of month Fixed to 1. Pack division (See table below) End digit of year Version No. –5˚C 45˚C AR-5012 CONSUMABLE PARTS 3 - 1...

  • Page 10: Td Cartridge Replacement

    ∗1 The production control label is not attached to the cartridge of a China product. <Developer> Note: Never carry exposed Toner unit. Be sure to put it in the collection bag. Sub lot Production day Production month End digit of year Production place AR-5012 CONSUMABLE PARTS 3 - 2...

  • Page 11: External Views And Internal Structures

    Paper output tray Paper output tray extension Power switch Handle Power cord socket — — 2. Internal Fusing unit release lever Transfer charger Toner cartridge Charger cleaner Photoconductive drum — — AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 1...

  • Page 12: Operation Panel

    • Copying is possible when the indicator is on. copying. • Use to set a user program. • Press and hold down during standby to display the total number of • Press to start copying copies made to date. AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 2...

  • Page 13: Motors And Solenoids

    Drives the optical mirror base (scanner unit). Toner motor Supplies toner. Cooling fan motor Cools the optical section. Resist roller solenoid Resist roller rotation control solenoid Paper feed solenoid CPFS1 Cassette Paper feed solenoid 1 AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 3...

  • Page 14: Sensors And Switches

    PPD1 sensor PPD1 Transmission sensor Paper transport detection 1 "L" at paper pass Door switch Micro-switch Door open/close detection 1 or 0V of 24V at door open (safety switch for 24V) AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 4...

  • Page 15: Pwb Unit

    AC power input, DC voltage control, High voltage control CCD sensor PWB For image scanning LSU motor PWB For polygon motor drive TCS PWB For toner sensor control LSU PWB For laser control AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 5...

  • Page 16: Cross Sectional View

    Transport the paper from the manual paper feed port. 11 PS roller unit Takes synchronization between the lead edge and the rear edge of the paper. 12 Paper feed roller Picks up a sheet of paper from the cassette. AR-5012 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 6...

  • Page 17: Unpacking And Installation

    Also make certain the outlet is properly grounded. Be sure to allow the required space around the machine for servicing and proper ventilation. Drum cartridge 20cm (8") (installed in unit) 20cm ( 10cm 10cm (4") (4") AR-5012 UNPACKING AND INSTALLATION 5 - 1...

  • Page 18: Unpacking

    9) Shake the aluminum bag to stir developer 10) Supply developer from the aluminum bag to the top of the MX roller evenly. Note: Be careful not to splash developer outside Developer unit. AR-5012 UNPACKING AND INSTALLATION 5 - 2...

  • Page 19: Toner Cartridge Installation

    6) Pull out the shutter in the arrow direction. Note: Do not hold and carry the shutter. Otherwise the shutter may drop and Toner unit may drop. 7) Completion of Toner unit installation Close the front and side cabinets. AR-5012 UNPACKING AND INSTALLATION 5 - 3...

  • Page 20: Loading Copy Paper

    Note: After loading copy paper, to cancel the blinking "H" without restarting copying, press the clear ( ) key. The "P" in the display will go out and the ready ( ) indicator will light up. AR-5012 UNPACKING AND INSTALLATION 5 - 4...

  • Page 21: Copy Process

    Waste toner box To face Synchronization Paper release Fusing Transfer Manual feed Separation with drum down tray Heat roller Electrode Transfer charger Cassette paper feed Transfer high Heater lamp voltage unit Print process Paper transport route AR-5012 COPY PROCESS 6 - 1...

  • Page 22: Outline Of Print Process

    A uniform negative charge is applied over the OPC drum surface by Aluminum the main charging unit. Stable potential is maintained by means of the layer Scorotron charger. Non-image area Image area Positive charges are generated in the aluminum layer. About DC5.5KV ( 580V/ 390V) AR-5012 COPY PROCESS 6 - 2...
  • Page 23 Toner remaining on the drum is removed and collected by the cleaning blade. It is transported to the waste toner collecting section in the cleaning unit by the waste toner transport roller. Toner is attracted over the shadowed area because of the developing bias. AR-5012 COPY PROCESS 6 - 3...
  • Page 24 Voltage added to the screen grid can be selected, high and low. To make it easily understood, the figure below shows voltage transition at the developer unit. START STOP Print potential Toner attract Developing bias potential Drum potential High Time AR-5012 COPY PROCESS 6 - 4...

  • Page 25: Operational Descriptions

    5) The LSU emits laser beams according to the print data. (Electrical signals are converted into photo signals.) 6) The laser beams are radiated through the polygon mirror and various lenses to the OPC drum. AR-5012 OPERATIONAL DESCRIPTIONS 7 - 1...

  • Page 26: Scanner Section

    473 through the idle gear, the pulley gear, the belt 190, and the idle pulley to drive the optical unit. Scanner motor Pulley gear Idle pulley Belt 473 Belt 190 Optical unit Shaft Idle gear AR-5012 OPERATIONAL DESCRIPTIONS 7 - 2...

  • Page 27: Laser Unit

    ≠ b ≠ c d = e = f A. General description General block diagram (cross section) f θ LENS Thermal fuse Separator pawl PPD2 Thermistor Pressure roller Heat roller Paper guide AR-5012 OPERATIONAL DESCRIPTIONS 7 - 3...

  • Page 28: Paper Feed Section And Paper Transport Section

    AR-5012 OPERATIONAL DESCRIPTIONS 7 - 4...
  • Page 29 Thus the paper is transported by the resist roller. 7) After the resist roller starts rotating, the paper is passed through the pre-transfer guide to the transfer section. Images are AR-5012 OPERATIONAL DESCRIPTIONS 7 - 5...
  • Page 30 POD jam POD does not turn on within 2.9 sec after turning on the resist roller. POD does not turn off within 1.5 sec - 2.7 sec after turning off PPD2. MPFS AR-5012 OPERATIONAL DESCRIPTIONS 7 - 6...

  • Page 31: Disassembly And Assembly

    • If there is no damage, execute the procedure of item 12). Part name Ref. 4) Remove the main charger. Drum (Cleaning the screen grid and the sawteeth.) Transfer charger unit Charger wire B. Drum replacement 1) Remove the drum cover. (4 Lock Tabs) AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 1...
  • Page 32 Attach the drum from (b). (Prevention against the sub blade edge moquette to cover the sub blade. breakage) Example of NG Attach the drum so that its position with the sub blade is as shown. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 2...
  • Page 33 1) Press the side cover open/close button and open the side cover. Transfer charger Lock pawl front D. Assembly procedure For assembly, reverse the disassembly procedure. E. Charger wire cleaning 1) Remove the charger cleaner from the manual paper feed unit. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 3...

  • Page 34: Operation Panel Section

    • The rest of the charger wire must be within 1.5mm. Refer to Fig.1 • The spring hook section (charger wire winding section) must be in the range of the projection section. • Be careful not to twist the charger wire. Charger wire Protrusion 1.5mm Fig.1 AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 4...

  • Page 35: Optical Section

    For assembly, reverse the disassembly procedure 3. Optical section A. List Part name Ref. Copy lamp unit Copy lamp Lens unit B. Disassembly procedure 1) Remove four screws, and remove the rear cabinet and the rear cabinet cover. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 5...
  • Page 36 12) Lift the rear side of the carriage, remove the belt and the connec- tor, and remove the carriage. Note: Attach the FFC to fit with the marking line. Marking line AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 6...

  • Page 37: Fusing Section

    6) Remove the screw and remove the PPD2 sensor. 3) Cut the binding band, remove the screw, and remove the ther- mistor. PPD2 sensor Thermistor AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 7...
  • Page 38 8) Remove the spring and remove the separation pawls (3 pcs.). Heat roller disassembly (Continued from procedure (4).) 5) Remove screws, remove the fusing cover, and open the heat roller section. 9) Remove the E-ring and remove the reverse gate. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 8...

  • Page 39: Tray Paper Feed/Transport Section

    Note: Apply grease to the sections specified with *. 8) Remove two screws and remove the thermo unit. 4) Remove each connector and three screws, and remove the MCU PWB. C. Assembly procedure For assembly, reverse the disassembly procedure. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 9...
  • Page 40 7) Remove two springs and open the intermediate frame unit. detection sensor (PPD2). 6) Remove two screws and remove the toner motor. 8) Remove the pulleys on the both sides and remove the paper exit roller. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 10...
  • Page 41 9) Pull out the paper exit roller knob and remove the belt. 11) Remove the paper exit roller. 12) Remove the harness guide. 10) Release the belt pulley (a) lock and remove the belt pulley bearing. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 11...
  • Page 42 Observe the following sequence of fixing screws. CAUTION:Attach the gears securely 14) Remove the parts as shown below, and remove the pressure release solenoid and the paper feed solenoid. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 12...
  • Page 43 17) Remove two screws and remove the fusing connector. unit. 18) Remove five screws and the connector, and lift the intermediate frame unit to remove. PS roller unit PS roller unit PS semi-circuler PS semi-circular earth plate earth plate AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 13...

  • Page 44: Manual Paper Feed Section

    24) Remove three E-rings and remove the clutch unit. Back Clutch unit Paper feed roller Front 2) Remove the screw and remove the side door detection unit. C. Assembly procedure Back Wire treatment For assembly, reverse the disassembly procedure. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 14...
  • Page 45 3) Remove three screws and remove the single manual feed upper 5) Remove the E-ring and remove the manual paper feed transport frame. roller. 6) Remove the cassette detection switch. 4) Remove the PPD1 sensor PWB. Wire treatment Wire treatment AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 15...

  • Page 46: Rear Frame Section

    1) Remove four screws, and remove the rear cabinet and the rear cabinet cover. 5) Remove two screws and one connector, and remove the exhaust fan motor. C. Assembly procedure For assembly, reverse the disassembly procedure. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 16...

  • Page 47: Power Section

    Power PWB 1) Disconnect each connector. 2) Remove the screw, and remove the earth line. 3) Remove two screws, and remove the power PWB unit. C. Assembly procedure For assembly, reverse the disassembly procedure. AR-5012 DISASSEMBLY AND ASSEMBLY 8 - 17...

  • Page 48: Adjustments

    2) When the main PWB is replaced. magnification ratio adjustment 3) When the EEPROM in the main PWB is replaced. SPF mode scanning direction Auto, Manual, Photo lamp 4) When "U2" trouble occurs. magnification ratio adjustment AR-5012 ADJUSTMENTS 9 - 1...
  • Page 49 Paper rear edge void quantity TEXT lamp When the set value is changed by 1, the magnification ration is Print start position (Duplex back) PHOTO lamp changed by 0.1%. RSPF (Back) original center offset AE, TEXT, PHOTO lamps AR-5012 ADJUSTMENTS 9 - 2...
  • Page 50 Copy paper (A4 or 8 1/2″ × 11″) 2) Execute SIM 50 - 10 to select the print center offset (cassette paper feed) adjustment mode. The set adjustment value is displayed on the copy quantity display. AR-5012 ADJUSTMENTS 9 - 3...

  • Page 51: Copy Density Adjustment

    C. Necessary tool for copy density adjustment • One of the following test charts: UKOG-0162FCZZ, UKOG-0089CSZZ, KODAK GRAY SCALE • B4 (14" x 8 1/2") white paper • The user program AE setting should be "3." AR-5012 ADJUSTMENTS 9 - 4...

  • Page 52: High Voltage Adjustment

    Auto T/S mode Auto lamp/Photo lamp ON "3" is slightly copied. 3) Make a copy. Check the adjustment level (shown in the above table) of the exposure test chart (Sharp Gray Scale). Sharp Gray Scale adjustment level Non toner save mode...

  • Page 53: Simulation, Trouble Codes

    Press the clear key. and the machine enters Press the COPY COPY QUANTITY the ready state for key. display. entering the main code. The entered value Press the clear key. is registered. AR-5012 SIMULATION, TROUBLE CODES 10 - 1...

  • Page 54: List Of Simulations

    Flash ROM program writing mode Lead edge Lead edge image position adjustment Center offset adjustment Timing Resist quantity adjustment adjustment Laser system Polygon motor check operation (HSYNC output check) Shading Shading check Self print Self print AR-5012 SIMULATION, TROUBLE CODES 10 - 2...

  • Page 55: Contents Of Simulations

    4. After 3 sec of the interval time from completion of copying the set quantity, the machine will resume copying. 5. The above operation 4 is repeated. This simulation is canceled by turning off the power or executing any simulation which performs hardware reset. AR-5012 SIMULATION, TROUBLE CODES 10 - 3...
  • Page 56 The main code and the sub code of the P-ROM version is displayed on the value display section in 2 digits alternately. The display method is the same as the total count value display. Copy counter display The display method is the same as the total count value display. AR-5012 SIMULATION, TROUBLE CODES 10 - 4...
  • Page 57 1. When this simulation is executed, the currently set duplex code number is displayed. 2. Enter the code number corresponding to the duplex and press the ENTER key, and the setup will be changed. Code number Duplex Without Duplex With Duplex AR-5012 SIMULATION, TROUBLE CODES 10 - 5...
  • Page 58 When this simulation is executed, the current setup of the code number is displayed. Enter the code number and press the PRINT switch to enable the setup. Code number Setup 0 sec 30 sec * Default 60 sec 90 sec AR-5012 SIMULATION, TROUBLE CODES 10 - 6...
  • Page 59 When this simulation is executed, the current setup of the code number is displayed. Enter the code number and press the PRINT switch to enable the setup. Code number Setup 1-speed fan control 2-speed fan control * Default when starting mass production AR-5012 SIMULATION, TROUBLE CODES 10 - 7...
  • Page 60 – 2° C ±0° C +2° C +4° C +6° C +8° C Setup of fusing control of postcard size paper Code number Setup Cancel * Default Setup The default for Japan model is “1.” AR-5012 SIMULATION, TROUBLE CODES 10 - 8...
  • Page 61 TEXT mode (300dpi) TEXT mode lamp PHOTO mode PHOTO mode lamp TS mode (TEXT) (300dpi) TEXT mode lamp & PHOTO mode lamp TS mode (AE) (300dpi) AE mode lamp & PHOTO mode lamp AR-5012 SIMULATION, TROUBLE CODES 10 - 9...
  • Page 62 AE mode lamp TEXT mode TEXT mode lamp PHOTO mode PHOTO mode lamp TS mode (TEXT) TEXT mode lamp & PHOTO mode lamp TS mode (AE) AE mode lamp & PHOTO mode lamp AR-5012 SIMULATION, TROUBLE CODES 10 - 10...
  • Page 63 To perform the automatic adjustment, place the gray gradation chart (UKOG-0162FCZZ) face down so as to fit with the left center of the platen with the darker side (Density 10) on the left of OC. Back of the chart AR-5012 SIMULATION, TROUBLE CODES 10 - 11...
  • Page 64 ∗ “*” in an error display indicates the error position. Data reception error Loader function transfer FLASH ROM delete FLASH ROM writing (Boot section) FLASH ROM writing (Program section) Sum check (Loader section) Sum check (Boot section) Sum check (Program section) AR-5012 SIMULATION, TROUBLE CODES 10 - 12...
  • Page 65 ∗ When the setup value is too great, outside of the shading area may be read, and black streaks may be produced on the edges. When the adjustment value is increased, the image is shifted to the left. When the adjustment value is decreased, the image is shifted to the right. AR-5012 SIMULATION, TROUBLE CODES 10 - 13...
  • Page 66 PRINT switch, and paper feed operation will be made from the selected cassette and printing of the selected pattern will be made. Printing is in 1by2 mode, or grid pattern. Code number Pattern 1by2 Grid pattern ∗ 2 – 99: print in 1by2. AR-5012 SIMULATION, TROUBLE CODES 10 - 14...

  • Page 67: Trouble Codes

    Counter sum check error When the counter check sum value stored in the EEPROM is abnormal. EEPROM serial When a communication trouble occurs with the EEPROM. communication error Main IC chip read error AR-5012 SIMULATION, TROUBLE CODES 10 - 15...

  • Page 68: Maintenance

    • The toner END indication appears when the END is detected by the toner sensor, or when the number of revolutions of the toner motor reaches a given number (equivalent to 8K), whichever comes first. AR-5012 MAINTENANCE 11 - 1...

  • Page 69: User Programs

    • For setting, refer to the following set codes. 6) Press either one of the exposure adjustment keys ( ) to complete the setting. • Display lamps ( ) go off and the copy quantity dis- play returns to the normal state. AR-5012 USER PROGRAMS 12 - 1...

  • Page 70: Density Level Adjustment

    • The toner save mode is applied in the auto mode and the manual • When the machine enters the exposure adjustment mode of OC mode. once, the adjustment mode is not changed though a document is set on the SPF until the setup is completed. AR-5012 USER PROGRAMS 12 - 2...

  • Page 71: Electrical Section

    [13] ELECTRICAL SECTION 1. Block diagram A. Overall block diagram AR-5012 ELECTRICAL SECTION 13 - 1...
  • Page 72 B. MCU PWB unit AR-5012 ELECTRICAL SECTION 13 - 2...

  • Page 73: Circuit Descriptions

    Data bus Analog NC Pull-Up Data I/O Data bus input Data I/O Data bus SIN1 Input HC151 select detection Data I/O Data bus SIN2 Input HC151 select detection DGND SIN3 Input HC151 select detection AR-5012 ELECTRICAL SECTION 13 - 3...
  • Page 74 Tr array IC SPF/RSPF motor GND(CORE/DC) Power current control signal cpu_ad1 CPU address bus 15 mrps2 Tr array IC SPF/RSPF motor 10 sgs Tr array IC SPF/RSPF gate current control signal solenoid control signal "H":ON AR-5012 ELECTRICAL SECTION 13 - 4...
  • Page 75 46 miron Buffer IC SPF scanner select connector communication port) signal 84 ie1284_parad1 IN/OUT I/F board DATA bus (IEEE1284 47 GND(AC) Power connector communication port) 48 spfon Buffer IC SPF ON signal 85 GND(AC) Power AR-5012 ELECTRICAL SECTION 13 - 5...
  • Page 76 116 ram_data13 IN/OUT SDRAM SDRAM (Image 143 GND(AC) process page 144 ram_mad8 SDRAM SDRAM (Image memory) data bus process page 117 ram_data12 IN/OUT SDRAM SDRAM (Image memory) address bus process page memory) data bus AR-5012 ELECTRICAL SECTION 13 - 6...
  • Page 77 CCD PWB Image scan data 232 cpudata13 IN/OUT CPU CPU data bus 187 afp_data1 CCD PWB Image scan data 233 cpudata12 IN/OUT CPU CPU data bus 188 GND(AC) Power 234 cpudata11 IN/OUT CPU CPU data bus AR-5012 ELECTRICAL SECTION 13 - 7...
  • Page 78 The CPU controls ON/OFF of the heater lamp by this input voltage becomes HIGH, and the HL signal is lowered to the GND potential level. through IC124, stopping generation of the heater lamp ON signal. (IC120 1pin is normal LOW.) AR-5012 ELECTRICAL SECTION 13 - 8...
  • Page 79 IC125 to the control circuit in the main motor to rotate the main Circuit motor. When the main motor speed reaches the specified rpm, the ( Main Motor) MMLD signal is turned LOW and passed through IC115 to the CPU. TD62503F ASIC MMLD AR-5012 ELECTRICAL SECTION 13 - 9...
  • Page 80 PGND 510J 0.1u PGND PGND (5-C1) MMref0 (5-C1) MMref1 (5-C1) MMref2 PGND C207 C206 CP201 CP202 1u/16V 0.1u 0603FA1.5A 0603FA1.5A CP101 CP102 ICP-N38 ICP-N38 PGND 24VM 24Vdup C209 C210 C208 47u/35V 0.1u/50V 0.1u/50V PGND AR-5012 ELECTRICAL SECTION 13 - 10...
  • Page 81 (Semiconductor switch) smoothing circuit Rectifying/ +12V regulator IC smoothing circuit (with ON/OFF function) Rectifying/ smoothing circuit (Semiconductor switch) +3.3V Overcurrent Control Constant-voltage regulator IC protection circuit circuit detection circuit fig (1) Block diagram AR-5012 ELECTRICAL SECTION 13 - 11...
  • Page 82 C010, suppressing a rush current. The rectifying/smoothing circuit rectifies a 50/60Hz AC voltage with the rectifying circuit, and smoothes it with the smoothing capacitor C010. secondary winding voltage fig (5) Operation waveform of the flyback converter AR-5012 ELECTRICAL SECTION 13 - 12...
  • Page 83 The high frequency pulse generated by the inverter circuit is decreased by the converter transformer, rectified by the high frequency diode D103, and smoothed by C103 and C104. Voltage waveform Voltage waveform fig (7) +5V rectifying/smoothing circuit voltage waveform AR-5012 ELECTRICAL SECTION 13 - 13...

  • Page 84: Circuit Diagram

    [14] CIRCUIT DIAGRAM AR-5012 CIRCUIT DIAGRAM 14 - 1...
  • Page 85 AR-5012 CIRCUIT DIAGRAM 14 - 2...
  • Page 86 AR-5012 CIRCUIT DIAGRAM 14 - 3...
  • Page 87 AR-5012 CIRCUIT DIAGRAM 14 - 4...
  • Page 88 AR-5012 CIRCUIT DIAGRAM 14 - 5...
  • Page 89 AR-5012 CIRCUIT DIAGRAM 14 - 6...
  • Page 90 AR-5012 CIRCUIT DIAGRAM 14 - 7...
  • Page 91 AR-5012 CIRCUIT DIAGRAM 14 - 8...
  • Page 92 AR-5012 CIRCUIT DIAGRAM 14 - 9...
  • Page 93 AR-5012 CIRCUIT DIAGRAM 14 - 10...

  • Page 94: Power Supply

    3. POWER SUPPLY POWER SUPPLY (120V/127V) AR-5012 CIRCUIT DIAGRAM 14 - 11...
  • Page 95 AR-5012 CIRCUIT DIAGRAM 14 - 12...

  • Page 96: Noise Filter Circuit

    POWER SUPPLY (220V/240V) 4. NOISE FILTER CIRCUIT AR-5012 CIRCUIT DIAGRAM 14 - 13...
  • Page 97 AR-5012 CIRCUIT DIAGRAM 14 - 14...

  • Page 98: Actual Wiring Diagram

    PPD2 sensorPWB PULUP5V PPD2 CN120 D-GND PULUP5V PPD2 D-GND RTH_IN RTH_IN D-GND Thermisto D-GND B5B-PH-K-S Fuser unit CN123 Manual Paper /MPFS PULUP5V Feeding unit D-GND B5B-PH-K-R DUPLEX MAIN TONER For DSPF Model Only For S AR-5012 CIRCUIT DIAGRAM 14 - 15...
  • Page 99 24VIN 24VIN HLOUT PGND PGND B24B-PHDSS-B DUPLEX INTERLOCK SW Cover open (SIDE DOOR SW) detecter UNIT *A – E have detail view For DSPF Model Only For SPF/DSPF Model Only For DSPF Model Only AR-5012 CIRCUIT DIAGRAM 14 - 16...
  • Page 100 5VEN PGND 3.3VIN D-GND Lamp 5VIN 3.3VIN /POFF 5VEN 12VIN 3.3VIN LOW VOLTAGE 24VIN 5VIN POWER SUPPLY UNIT /POFF 24VIN 12VIN 24VIN HLOUT PGND 24VIN CN001 PGND AC-ORD B24B-PHDSS HLOUT PGND PGND POWER UNIT AR-5012 CIRCUIT DIAGRAM 14 - 17...
  • Page 101 DRM RESET SW (PSL) (PSL) D-GND 5VEN 5VEN D-GND D-GND SELIN3 SELIN3 SELIN2 SELIN2 SELIN1 SELIN1 OPERATION OP-DATA OP-DATA OP-LATCH OP-LATCH PANEL PWB OP-CLK OP-CLK (BEO) (BEO) (KIN1) (KIN1) (KIN2) (KIN2) DRST DRST D-GND D-GND 18FE-BT-VK-N AR-5012 CIRCUIT DIAGRAM 14 - 18...
  • Page 102 /ACK /ACK D-GND BUSY BUSY D-GND D-GND SLCT SLCT D-GND /INT /INT D-GND /SLCTIN /SLCTIN D-GND /AUTOFD /AUTOFD /INT /STB /STB /FAULT GDIIN GDIIN D-GND D-GND D-GND D-GND D-GND HLHIN 35FE-BT-VK-N 35FE-BT-VK-N /SLCTIN IEEE1284_CN AR-5012 CIRCUIT DIAGRAM 14 - 19...
  • Page 103 D-GND SPF SENSOR SDSW SPPD SB4D CN101 D-GND D-GND /SPUS SDSW SDSW SPID SPID SENSOR PWB /SPFS /SRRC /SGS SPMT-1 SPMT-0 SPMT-3 24VM SPMT-2 SPMT-2 MOTOR SPMT-0 SPMT-3 24VM 24VM 24VM SPMT-1 R-SPF UNIT AR-5012 CIRCUIT DIAGRAM 14 - 20...
  • Page 104 2nd Paper feeding unit CN115 /CPFS2 /CPFS2 /CPFS2 PF SOLENOID OED2 TRAY DETECT PPD3 PPD3 D-GND SWITCH D-GND D-GND D-GND D-GND D-GND PPD3 PHOTO SENSOR D-GND D-GND OED2 OED2 D-GND D-GND 2nd Paper feeding unit (OPTION) AR-5012 CIRCUIT DIAGRAM 14 - 21...
  • Page 105 ACTUAL WIRING DIAGRAM 7/7 (MANUAL PAPER FEEDING UNIT) CN123 /MPFS Multi feeding solenoid B5B-PH-K-R Multi Manual Paper Feeding unit CN123 MFD sensor PWB PULUP5V D-GND B5B-PH-K-R Single Manual Paper Feeding unit Manual Paper Feeding unit AR-5012 CIRCUIT DIAGRAM 14 - 22...
  • Page 107 CAUTION FOR BATTERY DISPOSAL (For USA,CANADA) Contains lithium-ion battery. Must be disposed of properly. Remove the battery from the product and contact federal or state environmental agencies for information on recycling and disposal options.
  • Page 108 COPYRIGHT 2002 BY SHARP CORPORATION All rights reserved. Printed in Japan. 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.

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