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(6) Heater lamp control circuit

1

General

The heater lamp control circuit detects the heat roller surface temper-
ature with the thermistor, converts it into a voltage, and outputs it to
the CPu analog input pin.
The CPU converts analog signals into digital signals, compares them
with the value set by test commands to turn on/off the heater lamp,
maintaining the heat roller surface temperature at a constant level.
The higher the heat roller surface temperature is, the greater the
thermistor resistance is, and vice versa.
Therefore, the lower the heat roller surface temperature is, the higher
the thermistor pin voltage is. The thermistor pin voltage is inputted to
the analog port of CPU, which controls ON/OFF of the heater lamp
according to the input voltage level.

[High temperature protect circuit when the CPU is hung up (out
of control)]

1) The IC20 8 pin voltage (reference voltage) is divided by R91 and

R93. The thermistor pin voltage is inputted to the IC20 9 pin.
When the voltage at 9 pin becomes lower than the voltage at 8 pin
(the heat roller surface temperature about 240V), the IC20 14 pin
is driven to LOW, pulling down the PR signal to the GND level,
turning off the AC power of the heater lamp.

2) Since the OP-latch signal is fixed to HIGH or LOW, the collector of

Q7 is open. The voltage at IC20 10 pin is higher than the voltage
at IC20 11 pin (reference voltage), and IC20 13 pin is driven to
LOW.
With the above operations, IC9 13 pin is opened to turn off Q5,
turning off the power relay. As a result, the AC power of the heater
and the copy lamp is turned off.

*

The double protection with 1) and 2) is provided.

16
15
14
13
12
11
10

9

1
2
3
4
5
6
7
8

O1
O2
O3
O4
O5
O6
O7
SK

I1
I2
I3
I4
I5
I6
I7

G

14

8

9

D6

D7

IC20C

NJM2901

R91
8.2KJ

R87
1MJ

R89
4.7KF

D3 8

MA700

R9 2
47KF

C55

22000PF

R93

680J

13

11

10

IC20D

NJM2901

R67
1KJ

R6 8
5.6KJ

C7

0.22µ F

R7 5

75J

R84
10KJ

R7 1
47KJ

R54

5.6KJ

R5 3

47KJ

+24V

Q 5

2SA573

GATE

T1

T2

AC PWB

PR

GND

AC PWB

PR

L2

N1

R35

270J

1/4W

10K

2.2K

Q3

DTA123Y5

+5V2

PR

HL

R32

2.7KJ

CPU

AN1

ML

ML

200V AREA

MLSW

MLSW

ML : 1KW

IC9

ULN2004

PR

8 ~ 20

D16

DSM101

D41

Q 7
2SC945

C6

0.22µ F

R80

24KJ

OP-LATCH
CPU 17PIN

+5V1

Vref

AC

Heat roller

12 – 12

MC-Service

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Summary of Contents for SF-2220

Page 1: ...l described only the changed items from the base model For the items common with the SF 2020 2120 refer to the Service Manual of the SF 2020 2120 The SF 2220 2320 circuit diagrams are same as those of the SF 2020 2120 Therefore please refer to the SF2020 2120 circuit diagrams CONTENTS SHARP CORPORATION This document has been published to be used for after sales service only The contents are subjec...

Page 2: ...e LBSHL0323FCZZ are required Paper size detection Available Black The paper size of each tray is set with the user program Refer to the paper size setting mode Original cover Standard provision Option SF CV13 Maintenance parts life Unit 50K Unit 60K 2 System configuration options 10 bin sorter SF S17N Automatic document feeder SF A18 Two step paper feed unit SF CM15 Tray reserve SF UB15 One step p...

Page 3: ...nit second step 6 4 sec Option paper feed unit 2nd step 6 8 sec 5 Jam recovery time 8 sec Conditions After leaving the door open for 60 sec the standard conditions 6 Multi copy Max 99 sheets 7 Original SF 2220 SF 2320 Max original size A3 Reference original size Left side Center Original sensing YES Japan only Sensing size A3 B5R 8 Copy magnification ratio Fixed magnification 200 141 122 115 100 8...

Page 4: ...on Fusing system Heat roller system Upper heat roller surface temperature 190 degrees C Heater lamp Halogen lamp 1000W 1 6 ADU section Paper kind Normal paper 56g m2 80g m2 Capacity 50 sheets Paper size B4 A4 B5 Copy void width Lead edge 3mm or less Rear edge 3mm or less 3 Supply parts Europe U K Name Content Life Product name 1 Photoconductor kit Photoconductor drum x 1 Cleaner blade x 1 Drum sep...

Page 5: ...nit 7 Manual feed original guide 8 Manual feed tray Option SF MF15 9 Operation panel F Front cover G Power switch H Paper tray SF 2220 Duplex tray SF 2320 I Paper tray J Developing unit grip K Developing unit strap L Toner hopper M Developing unit lock lever N Release lever O Fusing unit P Drum 1 2 3 4 5 13 11 10 9 5 8 7 6 15 14 16 17 18 20 19 12 Upper unit Lower unit 3 1 ...

Page 6: ...copy key Display lamp 2 Density selection key Display lamp 3 Paper jam lamp 4 Paper supply lamp 5 Tray position Paper jam position lamp 6 Magnification ration lamp 7 Maintenance lamp 8 Copy quantity display 9 Mini maintenance lamp F Toner supply lamp G 10 key pad H Pre heat lamp I Department count end key J All clear key K Clip tray L Sorter key Display lamp M Binding margin key display lamp N Edg...

Page 7: ...set 2 copy key Display lamp 2 Density selection key Display lamp 3 Paper jam lamp 4 Paper supply lamp 5 Tray position Paper jam position lamp 6 Magnification ration lamp 7 Maintenance lamp 8 Copy quantity display 9 Mini maintenance lamp F Toner supply lamp G 10 key pad H Pre heat lamp I Department count end key J All clear key K Clip tray L Sorter key Display lamp M Binding margin key display lamp...

Page 8: ...unit into the installation holes of the copier At that time first insert the rear pins then insert the front pins Check that the multi paper feed unit connecting pins are properly connected Then fix the multi paper feed unit with the two screws which were removed in procedure 2 4 With the above procedure the multi paper feed unit installation is completed Close the upper unit slowly and close the ...

Page 9: ...ach the counter socket SF71B to the mechanical counterat tachment plate 4 Fix the counter socket with a screw and connect the countersock et harness and he copier harness Disconnect the 1P harness connector of the copier and con nectwith the counter socket harness 5 Cut off the notch section of the left cabinet and attach theupper cabinet left and the left cabinet to the copier 2 1 2 3 4 5 2 1 1 2...

Page 10: ...e tray has the capacity of 500 sheets 250 sheets for the SF 2320 In addition to that the optional paper feed unit allows loading of 500 sheets more for the SF CM15 250 sheets for the SF CM16 2 Basic operations Tray paper feed operation When the CPFC Cassette paper feed clutch turn on the paper feed roller shaft the paper feed roller and the take up roller rotate in the direction of A At the same t...

Page 11: ...f the paper feed unit and remove it Since there is the 8 pin connector on the back of the rear frame side it requires some force to remove Carefully pull it out straight Note for assembly 1 There is the 8 pin connector on the back of the rear frame side When assembling it carefully insert 2 The belt must be on the paper feed unit gear and the resist roller gear 1 2 Paper feed roller ass y removal ...

Page 12: ...be activated or inactivated Cancel When this function is activated the time settings in the pre heat function and the auto power shut off function are ignored Auto shut OFF When the copier is left without copying for a certain period this function is used to enable or disable the function of lowering the power consumption Set Auto document feeding unit manual document feed mode By use of the auto ...

Page 13: ...s pressed the mode returns to 2 Paper size setting mode is allowed 4 User simulation code table Program Sim code Selection code Set content Factory setting Auto clear passing time setting 1 0 Cancel 1 30 sec 2 60 sec 3 90 sec 4 120 sec 2 Pre heat mode setting and passing time setting 2 0 Cancel 1 1 min 2 15 min 3 60 min 4 120 min 2 Auto power shut off mode setting and passing time setting 3 1 5min...

Page 14: ...e ready state to enter the No When the Dept No is duplicated or 000 and the COPY key is pressed the entered No will blink When the registration No does not exist 12E is displayed Dept No delete 13 0 Deletion of each dept NO 0 Select the Dept No to be deleted with the zoom key and press the COPY key to execute deletion and to return to the user program selection No 1 All dept deletion If the regist...

Page 15: ...k lamp F F F F F Drum mark sensor F F F F F Drum density sensor F F F F F Waste toner bottle F F F F F TC SC case F F F F F TC SC wire F b F b F Suction Suction belt F F F F F Ozone filter Ozone filter F F b Fusing Upper heat roller b b Lower heat roller b b Upper separation pawl F b F b F Lower separation pawl b b Thermistor F F F F F Heat roller gear b b Optical Mirror lens reflector F F F F F D...

Page 16: ...UNPACKING AND INSTALLATION 4 1 5 DESCRIPTION ON EACH SECTION 5 1 6 DISASSEMBLY AND ASSEMBLY 6 1 7 ADJUSTMENT 7 1 8 SIMULATIONS 8 1 9 SELF DIAGNOSTICS 9 1 10 MEMORY TROUBLES FLOWCHART FOR REPLACEMENT OF MAIN CONTROL PWB 10 1 11 MAINTENANCE 11 1 12 ELECTRICAL SECTION 12 1 CONTENTS SHARP CORPORATION This document has been published to be used for after sales service only The contents are subject to c...

Page 17: ... 4 4 6 Toner density sensor level adjustment 4 5 A Developing unit level adjustment 4 5 7 Accessory installation 4 5 A Copier tray installation 4 5 8 Toner supply 4 5 9 Center shift adjustment 4 7 10 Label attachment 4 7 A Label attachment 4 7 11 Optional two step paper feed unit SF CM15 installation 4 8 12 Optional one step paper feed unit SF CM16 4 9 13 Tray paper size selection 4 11 5 DESCRIPTI...

Page 18: ...es 6 20 7 Developing section 6 20 A DV side seals F R replacement Replace every 120K copies 6 20 B DB blade replacement Replace every 120K copies 6 21 C V ring attachment 6 21 D Note for toner hopper drive gear 31T and stirring shaft attachment 6 21 G Developing unit color identification 6 22 8 Operation panel intermediate cabinet 6 22 9 Frame major parts 6 22 9 1 Cooling fan motor replacement 6 2...

Page 19: ...CEMENT 10 1 1 General 10 1 2 Purpose 10 1 3 Remedies 10 1 4 Set value recording sheet 10 3 5 Memory simulation list 10 4 11 MAINTENANCE 11 1 1 Maintenance cycle and maintenance items 11 1 12 ELECTRICAL SECTION 12 1 1 System block diagram 12 1 2 Main circuit 12 3 1 Block diagram 12 3 2 CPU IC6 SC3041K12F 12 4 3 I O IC8 CXD1095Q 12 8 4 Detector circuit of sensor signal 12 11 5 Start stop control cir...

Page 20: ...als The energy saving mode reduces the power consumption 3 High capacity of copying Warm up time is less than 35 sec The first copy of 5 3 sec SF 2020 or 5 8 sec SF 2120 4 Fully expandable system Refer to 2 System configuration 2 System configuration options 10 bin sorter SF S17 Automatic document feeder SF A18 999990 Two step paper feed unit SF CM15 Personal counter Tray reserve SF UB15 One step ...

Page 21: ...ec 5 Jam recovery time 8 sec Conditions After leaving the door open for 60 sec the standard conditions 6 Multi copy Max 99 sheets 7 Original SF 2020 SF 2120 Max original size A3 W letter Reference original size Left side Center Original sensing YES Japan only Sensing size A3 B5R 8 Copy magnification ratio Fixed magnification 200 141 122 115 100 86 81 70 50 9 steps Zoom range 50 200 151 steps by th...

Page 22: ...6 80g m2 Standard paper specified paper special paper OHP film Second original paper postcards without folding 15 20 lbs Single AB series A3 A6R Inch series W letter Invoice 52 128g m2 14 34 lbs 2 Optical section Light source Halogen lamp Exposure system Slit exposure by moving the light source Zooming system By changing the lens positions and the scan speed Lens Fixed focus lens 3 Process Chargin...

Page 23: ...dge 210g x 10 5K x 10 SF 216LT1 5 Color toner Red Color toner cartridge 210g x 1 5K SF 216T2 Blue SF 216T3 6 Color developing unit kit Red Developing unit x 1 Color developer 550g x 1 Color toner cartridge 210g x 1 Storage case x 1 SF 216K2 Blue SF 216K3 7 Upper heat roller kit Upper heat roller x 1 Upper fusing separation pawl x 4 Fusing bearing F x 1 100K SF 216UH 8 Lower heat roller kit Lower h...

Page 24: ...ame Content Life Product name 1 Photoconductor kit Photoconductor drum x 1 Cleaner bladex 1 Drum separation pawl x 2 50K SF 216DM 2 Black developer Black Black developer x 10 50K x 10 SF 216LD1 3 Black toner Black Black toner bottle 250g x 10 6K x 10 SF 116LT 4 Upper heat roller kit Upper heat roller x 1 Upper fusing separation pawl x 4 Fusing bearing F x 1 100K SF 216UH 5 Lower heat roller kit Lo...

Page 25: ...ut 12 5kg Power source Supplied from the copier equipped with the power source Power consumption 73W Functions Original detection on the tray Available For originals of indefinite sizes scanning is made Detection size Japan A3 B4 A4 A4R B6 B6R Inch series 11 17 8 1 2 14 8 1 2 11 8 1 2 11 R 8 1 2 5 1 2 EX AB series A3 B4 A4 A4R A5 Original mixture Allowed However no linkage with the AMS Original re...

Page 26: ... No of stapled sheets 30 sheets 80g m2 Binding reference Front reference Staple supply Cartridge 5 000 pcs Staple SF SC12 No staple no cartridge no stapler detection Available Staple jam detection Available Manual staple mode Available excluding manual stapling 5 Two step paper feed unit Model name SF CM15 Paper size A3 A5 Paper feed capacity 250 sheets x 2 steps Paper weight 56 80g m2 15 21 lbs P...

Page 27: ...l feed unit 7 Manual feed original guide 8 Manual feed tray 9 Operation panel F Front cover G Power switch H Paper tray SF 2020 Duplex tray SF 2120 I Paper tray J Developing unit grip K Developing unit strap L Toner hopper M Developing unit lock lever N Release lever O Fusing unit P Drum 1 2 3 4 5 13 11 10 9 5 8 7 6 15 14 16 17 18 20 19 12 Upper unit Lower unit 3 1 ...

Page 28: ... AUTO MANUAL PHOTO TRAY SELECT AUTO IMAGE PRESET RATIO 100 200 141 129 121 95 77 64 50 POWERSAVE AUDITCLEAR 11x x x x x No Name No Name No Name 1 1 set 2 copy key Display lamp 2 Density selection key Display lamp 3 Paper jam lamp 4 Paper supply lamp 5 Tray position Paper jam position lamp 6 Magnification ration lamp 7 Maintenance lamp 8 Copy quantity display 9 Mini maintenance lamp F Toner supply ...

Page 29: ...LEAR ORIGINAL SIZE PAPER SIZE EXPOSURE AUTO MANUAL PHOTO PRESET RATIO TRAY SELECT AUTO IMAGE SORTER SORT STAPLE SORT GROUP 14 11 11 11 17 EXTRA 8 8 8 8 5 No Name No Name No Name 1 1 set 2 copy key Display lamp 2 Density selection key Display lamp 3 Paper jam lamp 4 Paper supply lamp 5 Tray position Paper jam position lamp 6 Magnification ration lamp 7 Maintenance lamp 8 Copy quantity display 9 Min...

Page 30: ... fusing section cools down the machine and remove ozone DC brushless G MM Main motor Used to drive the body DC brush H CFM Optical system cooling fan Used to cool and ventilate the optical system DC brushless I LM Lens motor Used to move the optical lens DC stepping J TM Toner motor Used to stir toner DC synchronous K MRM Mirror motor Used to move the mirror base DC stepping L CS2M Paper feed moto...

Page 31: ...ol the paper feed motor and the transport motor I CSD B PWB Used to sense the cassette size of 2nd 4th tray J Motor sensor PWB Encoder for 2nd 4th paper feed motor K Tray module PWB Vertical transport of 2nd 4th cassette JAM detection paper feed clutch interface L DPPD PWB Vertical transport of 2nd 4th tray JAM detection and cover open detection M ADU PWB ADU control N PID PWB Manual paper entry d...

Page 32: ...per is present M PED2 Body lower tray paper presence detection Transmission photo sensor HIGH when paper is present N PED3 Option upper tray paper presence detection 1 Transmission photo sensor HIGH when paper is present O PED4 Option lower tray paper presence detection 2 Transmission photo sensor HIGH when paper is present P Motor sensor 2 Body lower stage paper feed motor encoder sensor Transmis...

Page 33: ...charger U Drum separation pawl V Suction unit W Suction belt X Fusing thermistor Y Heater lamp Z Upper heat roller Lower heat roller Developing magnet roller _ Tray paper feed roller Tray paper feed reverse roller a Tray paper feed take up roller b PE actuator c Transport roller lower follower roller d Transport roller lower e Tray paper feed reverse roller f Tray paper feed roller g Tray paper fe...

Page 34: ...tely If not the plastic parts and the original cover may be deformed Even if the window is of frosted glass there is no difference 2 Avoid high temperature and high humidity and avoid sudden tem perature change Avoid installation near a cooler or a heater If not paper absorbs moisture and dew forms in the machine caus ing paper jam or degraded image quality Standard condition The best condition to...

Page 35: ...base Set the machine in horizontal position in the following procedure Be sure to use a leveling instrument UKOGM0054CSZZ to install the machine on a flat horizontal place Note If the machine is not in horizontal position the toner density control function may not work normally resulting in degraded picture quality 4 Power source 1 Use the power source of the rated capacity 2 Avoid complicated wir...

Page 36: ...ion of the main charger unit to release lock and pull out and remove the main charger unit from the copier 2 Remove one fixing screw of the main charger unit on the back side 3 Press the electrode cleaner onto the tips of the electrode so that the tips are inserted into the cleaner a few times to clean Note Do not move the cleaner back and forth with the electrode tips inserted into it When cleani...

Page 37: ...g lever and remove the developing unit 3 Remove three fixing screws of the toner hopper of the developing unit and remove the toner hopper 4 While supplying developer from the developer supply port of the developing unit turn the MG gear clockwise with a screwdriver or a scale to supply fully in the developing unit 5 Install the toner hopper to the developing unit and fix it with two screws Main c...

Page 38: ...c reading is not performed Do not terminate it halfway 3 Cancel simulation 25 with the CA key 7 Accessory installation A Copier tray installation Install the copy tray to the paper exit section on the left side of the copier 8 Toner supply 1 Shake the toner cartridge right and left several times with the toner cartridge sheet surface facing up 2 Install the toner hopper of the developing unit and ...

Page 39: ...l times to feed toner 5 Hold the grip of the toner hopper shutter and slowly push the shutter completely to the bottom 6 Slide the toner cartridge to the bottom and remove it slowly If the shutter have not been pushed completely in procedure 5 the toner cartridge cannot be slid In that case push the shutter completely and slide and remove the cartridge 7 Hold the grip of the developing unit and in...

Page 40: ... check the center 2 Fig 2 Move the cassette grip cabinet in direction B tighten two fixing screws a and tow fixing screws b in this sequence Make a copy again and check the center 10 Label attachment A Label attachment Attach the magnification ratio select label packed together with the Operation manual to the position shown in the figure below When attaching the label to the copier with the origi...

Page 41: ...ng holes 2 positions on the bottom of the copier Then put the four legs of the copier on the two stage paper feed unit 4 While lifting the lower stage tray slightly pull it out until it stops Then hold the both sides of the tray and lift and remove it 5 Attach the connection adjustment plate as shown in the figure and fix it with two screws A Then fix the left side with screw B Install the paper t...

Page 42: ...eed unit SF CM16 Included parts Disconnect the plug to the main copier unit before performing the following procedures 1 Removing the rear cover to the main copier unit s lower tray Remove the two securing screws which hold in place the cover to the main copier unit s lower tray then remove the rear cover 2 Removing the cut out from the lower tray of the main copier unit Remove the cut out from th...

Page 43: ... parts toward yourself as shown in the illustration and attach it with the two mounting screws A Then attach the left side with the mounting screw B Finally reinsert in the main copier unit the tray that was remove in step 4 Attach the rear side of the main copier unit to the paper feed unit using the two securing screws C 6 Plugging in the relay harness Remove the tape holding the connector to th...

Page 44: ...e another copy to check whether the copies come out properly cen tered When copies come out off center as shown in figure 2 Move the front part of the tray in direction B tighten first the two a securing screws then the two b securing screws then make another copy to check whether the copies come out properly cen tered 13 Tray paper size selection Described with the SF 2020 Select the necessary si...

Page 45: ...d and insert the tray then push it into the machine 5 Set paper and change the paper size display Remove the paper size display plate and insert it so that the selected paper size is visible from the paper size display slit When A5 size is selected set to Special A3 B4 A4 B5 A4R B5R R R A3 size B4 size A4 size Hole B5 size Special Hole Hole Hole Hole Hole Hole Hole When the size is changed to A5 f...

Page 46: ...ay and manual feed The tray has the capacity of 500 sheets 250 sheets for the SF 2120 In addition to that the optional paper feed unit allows loading of 500 sheets more for the SF CM15 250 sheets for the SF CM16 2 Basic operations Tray paper feed operation When the CPFC Cassette paper feed clutch turn on the paper feed roller shaft the paper feed roller and the take up roller rotate in the directi...

Page 47: ...the photoconductor As a result a dirty copy of white back ground is generated To prevent against this a voltage of the same polarity and higher than the residual potential is applied to the MG roller preventing toner from being attached to the photoconductor surface 4 DV harness The toner density sensor the developing bias and the developing unit identification resistance harness For details refer...

Page 48: ...m ing of 151 steps in 1 increment in the range of 0 50 to 2 00 Exposure is adjusted by changing the copy lamp voltage The AE sensor is provided in the zoom base to sense the density of the original The copy lamp light is reflected by the original to the AE sensor which senses the density of the original and adjust the copy lamp light quantity according to the density The exposure system is the sli...

Page 49: ... to change the distance between ten original and the drum 4 Lens fixed focus lens Construction 1 group 3 lenses Brightness F8 5 Focus 195mm 1 5 Lens home position sensor LHPS This sensor senses the lens home position The output signal of this sensor is the basic signal to control the copy magnification ratio 6 Lens base The lens is mounted to the lens base which is shifted toward the paper feed di...

Page 50: ...mal temperature rise in the optical system If the temperature rises abnor mally it turns off the copy lamp power directly 100V series 117 C 200V series 117 C 15 Reflector Light from the copy lamp is reflected by the reflector to the original 16 Exposure adjustment plate Four exposure adjustment plates are attached to the copy lamp unit to adjust exposure balance in back and forth direction of the ...

Page 51: ...s shorter The distance between the No 4 5 mirror unit and the lens is greater The distance between the original and the exposure sur face of the drum is greater than that in the normal copy Copy lamp control in each copy density Execute Sim 46 01 to determine the copy lamp application voltage CLV in EX1 and EX5 Then divide the difference between the voltages of EX1 0 and EX5 0 into nine The applic...

Page 52: ...or initialization measure light quantity of the copy lamp Obtain the average value from the four measurement values and use the average value as the reference value for correction Obtain the average value of four AE sensor values and store it 2 Dirt correction 1 Measure light quantity when performing mirror initialization 2 Store the correction data into memory 3 Reset the register inside the CPU ...

Page 53: ...he process separation mecha nism is adopted To prevent high voltage leakage by the loose corona charge unit a one touch stopper mechanism is adopted 1 Photoconductor This model uses OPC organic photoconductor as photoconduc tive material φ50 mm Stirring roller MG roller Proccess unit DV drive unit Main drive unit Main motor Fuser unit PS roller Multi manual insertion paper feed unit Option Cleaner...

Page 54: ...ging Cleaning Transfer Drum upper image paper synchronization Development Exposure Blank lamp Original Copy lamp Mirror lens High voltage unit Toner Developer Resist roller Paper feed roller Transportroller Manual paper feed Paper cassette Image forming process Paper transport path Discharge Main corona unit Blank lamp Cleaning blade Discharge lamp Seperation pawl Seperation corona unit Transfer c...

Page 55: ...ss light low intensity to the OPC drum Positive or negative charges are generated in the CGL of the OPC drum where lights are radiated Negative charges generated in the CGL move towards the positive charges in the aluminum layer generated in step 3 While the positive charges in the CGL move towards the negative charges on the CPU drum surface generated in step 3 Therefore positive charges and nega...

Page 56: ...xposure Main corona unit Blank lamp Cleaning blade Discharge lamp Seperation pawl Seperation corona unit Transfer corona unit Resist roller MG roller Developer unit CTL CGL OPC drum CTL CGL OPC drum Low intensity in the area corre sponding to the darker density portion of the document Medium intensity in the area corre sponding to the medium density portion of the document HIgh intensity in the ar...

Page 57: ...copy paper potential to the same level as the drum surface potential The attraction be tween the copy paper and the drum is weakened by this allowing separation of the copy paper by its own extending force If the copy paper is not separated by the separation charger it is separated by the separation pawl mechanically Main corona unit Blank lamp Cleaning blade Discharge lamp Seperation pawl Seperat...

Page 58: ...PC drum surface Therefore the positive and the negative charges are neutralized in the aluminum layer and on the OPC drum surface removing the residual charges on the OPC drum surface As a result the OPC drum surface potential becomes 20V 30V CGL OPC drum CTL Main corona unit Blank lamp Cleaning blade Discharge lamp Seperation pawl Seperation corona unit Transfer corona unit Resist roller MG rolle...

Page 59: ...level as the initial image density is provided That is the process conditions are established and the high voltage output and exposure level are controlled to stabilize the toner density In this model the density sensing level is automatically set DL BL Charge Exposure Develop Transfer Separate Clean Dark area Developing bias voltage Light area Residual potential 730V 215V Cleaner OPC drum Develop...

Page 60: ...ty is calculated to control the copy lamp To correct the MC grid voltage the delta value of the sensitivity level when the initially recorded reference grid voltage is 440V and the MC grid voltage where the same density is obtained in process control is fed back to the MC grid voltage of each mode Process control timing In the SF 2035 the process control is performed in the following timing 1 When...

Page 61: ...orted to the fuser section by rotations of the resist roller and the transport belt The drum separation pawl is provided under the process unit It is made by turning on separating the solenoid inside the main drive unit 2 Basic composition and functions 1 Transport belts 2pcs The transport belts are provided with notches to hold paper rear ends 6 Fusing paper exit section 1 Upper heat roller The u...

Page 62: ... to the main char ger 2 Basic composition 1 Main charging corona High voltage transformer MHVG Grid voltage Developing bias voltage Standard mode 750V Photo mode 500V 200V TSM mode 650V 2 Main transfer corona High voltage transformer THVG 41µA Electrode sheet front rear balance difference max 7 0µA 3 Separation corona High voltage transformer SHVG AC4KV 0 1KV 8 ADU unit SF 2120 only 1 Basic operat...

Page 63: ...er feed clutch ON 9 ADU paper feed detection ADU paper entry exit sensor ON F ADU paper transport detection ADU transport sensor ON 9 6 5 3 1 2 4 7 1 10 8 5 1 2 DPTD DDM rotary encoder sensor DPHPS1 Alignment plate home position sensor ADU sensor list Signal name Name Type Operation function DPHPS1 Alignment plate home position sensor Transmission sensor LOW at home position DPHPS2 Rear edge plate...

Page 64: ... paper feed unit and remove it Since there is the 8 pin connector on the back of the rear frame side it requires some force to remove Carefully pull it out straight Note for assembly 1 There is the 8 pin connector on the back of the rear frame side When assembling it carefully insert 2 The belt must be on the paper feed unit gear and the resist roller gear 1 2 Paper feed roller ass y removal 1 Rem...

Page 65: ... details refer to the 1 1 2 Disengage the hook section of the front frame side bearing re move the connector on the rear frame side and remove the PS front roller ass y from the paper feed frame 1 4 Separation roller 1 Remove the paper feed unit and remove the separation roller 1 5 Paper feed roller take up roller 1 Remove the paper feed roller and remove the take up roller 2 Remove the roller hol...

Page 66: ...paper feed unit Refer to 1 6 2 Remove the paper feed frame 4 screws 2 connector 3 Remove the separation roller 1 8 Transport roller Perform similarly for the optional paper feed unit 1 Remove the lower paper feed unit Refer to 1 6 2 Remove the stopper slide the bearing and remove the transport roller 1 9 Lower paper feed roller take up roller For removal of these rolls refer to 1 2 Paper feed roll...

Page 67: ...ction of the TC case as shown below 4 When attaching the resist roller ass y to the copier attach over the upper side of the PS roller lower mylar then rotate the roller to set the mylar to the normal position If the mylar is deformed it may cause paper jam Replace it if deformed 2 2 Transport belt 1 Remove the fusing unit 2 Remove the TC case 3 Disengage the transport belt drive shaft holder on t...

Page 68: ...ement 1 Remove the fusing cover fixing screw 1 pc and slide the cover to the front side to remove 2 While pressing the Fasten terminal projection connected to the thermostat remove the lead wire from the connection section 3 Remove the fixing screw of the lamp holder on the upper side of the rear frame and remove the holder 4 Pull out the heater lamp from the front frame side For assembly reverse ...

Page 69: ...r separation pawl upright slide it to the rear frame side and keep the lower separation pawl upright 3 Remove the lower heat roller together with the bearing For assembly reverse the disassembly procedures Note for assembly Assemble so that the lower separation pawl is on the upper side of the lower heat roller At that time return the separation pawl which was set upright in procedure 2 3 6 Lower ...

Page 70: ...system are described here 1 Copy lamp replacement 1 Remove the OR guide and remove the table glass 2 screws 2 Slide the copy lamp unit to the notch at the rear of the upper cabinet Push the copy lamp electrode section A in the arrow direction B and remove the lamp Do not move the optical adjustment plate If it is moved the light balance will go wrong Note Be careful of the installing direction of ...

Page 71: ...e copy lamp unit 7 Rotate the copy lamp unit counterclockwise to remove B Mirror base wire removal 1 Remove the upper cabinet L and the left cabinet 2 Remove the mirror wire spring from the groove on the left side of the optical base plate 3 Remove the mirror base wire from the winding pulley Remove he wire fixing screw C No 2 3 mirror unit mirror base B removal 1 Move the mirror base B to the cen...

Page 72: ...te hook 2 Pass the mirror base wire along the groove outside the double pulley Note At the time put the No 2 3 mirror unit on the mirror base positioning plate Hold it so that the winding pulley groove is on the upper side and wind the wire 4 Pass it under the moving pulley supporting plate and wind it around the fixed pulley 5 Pass it along the groove inside the double pulley 6 Pass in through th...

Page 73: ...he parallelism of the mirror base B is proper and there is no further adjustment 2 If the parallelism of the mirror base B is improper as shown in the figure below one side of the mirror base B is in contact with the positioning plate and the other side is not in contact perform the following procedure 3 Loosen the mirror base drive pulley fixing screw on the side where the mirror base B is not in...

Page 74: ...e mirror base B into contact with the positioning plate put a flat jig such as a scale edge onto the right surface of the optical base plate paper feed side press the projection of the copy lamp unit onto the jig and fix it with two screws Note When tightening the copy lamp unit fixing screws be sure to press the projection onto the scale 5 No 4 5 mirror unit mirror base C replacement A No 4 5 mir...

Page 75: ...nt plate attach it to position 5 in the above description Fit the arrow positions of the drive holder 4 and 5 as the previous state When the arrow positions cannot be fit 1 Loosen the zooming rack screw and slide it to adjust 2 Loosen the two screws which are fixing the driver holder 4 and 5 and the drive latch 4 and 5 Adjust with the drive holder 4 and 5 After completion of adjustment tighten the...

Page 76: ...ble glass 2 Remove the dark box cover upper 3 Remove the lens motor 4 Remove drive spring 4 and 5 5 Remove the E ring which is fixing the roll holder drive shaft and remove the roll holder unit 6 Remove the zooming cam and the zooming cam drive gear which are fixed with screws 6 13 MC Service ...

Page 77: ...the lens unit itself is moved the wire may slip at the L drive pulley and the relative position of the lens unit and No 4 5 mirror unit is shifted resulting in improper focusing 2 Procedures 1 Manually move the lens carriage unit to fit the lens carriage hole with the optical unit frame hole which is not the home position hole but the reduction side hole Insert a pin into the holes fix the lens un...

Page 78: ...t etc Refer to 7 ADJUSTMENTS 7 Lens unit replacement A Lens removal 1 Remove the lens wire Refer to the procedure of A Lens wire removal in 16 Lens wire replacement 2 Hold the lens drive shaft with radio nippers and remove it 3 Remove the lens drive shaft from the notch in the optical base plate The lens unit is removed at that moment B Lens unit installation Reverse the disassembly procedures Ref...

Page 79: ...position F of grid holder C in the above figure is aligned with marking position F of MC holder D and tighten screw A 4 Remove the screw and remove the charging plate saw teeth ass y Cleaning replacement and note 1 When attaching the screen grid be careful not to deform and dirt the screen grid Check that the screen grid is securely in position 2 Be careful not to deform the saw teeth edge of the ...

Page 80: ...e unit to the body check that the grounding spring is in contact with the TC SC case metal section on the rear and the front sides Visually check and push the center of the TC SC unit to check that it can be moved up and down 6 Transfer mylar lower 6 Process section 6 1 Process unit 1 Open the front cover remove the developing unit and open the clamshell 2 Remove process cover A Loosen the screw t...

Page 81: ...se of toner transport pipe B and pull it out At this time toner may be spilled Put a sheet under the pipe 4 While pushing waste toner bottle in the direction of A and lift it and remove Note for assembly maintenance 1 As shown in the figure below attach so that two projections of gear 19T g are on the rear frame side on the screws supporting plate f side 2 Replace the waste toner bottle when waste...

Page 82: ...der slide the holder and remove it 2 Tighten the blank lamp unit position adjustment screw completely and remove the unit rear side then loosen the screw 3 Remove two connectors of the blank lamp PWB and remove the blank lamp unit Note When the unit is installed or replaced adjust according to Blank lamp position adjustment in 7 ADJUSTMENTS 6 5 Discharge lamp unit Clean every 50K copies 1 Remove t...

Page 83: ...ws 6 9 Drum mark sensor PWB Clean the sensor section every 50K copies Remove the holder from the process unit 3 blue screws and re move the marking sensor PWB 1 screw 6 10 Toner reception seal Replace every 50K copies Remove the drum and remove two screws to remove the seal 7 Developing section A DV side seals F R replacement Replace every 120K copies 1 Remove two screws which are connecting the h...

Page 84: ... A between the V ring and each roller 3 Attach the MG roller and the right V ring as shown in the figure 3 0 0 5 Note When replacing the MG roller attach the plate MFE Do not allow contact between φ 6 5 hole in the plate MFE and the magnet fixing shaft Remove oil and dirt from the attachment section Note When attaching the MG roller put the milled surface up D Note for toner hopper drive gear 31T ...

Page 85: ... con nected to the operation panel unit 2 Remove the operation panel unit 3 Remove the process cover unit remove six screws C and two connectors and remove the intermediate cabinet 9 Frame major parts 9 1 Cooling fan motor replacement A Cooling fan motor removal 1 Remove the original cover the original guide the upper cabinet left and the upper cabinet right 2 Remove the upper cabinet and the rear...

Page 86: ...wed from the rear of the machine Check that air blows in the arrow direction toward the ma chine 9 2 Power unit 1 Remove the rear upper and lower cabinets 2 Remove two connectors hold the PWB fixing bush with radio nippers and slide it toward the paper exit side to remove 9 3 Tray size detecting PWB 1 Remove the rear upper lower cabinets 2 Remove the power unit 3 Remove one fixing screw one connec...

Page 87: ... connectors of the AC power PWB and remove one grounding wire connected between the AC power PWB and the copier chassis 4 Remove two screws which are fixing the AC power PWB and remove the PWB 9 6 Ozone filter Check every 50K copies and clean every 100K copies 1 Remove the upper cabinet left and the left cabinet 5 screws 2 Remove the ventilation fan motor 2 screws SF 2020 3 Remove the process unit...

Page 88: ...r and the E ring At this time slide the bearing from the guide section in advance 2 Lift the manual feed stopper and remove the manual feed shaft ass y 3 Remove the take up roller 4 Remove three E rings and remove the manual feed shaft then the paper feed roller will come off Note for assembly The paper feed roller is provided with the one way clutch which must be installed in the proper direction...

Page 89: ...ing of the reverse roller and remove the pressure spring 5 Remove the reverse shaft fulcrum lever ass y and slide the re verse roller shaft in the arrow direction to remove 6 Remove the reverse roller Paper feed roller Perform the same procedures for the take up roller 1 Remove the extension stopper and remove the ADU unit from the copier 2 Put the ADU unit up side down The lower side facing up 3 ...

Page 90: ...xing screw M3 6 of the paper exit plate spring 3 Remove two E rings 7E at the both ends of the reverse roller 4 Remove the gear and the parallel pin 3 10 from the reverse roller 5 Remove two E rings E7 inside of the gear 6 Remove two bearings at the both ends of the reverse roller 7 Slide the reverse roller in the direction of Q 12 Paper feed unit SF CM15 SF CM16 option This unit had two stages of...

Page 91: ...within the specified range 0 6 0 03mm Note 1 When inserting the clearance gauges be careful not to scratch the plate D and the MAG roller Note 2 When adjusting or checking be careful not to allow foreign materials oil etc to attach to the MAG roller sleeve 6 After adjustment apply screw lock to the four screws A For color developing unit use the specified value of 0 7 0 03mm for adjustment 1 2 Dev...

Page 92: ... is as shown below After tightening the screw apply screw lock to it A 17 6mm MG adjustment plate MG adjustment plate fixing screw Bias terminal MG adjustment plate 2 Optical system 2 1 Adjustment items 1 Lens reference position adjustment 2 No 4 5 mirror reference position adjustment 3 Vertical copy magnification ratio adjustment 4 Resolution adjustment 5 Horizontal copy magnification ratio adjus...

Page 93: ...ference position adjustment Manual adjustment 1 Image distortion center shift check 2 Normal x 1 00 zooming x 2 00 resolution focus check 3 Normal copy magnification ratio vertical horizontal check 4 Exposure balance blank lamp position lead edge variation check END Image distortion Vertical skew copy adjustment Horizontal skew copy adjustment Center shift Lens center shift adjustment Resolution f...

Page 94: ...bel at tached to position B shown in the figure below into the follow ing formula and input the obtained value 50 O L value 5 Correction reference value Example When the lens value is 1 2 50 1 2 5 44 Correction reference value input value Check after adjustment Be sure to check that the magnification ratio cam is at the home position as shown in the figure below B No 4 5 mirror reference position ...

Page 95: ... parallel and that the focus is proper before executing this adjustment This adjustment must be performed in the following cases When the lens home position sensor LHPS is replaced or its installation position is changed When the lens is replaced When the mirror base is replaced or its installing position is changed When the main PWB is replaced When the EEPROM inside the main PWB is replaced Proc...

Page 96: ...ification ratio according to the flowchart shown in 6 10 Make a copy at 50 11 Check that the copy magnification ratio is within the specified range 100 0 9 If it is in the specified range the vertical copy magnification ratio is completed If not enter in simu lation 48 1 as follows Perform the following key operation C is displayed on the third digit of the copy quantity dis play and the previousl...

Page 97: ...2 Check the resolution at the four corners and the center of the copy image If the resolutions are within the specified range the adjustment is completed If not adjust by shifting the rela tive position of the zooming can to the drive cam 3 Turn off on the power to initialize the lens and No 4 5 mirror unit Check the focus in the enlargement mode again Resolution standards Unit lines mm Copy cente...

Page 98: ...value 1 99 is displayed Under this state make a nor mal copy and calculate the copy magnification ratio 2 Replace the displayed value with the copy magnification ratio correction rate obtained in 1 Input value Previously set value Copy magnification ratio correction rate 10 Example When the previously set value is 25 the input val ues of examples 1 and 2 are as follows Example 1 35 25 1 10 Example...

Page 99: ...5 55 55 0 9 46 54 54 0 8 46 54 54 0 7 47 53 53 0 6 47 53 53 0 5 43 52 52 0 4 48 52 52 0 3 49 51 51 0 2 49 51 51 0 1 50 50 50 0 50 50 50 0 1 50 50 50 0 2 51 49 49 0 3 51 49 49 0 4 52 48 48 0 5 52 48 48 0 6 53 47 47 0 7 53 47 47 Lens display value Sim 48 01 Zoom correction Enlargement Zoom correction Reduction Sim 48 01 Sim 48 01 0 8 54 46 46 0 9 54 46 46 1 0 55 45 45 1 1 55 45 45 1 2 56 44 44 1 3 5...

Page 100: ...not move the flange and the mirror base drive pulley shaft 5 Tighten the fixing screw of the mirror base drive pulley 6 Perform procedures 1 3 7 If La Lb is not satisfied perform procedures 4 and 5 If La Lb the adjustment is completed Repeat procedures 1 6 until La Lb is satisfied H Horizontal skew adjustment a This adjustment is performed in the following cases When a horizontal skew is made When...

Page 101: ...e When turning the eccentric screw remember how much it is rotated from the original position When the eccentric screw is turned 36 degrees the height of the front frame side of the No 4 5 mirror base is increased or decreased by 2mm and the difference La Lb is varied by 4mm If the above adjustment is not effective then follow the Adjustment procedure 2 Adjustment procedure 2 1 Move the mirror bas...

Page 102: ...t reference plate and the right upper side cabinet and remove the document table glass 6 Loosen the three fixing screws of the optical system unit and slide the optical system unit to adjust the center position 7 After adjustment set the removed parts in the reversed se quence make a copy of the test chart to check that the center shift is within the specified range 0 2 0mm If the center shift is ...

Page 103: ...edge adjustment is performed with simulation 50 01 and 50 02 When the copy lead edge adjustment is made with simulation 50 01 In this simulation the following keys and the display section have special functions Reduction key Makes the magnification ratio 50 Enlargement key Makes the magnification ratio 200 key Pressing the key changes A b d A sequentially and the set value corresponding to the dis...

Page 104: ...nd adjust again until the image loss is within the above range Note The above image loss range is effective only for simulation 50 01 and is not the final one 8 Put a scale and an A3 11 17 white paper on the original table as shown below 9 Press the zoom key to display C in the lowest digit of the magnification ratio display Void amount adjustment mode 10 Make a copy and enter the normal copy lead...

Page 105: ... ready PSW A copy at 200 is made 5 Measure the distance between the copy paper lead edge and the copy image lead edge in each copy Enter L1 and L2 values with the zoom key and the 10 digit key pad With this operation RRC A and RRC B values in simulation 50 01 are automatically calculated and stored Input procedure Example When L1 24 5 mm and L2 15 0mm Check that the lowest digit of the magnificati...

Page 106: ...tion shaft Japan AB series EX AB series EX inch series 1 2 B5 3 A4 A4 LT 4 B5R 5 A4R A4R LTR 6 B4 B4 LG 7 A3 A3 17 The manual paper feed tray selection lamp is used to check open close of the original cover It lights up when the original cover is open and goes off when closed When the original cover close is detected all the original size dis play lamps go off Light reception level and judgement l...

Page 107: ...7 C Copy density adjustment procedure 1 Set the automatic exposure level to 3 When the mode select key is pressed for 5 sec in the photo mode the mode is switched to the automatic exposure mode In this mode press the exposure select key to set the exposure level to 3 2 Drum sensitivity setting 1 Execute Sim 26 07 and check that the top digit of the 9 digit drum number printed on the flange in fron...

Page 108: ...he copy quantity display greater The range of set values is 1 99 Entry number 1 corresponds to a change of about 0 33V in the copy lamp voltage 3 Make a copy When the copy exposure is within the exposure limit sample range press the DARK exposure key to set to exposure 5 b is displayed on the copy quantity display 4 Make a copy Check that 2 of the test chart is clearly copied When too light Make t...

Page 109: ...Press the DARK exposure key to set to exposure 5 H is displayed on the copy quantity display 4 Make a copy Check that 3 of the test chart is slightly copied When too light Make the value displayed on the copy quantity display smaller When too dark Make the value displayed on the copy quantity display greater 2 Automatic exposure toner save mode adjustment 1 Press the exposure select key to set to ...

Page 110: ...re 1 Execution of Sim 8 01 Manual exposure copy density adjustment Execution of Sim 46 01 ME1 ME5 TSM mode copy density adjustment TS1 TS5 Photo mode copy density adjustment PE1 PE5 1 10 W 2 3 4 5 6 7 8 9 Not copied Slightly copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Slightly copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Sl...

Page 111: ...duction copy x 0 64 on an A3 paper 11 x 17 with the original cover open 3 Measure the black background sizes on both ends and slide the blank lamp unit back and forth to adjust so that the size difference is within 1 mm B High voltage output balance adjustment This model employs the one transformer system where the output power is common to the charging charger MC and the transfer charger TC The f...

Page 112: ... the transfer charger wire and attach the transfer separation charger unit to the copier Do not install the main charger unit 7 Connect the electrode sheet and the digital multi meter or an ammeter Manually turn on the door switch Note Check that the black clip is firmly grounded to the chassis When the UKOGE0043CS01 is used Control 1 Set to 2 of DCmA Red clip Connect to Blue clip Connect to When ...

Page 113: ...o adjust so that the measurement value by the tester in the standard mode A is 750 5V Input value 1 corresponds to 5V For the voltage check enter the value with the 10 key pad and press the PRINT button to store it and press the PRINT button again and measure the voltage with the tester while copying 6 Adjust similarly in the photo mode b and in the toner save mode C Check the GP patch d after adj...

Page 114: ...play Is there a sub code YES NO Press the print key Press the print key 00 blinks on the copy quantity display Ready for entry of the sub code Enter the sub code with numeric keys Press the print key Is the test command for operation check Operations according to the simulations are performed The set adjustment value or the counter value is displayed on the copy quantity display NO YES To change t...

Page 115: ... feed clutch 10 Toner motor aging 14 Trouble cancel Excluding U2 trouble 15 Waste toner full blinking cancel 16 U2 trouble cancel 20 Maintenance counter clear 21 01 Maintenance cycle setting Main code Sub code Content 22 01 Maintenance counter display 02 Maintenance preset counter display 03 JAM memory display 04 Total JAM counter display 05 Total counter display 06 DV counter display 07 DV preset...

Page 116: ...B series for FC 4 SUK 10 Taiwan China 5 SCA Cassette size switch table SW2 SW1 SW0 Inch series AB series Inch series For FC AB series For FC Taiwan China No cassette No cassette No cassette No cassette No cassette WLT A3 WLT A3 A3 LG B4 LG B4 B4 LT A4 LT A4 A4 extra B5 8 5 13 8 5 13 B5 INV A5 INV A5 extra LTR A4R LTR A4R A4R extra B5R extra extra B5 Switch ON Switch OFF 8 3 MC Service ...

Page 117: ...per empty sensor ç Timing sensor Drum position jam lamp Repulsion sensor Resist position jam lamp ADF open close sensor ADF position jam lamp Paper feed cover sensor Paper exit position jam lamp Reversing section cover sensor Manual paper feed selection lamp If at that time the magnification ratio display key is pressed the third digit of the multi display is changed to B and the following display...

Page 118: ...and the following display is made Sensor name Operation panel LED Pinch hold home sensor Jam lamp ê S54 only Stapler home sensor Paper exit position jam lamp S54 only Stapler paper sensor Paper empty jam lamp ç S54 only Stapler near end sensor Resist position jam lamp S54 only 03 Sorter individual load operation check Transport motor 04 Sorter individual load operation check Bin motor 05 Sorter in...

Page 119: ...warm up time display set the copy quantity and press the PRINT button to make the set number of copies repeatedly After the interval time 2 min from completion of making the set number of copies the machine resumes copying 08 Warm up time display Aging function is deleted from SIM 7 1 08 01 DVBIAS check The developing bias is turned on for 30 sec 02 MTHV main transfer grid check ME The main transf...

Page 120: ...4 FC A4R A4 Home position Inch series foolscap area WLT LG LTR LT INV Home position 05 Gate solenoid ON OFF check SF 2120 only The gate solenoid is turned on off periodically 10 Toner motor aging The toner motor is turned on 14 Cancel of troubles except for U2 Troubles except for U2 are canceled and the simulation is also canceled automatically 15 Cancel of waste toner full è blinks The waste tone...

Page 121: ...yed on the copy quantity display 05 Total counter display The total counter value is displayed on the copy quantity display 06 Developer counter display The counter value of the developer which is installed is displayed on the copy quantity display 07 Developer preset counter display The developer replacement cycle mini maintenance cycle for Japan of the developer which is installed is displayed o...

Page 122: ...and the discharge lamp for 3 min The input value of the toner density is displayed on the second digit of the copy quantity display during the main motor is rotating The third digit indicates the color of developer Copy quantity display Color of developer Third digit Second first digit A 1 99 Black b Red C Blue 02 Automatic developer adjustment Same as SIM 25 1 The average value of toner density s...

Page 123: ...urrently set original density is displayed on the copy quantity display Enter the set value and press the PRINT button to store it Set value Original density 0 Normal Initial value 1 Thin original When a dark original is copied in the AE mode the lead edge about 4mm is not copied If it is necessary to copy the lead edge set this simulation to 1 13 Warm up mode setting Used to set the main motor op...

Page 124: ...r simulation is set as the initial value 30 01 Paper sensor state display Used to monitor the ON OFF state of the sensors in the main body with the LED on the operation panel Sensor name Operation panel LED PID Manual feed tray selection lamp PPD Drum position jam lamp PPD1 Resist position jam lamp PPD2 Main body lower step tray position jam lamp PPD3 Paper empty lamp ç PPD4 Jam lamp ê POD Paper e...

Page 125: ... of SIM 41 1 is performed After completion of reading the original sensor inputs the average value of the two inputs is stored as the original judgement level 03 Original sensor light reception level and original judgement level display Used to display the original sensor light reception level and the original judgement level on the copy quantity display Display is selected by the magnification ra...

Page 126: ...tion The initial value is 7 All corrections are valid The grid voltage correction is always valid regardless of set value Even if it is set to 0 the grid voltage correction is not canceled 05 Grid voltage correction operation test Used to perform the grid voltage correction and to display the measure data on the copy quantity display When this simulation is executed the grid voltage correction is ...

Page 127: ...d the drum mark sensor are changed in 5 steps and each light reception level is read After completion of operation the measured data are displayed on the copy quantity display Since there are two or more display items the third digit is used to make distinction between the light reception level and the original judgment level and the lower two digits are used to display the data The display is sel...

Page 128: ...hour E 0 99 DV unit black rotating time accumulated value When the display value is increased by 1 it corresponds to one hour 09 Grid voltage correction optical dirt correction drum membrane decrease correction data display the newest value Used to display each correction data of the grid voltage correction the optical dirt correction and the drum membrane decrease correction on the copy quantity ...

Page 129: ...digits are used to display the data The display is selected by the magnification ratio key Copy quantity display Display data 3rd digit 2nd 1st digits A 1 99 Initial grid bias data normal mode Set the grid voltage to 750V When the grid voltage is decreased by 1 the voltage is decreased by 5V When the grid voltage is increased by 1 the voltage is increased by 5V b Initial grid bias data Photo mode ...

Page 130: ...nt Used to read the E sensor input value when the copy lamp is lighted at the specified voltage and to set the AE sensor gain When this simulation is executed the mirror base is initialized and fed to the measurement position After completion of feeding the previously measured AE sensor input value is displayed on the copy quantity display and the ready lamp is lighted Press the PRINT button and t...

Page 131: ...nd 200 copy 2 Measure the distance between the paper lead edge and the image lead edge in each copy mode 3 Enter the measured value in the following formula to obtain resist adjustment A and B 200 lead edge shift L1 100 lead edge shift L2 Resist adjustment A 6 151 L1 L2 Resist adjustment B 15 385 L2 7 692 L1 4 Set the obtained values 02 Lead edge image position adjustment measurement value substit...

Page 132: ...er the set value is the wider the rear edge plate home position is 03 ADU transport motor adjustment SF 2120 only Used to vary the transport motor speed in the case of ADU paper entry When this simulation is executed the currently set adjustment value is displayed on the copy quantity display Enter the set value and press the PRINT button to store it Set value Transport speed 50 150 mm s 130 mm s ...

Page 133: ...owered to 10Wh The time to start this function is set in the range of 5 min 120 min 30 min When this function operates al the lamps on the operation panel except for the pre heat lamp are turned off To return to the initial state Press the COPY button The machine returns to the initial state Auto pre heat control This function learns the use conditions of the copier to automatically control the ti...

Page 134: ...in 4 120 min 2 Auto power shut off mode setting and passing time setting 3 0 Cancel 1 5min 2 15 min 3 30 min 4 60 min 5 120 min 2 Program Sim code Selection code Set content Factory setting Auto pre heat control mode setting and cancel 4 0 Cancel 1 Setting 0 Auto document feeder manual document feed mode setting 5 0 Cancel 1 Setting 0 Sorter take out mode 7 0 Cancel 1 Setting 1 Auto paper selectio...

Page 135: ... display After repairing the trouble section clear the self diag display accord ing to the table below Clearing the self diag display Self diag display Display clearing procedure L1 L3 L4 L5 L8 Turn off on the power H3 H4 Execute simulation 14 U2 Execute simulation 16 CH PC When the trouble is cancelled the display is cleared YES NO A trouble occurs The abnormalality is detected by sensors and det...

Page 136: ... or less U2 01 Backup memory trouble The counter addition value and the check sum value are different from each other 04 Backup IC EEPROM access error Data read write to the backup IC EEPROM cannot be performed U4 SF 2120 only 00 ADU communication error A communication error occurs between the ADU and the copier 02 Alignment plate motor trouble The initial operation returning to the home position ...

Page 137: ...lower 32 Drum mark sensor trouble During one and a quarter rotations of the drum the drum mark is not sensed the sensor input does not become HIGH The drum mark sensor input level is not in the specified range 33 Grid voltage correction trouble Limit over When obtaining the grid voltage correction value the result of the patch voltage is not in the range of 200 650V 35 Grid voltage correction trou...

Page 138: ...machine properly Use the attached service memory data recording sheet to memorize the newest data when servicing in order to cope with the above situations This improves efficiency in servicing and realizes quick recovery 3 Remedies Perform the procedures according to the following flowcharts Sim in the flowchart means Simulation Memory trouble Procedures for memory trouble main control PWB replac...

Page 139: ... body resist roller and the copy paper recorded Use Sim 51 02 to set the adjustment value of contact pressure between the main body resist roller and the copy paper Make a copy and adjust the copy density Make a copy and adjust the vertical magnification ratio Make a copy and adjust the horizontal copy magnification ratio Make a copy and adjust the contact pressure between the main body resist rol...

Page 140: ...r save mode Manual copy mode density level 5 Toner save mode Auto copy mode density level 1 Not toner save mode Auto copy mode density level 5 Not toner save mode Auto copy mode density level 1 Toner save mode Auto copy mode density level 5 Toner save mode Photo copy mode density level 1 Not toner save mode Photo copy mode density level 5 Not toner save mode 47 The AE sensor and the optical sectio...

Page 141: ... density level 1 Not toner save mode Photo copy mode density level 5 Not toner save mode 47 The AE sensor and the optical section characteristics memory data for the change in the copy lamp application voltage 8 17 48 01 50 The vertical copy magnification ratio adjustment value 8 17 02 50 The horizontal copy magnification ratio adjustment value when the document table is used 8 18 Developer unit 2...

Page 142: ...F b Discharge lamp F F F F Blank lamp F F F F Drum mark sensor F F F F Drum density sensor F F F F Waste toner bottle b b b b TC SC case F F F F TC SC wire F b F b Suction Suction belt F F F F Ozone filter Ozone filter F F Fusing Upper heat roller b b Lower heat roller b b Upper separation pawl F b F b Lower separation pawl b b Thermistor F F F F Heat roller gear b b Optical Mirror lens reflector ...

Page 143: ... VD1 VD2 GND CSD PWB GND VD2 GS VB1 VFM2 VB1 SFM RRC VB1 VB1 VB1 GND MAIN PWB TM GND VH1 M uN PID PWB TRC CP FC1 PPD1 PWB KT PWB VCL 8V GND FW VD1 5V VD2 5V ADUD VH1 VB1 24V HOUND B ONLY DC PWB MAIN SUB VC PAM1 ADU VH3 VB2 GND MOTOR GND DPHPS1 DPHPS2 VH1 VB1 VD2 GND VH2 MOTOR VB1 GND VH2 VD2 MOTOR GND VD2 VB1 VH2 SF CM15 CM16 CM15 ONLY CPFC4 PWB CM PWB DPPD4 CSD PWB4 CSM4 MS4 CPFC3 PWB DPPD3 CSD P...

Page 144: ... No JAM RPL ON PSW ON RPL OFF Initial setting Memory transfer Trouble Warm up End of warm up Racing End of racing Copy cycle End of copying Heater lampp ON Mirror initial operation Lens initial operation Process contorol Toner density control 12 2 MC Service ...

Page 145: ...SELC IC1 IC20 MIR PPD IC18 ADFD SORTD PPD SDA SELA DATA0 ADFD GND 5V1 5V2 DC PWB VCL 24V VH DATA1 DATA2 S0 S1 S2 SELA SELB SELC CS2M CS3M CS4M CPFC2 CPFC3 CPFC4 DVBIAS THV MHV SHV GBPWM OCSW MPS SWDS FW RTH MM PDA MCS VREF BL DATA FWS RTH H3 DATA0 MMPWM AEG0 AEG1 AES PCG MCG MCS PROCON VREF BL DATA RXD A0 A2 D0 D7 RESET CS2 IC11 IC18 IC12 D TXD IC19 ULN2004 ULN2004 16 15 14 10 13 16 15 14 13 11 IC...

Page 146: ...6 35 34 33 32 31 30 29 28 27 26 A13 P25 A12 P24 A11 P23 A10 P22 A9 P21 A8 P20 Vss A7 P17 A6 P16 A5 P15 A4 P14 A3 P13 A2 P12 A1 P11 A0 P10 Vcc D15 P37 D14 P36 D13 P35 D12 P34 D11 P33 D10 P32 D9 P31 D8 P30 D7 P47 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 A Vcc Vref P70 AN0 P71 AN1 P72 AN2 P73 AN3 P74 AN4 P75 AN5 P76 AN6 DA0 P77 AN7 DA1 A Vss P80 RFSH IRQ0 P81 CS3 RA...

Page 147: ...OCXB4 PB4 TP12 TOCXA4 PB3 TP11 TIOCA4 PB2 TP10 TIOCB4 PB1 TP9 TIOCB3 PB0 TP8 TIOCA3 PA7 TP7 TIOCB2 A20 PA6 TP6 TIOCA2 A21 PA5 TP5 TIOCB1 A22 PA4 TP4 TIOCA1 A23 PA3 TP3 TIOCB0 TCLKD PA2 TP2 TIOCA0 TCLKC PA1 TP1 TEND1 TCLKB PA0 TP0 TEND0 TCLKA A Vcc A Vss Vref P77 AN7 DA1 P76 AN6 DA0 P75 AN5 P74 AN4 P73 AN3 P72 AN2 P71 AN1 P70 AN0 H8 3042 H8 3041 H8 3040 64KByte 48KByte 32KByte HS 300H CPU ROM capac...

Page 148: ...ignal 17 P95 OP LATCH OUT Operation panel data latch signal 18 P40 KI0 IN Key input 0 signal 19 P41 KI1 IN Key input 1 signal 20 P42 KI2 IN Key input 2 signal 21 P43 KI3 IN Key input 3 signal 22 VSS VSS Power GND 23 P44 S0 IN Matrix input 0 signal 24 P45 S1 IN Matrix input 1 signal 25 P46 S2 IN Matrix input 2 signal 26 P47 MFD IN L Multi manual feed unit sensing signal Low when the unit is sensed ...

Page 149: ...rence voltage 78 P70 AES IN AE sensor signal Analog input signal 79 P71 TH IN Thermistor signal Analog input signal 80 P72 TCS IN Toner density sensor signal Analog input signal 81 P73 PROCON IN Process control signal Analog input signal 82 P74 DVC IN Developing unit color detection signal Analog input signal 83 P75 PD IN Original sensor signal Analog input signal 84 P76 BLDATA OUT Blank lamp data...

Page 150: ...B4 I O 7 PB5 I O 8 PB6 I O 9 PB7 I O 10 Vss 11 PC0 I O 12 PC1 I O 13 PC2 I O 14 PC3 I O 15 PC4 I O 16 PC5 I O Pin No Pin name I O 17 PC6 I O 18 PC7 I O 19 N C 20 PD0 I O 21 PD1 I O 22 PD2 I O 23 PD3 I O 24 PD4 I O 25 Vss 26 VDD 27 PD5 I O 28 PD6 I O 29 PD7 I O 30 D0 I O 31 D1 I O 32 D2 I O Pin No Pin name I O 33 N C 34 N C 35 D3 I O 36 D4 I O 37 D5 I O 38 D6 I O 39 D7 I O 40 CLR I 41 ODEN I 42 Vss...

Page 151: ...r control signal 6 PB4 TRC OUT H Transport clutch control signal 7 PB5 RRC OUT H Resist roller clutch control signal 8 PB6 PR OUT H Power relay control signal 9 PB7 DVBIAS OUT H Developing bias control signal 10 VSS VSS Power GND 11 PC0 THV MHV OUT H Transfer main charger control signal DATA CLR A2 A1 A0 WR RD CS ODEN CONTROL DATA SELECT OR LATCH LATCH LATCH LATCH LATCH PA PB PC PD PE 8 4 8 8 8 4 ...

Page 152: ...IN Data signal 32 D2 D2 IN Data signal 33 NC 34 NC 35 D3 D3 IN Data signal 36 D4 D4 IN Data signal 37 D5 D5 IN Data signal 38 D6 D6 IN Data signal 39 D7 D7 IN Data signal 40 CLR RESET IN L Reset at LOW 0V 41 ODEN RESET IN L Reset at LOW 0V 42 VSS VSS Power GND 43 WR WR IN L Data write signal 44 RD RD IN L Data read signal 45 CS CS1 IN L Chip select signal 46 A0 A0 IN Address signal 47 A1 A1 IN Add...

Page 153: ... When the power voltage reaches the specified level the operation of each circuit is started Before the paper voltage falls below the speci fied level the operation of each circuit is stopped to prevent against malfunctions D0 4 Y CPU 5 D1 3 D2 2 D3 1 D4 15 D5 14 D6 13 D7 12 A SEL A 11 B SEL B 10 C SEL C 9 IC15 G 7 74LS151 SEL A I O 5V 1K 4 7K 10K 2 2K 22K 24K 5V HC04 S0 DTA123YS PE1 EE SX1042 24K...

Page 154: ...t 9 pin becomes lower than the voltage at 8 pin the heat roller surface temperature about 240V the IC20 14 pin is driven to LOW pulling down the PR signal to the GND level turning off the AC power of the heater lamp 2 Since the OP latch signal is fixed to HIGH or LOW the collector of Q7 is open The voltage at IC20 10 pin is higher than the voltage at IC20 11 pin reference voltage and IC20 13 pin i...

Page 155: ...iring 7 Driver circuit Solenoid electromagnetic clutch 1 General The control signals of each load outputted from the CPU and I O cannot drive the load directly The output therefore is delivered to the load through the driver IC 2 Operation The drive circuit forms a Darlington circuit with two transistors to obtain a large drive current load current from a small input current I O output current Whe...

Page 156: ...e original density 10 Toner supply motor drive circuit IC104 is the motor control IC which drives the toner supply motor with the pulse signals TMa TMb outputted from the I O chip 11 Reset IC IC13 1 General The M51953 BL is the semiconductor IC most suitable to detect the power voltage and reset the logic circuit of every type including the CPU It is provided with the built in delay circuit Delay ...

Page 157: ...atrix circuit Key detection With the signal detected by Q1 Q7 and KI0 KI3 signal matrix at LOW GND and Q2 Q7 at HIGH open the level of KI 0 KI3 is checked to judge whether key matrix 1 2 and 3 are HIGH or LOW judging on off For Q2 Q7 switching is made every 2msec to judge each of them R1 R2 1 25V Power 5µA reference GND Delay capacity Output t ta ta H L Output not constant ta 30m sec t 4 25V 0 65V...

Page 158: ...o reduce the power consumption To reset from this energy save mode press an button on the opera tion PWB OPTION SORTER DC PWB GND 5V2 AC PWB PR HOUND AC CIRCUIT AC IN AC PWB N F ILSW LI NI LO NO L1 N1 OEG OMH SS 105LM AC PWB PT1 VH 24V Vcl 5V1 DC PWB HV VFM MirM LM CFM SFM M A I N P W B TM 5V1 MOTOR MM DSW HOUND B ONLY ADF CONTROL ADF DCPS 24V GND 5V JQ1 24V AJQ1342 24V JAPAN ONLY AC PWB DHSW SUB ...

Page 159: ...D2 IC6 IC 1 CPU H8 3292 D TXD D RES D DTR IC9 DO D7 PAM OUT WH DATA LUTCH CLUTCH STEPPER DRIVER 2 PAM2 B PAM2 B PAM2 A PAM2 A PAM2 STEPPER PAM1 STEPPER 2 PAM1 B PAM1 B PAM1 A PAM1 A IC2 STEPPER DRIVER DDM_PWM D RXD D DSR DPED2 PAPER SIZE AB ONLY DPPD1 DPOD IC5 A 0 A 1 5 D O D 7 R D DDM_DIR Q1 DDM_DIR DDM_PWM IC8 DDM1 DDM2 DDM 1 DC MOTER DRIVER Q4 3 ROM MAIN DPTD 2 ADU SENCER PWB PWB 12 17 ...

Page 160: ...s 3 Internal block diagram FIg 1 1 shows the internal block diagram of the LSI Fig 1 1 Internal block diagram P10 A0 P11 A1 P12 A2 P13 A3 P14 A4 P15 A5 P16 A6 P17 A7 P20 A8 P21 A9 P22 A10 P23 A11 P24 A12 P25 A13 P26 A14 P27 A15 P40 IRQ2 ADTRG P41 IRQ1 P42 IRQ0 P43 RD P44 WR P45 AS P46 φ P47 WAIT P30 D0 P31 D1 P32 D2 P33 D3 P34 D4 P35 D5 P36 D6 P37 D7 Data bus Lower ROM RAM Watch dog timer 16 bit f...

Page 161: ...it sensor Pin No Used Port Sig Name I O Active Note 20 P7 6 DTR I Copier UART signal 21 P7 7 NC 22 AVCC A D power GND 23 P6 0 SPM ONT O L Stepping motor output signal 24 P6 1 NC 25 P6 2 DPTD I DDM rotary encoder signal 26 P6 3 NC 27 P6 4 DDM_PWM O H DDM drive pulse signal 28 P6 5 DDM_DIR O H L DDM direction select signal 29 P6 6 NC 30 P6 7 SIM I Not Used 31 VCC Power VD 32 A15 Address signal 33 A1...

Page 162: ...source is driven by VB A Stepping motor phase A coil drive circuit B Stepping motor phase B coil drive circuit A Stepping motor phase A coil drive circuit B Stepping motor phase B coil drive circuit 4 ADU motor DDM drive circuit The CPU supplies signals of two systems which are process by the hardware to drive DDM Drive and non drive speed control is performed with DDM_PWM and normal reverse rotat...

Page 163: ... 2 7KJ R22 10KJ R31 10KJ R30 2 7KJ D16 1SS133 Q4 2SC1740S Q2 2SC1740S 6 2KJ 1 2Wx2 R6 1 5 8 IC8 SLA4391 R23 2KJ R26 2KJ R24 2KJ R3 8 2KJ 1 2W R25 2KJ R5 3 10 2 4 9 11 VCC VCC SIG1 SIG2 SIG3 OUT1 OUT2 OUT3 OUT4 VH F1 D20 RK14 D19 RK14 D18 RK14 C29 10000pF CNB 17 CNB 15 D17 RK14 125V 1 6A 250V T1 6A R14 10KJ R2 0 22J 1W 12 R4 8 2KJ 1 2W VD C27 22000pF R13 10KJ C8 10uF 35V C26 10000pF 6 7 SIG4 VDD VD...

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