3-1
3.1 HANDLING
3.1.1 Handling Precautions
Storage precautions
• Avoid storing the printer in a dusty, humid, or excessive
low temperature area. Also avoid areas which are
exposed to direct sunlight for long periods of time.
• For long-term storage, put the printer in a polyethylene
bag with anti-rust paper (VCI paper), and keep it in a dry
place.
Use precautions
•
Always install a ribbon cassette and load paper before
printing. If paper runs out, be sure to load new paper
before resuming printing.
If printing is executed when there is no paper or no
ribbon cassette in the printer, the print quality may
deteriorate (the printing color may become uneven or
some dots may not be printed) because of damage to the
surface of the platen, printing wires, or ribbon.
•
Do not touch the print head unit after printing. It becomes
very hot during printing.
•
There is a set screw for the frame ground (FG). Use it for
grounding the printer.
•
Be careful when wiring and connecting the interface,
power, drawer kick-out, and customer display cables to
avoid subjecting the connectors to excessive pressure.
Paper handling precautions
•
Use only paper that meets the paper specifications in
this manual. (Refer to Section 1.2.3,
Paper specifica-
tions.)
If paper does not meet the specifications, the print
quality may deteriorate; problems in loading paper or
paper jams may occur; or the ribbon may catch on the
paper or the ink may stain the paper.
Ribbon cassette handling precautions
•
Use only the ribbon cassette specified in this manual.
(Refer to Section 1.2.7,
Ribbon cassette.)
If another ribbon cassette is used, the print quality may
deteriorate, the life of the printer may be shortened, ink
may leak, or the ribbon may be caught on a print head
pin.
•
Do not reink a ribbon.
If a ribbon is reinked, the print quality could deteriorate
due to a malfunction of the print wires or the ink may leak.
CONFIDENTIAL
Summary of Contents for U375 - TM B/W Dot-matrix Printer
Page 2: ...Technical manual TM U375 U375P English 4005791 Copied Date 199 Copied by ...
Page 54: ...2 23 Figure 2 44 Host Interface Circuit and Custor Display Interface Circuit CONFIDENTIAL ...
Page 58: ...2 27 Figure 2 49 Carriage Motor Drive Signal Timing Chart CONFIDENTIAL ...
Page 149: ...6 2 Circuit 1 CONFIDENTIAL ...
Page 150: ...6 3 Circuit 2 CONFIDENTIAL ...
Page 151: ...6 4 Circuit 3 CONFIDENTIAL ...
Page 152: ...6 5 Circuit 4 CONFIDENTIAL ...
Page 153: ...6 6 Circuit 5 CONFIDENTIAL ...
Page 154: ...6 7 Circuit 6 CONFIDENTIAL ...
Page 156: ...6 9 CONFIDENTIAL ...
Page 157: ...6 10 CONFIDENTIAL ...
Page 158: ...6 11 CONFIDENTIAL ...
Page 159: ...6 12 CONFIDENTIAL ...
Page 168: ...7 9 Table 7 5 TM U375P Gate Array Pin Assignment continued CONFIDENTIAL ...
Page 174: ...CONFIDENTIAL ...
Page 175: ...CONFIDENTIAL ...
Page 176: ...7 17 CONFIDENTIAL ...
Page 177: ...7 18 CONFIDENTIAL ...
Page 178: ...7 19 CONFIDENTIAL ...
Page 179: ...7 20 CONFIDENTIAL ...