Sharp FO IS125N - B/W Laser - All-in-One Service Manual
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Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 7 – 2 [2] Power on sequence CPU initialized D-RAM initialized Gate array initialized PC I/F initialized START When option board is connected. “MEMORY CLEAR” “EXECUTE ?” display YES YES YES STAND-BY NO COPY key ? START+STOP key ? 1key? Other key ? NO Memory clear System initialized “PLEASE WAIT A MOMENT” display Memory clear System initialized PROCESS CHECK MODE NO YES NO “PLEASE WAIT A MOMENT” display
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 2 – 3 3.2. MC Voltage Check Point 1) MC Voltage CAUTION - HIGH VOLTAGE The unit's back cover should never be opened by anyone other than a qualified serviceperson. There are many high voltage parts inside the unit, and touching them is dangerous. GND (-) (J3 or Chassis Frame) MC Voltage Check Point (-) (There is danger of an electric shock!) Use Measuring instrument: Input Resistance : more than 100 MΩ Maximum Voltage : more than 2 kV VOLTAGE MC:-950V±20V(PRINTING) MC:-850V±20V
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 8 [4] Paper happer unit NO. PARTS CODE PRICE RANK NEW MARK PART RANK DESCRIPTION [4] Paper happer unit 1 LPLTG3476XHZZ AQ N C Separate pad 2 LPLTM2924XHFW AQ C Rotation plate 3 LPLTP3475XHZZ AE N C Separate plate 4 LPLTP3483XHZZ AP N C Release plate 5 MSPRC3702XHZZ AC N C Separate spring 6 MSPRC3703XHZZ AD N C Coil spring 7 MSPRT3718XHZZ AD N C RP release spring 8 NGERH2365AXZZ AD C RP release gear,left 9 NGERH2754XHZZ AE N C RP release gear, right 10 PGIDM2746XHZZ AV N C Paper hopper 11 PGIDM2747XHZZ AF N C A4 pap
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 2 – 55 SW152 No. 4 Authorized transmission Used to enable the authorized transmission function. SW152 No. 5, No. 6 To be authenticated Used to select the communication mode using the authorized trans- mission function. SW152 No. 7, No. 8 Notice to the sender Used to select the result notification method to the sender using the authorized transmission function. SW153 No. 1, No. 2 Automatic elimination Used to set the elimination time of the communication data using the authorized transmission function. SW153 No. 3 Search method by right and left key Used to set the display items when displaying the other party using the right and left keys. SW153 No. 4 Warning
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 1 – 6 [4] Transmittable documents 1. Document Sizes Use document carrier sheet for smaller documents. • With special sizes, only one sheet can be fed into the machine at a time. Insert next page into feeder as current page is being scanned. 2. Paper Thickness & Weight 3. Document Types • Normal paper Documents handwritten in pencil (No. 2 lead or softer), fountain pen, ball-point pen, or felt-tipped pen can be transmitted. Documents of normal contrast duplicated by a copying machine can also be transmitted. • Diazo copy (blue print) • Diazo copy documents of a normal contrast may be transmitt
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 3 – 16 4. Paper hopper Fig.4 6 5,4 10 11 7 5 2 8 6 4 2 3 1 Paper hopper unit 9 No. Part name Qty 7 Rotation plate 1 8 Paper pad 3 A4 paper guide 1 1 11 Paper hopper 1 Parts list (Fig. 4) No. Part name Qty 1 Paper hopper unit 1 2 Screw with washer (3x10) RP release spring 1 4 3 RP release gear, right 1 2 5 RP release gear, left 1 6 RP release plate 1 Coil spring 9 10
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 2 – 20 SW NO. DATA NO. ITEM Switch setting and function Initial setting Remarks 10 SW 48 1 Reserved 0 2 Reserved 0 3 Reserved 1 4 Reserved 0 5 Reserved 0 6 Reserved 1 7 Reserved 0 8 Reserved 0 SW 49 1 Reserved 0 2 Reserved 0 3 Reserved 0 4 Reserved 0 5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 SW 50 1 Reserved 0 2 Reserved 0 3 Reserved 1 4 Reserved 1 5 Reserved 0 6 Reserved 1 7 Reserved 1 8 Reserved 0 SW 51 1 Reserved 0 2 Reserved 0 3 Reserved 1 4 Reserved 1 5 Reserved 0 6 Reserved 1 7 Reserved 1 8 Reserved 0 SW 52 1 Reserved 1 2 Reserved 1 3 Reserved 0 4 Reserved 0 5 Reserved 1 6 Reserved 0 7 Reserved 0 8 Reserved 0 SW 53 1 Reserved 1 2 Reser
FO-IS125N 6 – 21 [4] Operation Panel/Hook Switch PWB circuit 1. Operation Panel/Hook Switch PWB circuit (1/2) A A B B C C D D E E F F G G H H 6 6 5 5 4 4 3 3 2 2 1 1 DG DG +3.3V +3.3V ADG +3.3V +3.3V ADG ADG KEN0 KEN1 KEN2 /SEN4 /SEN3 /SEN2 /SEN1 /SEN0 ORGSNS FRSNS /SEN5 /SEN6 nRHS TELIN TELOUT nRHS KEN3 TELIN TELOUT DECODER SCAN TO HOLDER SPEAKER SECURE Shift Start
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 2 – 38 SW NO. DATA NO. ITEM Switch setting and function Initial setting Remarks 10 SW 166 1 Reserved 1 2 Reserved 0 3 Reserved 0 4 Reserved 0 5 Reserved 1 6 Reserved 0 7 Reserved 0 8 Reserved 0 SW 167 1 Reserved 0 2 Reserved 1 3 Reserved 0 4 Reserved 1 5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 SW 168 1 Reserved 0 2 Reserved 0 3 Reserved 0 4 Reserved 0 5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 SW 169 1 Reserved 0 2 Reserved 0 3 Reserved 0 4 Reserved 0 5 Reserved 0 6 Reserved 0 7 Reserved 0 8 Reserved 0 SW 170 1 Reserved 0 2 Reserved
FO-IS125N 6 – 10 10. Power Supply Block (9/12) (4-4I) A A B B C C D D E E F F G G H H I I 6 6 5 5 4 4 3 3 2 2 1 1 DG +3.3V MG DG DG VBAT +3.3V +24VH +24V V4D +3.3V DG V4D FG2DG FG3DGMG MG MG nZC HLON VBT VBT DG DG +3.3V DG <Side A> <Side A> <Side B> <Side A> <Side B> <Side A> TP905 TP909 TP907 + BAT900 CR2032 (Vertical) TP902 R900 10K TP906 C903 10
FO-IS125N 22 INDEX PARTS CODE No. PRICE RANK NEW MARK PART RANK [ C ] CCASP2204XH01 2-901 BS N E CCNWN346CXH01 1-14 AP C CFRM-2265XH04 6-901 BV N E CFRM-2285XH01 3-1 AZ N E CFRM-2286XH01 5-901 BM N E CROLP2499XH01 3-9 AM C CROLR2566XH01 1-3 AP N C CROLR2567XH01 1-48 AP N C [ D ] DCEKC582XXH01 1-2 CA N E " 8-901 CA N E DCEKP418DXH01 2-31 BA N E " 11-901 BA N E DCE
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 2 – 5 3.4. SV/DV Voltage Check Point and SV (-) Voltage Adjustment Volume CAUTION - HIGH VOLTAGE The unit's back cover should never be opened by anyone other than a qualified serviceperson. There are many high voltage parts inside the unit, and touching them is dangerous. DV Voltage Check Point (+) VOLTAGE DV(+):+300V±5V(CLEANING) DV(-):-200V±5V(PRINTING) SV Voltage Check Point (+) VOLTAGE SV(+):+300V±15V(CLEANING) SV(-):-400V±15V(PRINTING) GND (-) (J3 or Chassis Frame)
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 5 – 23 3.1.3 Laser scanning unit This unit controls the laser beam power and laser beam scanning. The control is performed with the signals inputted outputted to or from the CPU and Logic circuit. 1) Signal functions 2) Laser beam power control The laser beam power is controlled in the laser scanning unit. This circuit functions to keep the laser beam output power at a con- stant level. The laser beam output is monitored with photo diode for monitor. When the laser beam output rises above the specified value, the impedance of photo diode is decreased to decrease the monitor input voltage of the laser diode control IC. Then the laser diode drive voltage is de
FO-IS125N 5 – 27 [4] Circuit description of CIS unit 1. CIS Cis is an image sensor which puts the original paper in close contact with the full-size sensor for scanning, being a monochromatic type with the pixel number of 1,728 dots and the main scanning density of 8 dots/mm. It is composed of sensor, rod lens, LED light source, light-conductive plate, control circuit
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 5 – 21 CX20548 (IC1100, IC1200) Terminal description Pin Name Pin No. Pin I/O I/O Type Signal Description System Interface Signals PWR 15 PWR PWR Unregulated Power Output. Unregulated power output from the internal rectifier, connect to AGND_LSD through C870. VC 3 REF REF Output Middle Reference Voltage. Connect to AGND_LSD through C844, which must be placed close to pin 3. Use a short path and a wide trace to AGND_LSD pin. AVDD 2 PWR PWR Analog Power Output. Provides external connection point for decoupling. (AVDD is routed internally to LSD analog circuits.). Connect
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 2 – 27 SW NO. DATA NO. ITEM Switch setting and function Initial setting Remarks 10 SW 97 1 Reserved 0 2 Reserved 1 3 Reserved 1 4 Reserved 0 5 Reserved 1 6 Reserved 1 7 Reserved 0 8 Reserved 0 SW 98 1 Reserved 0 2 Reserved 1 3 Reserved 0 4 Reserved 0 5 Reserved 1 6 Reserved 0 7 Reserved 0 8 Reserved 0 SW 99 1 Reserved 0 2 Reserved 1 3 Reserved 0 4 Reserved 1 5 Reserved 0 6 Reserved 0 7 Reserved 1 8 Reserved 0 SW 100 1 Reserved 0 2 Reserved 1 3 Reserved 1 4 Reserved 0 5 Reserved 0 6 Reserved 1 7 Reserved 0 8 Reserved 0 SW 101 1 Reserved 0 2 Reserved 1 3 Reserved 1 4 Reserved 0 5 Reserved 1 6 Reserved 0 7 Reserved 0 8 Reserved 0 SW 102 1 Reserved 0 2 Reserved 0 3 Re
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 5 – 13 2.2.3 Hardware controlled protection function A fuse is installed in the following power supply lines: Optical unit (LSU) laser, Main motor, Pickup motor Device Protective action Circuit description Purpose Status to be activated Heater lamp (fusing device) 1 The heater lamp is forcibly turned off when the temperature of the fusing device (thermistor value) exceeds the upper limit. The circuit forcibly turns off (resets) the control signal of the heater lamp when the thermistor va
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 3 – 17 5. Front cover unit/PU guide upper unit/PWB plate/Optical unit/Fusing unit/Drive unit Fig.5 15 14 Drive unit 13 12 12 11 11 Fusing unit 10 2 Optical unit 8 PWB plate 9 9 6 6 4 4 7 5 PU guide upper unit 3 Front cover unit 1 Mechanism unit 6 No. Part name Qty 9 Screw (3x10) 4 10 Optical unit 2 11 Special screw (3x12) 2 1 13 Fusing unit 1 15 Drive unit 1 Parts list (Fig. 5) No. Part name Qty 1 Mechanism unit 1 2 Hook Front cover unit 1 4 3 Screw (3x10) 2 1 5 PU guide upper unit 1 7 Screw (3x6) 1 14 Screw (3x10) 46 Screw (3x10) 4 Hook 12 NOTE: For disassembly of the inside of the unit, refer to the exploded view in the parts
Sharp FO IS125N - B/W Laser - All-in-One, FO-IS125N 2 – 1 FO-IS125N Service Manual CHAPTER 2. ADJUSTMENTS [1] Adjustments 1. General description 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. Set the recording paper and document. 3. When the document is loaded, power is supplied to the output lines. Confirm that outputs are within the limits below. 2.1. Output voltage settings CNLAN CNSP CNTEL CNLNJ CNSL CNPW CNPN CNTNR CNPOUT CNPIN CNCIS CNRTH CNHV CNLSR CNPM C
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