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Epson Stylus Photo 750 [10/114] General description
![Epson Stylus Photo 750 [10/114] General description](/views2/1143869/page10/bga.png)
EPSON Stylus Photo 750 Revision A
Product Description General Description 5
1.2 General Description
1.2.1 Printing
PRINTING METHOD
†
On demand ink jet
NOZZLE CONFIGURATION
†
48 nozzles x 6 (Black, Cyan, Magenta, Yellow, Light Cyan, Light
Magenta)
Figure 1-2. Nozzle Configuration
PRINTING DIRECTION
†
Bi-direction with logic seeking
PRINTING SPEED AND PRINTABLE COLUMNS
†
Character mode
Table 1-1. Printing Speed
** This value is the speed of one print-pass in which the 1/3 of character
matrix is printed.
†
Raster graphics mode
Table 1-2. Raster Graphics Mode
CONTROL CODE
†
ESC/P Raster
†
EPSON Remote command
CHARACTER TABLES
†
2 international character sets
„
PC437 (US, Standard Europe)
„
PC850 (Multilingual)
#1
#48
0.212 m m
(3 /3 6 0 ")
Bk C yan LC M LM
Y sp02
Character Pitch Printable columns LQ speed
10 CPI (Pica) 80 200CPS**
Horizontal
resolution
Printable area Available dot CR Speed
180 dpi 8.26 inch 1488 20 IPS
360 dpi 8.26 inch 2976 20 IPS
720 dpi 8.26 inch 5952 20 IPS
Содержание
- Stylus photo 7850 1
- Notice 2
- Danger 3
- Precautions 3
- Warning 3
- About this manual 4
- Contents 4
- Symbols used in this manual 4
- Revision issued date description 5
- Revision status 5
- Adjustment 6
- Disassembly and assembly 6
- Operating principles 6
- Product description 6
- Stylus photo 750 revision a 6
- Table of contents 6
- Troubleshooting 6
- Appendix 7
- Maintenance 7
- Stylus photo 750 revision a 7
- Product description 8
- General characteristics 9
- Overview 9
- General description 10
- Printing 10
- Paper feeding 11
- Paper specification 11
- Cut sheet 12
- Epson stylus photo 750 revision a 12
- Figure 1 3 printable area 12
- Note bottom margin can be set up to 3mm at minimum when the paper length is designated with esc s command however there is the possibility that a printing scrambles in the area ranging from 3mm to 14mm from the form lower end when the paper length is not designated the bottom margin must be wider than 14 mm 12
- Printable area 12
- Product description general description 7 12
- Table 1 3 printable area 12
- The figure below shows printable area 12
- Adjust lever settings 13
- Envelope 13
- Epson stylus photo 750 revision a 13
- Figure 1 4 printable area 13
- Figure 1 5 adjust lever 13
- Product description general description 8 13
- Table 1 4 envelope 13
- Table 1 5 setting position of adjust lever 13
- The adjust lever located under the printer cover right side needs to be set for the proper paper setting according to the paper type 13
- Environmental conditions 14
- Black ink cartridge 15
- Color ink cartridge 15
- Ink cartridge 15
- Acoustic noise 16
- Electric specification 16
- Input data buffer 16
- Reliability 16
- Safety approvals 16
- Ce marking 17
- Esc p control codes 17
- Printer language and emulation 17
- Busy signal is set high before setting either error low or pe high and is held high until all these signals return to their inactive state 19
- Busy signal is set high level in the following cases during data entry see data transmission timing when input data buffer is full during init signal is at low level or during hardware initialization during printer error see error signal when the parallel interface is not selected 19
- Epson stylus photo 750 revision a 19
- Error signal is at low level when the printer is in one of the following states printer hardware error fatal error paper out error paper jam error ink out error 19
- Forward channel is the mode to transfer the ordinary printing order to the printer side from the pc side 19
- Parallel interface 19
- Parallel interface forward channel 19
- Pe signal is at high level during paper out error 19
- Product description parallel interface 14 19
- Table 1 6 parallel i f 19
- Table 1 7 connector pin assignment and signals 19
- This printer has ieee 1284 parallel interface rs 423 serial interface and usb interface as standard 19
- Device id the printer sends following device id string when it is requested 20
- Epson stylus photo 750 revision a 20
- Extensibility request the printer responds affirmatively when the extensibility request values are 00h or 04h that mean 00h request nibble mode reverse channel transfer 04h request device id return data using nibble mode rev channel transfer 20
- Note in out refers to the direction of signal flow from the printer s point of view 20
- Parallel interface reverse channel 20
- Product description parallel interface 15 20
- Reverse channel is used to transfer the information data from the printer side to the pc side 20
- Table 1 8 connector pin assignment and signals 20
- When ieee1284 protocol is effective 00h 57h mfg epson cmd escpl2 bdc d4 mdl stylusspphotosp750 cls printer des epsonspstylusspphotosp750 20
- Epson stylus photo 750 revision a 21
- Note 00h denotes a hexadecimal value of zero sp denotes a space character 20h mdl and des values depend on the eeprom setting 21
- Product description parallel interface 16 21
- Table 1 9 connect pin assignment and signals 21
- When ieee1284 protocol is not effective 00h 57h mfg epson cmd escpl2 bdc mdl stylusspphotosp750 cls printer des epsonspstylusspphotosp750 21
- Epson stylus photo 750 revision a 23
- Figure 1 10 serial i f connector port 23
- Following figure shows port arrangement of serial i f connector 23
- Following table shows timing relation of dtr x on x off handshaking 23
- Note in out refers to the direction of signal flow from the printer s point of view 23
- Product description parallel interface 18 23
- Serial interface 23
- Table 1 11 serial interface 23
- Table 1 12 connector pin assignment and signals 23
- Table 1 13 x on x off dtr protocol 23
- This section shows specification for serial interface i f 23
- Usb universal serial bus interface 24
- Ieee 1284 protocol 25
- Interface selection 25
- Prevention of data transfer time out on the host 25
- Bi directional command 26
- Control code 26
- Control panel 26
- Epson stylus photo 750 revision a 26
- Figure 1 12 control panel 26
- Function 26
- Note 1 refer to table 1 17 status printing on page 22 2 not described in the user s manual not open to the users 3 see the table in the section special setting mode 26
- Product description function 21 26
- Remote setting command refer to remote command specification for details 26
- Since this printer does not have so many switches each button has several functions the tables below show their functions and how to enter those functions for each switch 26
- Switches 26
- Table 1 15 panel functions in normal state 26
- Table 1 16 panel function with turning on 26
- There are 2 non lock type push switches 1 lock type push switch and 4 leds the figure below shows the exterior view of the control panel 26
- This printer is operated with the raster graphics control code based on the esc p2 control line refer to esc pv2 reference manual and esc p2 specification for each command and esc sequence 26
- Led indications 27
- Special setting mode 27
- Epson stylus photo 750 revision a 28
- Errors 28
- In this printer when the following conditions are detected the printer goes to the error condition sets error signal low and busy signal high and stops receiving the data the printer becomes unable to print at this time however if the printer communicated by ieee1284 protocol the printer does not become unprintable state 28
- Ink out when the printer runs out most of the ink of any one color it indicates ink low warning and keeps printing when the print runs out the whole ink of any one color it indicates ink error and stops printing exchanging ink cartridges is required on this state an ink cartridge taken out once should not be used again re installation of the cartridge upsets the ink level detection and may cause a serious problem to the print head as a result 28
- Never use or re install the cartridge which is taken out once re installation of the used cartridge disturbs the normal ink out detection 28
- Note 1 refer to fatal error under the errors on page 23 2 eeprom reset does not mean to erase all address in eeprom see special setting mode on page 22 3 in the table above means no change 28
- Paper jam when the printer fails to eject a sheet it becomes paper jam error condition 28
- Paper out when the printer fails to load a sheet it becomes paper out error condition 28
- Product description function 23 28
- Table 1 19 printer status displayed on the control panel 28
- Initialization 29
- Initialization setting 30
- Physical specification 30
- Consumables and options 31
- Epson stylus photo 750 revision a 31
- Product description function 26 31
- Table 1 20 consumables 31
- The consumables and options for this printe are following 31
- Operating principles 32
- Overview 33
- Printer mechanism 33
- C257 psb power supply circuit 35
- Operating principles of electric circuit 35
- 42v line constant voltage control circuit the output level of the 42v line is monitored by a detection circuit consisting of seven zener diodes this circuit prevents from dropping for constant output voltage 36
- 42vdc line drop limitation circuit this protection circuit is in the same line as 42v over voltage protection circuit is located the output voltage level of the 42v line is monitored by a zener diode this circuit shuts down the circuit operation forcefully when the voltage levels drops 36v 36
- 42vdc line over voltage circuit this circuit is in the same line as 5v line over voltage protection circuit is installed the output level is monitored by two zener diodes if the voltage level exceeds 48vdc this circuit stops circuit operation forcefully 36
- 5v line constant voltage constant current control circuit the output current is monitored by a 5vdc generation switching control ic ic51 which also monitors the output voltage this information is input to the internal comparator and stabilizes 5v line 36
- 5v line over voltage protection circuit this protection circuit is in the same line as 42v over voltage protection circuit is located the output voltage level of the 5v line is monitored by a zener diode this circuit shuts down the circuit operation forcefully when the voltage level exceeds 9v 36
- Epson stylus photo 750 revision a 36
- Figure 2 3 power supply circuit block diagram 36
- Operating principles operating principles of electric circuit 31 36
- Trans t1 36
- C259 main control circuit 37
- Epson stylus photo 750 revision a 37
- Figure 2 4 control circuit block diagram 37
- Major elements 37
- Major elements used in c259 main control circuit board are below 37
- Operating principles operating principles of electric circuit 32 37
- Printer mechanism is controlled by c259 main board the figure below shows the block diagram of c259 main control circuit 37
- Table 2 2 major elements 37
- Epson stylus photo 750 revision a 38
- Figure 2 5 reset circuit 38
- Operating principles operating principles of electric circuit 33 38
- Reset circuit 38
- Reset circuit consists of reset timer ic ic8 and peripheral elements the reset timer ic prevents the cpu from running away which is caused by the unstable voltage 5vdc line voltage is less than 4 v in the logic line during the power on off operation also ic sends the reset signal to the cpu and gate array when 42vdc line voltage is less than 35 v 38
- Sensor circuit 39
- At93c46 ic7 40
- Cpsi pass word 40
- Destination data 40
- Driven voltage wave form circuit this circuit consists of hic ic14 and terminal transistor and generates drive wave which will be charged to each pzt 40
- E05b58 ic2 40
- Eeprom control circuit 40
- Epson stylus photo 750 revision a 40
- Figure 2 7 eeprom control circuit 40
- Figure 2 8 common drive circuit 40
- Frequency of cleaning 40
- Head drive circuit 40
- Head drive circuit of this printer consists of the following circuits 40
- Ink consumption counter black color 40
- Operating principles operating principles of electric circuit 35 40
- Other various setting values 40
- The timer of this printer uses reset timer ic ic8 the timer keeps record of how long the printer is off and uses it information to judge it the initial cleaning should be performed or not when the power it turned on next time the data in the ic is backed up by the lithium battery 40
- This printer uses non volatile memory eeprom ic7 when turning the power on eeprom outputs data to the gate array ic2 and records the data when turning the power off the data which eeprom will record are followings 40
- Timer circuit 40
- Driver on the head the driver on the head is nozzle selector drive circuit each drive waveform generated in the drive voltage wave form circuit is charged to the selected nozzle by this circuit with pzt elements then printing is performed 41
- Epson stylus photo 750 revision a 41
- Figure 2 9 paper feed pump motor drive circuit 41
- Ic12 and ic13 on the control circuit board drive pf pump motor this motor uses 4 phase 200 pole hybrid type stepping motor and drives constant current bi pola 41
- Operating principles operating principles of electric circuit 36 41
- Paper feed pump motor pf pump motor drive circuit 41
- Carriage motor cr motor drive circuit 42
- Cr motor is driven by ic11 mounted on the c259 main control board 4 phase 200 pole hybrid type stepping motor is used as a cr motor and is driven by bi pola constant drive control 42
- Epson stylus photo 750 revision a 42
- Figure 2 10 carriage motor drive circuit 42
- Operating principles operating principles of electric circuit 37 42
- Troubleshooting 43
- Epson stylus photo 750 revision a 44
- Figure 3 1 troubleshooting flowchart 44
- Overview 44
- Table 3 1 motor coil resistance 44
- Table 3 2 sensor check point 44
- This section describes how to identify and troubleshoot the problems when repairing the printer by dividing the troubles into two levels repair and replacement of the assemblies and units and repair of the components refer to the flowchart below and perform repairing the component after separating the defective units 44
- Troubleshooting overview 39 44
- Epson stylus photo 750 revision a 45
- Table 3 3 error indication 45
- Troubleshooting overview 40 45
- Abnormal control panel no responds from the printer even after pressing switches 5 46
- Abnormal paper feeding paper jam occurs page heading position is not right 46
- Abnormal printing operation 46
- Epson stylus photo 750 revision a 46
- Error is detected led indicates error 2 46
- Figure 3 2 flowchart 1 46
- No led goes on printer mechanism does not operate at all 1 46
- Paper feeding is not performed correctly 46
- Printer does not operate 46
- Printing is not performed bad printing quality abnormal printing 3 46
- Symptom cause flow chart 46
- Table 3 4 symptoms and corresponding flow chart 46
- This section contains the flow charts which are used to isolate the faulty unit by following the flow chart according to the problem caused during replacing or repairing the unit you are to identify the faulty unit based on the primary symptom listed in the table3 4 after this refer to 3 unit repair and find and replace the defective parts 46
- Troubleshooting unit level troubleshooting 41 46
- Unit level troubleshooting 46
- Abnormal printing operation 47
- Epson stylus photo 750 revision a 47
- Error is detected 47
- Figure 3 3 flowchart 2 47
- Figure 3 4 flowchart 3 47
- Troubleshooting unit level troubleshooting 42 47
- Abnormal control panel 48
- Epson stylus photo 750 revision a 48
- Figure 3 5 flowchart 4 48
- Figure 3 6 flowchart 5 48
- Paper feed operation is not performed correctly 48
- Troubleshooting unit level troubleshooting 43 48
- Epson stylus photo 750 revision a 49
- Table 3 5 repair of the power supply board table 3 6 repair of the power supply board 49
- This section describes the problems related to the power supply board the table below provides various symptoms likely causes and checkpoints the checkpoints refer to waveforms resistance and other values to check to evaluate the operation of each component 49
- Troubleshooting unit repair power supply board 44 49
- Unit repair power supply board 49
- Epson stylus photo 750 revision a 50
- Repair of the control board 50
- Table 3 7 repair of the control board table 3 8 repair of the control board 50
- This section describes the problems related to the power supply board the table below provides various symptoms likely causes and checkpoints the checkpoints refer to waveforms resistance and other values to check to evaluate the operation of each component 50
- Troubleshooting repair of the control board 45 50
- Epson stylus photo 750 revision a 51
- Table 3 9 repair of the control board 51
- Troubleshooting repair of the control board 46 51
- Epson stylus photo 750 revision a 52
- Table 3 10 repair of the printer mechanism 52
- Table 3 11 repair of the printer mechanism 52
- This section provides instruction for repairing mechanism it describes various problems symptom likely causes checkpoints and solutions select appropriate symptom from the the table and check each parts and its function as describes in the checkpoint 52
- Troubleshooting unit repair printer mechanism 47 52
- Unit repair printer mechanism 52
- Epson stylus photo 750 revision a 53
- Table 3 12 repair of the printing mechanism table 3 13 repair of the printing mechanism 53
- Troubleshooting unit repair printer mechanism 48 53
- Epson stylus photo 750 revision a 54
- Table 3 14 repair of the printer mechanism table 3 15 repair of the printer mechanism 54
- Troubleshooting unit repair printer mechanism 49 54
- Disassembly and assembly 55
- Overview 56
- Precautions 56
- Disassembly and assembly overview 52 57
- Epson stylus photo 750 revision a 57
- If any service is made to the printer use the checklist shown below to confirm that all works are completed properly and the printer is ready to return to the user 57
- Table 4 2 check list 57
- Table 4 3 check list 57
- Work completion check 57
- Disassembly 58
- Disassembly and assembly disassembly 53 58
- Epson stylus photo 750 revision a 58
- Figure 4 1 flowchart 58
- The flowchart below shows step by step disassembly procedures 58
- Housing removal 59
- Circuit boards removal 60
- Control panel removal 62
- Absorber tray assembly a removal 63
- Print head removal 64
- Printer mechanism removal 64
- Pump assembly cap assembly removal 66
- Motor assembly cr removal 68
- Motor assembly pf removal 69
- Asf assembly removal 70
- Paper feed roller assembly removal 71
- Roller assembly ld left right removal 72
- Carriage assembly removal 73
- Pe sensor assembly removal 75
- Roller assembly pf removal 76
- Hp sensor removal 78
- Cartridge sensor sensor i c removal 79
- Adjustment 81
- Adjustment overview 77 82
- Epson stylus photo 750 revision b 82
- Note o required adjustment na not applicable 82
- Overview 82
- Required adjustment 82
- Table 5 1 lists all the necessary adjustments for this printer if any service listed in this table is carried out all adjustments corresponding to that service should be performed to ensure proper operation of the printer 82
- Table 5 1 required adjustment 82
- This section describes the procedure for adjustments required when the printer is disassembled and assembled for repair 82
- Adjustment 83
- Paper gap adjustment 83
- Adjustment by adjustment program 85
- Adjustment program 85
- How to use the adjustment program 85
- Setting destination information 87
- Head voltage id adjustment 88
- Head angular adjustment 89
- Bi d adjustment 91
- Head cleaning 92
- Initial ink charge 93
- Counter value for ink absorber 94
- Protect counter reset 94
- Protect counter value 94
- Maintenance 95
- Cleaning 96
- Overview 96
- Service maintenance 96
- Epson stylus photo 750 revision a 97
- Lubrication 97
- Maintenance overview 92 97
- Never use oil and the grease other than those specified in this manual use of different types of components can damage the component or give bad influence on the printer function never apply larger amount of lubricate than specified in this manual 97
- Table 6 1 specified lubricants 97
- Table 6 2 lubrication point 97
- The type and amount of oil and grease used to lubricated the printer parts are determined based on the results of internal evaluations therefore be sure to apply the specified type and amount of oil and grease to the specified part of the printer mechanism during servicing 97
- Epson stylus photo 750 revision a 98
- Maintenance overview 93 98
- Table 6 3 lubrication point table 6 4 lubrication point 98
- Epson stylus photo 750 revision a 99
- Maintenance overview 94 99
- Epson stylus photo 750 revision a 100
- Maintenance overview 95 100
- Appendix 101
- Appendix connector summary 97 102
- Connector summary 102
- Control board c259 main or c264 main 102
- Control panel c209pnl 102
- Epson stylus photo 750 revision b 102
- Figure 7 1 connection of the major components 102
- Major component unit 102
- Major component unit of this printer is as follows 102
- Power supply board c257 psb c257 pse 102
- Printer mechanism m 4m11 102
- Table 7 1 connector summary for c259main 102
- Table 7 2 connector cn4 102
- The figure below shows how these components are connected 102
- Appendix connector summary 98 103
- Epson stylus photo 750 revision b 103
- Table 7 3 connector cn5 103
- Table 7 4 connector cn6 103
- Table 7 5 connector cn7 103
- Table 7 6 connector cn8 103
- Table 7 7 connector cn9 103
- Appendix connector summary 99 104
- Epson stylus photo 750 revision b 104
- Table 7 10 connector cn11 104
- Table 7 8 connector cn9 table 7 9 connector cn10 104
- Component layout 105
- Appendix exploded diagram 102 107
- Epson stylus photo 750 revision b 107
- Exploded diagram 107
- Exploded diagram for epson stylus photo 750 1 3 107
- Figure 7 6 exploded diagram 1 107
- Following pages shows exploded diagram of stylus photo 750 107
- Appendix exploded diagram 103 108
- Epson stylus photo 750 revision b 108
- Exploded diagram for epson stylus photo 750 2 3 108
- Figure 7 7 exploded diagram 2 108
- Appendix exploded diagram 104 109
- Epson stylus photo 750 revision b 109
- Exploded diagram for epson stylus photo 750 3 3 109
- Figure 7 8 exploded diagram 3 109
- Electric circuit 110
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