Fukuda Denshi HR-800, Service Manual

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Damaged Printhead Criteria
Grid All holizontal lines should be printed.
Focus Criteria
Print
The printed letters should be clearly visible.
Note
If the print is too dark or too light, adjust the printing using the
＋ －
keys of “Thermal Head
Strobe Duration Adjustment”. (If the printing is suitable, this adjustment is not necessary.)
After the adjustment, press the Test Print B key again, and check if the printing is properly
performed.
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