Head Gap Adjustment (Black and Color Head)
The head gap printing alignment adjustment is required when the printer mechanism, C172 MAIN
board, or printhead (board) is replaced or disassembled. This adjustment sets the head drive timing
between the black head and the color head. If the adjustment is not made, vertical alignment is not
completed. Make the adjustment using the program and set the Adjustment mode to Pattern 5 and
Pattern 6 using the control panel. (See page 1-22.)
1. Connect a PC to the target printer via port LPT1 using a parallel interface cable, and turn the
printer on.
2. Load GW-BASIC on the PC and run the program ST1500.BAS. Then the main menu appears,
as shown below:
Customer Data
Printer Setting [********]
3. Using Table 4-3, input the appropriate 8-digit ID number for the destination as the printer
setting for “Customer Data.” (For example, the U.S. market, or EAI: 20000A00 ). Then the
main menu appears, as shown below.
Stylus 1500
Customer Data <********> 95/**/**
<< Menu 1 >> <<Menu 2>>
Head Data Writing --------------
----------------- --------------
Black Head Angle Adj. END
Uni-D Adj. Destination Data Writing only
Bi-D Adj. Initial Ink Charging
Color Head Angle Adj. Black - Color HV Adj.
Head Gap Adj.
--------------
Select:<Up> or <Down> Go:<SPACE> or <ENTER> Change menu:<1> or <2>
4. Move the cursor to “Head Gap Adj.” to perform the black - color head vertical adjustment
operation by pressing 1, 2, ↑, and ↓.
5. Press SPACE and ENTER to enter the adjustment mode. The adjustment selection menu
appears, as shown below.
Head Gap Adjustment
360 DPI Adjustment Mode ...... 1
720 DPI Adjustment Mode ...... 2
END ...... ENTER
SELECT No.
6. Enter 1 or 2 to select the print resolution. Then the printer outputs an adjustment pattern, as
shown below.
Black
Black
Magenta
Figure 4-17. Head Gap Adjustment Pattern
Adjustments
EPSON Stylus 1500 Service Manual 4-25
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