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Epson Stylus Photo 950, Service Manual

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EPSON Stylus PHOTO 950

Revision A

OPERATING PRINCIPLES

Electrical Circuit Operating Principles

43

2.3  Electrical Circuit Operating Principles

The electric circuit of the Stylus PHOTO 950 consists of the following boards.

†

Main board

: C456 MAIN

†

Power supply board : C456 PSB/PSE

†

Panel board

: C456 PNL

This section provides operating principles of C456 Main Board, C456 PSB/ PSE and 
C456 Panel Board. Refer to Figure 2-26 for the major connection of the each boards 
and their roles.

Figure 2-26.   Electric Circuit

2.3.1  Power Supply Circuit Operating Principles

The power supply boards (C456 PSB/PSE Board) of Stylus PHOTO 950 use a RCC 
(Ringing Chalk Converter) circuit, which gen42VDC for drive line and +5VDC for 
logic line to drive the printer.

2.3.1.1  C456 PSB/PSE Board

The application of the output voltage is described below.

NOTE:

The +5VDC line applies only to the parts and locations in the above 
table. Almost all logic chips on the C456 main circuit board (CPU, ASIC, 
ROM and DRAM) are driven by the 3.3V line. Because of this, the 
+5VDC voltage that is generated by the C456PSB/PSE power supply 
circuit board do not drive these components. Each chip that is driven by 
the 3.3V line are driven by the 3.3V voltage that is stepped down by the 
3.3V regulator on the main circuit board.

AC voltage input from AC inlet first goes through filter circuit that removes high 
frequency components and is then converted to DC voltage via the rectifier circuit and 
the smoothing circuit. DC voltage is then lead to the switching circuit and FET Q1 
preforms the switching operation. By the switching operation of the primary circuit, 
+42VDC is generated and stabilized at the secondary circuit. This +42VDC generated 
by the secondary circuit is converted to +5VDC by the chopping regulator IC of the 
secondary circuit.

C456 PNL Board

C456 MAIN Board

3.3V regulator

C456 PSB/PSE

Board

Power Off

+5VDC

+42VDC

Printer Mechanism

CR Motor

PF Motor

Pump Motor

Head Drive Circuit

Sensors

Table 2-7.  Application of the DC Voltages

Voltage

Application

+42 +/- 2VDC
Rated output current 0.5A
Max. 1.6A

• CR motor
• Pump  motor
• PF motor
• Printhead drive voltage
• Printhead common voltage

+5 +/- 0.2VDC
Rated output current 0.5A
Max. 0.7A

• Logic sensor circuit
• Panel LEDs
• Nozzle select circuit (in printhead)
• I/F control circuit

Summary of Contents for Stylus Photo 950

Page 1: ...EPSONStylusPHOTO950 Color Inkjet Printer SEIJ01 015 SERVICE MANUAL ...

Page 2: ...ce All effort have been made to ensure the accuracy of the contents of this manual However should any errors be detected SEIKO EPSON would greatly appreciate being informed of them The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof EPSON is a registered trademark of SEIKO EPSON CORPORATION General Notice Other p...

Page 3: ...E MUST BE CONNECTED USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS 4 WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES WARNING 1 REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN 2 MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE LISTED...

Page 4: ...ignments Electrical circuit boards schematics Symbols Used in this Manual Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action Be aware of all symbols when they are used and always read NOTE CAUTION or WARNING messages Indicates an operating or maintenance procedure practic...

Page 5: ...Revision Status Revision Issued Date Description A April 5 2002 First Release ...

Page 6: ...1 3 9 Errors 23 1 4 Physical specification 24 Chapter 2 OPERATING PRINCIPLES 2 1 Overview 26 2 2 Printer Mechanism 26 2 2 1 Printhead 27 2 2 2 Carriage Mechanism 28 2 2 3 Paper Feeding Mechanism 30 2 2 4 Paper Loading Mechanism ASF Unit 34 2 3 Electrical Circuit Operating Principles 43 2 3 1 Power Supply Circuit Operating Principles 43 2 3 2 C456 Main Board 46 Chapter 3 TROUBLESHOOTING 3 1 Overvie...

Page 7: ...5 2 3 CR motor drive dispersion measurement sequence 138 5 2 4 Ink Charge 139 5 2 5 Head Angular Adjustment 140 5 2 6 Bi D Adjustment 144 5 2 7 USB ID Readout Checking 147 5 2 8 EEPROM Initialization 149 5 2 9 Platen Gap Adjustment Mechanism Adjustment 151 5 2 10 Head Cleaning Operation 154 5 2 11 Protection Counter Clear and Check 155 5 2 12 First Dot Position Adjustment 157 Chapter 6 MAINTENANCE...

Page 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...

Page 9: ...E 1284 level 1 device USB I F Small and Compact Used for Windows or Macintosh Multi size supported ASF Provided as standard with an ASF that can handle paper sizes up to A4 Can print on thick paper using front paper feeding Prints without curling at corners of A4 pages Roll paper is available CSIC compatible independent color ink cartridges Status information such as ink life is recorded by ink ca...

Page 10: ...l Ink Cartridges CD ROM Printer Driver Utility Bundled Software Roll Paper Holder Basket for Roll Paper Front loading paper guide Printing Kit for CD R Cutter Unit OPTIONS Ink cartridge Black T0331 Cyan T0332 Light cyan T0333 Magenta T0334 Light magenta T0335 Yellow T0336 Various special paper ...

Page 11: ... Bi directional shortest direction printing uni directional printing PRINT SPEED PRINTABLE COLUMNS Character mode Print quality Fine Character pitch 10 CPI Pica Printable columns 80 LQ speed 240 CPS NOTE Do not mention this in the user s manual NOTE This value is the speed of normal dot printing Raster graphics mode NOTE Do not mention this in the user s manual Table 1 1 Printing Speed and Printin...

Page 12: ...ote command 1 2 4 Paper feeding FEEDING METHOD Friction feed with ASF LINE PITCH Programmable in units of 4 23 mm 1 6 inch or 0 0706 mm 1 360 inch PAPER INSERTION Friction feed FEED SPEED 110mm sec 13 527mm feed 304 8mm sec 12 inch sec Fast continuous feed Table 1 2 Paper Specifications for Paper Feeder ASF Cut Sheet Size A6 to A4 Portrait Friction feed Paper types Normal paper 0 08 to 0 11 mm thi...

Page 13: ... 216mm x 356mm Executive 184 2mm x 266 7mm 2L 127mm x 177 8mm 5 x 7inch L 88 9mm x 127mm 3 5 x 5inch Quality Plain paper Bond paper Thickness 0 08mm to 0 11mm 0 003 to 0 004inch Weight 64g m2 to 90g m2 17lb to 24lb 55kg to 78kg ENVELOPE Size 10 241 3mm x 104 8mm DL 220mm x 110mm C6 162mm x 114mm Quality Bond paper PPC Air mail Weight 45g m2 to 75g m2 12lb to 20lb Flap shape 10 DL C6 Flap at length...

Page 14: ...ing a command otherwise it remains 14mm From lower end 3 mm to 14 mm area may be printed in bad condition NOTE 2 There can be set all 0mm using a special command Table 1 3 Printing area for Stylus PHOTO 950 Paper size PW paper width PL paper length LM Left margin RM Right margin TM Top margin BM Bottom margin US Legal 216mm 356mm 3mm 2 3mm 2 3mm 2 14mm 3mm 1 2 US Letter 216mm 279mm A4 210mm 297mm ...

Page 15: ... Light Magenta Print capacity 360dpi Black ink 570 pages A4 ISO TEC10561 Letter Pattern at 360dpi Color ink 440 pages A4 360 dpi 5 duty each color Ink life 2 years from production date Storage temperature 20 C to 40 C Storage within a month at 40 C 30 C to 40 C Packing storage within a month at 40 C 30 C to 60 C Transit within 120 hours at 60 C and within a month at 40 C Dimension 12 7mm W x 71 2m...

Page 16: ...trical specification Rated voltage AC 220 to 240V Input voltage range AC 198 to 264V Rated frequency range 50 to 60Hz Input frequency range 9 5 to 60 5Hz Rated current 0 15A Max 0 3A Power consumption Approx 12W ISO10561 Letter Pattern Approx 3W in standby mode Energy Star compliant Dielectric strength AC1500V rms 1 minute between AC line and chassis ...

Page 17: ...andards EN 60950 VDE EMI EN 55022 CISPR Pub 22 class B AS NZS 3548 class B 1 2 14 Reliability Total print volume 25 000 pages Black 10 000 pages Color A4 Letter Printhead Life 3000 million dots nozzle 1 2 15 Environmental condition TEMPERATURE 10 to 35 C operating 20 to 60 C non operating NOTE 1 month at 40 C 120 hours at 60 C HUMIDITY 20 to 80 RH operating 5 to 85 RH non operating However the con...

Page 18: ...cartridges should still be installed to the printer at this time NOTE 3 If the printhead is not capped while the power is turned off you should turn the power on while the ink cartridges are still installed to the printer Once the printhead has been capped then turn the power back off NOTE 4 If the printer is left to stand at ambient temperatures of 4 C or less the ink inside the printhead and ins...

Page 19: ...t described in the User s manual Refer to 1 3 5 Special settings mode 1 page 20 Power switch Paper switch Ink switch Roll Paper switch Table 1 5 Normal Panel Functions Switch Function Paper Loads or Ejects the Paper Return from Error Roll Paper No Cutter Tear Off feed and return Load or Eject Back Out feed Roll paper 2 Use Cutter TearOff 1 Load or Eject Back Out feed Roll paper 2 Ink Start the Ink...

Page 20: ...cial settings mode Switch Functions Paper Initialize EEPROM Roll Paper Pushing for 10 seconds Reset the ink overflow counter in EEPROM The operation procedure Turn the printer on with the Roll Paper SW pressed Paper and Ink indicators light for one second Response Paper indicator and ink indicator starts blinking blink 2 Release the Roll Paper SW Press the paper SW 2 Special setting mode is finish...

Page 21: ...ator Priority Power Paper Ink Power ON Condition On 16 Data processing Blink 15 Ink sequence Blink 14 Ink cartridge change mode Blink 13 Ink level low all colors Blink 12 Paper out On 11 Ink end all colors On 10 No Ink Cartridge all colors On 9 Double feed error 1 On 8 Paper jam condition Blink 7 Paper thickness error On 6 Cutter jam condition Blink 5 Adjust lever error High speed Blink 4 Cutter p...

Page 22: ... following actions are performed Clear print buffer Set default values Operator initialization This printer is initialized when turning the printer power on again within 10 seconds from last power off or printer recognized the INIT signal negative pulse of parallel interface When printer is initialized the following actions are performed Cap the printhead Clear input data buffer Clear print buffer...

Page 23: ... and keeps printing When the printer has completely run out of ink in any cartridge it indicates Ink out error Paper out When printer fails to load a sheet it goes Paper out error Paper jam When printer fails to eject a sheet it goes Paper jam error Paper obstruction A paper obstruction is considered and made error at the time of power supply on when the excretion of the form isn t made of the FF ...

Page 24: ...ops printing Double feed error When pieces of paper are piled up on ASF in double side printing mode or when the printer detects paper deviation it indicates Double feed error And it stops printing Cutter position error It is made error when the cutter doesn t return to the Home position after the cutter action or after Mechanical initializing Cutter jam error When the printer can t cut paper in e...

Page 25: ...C H A P T E R 2 OPERATINGPRINCIPLES ...

Page 26: ...s used to drive the carriage It makes almost no noise when the carriage is being driven However a linear scale is provided so that the current drive status can be ascertained PF motor DC motor This is used as the source of power to drive the paper feed rollers during constant length feed and paper eject operations A loop scale is provided on the surface of the high precision gear so that the paper...

Page 27: ... Electric Element Certain amount of voltage expands and contracts PTZ The drive wave generated on MAIN board drives PZT and PZT pushes the top cavity which has ink stored to discharge the ink from each nozzle on the nozzle plate Ink Cavity The ink absorbed from the ink cartridge goes through the filter and then is stored temporarily in this tank called cavity until PZT is driven Nozzle Plate The b...

Page 28: ... via the DC motor and a linear encoder to control the carriage speed and position in order to provide the same stable printing quality as the EPSON Stylus PHOTO 890 At the same time the CR motor is also used to generate the basic signal PTS signal that is used to regulate the ink ejection timing See CR Motor Driver Circuit on page 50 for details on the CR motor control circuit Figure 2 3 Carriage ...

Page 29: ...sm adjustment levers that are installed to the left and right ends of the carriage guide shaft adjust the degree of parallelism between the carriage guide shaft and the platen NOTE 1 Full release position The printer can detect the position of the adjust lever by means of the release sensor and the PG sensor 2 2 2 3 Carriage Home Position Detection The method used to detect the carriage home posit...

Page 30: ...PF roller shaft and controls the paper feeding amount See PF Motor Driver Circuit on page 50 of this chapter for details of the PF motor control circuit The PF motor drive force is transmitted to the PF roller and the paper eject roller along the route described below PF roller drive force transmission route PF motor pinion gear PF rotary encoder PF roller Paper eject roller drive force transmissi...

Page 31: ...el roller See Figure 2 5 Paper Feeding Mechanism 2 for details on the paper feed path and the names of the various parts Figure 2 5 Paper Feeding Mechanism 2 2 2 3 2 Manual Feed Mechanism This printer uses a new method of manually feeding paper from the front of the printer that enables the printer to print directly onto thicker types of paper and also onto CD R labels The feeding path for the pap...

Page 32: ...ly reinitialized and then the carriage is locked After the power turns on After the power is turned on timer cleaning is carried out automatically and the carriage is locked during this time Timer cleaning 1 The printer stores the date printing was last carried out in its EEPROM The Stylus PHOTO 950 printer driver always appends the current date reported by the computer s operating system to print...

Page 33: ...chanism that allows printing of CD R labels without leaving marks that look like a sewing machine seam on the surface When the adjust lever is move to the CD R printing position the star wheel roller mounting plate is lifted up so that the star wheel roller that is mounted on this plate is also lifted up Figure 2 8 Star wheel roller release mechanism Star Wheel Roller Mounting Plate ...

Page 34: ...to the hopper 2 Another purpose of the ASF support guide is that when the paper back lever snaps back into place during paper feeding the paper back lever also brings the key shaped ASF support guide back to prevent multiple sheets of paper from being fed at once thus improving the reliability of paper feeding CLUTCH MECHANISM The Clutch mechanism is located at the rear of the printer inside the l...

Page 35: ... fed the second sheet is returned by the paper back lever Standby condition 1 Print data is not sent to the printer for 3 seconds 2 The carriage unit moves to the left side of the printer and contacts the change lever and the driving force from the PF motor causes the planetary unit to rotate counterclockwise so that it contacts the projection on the change lever and prevents the change lever from...

Page 36: ...d Clutch body Spur gear 12 Combination gears 18 2 32 8 Spur gear 22 4 LD roller C H E C K P O I N T The silence cam and the silence lever on the ASF right frame apply a large amount of torque from A to B in order to move the hopper back to the standby mode position Figure 2 14 Standby condition 3 During paper feeding the LD roller is only rotated by combination gear ratchet 33 4 but in standby mod...

Page 37: ...pper LD roller and paper return lever Figure 2 16 Silence Cam mechanism 1 Figure 2 17 Silence Cam mechanism 2 3 As you can see pictures hopper is in the stand by condition depending on coupling shaft limitation lever position and this continues keeping by the slowdown nail 4 On the other hands user can install paper s onto the hopper under the initial hopper status and the paper return lever preve...

Page 38: ... slow dawn nail locates at top of red row in Figure 2 18 At this time any clatter noise will not be occurred caused by the shape of silence cam 6 1 Hopper condition Hopper has already been in hopper state 6 2 Paper return lever condition Paper return lever is in laid to insert a first paper to the printer internal 6 3 LD roller has already been on the way of rotating to the forward direction There...

Page 39: ... Silence CAM The jumped out paper return lever is the same condition to Step 4 10 After the Step 9 operation completes once loaded paper will more be loaded and ejected by the friction between PF roller and PF support rollers without ASF operation Figure 2 21 Silence Cam mechanism 6 C H E C K P O I N T But the stand by position Step 8 says does not mean the initial hopper status which Step 1 shows...

Page 40: ...g a 1st paper silence cam will rotate to counter clockwise direction and will soon change its direction to clockwise direction to make the ASF return to its stand by condition shown No 1 After completing this reset operation user can install more enough papers from the front side of the current installed papers maximum 150 sheets of normal plain papers Because the hopper status is in the same cond...

Page 41: ...mechanism is given below The drive force for the pump mechanism is provided by a 4 phase 48 pole PM type stepping motor which is used as the pump motor The specifications for this pump motor are given below The Pump unit and Wiper mechanism drives according to the Pump motor rotational direction as shown in the following table NOTE 1 Pump operating direction CW refers to clockwise operation when l...

Page 42: ...nd by mode or when the printer is off This product has valveless cap system Air valve function used for the previous models pumps and ejects ink only inside the cap by absorbing ink with the valve open By opening the Air valve the negative pressure is decreased and only the ink inside the cap is ejected the ink is not absorbed from Ink cartridge or head cavity But valveless cap system this operati...

Page 43: ...ltage that is generated by the C456PSB PSE power supply circuit board do not drive these components Each chip that is driven by the 3 3V line are driven by the 3 3V voltage that is stepped down by the 3 3V regulator on the main circuit board AC voltage input from AC inlet first goes through filter circuit that removes high frequency components and is then converted to DC voltage via the rectifier ...

Page 44: ... the trans T1 does not flow to the secondary side since the diode D51 on the secondary side is installed in the opposite direction 5 When the energy which is charged in the trans is reaching the saturated state the voltage which makes Q1 on becomes weak gradually At the point that this voltage drops at the certain voltage C13 absorbs the current in the opposite direction and Q1 is quickly shut off...

Page 45: ...VDC this circuit shuts down the 42V line forcefully 5V line control circuit The output current is monitored by the 5VDC generation switching control IC IC51 which also monitors the output voltage This information is input to the internal comparator and stabilizes 5V line 2 3 1 3 PS Control Function The power supply circuit is equipped with a secondary power supply so that even if the power is turn...

Page 46: ...The 3 3V regulator IC7 on the C456 Main produces 3 3V by pressuring down the 5 5VDC also generated on this board to drive several chips See the table below that separately shows the chips driven by the 5V and 3V No timer IC used In contrast to previous models this printer does not have a timer IC on the main circuit board As a result of this cleaning operations when the power is turned on and time...

Page 47: ...roduced by the common driver See Figure 2 29 for the parenthood driver circuit block diagram Figure 2 29 Parenthood Driver Circuit Table 2 9 Main Elements of the C456 Main IC Location Function CPU ASIC 2in1 E01A28CA IC6 208 pin QFP package Operating frequency 48 0MHz 24 0MHz Power supply voltage 3 3V Sending serial data to the printhead Setting pump motor current values Measuring head temperature ...

Page 48: ... through the seven signal lines HS01 to HS07 Data transmission from the CPU IC6 to the nozzle selector synchronizes with the LAT signal and SCK clock signal Referring to the transferred data nozzles to be activated are selected and the Puts of the selected nozzles are driven by the drive waveform output from the head common driver 2 3 2 2 Reset EEPROM Circuit RESET CIRCUIT Reset circuits consist o...

Page 49: ... CONTROL CIRCUIT Since EEPROM is nonvolatile memory it keeps written information if the printer power is turned off When the printer is turned ON CPU IC6 reads data from EEPROM IC13 via the RAM and when the power is turned OFF it stores data to EEPROM via the RAM EEPROM is connected to CPU with 4 lines and each line has the following function CE Chip selection signal SK Data synchronism clock puls...

Page 50: ... 5 minutes CPU set the motor drive current to 0 via port 41 pin and the motor drive is turned off to save the power consumption PF MOTOR DRIVER CIRCUIT A diagram of the IC10 A3958 driver for the PF motor is shown below Figure 2 33 PF Motor Driver Circuit Block Diagram The motor driver IC IC10 on the MAIN board drives PF motor This product uses DC motor and performs constant current PWM drive CPU I...

Page 51: ...nsor Ink cartridge sensor Head thermistor PF rotary encoder CR linear encoder PW sensor The block diagram for the sensor circuit is shown below Figure 2 35 Sensor Circuit Block Diagram IC6 CPU ASIC 2 in 1 E01A28CA IC11 LB1946 Motor driver IC 42V Pump A Pump motor Pump B Pump B Pump A IC6 CPU ASIC 2 in 1 C_P11 PE_PEDCU C_P21 EDACK0 C_P23 EDUCK2 C_P22 WORDREN C_P40 MODELAT C_P44 ENCB_CR ENCA_CR ENCB...

Page 52: ...alled or not Sensing is carried out by detecting whether the CSIC is connected or not If an ink cartridge is installed a Low signal is output to the ASIC If no ink cartridge is installed a High signal is output to the ASIC Head thermistor The thermistor is attached directly on the parenthood driver board It monitors the temperature around the parenthood and determines the proper head drive voltage...

Page 53: ...C H A P T E R 3 TROUBLESHOOTING ...

Page 54: ...ith your other hand as the chance of receiving an electric shock at such times is extremely high C H E C K P O I N T Disassembly and reassembly of parts is often required when identifying the causes of problems The parts should be disassembled and re assembled correctly while referring to Chapter 4 Disassembly and Assembly so that the operation and status of each check item can be correctly verifi...

Page 55: ...set use the Dump function of the adjustment software to rewrite the setting to the default 00H The relationship between the interface protocol setting status and the setting values is given below For details refer to Chapter 5 NOTE The Stylus PHOTO 950 has a default setting function but unlike previous models interface protocol selection is not possible Even if the default value 00H is changed to ...

Page 56: ...possibility that the various adjustment values may be distorted Because of this all parameter electrical adjustments should be carried out afresh Refer to Chapter 5 for details 2 Use the adjustment program to check the 09H address IEEE 1284 4 for USB for the EEPROM The relationship between the IEEE 1284 4 for Parallel setting status and the setting values is given below 00H Auto Status cannot be s...

Page 57: ... the ASF are disengaged 3 There is a piece of paper lodged in between a paper load sub roller and the PF roller 4 The bushing at the left of the PF roller is dislodged from the mechanism and is not rotating smoothly 5 The powder coating on the PF roller shaft is extremely dirty or has sections that are missing powder 6 The EJ roller holder is not secured to the paper eject roller shaft and is loos...

Page 58: ...ROM is corrupted Table 3 5 Relationship between Error Indication and Presumption Cause No Error status Probable cause 5 Ink Low Indication Refer to Section 3 1 4 3 Ink end detection is carried out for both black white and color printing When the amount of ink remaining is becoming low the indicator illuminates When a set amount of ink is then used up from that point an ink end error is displayed a...

Page 59: ...ly ejected and then a paper out error is indicated straight away to prompt the customer to reset the paper Furthermore it is also assumed that such double feed errors will result in the paper running out before the last page or the last few pages are printed and so double feed and paper out errors are handled in the same way This is considered to be a refinement of conventional paper jam detection...

Page 60: ...ot correctly attached insert the hooks correctly into the holes in the ASF Non adhesive Area CL Sheet Adhesive Area This side down Staplers Cloth moistened with alcohol Use a post card for the base sheet Hooks 3 Is there any paper lodged in between a paper load sub roller and the PF roller Clean away any paper or other foreign particles that may be caught in the rollers 4 Is the PF roller bushing ...

Page 61: ...ook Point Correct Status Incorrect Status 9 10 11 Does the PE lever not work correctly Move the PE lever at the rear of the printer manually and check if it returns normally as soon as it is released If it does not return the cause might be one of the following three reasons 1 The PE lever has come away from the base 2 Scraps of paper have collected around the PE lever so that the PE lever cannot ...

Page 62: ...scale correct Look through the cut away part of the mechanism at the home position side of the carriage and check if the encoder photo coupler is blocked with paper or dust If it is blocked with paper or dust use a cotton swab or similar to clean away the blockage In the same way as above check the condition of the linear scale Ideally the linear scale should be in the middle of the encoder but it...

Page 63: ...two paper return levers back flaps inside the ASF unit cannot be operated replace the paper back lever 18 The spring that applies tension to the paper return lever inside the ASF has come off from its normal position and so no tension is being applied The photograph below shows the normal setting position for the paper return lever tension spring Table 3 6 Countermeasures when a paper out error oc...

Page 64: ... input to the EEPROM on the main board so that a head hot error does not occur No other adjustments are required when carrying out checking 21 If the customer uses paper which is longer than the set paper length no paper out indication will appear even though the printer sends the regular number of pulses so is this causing a paper jam error to be recognized If the problem cannot be identified eve...

Page 65: ...arry out the ink cartridge replacement operation and check if an ink out or ink cartridge out error occurs no matter which ink cartridge is used Because the carriage moves to the position of the marking on the carriage it is possible that an ink cartridge is not being detected If a particular cartridge is not being detected lift this cartridge up to the replacement position and then push it in fir...

Page 66: ...s mentioned here are normal Table 3 7 This section describes the procedures for solving the problem when an ink out cartridge out error is displayed even though a brand new ink cartridge has been installed Step Check Point Remedy Hooks Hooks CR Frame Sus Plate for pushing CSICs from the bottom side 4 Has the IC chip EEPROM that is mounted to the CSIC become detached or is it becoming detached If t...

Page 67: ... if they are almost disconnected from the connector there is a high possibility that direct damage to the head may occur and in the worst case the head driving transistors Q12 and Q13 on the main board and the printhead itself may become damaged Because of this handle the FFC very carefully while working When CN10 is disconnected and then reconnected and the power is turned back on the fatal error...

Page 68: ... 9 Have the cartridges been refilled Because this printer uses a new type of cartridge traces of whether the cartridges have been refilled can basically be checked The reasons are as follows 1 In contrast to previous CSICs there is no ventilation hole at the top of the cartridge There is no refill point like previously 2 If a syringe is inserted through the film to charge the inside of the cartrid...

Page 69: ...Step2 The customer removes the cartridge which is currently showing an Ink Low or Ink Out status If a cartridge showing an Ink Out status is removed at this time the Ink Out indication does not change If a cartridge showing an Ink Low status is removed the Ink Out status actually Cartridge Out is momentarily displayed Step3 A new ink cartridge is installed At this time the following differences oc...

Page 70: ...is activated instead The EEPROM initialization can be used to recover from conditions such as the printer does not accept any data from the PC The EEPROM initialization mode initializes the following items Accumulated power off time The value for the Timer IC is reset Timer CL This is also called the firing standby counter Its purpose is to prevent current from being supplied to the head for a set...

Page 71: ...easures when a fatal error occurs Step Check Point Remedy 1 Is the linear scale not moving in between the photo sensor photo coupler parts on the underside of the carriage or is the area around the photo sensor clear of problems NOTE These countermeasures include ways to solve paper loading problems when there is dirt or other foreign materials on the linear scale but paper jams may also occur dep...

Page 72: ...a connector that transmits the feedback signal from the PF encoder to the main board Accordingly if this connector is disconnected the result is the same as if there is a malfunction of the PF encoder Table 3 10 Countermeasures when a fatal error occurs Step Check Point Remedy Junction Board CN1 Rotary Scale Photo Coupler Check Point 1 Check Point 2 5 Is CN9 FFC on the main board disconnected or a...

Page 73: ...asurement locations See the figure below 9 Is there a malfunction of the motor driver IC IC9 on the main board If the pins of IC9 are blackened the main board and the motor must both be replaced at the same time Furthermore in order to determine which motor check the internal coil resistance of the motors as described in step 7 above and replace whichever motor does not give a normal resistance va...

Page 74: ...hat the encoder is mounted on and check operation NOTE Once the carriage or the carriage guide shaft have been removed several adjustments must be carried out so refer to the Adjustment and Disassembly sections for details on carrying out these adjustments correctly Table 3 10 Countermeasures when a fatal error occurs Step Check Point Remedy Table 3 11 Countermeasures when an adjust lever error oc...

Page 75: ...al position 4 Is there a release sensor problem Use a multimeter to check if there is a problem with the sensor Operate the actuator manually and check that the voltage at pin 1 of connector CN13 on the main circuit board changes as follows Paper guide open LOW Paper guide closed HIGH Table 3 11 Countermeasures when an adjust lever error occurs Step Check Point Remedy 2 pin GND 1 pin Release Table...

Page 76: ...the same operation occurs as if there is a problem with the PG sensor itself Table 3 12 Countermeasures when a paper thickness error occurs Step Check Point Remedy 2 pin GND 1 pin PE 6 Is there a sensor or actuator problem Try moving the actuator manually in the same was as if it were being pushed by the adjust lever When the actuator is released check that it returns automatically to its original...

Page 77: ...on the main board loose or completely disconnected Check that CN3 is not loose or disconnected If it is loose or disconnected reconnect it securely to the main board NOTE CN3 on the C456PSB PSE board is soldered on so that it is not likely to come loose or be disconnected However the soldered joint may become broken if the printer is dropped or subjected to unexpectedly strong shocks and this may ...

Page 78: ...eck if there are any foreign particles on the surface of the power supply board Table 3 13 Isolating the Faulty Part on the Power Supply Board Step Check Point Remedy C51 C11 6 Is a normal voltage being output from the power supply board Measurement points are shown below 42 V measurement Positive tester probe Pin 1 pin 2 Negative tester probe Either pin 3 pin 6 or pin 7 5 V measurement Positive t...

Page 79: ...n Paper is not being fed Refer to Section 3 1 6 2 3 Unexpected Ink Out Cartridge Out Error Dot dropout appears to be happening a lot and then suddenly an Ink Out indication appears However the ink cartridges are almost new or are still quite full Refer to Section 3 1 6 3 4 PF Motor Driver Abnormal 2 Noise occurs around the PF motor each time the PF motor operates Refer to Section 3 1 6 4 5 Carriag...

Page 80: ...rts or is there a problem around the photo sensor If the rotary scale is not inside the photo sensor a fatal error will occur Check if the condition is as shown in the illustration below or not If the rotary scale is not inside the photo sensor re adjust the rotary scale so that it is inside the photo sensor Furthermore check if the connector that transmits the signal from the rotary encoder to th...

Page 81: ...orrectly visible from the cut away part of the mechanism Table 3 16 ASF Driver Abnormal 1 Step Check Point Remedy Correct Harness Condition Incorrect Harness Condition Left Side of the Printer Mechanism Protrusion 1 Front View Bottom View Protrusion 2 Right Side of the Printer Mechanism Table 3 17 Unexpected Ink Out Error 1 During Print Operation Explanation step Unexpected Ink Out Error 1 During ...

Page 82: ...Stylus COLOR 900 980 When an abnormal temperature is detected an Ink Out condition is immediately set and the ink consumption counters for the currently installed ink cartridges are set to 100 so that the only way to reset the problem is to install new ink cartridges The reasons for changing the sequence in this way are as follows 1 Actual market results show that problems related to heat hot erro...

Page 83: ...gear to check the operation Table 3 18 PF Motor Driver Abnormal 2 Step Check Point Remedy ASF Drive Gear Combination Gear 18 4 32 8 Table 3 19 Carriage Operation Abnormal Step Check Point Remedy 1 Has PG adjustment been carried out correctly Service problem While referring to Chapter 5 Adjustment carry out PG adjustment if any parts or units which require PG adjustment to be done have been replace...

Page 84: ...trations below show connectors CN9 and CN10 which affect printing Be sure to disconnect the AC cable and then re seat it When re seating the cable press the FFCs by hand to see if they can be pushed in any further If they can then the FFC connections to CN9 and CN10 are probably loose even if they are not inserted at an angle If this is the case problems with printing will occur 2 Is the fuse F1 t...

Page 85: ... process until they are fully clean If they do not appear to be returning to normal proceed to step 2 Furthermore the dummy cleaning operation that was used in older models is not supported by this model so there is no problem with carrying out cleaning operations repeatedly 2 Can the cap unit operate normally Press the part shown below by hand and check that it moves and that the cap unit automat...

Page 86: ... cap unit After carrying out all checks carry out cleaning once more and check if the problem is solved 4 Use the adjustment program to carry out forced cleaning CL3 and check if printing returns to normal Check that the mis firing nozzle s gradually return to normal If they do appear to be returning to normal repeat the CL3 cleaning procedure using the adjustment program until the nozzles are all...

Page 87: ...olored stripes are easily visible after high speed printing 6 Let the printer stand for a day if time permits After leaving the printer for a day In worst case 3 to 4 days are required check if the missing printing appears to be returning to normal If it does appear to be returning to normal use the cleaning function on the panel and the CL3 cleaning function and initial ink charge flag reset func...

Page 88: ...n a certain raster Because it is possible that the printer has received a severe shock in the case of a specified raster check this with the customer If the carriage encoder receives a severe shock and momentarily stops reading it may cause a direct ink firing timing fault even if it does not result in a fatal error and this can cause character distortion for a particular raster If the printer has...

Page 89: ...ies a load inside the planetary gear is too strong and the planetary gear cannot lift up Cause 2 The friction of the shafts that pass through the planetary gear set is to strong and the planetary gear cannot lift up Cause 3 The ASF change lever is not installed correctly so that even when the carriage contacts the change lever it does not move and so the clutch remains engaged Table 3 23 ASF Abnor...

Page 90: ... the coil inside the motor to seize To prevent this from happening the Stylus PHOTO 950 carries out the following controls 1 If continuous printing is carried out for 150 pages and printing continues past this the carriage drive speed does not change but a 3 second waiting time is introduced after each pass is completed This always occurs when the carriage moves from left to right or from right to...

Page 91: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...

Page 92: ...e appendix Read precautions described in the next section before starting 4 1 1 Precautions See the precautions given under the handling WARNING and CAUTION in the following column when disassembling or assembling the product W A R N I N G Disconnect the power cable before disassembling or assembling the printer If you need to work on the printer with power applied strictly follow the instructions...

Page 93: ...leaking Therefore the ink cartridges should always be removed during transportation Use only recommended tools for disassembling assembling or adjusting the printer Apply lubricants and adhesives as specified See Chapter 6 for details Make the specified adjustments when you disassemble the printer See Chapter 5 for details Make sure the tip of the waste ink tube is located at correct position when...

Page 94: ...e sure you always use the correct type and number of screws for the assembling part Table 4 2 List of Screw Types Appearance Specifications Appearance Specifications Appearance Specifications 1 C B P 3x12 6 C B S 3x6 11 C P 3x6 2 C B S Tite R 3x6 7 C B P 3x6 12 C B P 2 5x5 3 C B S 3x8 8 C B P 3x8 4 C B P 3x10 9 C P 3x4 5 C B P 4x12 10 PF mount ...

Page 95: ...he CR Motor at the correct temperature Not too heated Checked Not necessary Paper Feeding Mechanism Is paper advanced smoothly No paper jamming No paper skew No multiple feeding No abnormal noise Checked Not necessary Is the PF Motor at correct temperature Checked Not necessary Is the paper path free of any obstructions Checked Not necessary Adjustment Specified Adjustment Are all the adjustment d...

Page 96: ...Page 123 Printhead Removal Page 108 Waste Ink Pad Removal Page 101 Main Board Assembly Removal Page 101 ASF Unit Removal Page 105 Power Supply Board Assembly Removal Page 104 Ink System Unit Removal Page 107 PE Sensor unit Removal Page 122 PF Motor Removal Page 120 Carriage Unit Removal Page 110 CR Guide Shaft Removal Page 110 Front Paper Guide Removal Page 117 EJ Roller Unit Removal Page 118 CR M...

Page 97: ...move the two screws 2 C B S Tite R 3x6 that are securing the Upper Housing Figure 4 3 Screws Securing the Upper Housing 2 4 Use the upper case removal tool to disengage the two hooks and then remove the upper housing 1 C B P 3x12 Printer Cover Upper Housing 1 C B P 3x12 2 C B S Tite R 3x6 Upper Stacker Assembly Upper 2 C B S Tite R 3x6 C A U T I O N Be careful not to break the two mounting hooks w...

Page 98: ... 3 C B S 3x8 and the two screws 4 C B P 3x10 that are securing the Rear Housing Figure 4 6 Screws Securing the Rear Housing 3 While pushing the left and right sides of the rear housing inward one by one remove the rear housing Figure 4 7 Rear Housing Removal C A U T I O N C A U T I O N C A U T I O N When connecting the FFC to the panel circuit board be sure to affix the double sided tape that is a...

Page 99: ...t C A U T I O N Be careful not to clamp the cables when installing the rear housing C A U T I O N C A U T I O N C A U T I O N Face the two clamps on the interface connector toward you before installing the rear housing so that they do not get caught between the rear housing and the printer mechanism Figure 4 8 Rear Housing Installation The four hooks at the left and right of the rear housing shoul...

Page 100: ...ard to remove it Figure 4 11 Hooks Securing the Roll Paper Support Holder C A U T I O N When installing the printer mechanism be careful not to clamp any of the cables in between the printer mechanism and the lower housing Left upper Side 5 C B P 4x12 6 C B S 3x8 Right upper Side Left front Side Right front Side C A U T I O N C A U T I O N C A U T I O N The two tabs on the lower housing should be ...

Page 101: ... 4 2 1 3 2 Remove the cables from the roll paper unit ASF unit and circuit board plate hooks and acetate tape at the rear left and right sides of the printer mechanism Figure 4 14 Releasing the Cables C H E C K P O I N T The waste ink pad marked 2 in Figure 4 13 is underneath the one marked 1 so waste ink pad 2 should be removed after 1 has been removed Waste ink pad 1 has a four layered structure...

Page 102: ... clamp feet to release the cables Figure 4 16 Releasing the Cables C A U T I O N C A U T I O N C A U T I O N When re installing the cable must be routed as shown in Figure 4 14 You should reattach acetate tape to point A on the right side of the printer mechanism when looking at it from the rear after re hooking the cable Furthermore the ferrite core should also be installed to the surface above i...

Page 103: ...t Figure 4 18 Screws Securing the Main Board C H E C K P O I N T CN3 and CN14 are provided with harness locking mechanisms so check that the locking mechanisms are unlocked before disconnecting the cables When reconnecting the cables make sure that each harness is inserted separately onto each pin Figure 4 17 Harness locking mechanisms CN14 CN3 1 2 3 C A U T I O N C A U T I O N C A U T I O N When ...

Page 104: ...1 Remove the Upper Housing Refer to Section 4 2 1 1 2 Remove the two screws 8 C B P 3x8 that are securing the panel board and then remove the plate Figure 4 20 Screws and Plate Securing Panel Board C H E C K P O I N T CN3 is provided with harness locking mechanism so check that the locking mechanism is unlocked before disconnecting the cable When reconnecting the cable make sure that each harness ...

Page 105: ... first forward and then upward to remove it Figure 4 22 Manual paper guide Removal 4 Remove the two screws 3 C B S 3x8 that are securing the ASF Unit Figure 4 23 Screws Securing the ASF Unit 5 Remove a screw 6 C B S 3x6 that is securing the LD Roller Cover and then slide the LD Roller Cover to the left Figure 4 24 LD Roller Cover Removal Left side 4 C B P 3x10 4 C B P 3x10 Roll paper units Right s...

Page 106: ...ok C A U T I O N C A U T I O N C A U T I O N After removing the ASF Unit two positioning dowels for use when installing the ASF Unit to the mechanism can be seen on each of the ASF Unit Frames When re installing the ASF Unit these four dowels should be positioned s that they fit into the notches in the Printer Mechanism in order to make installation easier When installing the ASF Unit the Change L...

Page 107: ...B S 3x6 that are securing the ink system unit cap unit and pump unit to the printer mechanism and then remove the ink system unit together with the bracket Figure 4 28 Ink System Unit Removal Ink System Unit Right side 6 C B S 3x6 6 C B S 3x6 C A U T I O N C A U T I O N C A U T I O N When installing the ink system unit the tabs on the bracket should be inserted into the printer mechanism Figure 4 ...

Page 108: ...0 Cable Head Holder Removal 5 Remove Torsion Spring 6 Remove a screw 7 C B P 3x6 that is securing the Head Fastener 7 Use tweezers or similar to disengage the hooks of the two overlapping plates that apply tension to the ink cartridges from the notches at the left and right of the carriage unit and then remove the plates one by one Figure 4 31 Two Plates Removal C A U T I O N Be careful not to bre...

Page 109: ...n addition it can only be inserted from the left side when it is being reinstalled Figure 4 32 Head Fastener Removal 9 To avoid the two projections which are pressing down on the Printhead from above slide the Printhead unit forward slightly and then lift the Printhead up Figure 4 33 Printhead Moving 10 Disconnect the two FFCs and then remove the Printhead Figure 4 34 Printhead Removal Head Fasten...

Page 110: ...djustments must be carried out in the order given Adjustment list 1 When the printhead has been removed not replaced 1 Platen Gap Adjustment 2 Head Angular Adjustment 3 Bi D Adjustment Adjustment list 2 When the printhead has been replaced 1 Platen Gap Adjustment 2 Head ID Input 3 Head Angular Adjustment 4 Bi D Adjustment A D J U S T M E N T R E Q U I R E D Adjustments must be carried out after th...

Page 111: ...en replacing or re installing the Printhead make sure that the CR Guide Plate is correctly installed first If this is not done the end of the Printhead may contact the surface of the Paper Guide which could cause damage to the Printhead during installation C A U T I O N When removing the Extension Spring handle the spring carefully and do not pull it more than necessary otherwise the spring may be...

Page 112: ...from the driven pulley C A U T I O N When the Carriage Unit has been completely removed and is being re installed make sure that you first connect the FFC to the connector on the Printhead Control Board at the Rear of the Carriage Unit Then install the Guide Shaft to the Carriage Unit and secure it to the Printer Mechanism If you try to connect the FFC after the CR and the CR Shaft have been insta...

Page 113: ...e to disengage it from the hook and remove it Figure 4 42 CR Guide Shaft Plate Removal 15 Disengage the hook on the bushing gear at the right side of the printer mechanism and then use tweezers or similar to push the bushing gear out from inside the printer mechanism and remove it Figure 4 43 Bushing Removal Bush Gear Hook 6 C B S 3x6 Left side Parallelism Adjustment Bushing Hooks CR Guide Shaft P...

Page 114: ... 44 before inserting it When installing the carriage guide shaft plates onto the carriage guide shafts that have been inserted at left and right they must be hooked onto the dowels on the printer mechanism U Type Washer CR Guide Shaft Plate C A U T I O N Be careful not to lose the oil pads that are attached to the base at the rear of the carriage unit when removing the carriage guide shafts Figure...

Page 115: ...uring process and parts delivery method used Accordingly the availability of the bushings as a set should be checked beforehand when quoting for ASP work on the Carriage Unit Figure 4 46 Sub Oil Pads and Securing Spring Sub Oil Pad Securing Spring C A U T I O N C A U T I O N C A U T I O N The Adjust lever bushing gear and idle spur gear 12 must be installed so that they are in the correct phase Ma...

Page 116: ...e 4 48 Releasing the Cables 4 Remove the four screws 6 C B S 3x6 that are securing the Star Wheel Roller Unit Figure 4 49 Screws Securing the Star Wheel Roller Unit 5 Push the left and right sides of the printer mechanism to widen it and then remove the star wheel roller from the right side while pivoting it on the left side Hook Star Wheel Roller Unit 6 C B S 3x6 1 2 3 4 C A U T I O N C A U T I O...

Page 117: ...to break the hooks of the front paper guide that are shown in Figure 4 50 and Figure 4 51 The previous procedure describes the method of removing the Front Paper Guide If the procedure is not carefully followed the power coating on the surface of the PF Roller may come off and this could have an adverse effect on the paper feed pitch to an extent that could be noticeable to the user Accordingly wh...

Page 118: ...upward Figure 4 53 Bushing Removal 4 Lift up the EJ Roller Unit to remove it EJ Roller Unit EJ Grounding Wire Bush Bush C A U T I O N C A U T I O N C A U T I O N When installing the EJ roller shaft the end with the carriage lock lever attached should be on the right side when the EJ roller shaft is installed to the printer mechanism The carriage lock lever should be installed as shown in Figure 4 ...

Page 119: ...l 3 Remove the two screws 7 C B P 3x6 that are securing the Lower Paper Guide Unit and then remove the Lower Paper Guide unit Figure 4 56 Screws Securing the Lower Paper Guide Unit Lower Paper Guide Unit Connector 7 C B P 3x6 C A U T I O N C A U T I O N C A U T I O N When installing the lower paper guide the grounding springs should be installed to the left and right ends as shown in Figure 4 57 F...

Page 120: ...al 8 Remove the PF Motor C A U T I O N C A U T I O N C A U T I O N When installing the PF motor the screws should be installed in the order shown in Figure 4 58 Extension Spring Timing Belt 9 C P 3x4 PF Motor Pinion Gear 10 PF mount 2 1 C A U T I O N When reinstalling the PF Motor be sure to use the Acetate Tape that was removed in step 6 to 7 to re secure the Harnesses If this is not done the Har...

Page 121: ...Remove the Board Plate Refer to Steps 1 to 3 in Section 4 2 2 1 2 Disconnect the connector CN7 black 4 pin from the Main Board Assembly 3 Disengage the pump motor harness from the two hooks 4 Remove the two screws 6 C B S 3x6 that are securing the Pump Motor Figure 4 61 Screws Securing the Pump Motor 5 Lower the pump motor pull out the pinion gear and then remove the pump motor C A U T I O N C A U...

Page 122: ...e 4 pin from the PF Encoder Sensor 3 Remove a screw 12 C B P 2 5x5 that is securing the PF Encoder Sensor 4 Move the PF rotary encoder out of the way so that the PF encoder sensor can be turned clockwise and then remove the PF encoder sensor Figure 4 63 PF Encoder Sensor Removal PE Sensor Unit Hooks C A U T I O N C A U T I O N C A U T I O N When re installing the PF Encoder Sensor check that the R...

Page 123: ...al 4 2 12 4 PG Sensor Release Sensor Removal 1 Remove the Printer Mechanism Refer to Section 4 2 1 3 2 Disconnect the respective connectors PG sensor blue 2 pin release sensor yellow 2 pin 3 Disengage the two hooks on each sensor and then remove the PG sensor and release sensor C A U T I O N Handle the PF rotary encoder very carefully during this procedure to avoid letting it get broken or damaged...

Page 124: ...per Guide and then remove the whole PF Roller Unit C A U T I O N If the Shaft is moved more than 5 cm to the left the powder coating on the PF Roller may get scraped against the Hooks at the rear of the Paper Guide and come off Because of this move the Shaft to the left little by little not all at once 1 2 Hook Rear Hook PF Roller Unit PF Grounding Spring C A U T I O N If you directly touch the su...

Page 125: ...4 68 ASF Unit Right Side Removal 2 7 Hold the Hopper Torsion Bar Holder and slide it to the left to release it and then remove it from the shaft 8 Disengage the two Hooks and then remove the Hopper Assembly and the Compression Spring At this time remove the Torsion Bar Hopper from the groove at the rear of the Hopper while removing the Hopper Assembly Figure 4 69 ASF Unit Right Side Removal 3 C A ...

Page 126: ...tment screws on the Spur Gear and the Silence Cam so that the PF Roller can be installed correctly Refer to Section 4 2 15 If the directionality of the Spur Gear is incorrect it should not be reinstalled to the Shaft When reinstalling check the shape carefully and make sure that it fits onto the LD Roller Shaft without needing to apply an excessive amount of force Hook C A U T I O N C A U T I O N ...

Page 127: ...ion Spring 0 5 C A U T I O N C A U T I O N C A U T I O N There is a U type Spring at the left end of the Shaft Set it so that the concave part is on the inside LD Roller side and the convex side is on the outside Frame Left Side At the stage just before inserting the LD Roller Shaft the following parts must be installed 1 Drive LD 2 Clutch 3 Extension Spring 0 5 1 Hang Extension Spring 0 5 to the ...

Page 128: ...et 21 Remove the screw 7 C B P 3x6 that is securing the Spur Gears 12 and then remove the Spur Gears 12 22 Remove Spur Gear 22 4 Figure 4 76 ASF Unit Left Side Removal 5 Combination Gear 18 2 32 8 ASF Right Frame 7 C B P 3x6 7 C B P 3x6 C A U T I O N C A U T I O N C A U T I O N When installing Spur Gear 12 can face in either direction but Spur Gear 22 4 can only face in one direction It should be ...

Page 129: ...r Left 26 Remove the Paper Back Lever The Paper Back Lever is only secured by means of the two tabs on the ASF Middle Holder Right C A U T I O N When removing the ASF Middle Holder Left be careful not to lose the Torsion Spring 5 6 which applies tension to the Paper Back Lever as it may fly out at this time Paper Back Lever Torsion Spring 5 6 LD Pad ASF Middle Holder Left ASF Middle Holder Right C...

Page 130: ... Roller Shaft but they can only be installed in the correct position so check the shapes of each part when installing them 3 Place the Paper Back Lever Cam in the specified position At this time inset a nail or similar object through the hole on the arc of the Paper Back Lever Cam and the hole in the ASF Right Frame to stop the Cam from moving Figure 4 78 Reassembly 1 4 Move the Support Paper Back...

Page 131: ...nd then check that the two alignment holes are exactly aligned 8 Install the tension spring and the silence cam lever while referring to the disassembly procedure Refer to Section 4 2 14 C H E C K P O I N T When setting the Silence Support Lever in place hook the end of the Torsion Bar Hopper onto the projection on the Silence Support Lever Furthermore if you would like the parts to remain in this...

Page 132: ...C H A P T E R 5 ADJUSTMENT ...

Page 133: ...se once more try the same operation after replacing to new ink cartridge Before clearing the waste ink pad counter using the adjustment program make sure the waste ink pads have been replaced in advance Lack of this operation may case the ink to leak from the lower housing Table 5 1 Actions Taken and Corresponding Adjustment in Order No Actions Taken Step Corresponding adjustment required 1 Printh...

Page 134: ...tment program Refer to Section 5 2 1 2 Perform Bi D adjustment using the adjustment program Refer to Section 5 2 6 5 Clogged nozzle Recovery 1 Setup the adjustment program Refer to Section 5 2 1 2 Perform Head cleaning using adjustment program Refer to Section 5 2 10 NOTE If it has no effect advance to next step 3 Perform Ink Charge using adjustment program Refer to Section 5 2 4 6 Waste ink pad R...

Page 135: ...n initialization Once you encounter the communication error at setup please accede to following steps to prevent the same mistake 1 Turn the printer off 2 Disconnect the AC cable from the AC socket and connect the AC cable again 3 Turn the printer on Printer will enter the power on initializing operation unmistakably 3 Execute the adjustment program attached to the service manual for the Stylus PH...

Page 136: ...bove screen the adjustment program will be closed 5 2 2 Head ID Input This section describes how to input Head ID Perform this operation under the following conditions 1 Printhead has been replaced 2 C456 Main board has been replaced NOTE Always input the Head ID without ink cartridges to prevent unexpected ink out error caused by mismatching between head ID and main board value And once you insta...

Page 137: ...and indicates error message In this case once press Previous button and then restart from step 5 8 Once you input the head ID press the ink switch to install all ink cartridges and make the printer to move to the normal stand by condition 9 After installing all ink cartridges and completing the ink cartridge replacement cleaning press Status button to make the adjustment program detect normal stan...

Page 138: ... sequence When writing the CR balance judgment value 1 Setup the adjustment program Figure 5 3 Main screen appears Refer to Section 5 2 1 2 Select Adjustment and then CR Motor Drive Dispersion Main screen changes as below Figure 5 8 CR motor drive dispersion measurement sequence Initial Screen 3 Select the main circuit board CR motor or power supply circuit board more than one can be selected and ...

Page 139: ...rge Main screen changes as below Figure 5 11 Ink charge Initial Screen 3 Press OK button Then the initial ink charge operation will be performed It will take about 90 seconds to complete it C H E C K P O I N T 1 You can see the current ink amount by referring the status monitor visually And if you can see and understand that the current ink amount cannot keep for the ink charge you should replace ...

Page 140: ...et Paper or Glossy Photo Paper If you use normal plain paper you cannot judge and adjust the head angle correctly 1 After replacing or once removing the printhead install the new printhead or once removed printhead on the carriage unit And do not attach the upper housing 2 Setup the adjustment program Refer to Section 5 2 1 3 Select Head angular Following screen appears Figure 5 12 Head Angular ad...

Page 141: ... leave from the printer NOTE Before you advance to actual adjustment you have to know the judgement standard and how to adjust the head angle Following explanation is its details NOTE Unlike previous models the head angle adjustment on Stylus PHOTO 950 does not require the ink cartridge installation when you loosen or tighten the screws which is securing the head fixing plate to the carriage unit ...

Page 142: ...Figure 5 16 mentioned relationship between adjust lever operation and reaction of angle check pattern decide your target direction and location for the head angle adjustment lever 12 Once you decide your target lever position accede to followings to change the current adjust lever position to your target position Now imagine that head angle condition is in following condition And you want to chang...

Page 143: ... ink button to perform ink cartridge replacement cleaning After completing the cleaning the next head angle check pattern will automatically be printed The program screen returns to the Figure 5 13 automatically 18 If you judge that the adjustment is required one more time select Move the carriage to the adjustment position and press OK button to change head adjustment lever position again The pro...

Page 144: ... as below Figure 5 21 Bi D Adjustment Initial Screen NOTE The following four items are adjusted with the Bi D adjustment 1 Variable Sized Dot 1 for 360 H x 360 V dpi printing 2 Variable Sized Dot 2 for 720 H x 720 V dpi or for 360 H x 720 V dpi printing 3 Variable Sized Dot 2 for 1440 H x 720 V dpi printing 4 Variable Sized Dot 4 for 360 H x 180 V dpi printing NOTE Also the Bi D adjustment has 2 m...

Page 145: ...e most closely aligned vertical line Note if none of the lines in completely aligned you can select the value for the most closely aligned pattern Then center value for the next adjustment pattern print will be replaced and reflected accordingly Bi D Check pattern Variable 1 DOT data 2 data 4 data 6 data 5 Variable 2 DOT data 7 data 9 data 9 data 7 data 5 data 6 data 4 data 2 Variable 2 DOT data 3...

Page 146: ...tern had some completely aligned lines you need not to input it and then you can skip and select another dot type 11 Press O K button on Figure 5 25 screen after inputting all values You can see all values that EEPROM has accepted and registered Figure 5 26 Bi D Adjust Mode 2 NOTE You need not to check your once registered value on the Figure 5 21 screen after completing input Option name is Check...

Page 147: ...user needs not to reinstall the printer driver from the beginning Case 2 Impossible to readout the original USB ID Step 1 Replace to new main board Step 2 Input 10 digits serial number mentioned on the back of the main unit Using adjustment program Step 3 User needs to reinstall the printer driver after he she receives the repaired unit that because USB information is in mismatching between user s...

Page 148: ... program 7 Replace to new main board 8 Setup the adjustment program again Main screen Figure 5 3 appears Refer to Section 5 2 1 9 Select USB ID and then Input USB ID Then press O K button on the program screen 10 Following screen appears Figure 5 29 USB ID Serial Number Input Mode 11 Input the original USB IDs that you wrote down at step 6 then press O K on the program screen 12 Program screen cha...

Page 149: ...Figure 5 32 How to Create 18 digits USB ID Based on 10 Digits Serial Number 5 2 8 EEPROM Initialization This section describes how to initialize the EEPROM what kind of parameter will be initialized and what s for This operation must be made only when you replace to new main board NOTE Even though you perform the EEPROM initialization it does not mean all parameters in EEPROM will be initialized a...

Page 150: ...acceptance screen Figure 5 34 EEPROM Initialization Completion Screen Table 5 2 All Contents of EEPROM Initialization No Items Address Initial Setting After Initialize Setting Contents Purpose 1 CG Table 17H 08H 08H PC 437 Previously we input this value on the opening screen of the adjustment program 2 Font 18H 00H 00H Courier 3 D4 for USB 09H 00H 01H On Since this setting is input on the assembli...

Page 151: ...ht side or the left side has been moved 1 Make sure check that AC cable disconnects to the printer 2 Prepare the thickness gauge The thickness should be 1 27 mm and the width should be 20 mm or more 3 Loosen a screw C B S M3x6 securing the right Parallel adjust bushing NOTE Do not remove a screw completely two or three revolution NOTE You need not to loosen a screw securing Parallel adjust bushing...

Page 152: ...ationship between Right parallel adjust bushing operation and platen gap reaction Figure 5 37 Relationship between Bushing Operation Platen Gap 8 Accede to following steps until you ve completed the right side PG adjustment Figure 5 38 Right Side PG Adjustment 9 One notch down the Parallel adjust bushing and then tighten a screw securing Parallel adjust bushing temporary PG Down Narrower PG Up Wid...

Page 153: ...d check whether the placed thickness gauge moves or not NOTE If you push the carriage unit directly printhead surface is possible to be had a damaging caused by the friction with the thickness gauge 13 Accede to following steps until you ve completed the left side PG adjustment Figure 5 40 Left Side PG Adjustment 14 Shift one notch to left and then tighten a screw securing Parallel adjust bushing ...

Page 154: ... If you cannot recover clogged nozzle s advance to Section 5 2 4 for the ink charge operation 1 Setup the adjustment program Main screen Figure 5 3 appears Refer to Section 5 2 1 2 Select Maintenance and then Head cleaning 3 Main screen changes as below Figure 5 42 Head Cleaning Initial Screen START Move the CR unit using timing belt ThicknessGauge moves One notch up the Parallel adjust bushing Mo...

Page 155: ...bes how to clear the protection counter This operation must be done under the following conditions 1 When replacing waste ink drain pad 2 When user carries on the unit that has been occurred the maintenance error 3 Refurbishment 1 Replace to new waste ink drain pad by referring Chap 4 Disassembly Re assembly 2 Setup the adjustment program Main screen Figure 5 3 appears Refer to Section 5 2 1 3 Sel...

Page 156: ...en 6 Press O K button on the program screen 7 Following screen appears Figure 5 46 Protection Counter Clear Completion Screen NOTE If you want to check the current protection counter accede to following steps 8 On the Figure 5 44 screen select Checking the protection counter and press O K button on the program screen 9 Following screen appears Figure 5 47 Protection Counter Check Screen ...

Page 157: ... Main screen changes as below Figure 5 48 First Dot Position Adjustment Initial Screen 4 Check the current Left and Right Margins between printed line and paper top edge using a measure And decide your target adjust value ex 1mm or 2mm 5 Use the UP DOWN keys and the left and right buttons in the program screen to select the desired value and then click OK NOTE If you click on the UP DOWN arrow but...

Page 158: ...C H A P T E R 6 MAINTENANCE ...

Page 159: ... detergent to wipe it off Inside the printer Use a vacuum cleaner to remove any paper dust ASF LD Roller If paper dust on the surface of ASF LD Roller lowers the friction set the adhesive surface of the cleaning sheet included in the media to the surface of the ASF roller and repeat loading paper from the ASF ROM C456 Main Board C A U T I O N Never use chemical solvents such as thinner benzine and...

Page 160: ... predetermined limit the printer indicates Maintenance Error and the waste ink pad should be replaced Overflow Counter Limit Overflow Counter Protection Counter A 47325 Timing for Replacing the Waste Ink Pad When the total amount of the waste ink reaches the predetermined limit the LED indicates Maintenance Error Refer to Section 1 5 4 Printer Conditions and Panel Status Also troubleshooting chap ...

Page 161: ... to the new pad Accordingly you need to perform any necessary head related adjustment Refer to Chapter 5 C A U T I O N When installing the carriage guide shaft after oiling the oil pad be sure to clean the shaft and perform the preliminary lubrication before installing the shaft as described below 1 Using a dry cotton cloth wipe off the oil on the carriage guide shaft surface well to remove dirt c...

Page 162: ...t s surface with a dry cloth Figure 6 2 Cleaning the Carriage Guide Shaft 4 Remove the Oil Pad a felt pad from the back of the carriage unit NOTE Donot re use once removed pad 5 Remove 2 springs securing sub oil pads and remove 2 sub oil pad NOTE Donot re use once removed sub oil pads Figure 6 3 Oil Pads and Securing Spring 6 Using the dry cloth completely wipe the inner surfaces of the 2 metallic...

Page 163: ...sing the oiled side of the pad step 8 lubricate the carriage guide shaft surface thoroughly Figure 6 7 Preliminary Lubrication with O 12 11 Install the other new oil pad to the specified position at the back of the carriage 12 Install new sub oil pads to both bushing of the carriage and re attach 2 springs to secure 2 sub oil pads C A U T I O N Be sure to use a small diameter syringe to minimize t...

Page 164: ...ter 4 Section 4 2 6 16 Install the printhead See Chapter 4 Section 4 2 5 17 Perform Paper Gap Adjustment See Chapter 5 Section 5 2 9 18 Turn the printer on without the ink cartridges installed to cause the Ink Cartridge Out Error 19 Using the Ink button run the Ink Cartridge Replacement Sequence and install new ink cartridges 20 Using the service program perform Initial Ink Charge See Chapter 5 Se...

Page 165: ...e bushing Use a brush to apply it Refer to Figure 6 9 Lubrication Point 1 2 Lubrication Point Channel that connects the PF roller shaft and grounding wire Lubrication Type G 26 Lubrication Amount Apply 1mm diameter drops around 1 3 the diameter of the connecting part Refer to Figure 6 10 Lubrication Point 2 Lubrication Point Rear paper guide and PF roller shaft connection Lubrication Type G 26 Lub...

Page 166: ...on Point Shafts of frame upper left 3 places Lubrication Type G 26 Lubrication Amount 1mm diameter total length of shaft Refer to Figure 6 19 Lubrication Point 11 Table 6 2 Lubrication Points Ref No Lubrication Type Point Remarks 12 Lubrication Point Teeth of Adjust lever top and bottom Lubrication Type G 26 Lubrication Amount 1mm diameter total length of toothed surface Refer to Figure 6 20 Lubri...

Page 167: ...drops all around inside circumference of holes 2 1mm diameter total length of shaft Refer to Figure 6 28 Lubrication Point 20 Table 6 2 Lubrication Points Ref No Lubrication Type Point Remarks 21 Lubrication Point Torsion bar shaft bearing on ASF frame right Lubrication Type G 26 Lubrication Amount 1mm diameter total length of shaft bearing Refer to Figure 6 29 Lubrication Point 21 22 Lubrication ...

Page 168: ...N Stylus PHOTO 950 Revision A MAINTENANCE Overview 168 Figure 6 9 Lubrication Point 1 Figure 6 10 Lubrication Point 2 Figure 6 11 Lubrication Point 3 Figure 6 12 Lubrication Point 4 G 26 G 26 G 26 G 26 G 26 ...

Page 169: ...SON Stylus PHOTO 950 Revision A MAINTENANCE Overview 169 Figure 6 13 Lubrication Point 5 Figure 6 14 Lubrication Point 6 Figure 6 15 Lubrication Point 7 Figure 6 16 Lubrication Point 8 G 26 G 26 G 26 G 26 ...

Page 170: ...N Stylus PHOTO 950 Revision A MAINTENANCE Overview 170 Figure 6 17 Lubrication Point 9 Figure 6 18 Lubrication Point 10 Figure 6 19 Lubrication Point 11 Figure 6 20 Lubrication Point 12 G 26 G 26 G 26 G 26 ...

Page 171: ...N Stylus PHOTO 950 Revision A MAINTENANCE Overview 171 Figure 6 21 Lubrication Point 13 Figure 6 22 Lubrication Point 14 Figure 6 23 Lubrication Point 15 Figure 6 24 Lubrication Point 16 G 26 G 26 G 26 G 26 ...

Page 172: ...N Stylus PHOTO 950 Revision A MAINTENANCE Overview 172 Figure 6 25 Lubrication Point 17 Figure 6 26 Lubrication Point 18 Figure 6 27 Lubrication Point 19 Figure 6 28 Lubrication Point 20 G 26 G 26 G 26 G 26 ...

Page 173: ...N Stylus PHOTO 950 Revision A MAINTENANCE Overview 173 Figure 6 29 Lubrication Point 21 Figure 6 30 Lubrication Point 22 Figure 6 31 Lubrication Point 23 Figure 6 32 Lubrication Point 24 G 26 G 26 G 26 G 26 ...

Page 174: ...C H A P T E R 7 APPENDIX ...

Page 175: ...ion with the Power Supply Board Table 7 2 CN4 For connection with the Panel Board Table 7 3 CN5 For connection with the CR Motor Table 7 4 CN6 For connection with the PF Motor Table 7 5 CN7 For connection with the Pump Motor Table 7 6 CN8 For connection with the PF Encoder Table 7 7 CN9 For connection with the Printhead including CR encoder input Table 7 8 CN10 For connection with the Printhead in...

Page 176: ...se drive signal A 2 ASF B O Phase drive signal B 3 ASF A O Phase drive signal A 4 ASF B O Phase drive signal B Table 7 7 CN8 PF Encoder Pin Signal Name I O Function 1 ENB I Feed back signal from PF encoder ch B 2 GND Ground 3 ENA I Feed back signal from PF encoder ch A 4 VCC 5V logic power supply Table 7 8 CN9 Printhead Pin Signal Name I O Function 1 COMF Head drive pulse trapezoid waveform 2 GND2...

Page 177: ...l for the Trapizoidal wave form 13 VDD 5V logic power supply 14 SP O Select signal for CH signal 15 GND Ground 16 NCHG O All nozzle fire selection pulse Table 7 8 CN9 Printhead Pin Signal Name I O Function 17 ANODE I Abnormal temperature detection circuit for the nozzles 18 GND Ground 19 COMA Head drive pulse trapezoid waveform 20 GND2A Ground 2A 21 GND2A Ground 2A 22 COMC Head drive pulse trapezo...

Page 178: ...on 1 PG2 I Release signal 2 GND Ground Table 7 13 CN14 Cutter Unit Pin Signal Name I O Function 1 CT1 I Cutter position sensor 1 2 CTON I Cutter unit sensor 3 CTV O Power control for cutter 4 GND Ground 5 5V 5V logic power supply 6 GND Ground 7 CT2 I Cutter position sensor2 8 IN1 O Cutter control 1 9 IN2 O Cutter control 2 ...

Page 179: ...2 Special 1 3 Special 2 00H 00H 07H ECP speed 1 0 Fast 1 Slow 00H 00H 08H IEEE1284 4 for Parallel 0 Auto 1 On 2 Off 00H 01H 09H IEEE1284 4 for USB 0 Auto 1 On 2 Off 00H 01H 0AH I F Control flags Bit1 ECP mode 0 Off 1 On 2 Bit0 IEEE1284 mode 0 On 1 Off 3 00H 00H 0BH Reserved 00H 0CH Reserved 00H 0DH Reserved 00H 0EH Reserved 00H 0FH Reserved 00H 10H CPSI password 00H 00H 11H CPSI password 00H 00H 1...

Page 180: ...2 by 0 00882mm 1 2880inch 00H 4 23H Bi D Adjustment for VSD2 Cl 720dpi x 720dpi 72 n 72 by 0 00882mm 1 2880inch 00H 4 24H Bi D Adjustment for VSD2 Cl 1440dpi x 720dpi 72 n 72 by 0 00882mm 1 2880inch 00H 4 25H Bi D Adjustment for VSD4 Cl 72 n 72 by 0 00882mm 1 2880inch 00H 4 26H 1st Dot Position Adjustment 72 n 72 by 0 00882mm 1 2880inch 00H 4 27H Error Code2 00H 00H 28H PF Measurement offset 1 00H...

Page 181: ...1pass 00H 00H 3DH 00H 00H 3EH 00H 00H 3FH 00H 00H 40H Password 0FH 41H 5AH 42H Ink flag1 bit7 CSIC Disable bit6 Initial fill required bit5 ink cleaning seq bit4 cartridge changing seq bit3 cleaning another type cartridge bit2 flushing another type cartridge bit1 1st cartridge bit0 past cartridge type 00H 41H 43H Reserved for Ink flag2 00H 00H 44H Ink counter Cb1 00H 00H 45H 00H 00H 46H 00H 00H 47H...

Page 182: ...50H Ink counter Cm 00H 00H 51H 00H 00H 52H 00H 00H 53H 00H 00H 54H Ink counter Clc 00H 00H 55H 00H 00H 56H 00H 00H 57H 00H 00H 58H Ink counter Clm 00H 00H 59H 00H 00H 5AH 00H 00H 5BH 00H 00H 5CH Ink counter Cb2 00H 00H 5DH 00H 00H 5EH 00H 00H 5FH 00H 00H 60H Flushed into Cap counter 00H 00H 61H 00H 00H Table 7 14 EEPROM Address Map Address Explanation Setting QPIT settings Factory settings ...

Page 183: ...H 00H 00H 72H 77H Reserved 00H 00H 78H Cleaning Counter KK 00H 00H 79H Accumulated CL1 Counter 00H 00H 7AH Accumulated CL2 Counter 00H 00H 7BH Accumulated CL3 Counter 00H 00H 7CH CSIC Error Code 00H 00H 7DH Accumulated TCL Counter 00H 00H 7EH Accumulated Cartridge Change CL Counter 00H 00H 7FH Accumulated Another Type Cartridge CL Counter 00H 00H 80H Password 0FH 81H 5AH 82H Shift Bit A 16 n 16 00...

Page 184: ...et 32 n 71 00H 4 A8H Head Actuator Rank ID for Iw_K 32 n 71 00H 4 A9H Head Actuator Rank ID for Iw_C 32 n 71 00H 4 AAH Head Actuator Rank ID for Iw_LC 32 n 71 00H 4 ABH Head Actuator Rank ID for Iw_M 32 n 71 00H 4 ACH Head Actuator Rank ID for Iw_LM 32 n 71 00H 4 ADH Head Actuator Rank ID for Iw_Y 32 n 71 00H 4 AEH Head Actuator Rank ID for Tc 0 n 2 00H 4 AFH TG Maker 0 SHARP x murata 1 SHARP x TD...

Page 185: ...orld 1 Japan 2 Custom 00H 00H E1H Reserved 00H E2H FFH Model Name 00H NOTE 1 BUSY signal delay time from fall edge of a STB signal Fast Max 1MB s Slow Max 600KB s 2 Select IEEE1284 transfer mode ECP or Nibble 3 Enable or disable reverse transfer when disabled ignore SLIN signal 4 Adjusted at factory 5 Initialized after performed panel initialization of EEPROM 6 Initialized after performed panel in...

Page 186: ...0AH CSIC Product Year 0BH CSIC Product Month 0CH CSIC Product Day 0DH CSIC Product Hour 0EH CSIC Product Minute 0FH CSIC Product Serial Number 10H CSIC Product Line 1 L 11H CSIC Product Line 1 H 12H CSIC Product Line 2 13H CSIC Recycle Counter 14H CSIC Cartridge Name 1 L 15H CSIC Cartridge Name 1 H 16H CSIC Cartridge Name 2 17H CSIC Ink Name 1 18H CSIC Ink Name 2 19H CSIC Effect Period 1AH CSIC Op...

Page 187: ...Electrical Circuits 187 7 2 Electrical Circuits The electric circuit diagrams below are shown at the following pages C456 MAIN control circuit board C456 PSB power supply circuit board C456 PSE power supply circuit board C456 PANEL circuit board ...

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