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ANSWER: Since it is a thermal printer it does not have a ribbon to replace.
Description: The
Seiko SII DPU 414 thermal Printer. For a compact desktop or portable
thermal printer, the DPU-414 is an excellent selection. It incorporates
the STP printer mechanism to ensure silent and high-quality printing of
characters and high-density graphics. And in quadruple-density bit image
mode, 640-dot (maximum) CRT display hardcopy is possible (with
horizontal vs. vertical radio of 1:1).
Product Specifications
Model DPU-414-30B
Printing Method Thermal serial dot printing
Number of dots/line 9 x 320
Paper width (mm) 112
Printing width (mm) 89.6
Max Speed (character/sec) 52.5
Paper path Curved
Character matrix (H x W dots) 9 x 7
Character size(H x W mm) 2.5 x 1.9, 2.5 x 0.9 (Condensed)
Number of columns 40, 80(Condensed)
Character type Extend Graphics Character set, Alphanumeric, International Characters, Katakana Character set
Interface Parallel (36pins Amphenol), Serial (9pins D-SUB)
Input buffer 28Kbytes
Command ESC/P * conformity
Cutting Tear bar
Operating Temperature (°C) 0 to 40
Humidity (%RH) 30 to 80(Non condensing)
Service life (line) 500,000 **
Dimensions (W x D x H mm) 160.0 x 170.0 x 66.5 (printer unit only) ***
Wow, serial communications still in use. Naturally, both units have to use the exact same protocol N81 for instance, so make certain the sending unit is set to the same, then check the cable to verify that the appropriate pins are connected and or crossed. I believe your symptoms can be caused by using hardware handshake and having pins 6,8,20 (20 only if a 25pin connector) shorted on the printer end. If possible, you can try switching both devices to software handshake.
horizontal or vertical characters missing???
if your missing horizontal lines, look at where the print is missing if you see imprints... u have bad ribbons.
if your missing vertical characters down the page
Power off the printer & unplug from wall
Remove with phillips the top right cover. u will see that the control panel has a plastic clip needs to be pressed in for the control panel to come loose from the top right cover.
Then you will see P703 Hammerbank Ribbon Cable and P704 Hammerbank Ribbon Cable swap these 2 cables on the Engine Controller Board part# 083368.
IF your missing characters move to another place on the printout then u will need to replace part# 083368.
IF your missing characters are still in the same place, then you will need to replace hammer module part# 081152, their is qty 11 of the individual 081152 about 1 inch wide. this will save $$$ ordering and replace 081152 if you have some at your work semi technical.
Be very careful with hands when powering the printer with the top right cover off Electrically and mechanically. Need more help you may call Toby at x311
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