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EPSON Stylus Color 600
SERVICE MANUAL
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Chapter 4 Adjustment
4.1 OVERVIEW ...............................................................................................................1
4.1.1 Required Adjustments .............................................................................................................. 1 4.1.2 Tools Required for Adjustment ................................................................................................ 1
4.2 Adjustments .............................................................................................................2
4.2.1 Paper Gap Adjustment .............................................................................................................. 2 4.2.2 Adjustment using Adjustment Program.................................................................................. 4 4.2.2.1 Overview of Adjustment Program ................................................................................ 4 4.2.2.2 Ink Charge Operation ................................................................................................... 5 4.2.2.3 VH Setting .................................................................................................................... 7 4.2.2.4 ead Angular Adjustment ............................................................................................... 9 4.2.2.5 Bi-D Alignment Adjustment .........................................................................................11
Chapter 4 Adjustment
4.1 OVERVIEW
This section describes the procedure for adjustments required when the printer is disassembled and assembled for repair.
4.1.1 Required Adjustments
Table 4-1 lists all the adjustments required with 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. Table 4-1. Required Adjustments
Performance Order Service Performed
1 Paper-Gap Adjustment
NA NA NA NA
2 Ink Charge
3 VH Setting
Replacing the printer mechanism Replacing the C209 MAIN board Replacing the printhead unit Replacing the CR Motor Replacing or disassembling the carriage assembly Replacing or disassembling the PF Roller assembly
NA NA NA
NA NA NA
4 Head Angular Adjustment NA
5 Bi-D Adjustment
NA
NA
NA
NA
Note) " ": "NA":
Required adjustment Not applicable
4.1.2 Tools Required for Adjustment
Table 4-2lists all the tools required to make the specified adjustments. Table 4-2. Required Tools No. 1 2 Name Thickness Gauge Adjustment Program Adjustment Paper-Gap Adjustment
Ink Charge VH Setting Head Angular Bi-D Alignment
Notes Thickness: 1.04mm EPSON Code: B776702201 Program Name: J90C00E
CAUTION
Do not use rusty or deformed thickness gauge for adjustment. Wipe off any dirt or dust from the thickness gauge before use.
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EPSON Stylus Color 600 Service Manual
4.2 Adjustments
This section describes the detail procedure of each adjustment.
4.2.1 Paper Gap Adjustment
The paper gap is a distance between nozzle surface of the printhead unit and a paper surface and is adjusted to specified gap at the assembly. Therefore, if the carriage assembly is removed from the printer mechanism for any reason, this adjustment should be made to fix the gap.
CAUTION
Do not scratch the surface of "PAPER GUIDE, FRONT;B" and "ROLLER, ASSEMBLY, PF". Be careful not to damage or make dirty the nozzle surface of the printhead unit.
[Paper gap - Right-hand side Adjustment] 1. Attach both "BUSH, PARALLEL ADJUST" (L/R) to the side frame and align the position mark on top edge of it to a notch on the edge of the side frame. 2. Set "LEVER, PG" to front side (Position "0"). 3. Move the carriage assembly to the middle, and put the thickness gauge at the position specified in he figure. 4. Move the carriage assembly over the thickness gauge.
WORK POINT
The thickness gauge must be placed on a flat surface of the ribs of "PAPER GUIDE, FRONT;B". During adjustment, always pull the timing belt to move the carriage assembly.
5. Shift the position of "BUSH, PARALLEL ADJUST, RIGHT" to backward (Gap: Narrower) until when the thickness gauge starts sliding together with the carriage assembly when you move it to right and left for about 20mm. 6. At the point of above step, shift the position of "BUSH, PARALLEL ADJUST, RIGHT" for one notch to forward (Gap: Wider). 7. Then, confirm that the thickness gauge do not slide when you move the carriage assembly, with either "LEVER, PG" is at position "0" or "+".
[Paper gap - Left-hand side Adjustment] 8. Repeat the above step 2 to 7 with "BUSH, PARALLEL ADJUST, LEFT". [Gap Confirmation] 9. Repeat the step 3 to 4 again. 10. Confirm that the thickness gauge do not slide when you move the carriage assembly to right and left for above 20mm. 11. Shift the position of "BUSH, PARALLEL ADJUST, RIGHT" for one notch to backward (Gap: Narrower) and confirm that the thickness gauge is sliding by moving the carriage assembly. If not, return to step 1 and repeat adjustment again. 12. If the gap is correct, shift "BUSH, PARALLEL ADJUST, RIGHT" for one notch to forward (Gap: Wider). [Fixing "BUSH, PARALLEL ADJUST"] 13. Fix both bushes with 2 screws (1 each : No.1).
When the paper gap adjustment complete, confirm that the overlap of printhead nose and "CLEANER, HEAD". 1. Move the carriage assembly next to "CLEANER, HEAD". 2. Confirm that the overlap of printhead nose and top edge of "CLEANER, HEAD" is more than 0.5mm.
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Chapter 4 Adjustment
Left "PAPER GUIDE, FRONT;B" Right (HP side)
Rib: Avoid 2ribs from left
Carriage Assembly
[Thickness Gauge]
Rib: Avoid 1 rib at right end
*Put the gauge on a flat face *Align the center of gauge and the ribs
"ROLLER, ASSEMBLY, PF"
"PAPER GUIDE, FRONT;B"
Figure 4-1. Paper Gap Adjustment - Thickness Gauge Setting
Position Mark
Forward (Gap: Wider)
Backward (Gap: Narrower)
Side Frame
"BUSH, PARALLEL ADJUST, RIGHT"
"LEVER, PG"
Figure 4-2. Paper Gap Adjustment - Adjustment Procedure
Overlap = 0.5mm or more
Printhead (Nose face) "CLEANER, HEAD"
Figure 4-3. "CLEANER, HEAD" Overlap
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EPSON Stylus Color 600 Service Manual
4.2.2 Adjustment using Adjustment Program
Since the characteristic of printer mechanism and its components are varying, every printer mechanism are checked and it's own characteristic information is stored in EEPROM of the main control board as a compensation parameter for the mechanism control. Therefore, if the combination of printer mechanism and the main control board is changed, the printer should be adjusted using the adjustment program in order to maintain optimum performance of the printer.
4.2.2.1 Overview of Adjustment Program
This adjustment program is developed specifically for this printer and the basic operation with this adjustment program is illustrated in figure below.
Main Menu (Item Selection)
Initial Ink Charge
Head VH voltage ID writing.
Head Angle Adjustment
Bi-D Adjustment
Performance of Initial ink charge process
Input of appointed VH voltge ID
*Pattern printing *Confirmation/ Mechanism Adjustment
*Pattern printing *Confirmation/ Input of correct values
Figure 4-4. Adjustment Program Flow
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Chapter 4 Adjustment
4.2.2.2 Ink Charge Operation
If either of the following service is made, internal ink paths of the printhead unit is completely empty. Therefore, a brand-new ink cartridge must be installed and all ink paths must be charged with fresh ink by performing the following operation to ensure proper printing operation.
Replacing the printer mechanism Replacing the printhead unit
CAUTION
Since this operation consumes large amount of ink, do not perform it unnecessarily: *Black: Approx. 8.8% of the ink charged in the cartridge *Color: Approx. 16.2% of the ink charged in the cartridge (CMY total)
1. Re-assemble the printer after replacing the component. (It is enough that, at least, the printer mechanism, the electrical circuits and the control panel are connected.) 2. Connect the PC to the printer and turn the printer on. Then, unpack a brand-new ink cartridges and install them on to the printer. 3. Execute "GWBASIC.EXE" in the floppy diskette and load the adjustment program "J90C00E". 4. Run the program and press ENTER key twice to skip date and time input. 5. At the menu [SCREEN-1], input the number corresponding to your market and press ENTER key. 6. At the menu [SCREEN-2], input "2" to select "Cartridge" and press ENTER key. 7. Then, at the setting menu [SCREEN-3], input "1" to select "(Production)" mode and press ENTER key. 8. When the main menu [SCREEN-4] appear on the screen, input "2" to select "Ink Charge" and press ENTER key. Then, the printer starts the ink charge operation.
CAUTION
The ink charge operation takes long time to complete. Do not turn off the printer until it stops completely. (The POWER indicator blinks during the operation.)
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[SCREEN-1] ***** (CUSTOMER) ***** 1. 000:EUROPE 2. 010:USA 3. 020: RUSSIAN Select No.?_ STYLUS COLOR 600 J90C00E
[SCREEN-2]
***** INK Jig ***** 1. Jig 2. Cartridge Select No.?_
[SCREEN-3]
***** SETTING MENU ***** 1: (Production) 2: (Outgoing Inspection) 3: 4: 5: 6: Date/Time Jig Customer BI-D Center
J90C00E
[XX-XX-XXXX] [XX:XX:XX] [CT] JI=JIG CT=Cartridge WAIT=80s [010:USA] [0]
JIG: (JIG Maintenance) Select No.? _
[SCREEN-4]
< MAIN MENU for Production > 1. 2. 3. K. 4. VH Setting Ink Charge Angular Adjust Print Angular Adjust Setting Bi-d Adjust
J90C00E
XX-XX-XXXX [Customer :CT : :
XX:XX:XX 010: USA]
P. Printing Inspection (GOS) JIG No. L. Printing Inspection (S/F) M/C No. M. Printing Inspection (Envelope) HEAD VH CL.Cleaning 9. INK Discharge E. Go to SETTING MENU Select No.?_
*1: (Production)
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Chapter 4 Adjustment
4.2.2.3 VH Setting
The piezo-electric element used in each printhead unit has unique electrical characteristic and the electrical characteristic of each printhead is measured at the production and each printhead unit is given with the ID code. Therefore, this ID code is need to be stored in EEPROM on the main board when the following service is made and the printer read this information to compensate the difference of characteristic for printing control and an amount of injected in k is maintained at the specified level.
Replacing the printhead unit Replacing the printer mechanism (the after-service unit comes with the printhead unit installed)
1. When replacing the part mentioned above, take a note of the ID code indicated on the unit as below.
2. 3. 4. 5. 6. 7. 8.
Printhead Unit: Printer mechanism:
Stamped at the side of the unit Indicated on a label attached to the packing box for the after-service unit.
Re-assemble the printer. Connect the PC to the printer and turn on the printer. Execute "GWBASIC.EXE" from the adjustment program diskette and run "J90C00E". Go to the main menu [SCREEN-4]. Input "1" to select "VH Setting" and press ENTER key. At the next menu screen, input "0" as "M/C No." and press ENTER key. Then next menu [SCREEN-5] appear on the screen, and input the ID code which you noted at the beginning of this procedure.
VH ID Code format:
*1 /2 digits (from left) rd *3 digit th th *4 /5 digits
st
nd
=Normal dot VH ID =Drive frequency ID =Micro dot VH ID
9. After inputting the ID code, the program returns to the main menu and you can continue to another adjustments.
WORK POINT
Timing to write the specified value to EEPROM: input.
Upon pressing ENTER key after ID code
Head VH ID
Viewed from front
Figure 4-5. Head VH ID Indication
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EPSON Stylus Color 600 Service Manual
[SCREEN-4] < MAIN MENU for Production > 1. 2. 3. K. 4. VH Setting Ink Charge Angular Adjust Print Angular Adjust Setting Bi-d Adjust J90C00E
XX-XX-XXXX [Customer :CT : :
XX:XX:XX 010: USA]
P. Printing Inspection (GOS) JIG No. L. Printing Inspection (S/F) M/C No. M. Printing Inspection (Envelope) HEAD VH CL.Cleaning 9. INK Discharge E. Go to SETTING MENU Select No.?_
*1: (Production)
[SCREEN-5]
<<<< Head VH Setting >>>> Head VH(5Col ID (ex. 18109 or 18A09)): VH CHECK M/C No. :XXXXX HEAD VH :
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Chapter 4 Adjustment
4.2.2.4 ead Angular Adjustment
The head angular means the angle at which the printhead unit installed on the carriage assembly against the carriage movement direction and the printhead must be parallel with the carriage movement direction so that the lines printed with each nozzle are evenly positioned. Therefore, this adjustment should be made when the following service is made:
Replacing or removing the printhead unit
The head angular actually set by the adjust lever installed on the carriage assembly and the program print the check pattern to see the level of head angular. 1. Before performing this adjustment, be sure to perform "VH Setting" (Refer to section 4.2.2.3) 2. At the main menu [SCREEN-4], input "3" to select "Angular Adjust Print" and press ENTER key. 3. Check to see if the lines printed in MAGENTA color is positioned in the middle of two BLACK lines with the check pattern printed by the program. If the position of MAGENTA lines are incorrect, input "K" at the main menu and the carriage assembly moves to the middle of the printer. Then, loosen a screw (No.3) fixing "FASTNER, HEAD" and shift the position of angular adjust level located at the right bottom of the carriage assembly to either forward (move MAGENTA line to down) or backward (move MAGENTA line to up). 4. After adjusting the position of angular adjust lever, input "3" to print the check pattern and verify the angular level. If the level is still not correct, repeat the step 3. 5. If the level is correct, input "K" again and tighten a screw to fix "FASTNER, HEAD". Then, at the menu [SCREEN-6], input "Y" and press ENTER key to complete the adjustment.
Printed pattern BLACK line MAGENTA line
Shift the lever to: Backward
Printed pattern Shift the lever to: Forward
Angular Adjust Lever (Right bottom of the Carriage Assembly)
Figure 4-6. Head Angular Adjustment
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EPSON Stylus Color 600 Service Manual
< MAIN MENU for Production > 1. 2. 3. K. 4. VH Setting Ink Charge Angular Adjust Print Angular Adjust Setting Bi-d Adjust
[SCREEN-4]
J90C00E
XX-XX-XXXX [Customer :CT : :
XX:XX:XX 010: USA]
P. Printing Inspection (GOS) JIG No. L. Printing Inspection (S/F) M/C No. M. Printing Inspection (Envelope) HEAD VH CL.Cleaning 9. INK Discharge E. Go to SETTING MENU Select No.?_
*1: (Production)
[SCREEN-6]
Push Y Key?_
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Chapter 4 Adjustment
4.2.2.5 Bi-D Alignment Adjustment
This adjustment defines the carriage drive control parameters to compensate the variation in mechanism components characteristic so that the print position become even in bi-directional printing. This adjustment is required when one of the following service is made:
Replacing the printer mechanism Replacing the main board (C200 MAIN) Replacing the CR Motor assembly Replacing the carriage assembly and related components
The values defined with this adjustment are stored in EEPROM on the main board. 1. If the printer mechanism is replaced, the ink charge operation and the VH Setting operation should be performed prior to this adjustment. (Refer to section 4.2.2.2 and 4.2.2.3) 2. Connect the PC to the printer and turn on the printer. 3. Go to the main menu [SCREEN-4]. 4. Input "4" to select "Bi-d Adjust" and press ENTER key. 5. The program prints the check pattern (one with the compensation value="0" and another two patterns each printed with the value "-2" and "+2"). Select the number of the pattern with which the printed lines are most properly aligned, and input the number and press ENTER key at the menu [SCREEN-7]. Then, the program print the sample pattern with the compensation value you have selected. If all patterns printed by the program are completely mis-aligned, confirm the inclination of misalignment with the pattern printed with the value "0" by checking the relative position of the EVEN line to the ODD line:
If EVEN line is shifted to RIGHT = If EVEN line is shifted to LEFT =
Requires (-) value Requires (+) value
Then, once input "Y" and press ENTER key to return to the main menu, and input "E" to select "Go to SETTING MENU" and press ENTER key. At the setting menu screen [SCREEN-3], input "6" to select "BI-D Center" and input the approximation number that corresponding to the inclination of misalignment you have confirmed previously. After changing the reference value for the Bi-D alignment check printing, input "1" to select "(Production)" and back to the main menu and continue for the Bi-D alignment adjustment. 6. If the alignment is correct, input the pattern number at the menu [SCREEN-7] and after completing the sample pattern printing, input "Y" and press ENTER key to define the compensation value.
WORK POINT
Timing to write the specified value to EEPROM:
[Printed pattern]
Upon pressing ENTER key after input "Y".
Input (-) value
Input (+) value
Figure 4-7.Bi-D Alignment
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EPSON Stylus Color 600 Service Manual
[SCREEN-4] < MAIN MENU for Production > 1. 2. 3. K. 4. VH Setting Ink Charge Angular Adjust Print Angular Adjust Setting Bi-d Adjust J90C00E
XX-XX-XXXX [Customer :CT : :
XX:XX:XX 010: USA]
P. Printing Inspection (GOS) JIG No. L. Printing Inspection (S/F) M/C No. M. Printing Inspection (Envelope) HEAD VH CL.Cleaning 9. INK Discharge E. Go to SETTING MENU Select No.?_
*1: (Production)
[SCREEN-7] INPUT ADJUST No. (IF OK INPUT Y) ?_ ADJUST AREA (-30 to 30)
[SCREEN-3]
***** SETTING MENU ***** 1: (Production) 2: (Outgoing Inspection) 3: 4: 5: 6: Date/Time Jig Customer BI-D Center
J90C00E
[XX-XX-XXXX] [XX:XX:XX] [CT] JI=JIG CT=Cartridge WAIT=80s [010:USA] [0]
JIG: (JIG Maintenance) Select No.? _
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Rev. A