Disassemblyand Reassembly - Sharp ER-04RP Service Manual

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ER-04RP
10. Disassembly and reassembly
Observe the following precautions in maintenance.
PRECAUTIONS
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
When the printer is operating satisfactorily, do not try to
disassemble, reassemble, or adjust the printer mechanism
without proper reasons. Exerdse particular care not to loosen
the mounting screws on each part by accident.
After finishing inspection, always check the parts before
power-on to confirm that there is no abnormality.
Never try to print without paper and ribbon loaded in the
printer.
Check that the paper is loaded properly.
Care must be taken in maintenance so that parts, screws
used for maintenance will not be ieft in the printer.
When handiing printed circuit boards, avoid using gloves that
tend to generate static electricity.
Do not piace printed circuit boards directiy on the printer or
the fioor.
in disassembly and reassembly, check the ieads and cords
for damage and avoid such wiring as to cause strain to them.
10-1. List of maintenance tools
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Phiiiips screwdriver (iarge size) for 3mm size
Normai screwdriver (smaii size)
Tweezers
Beit tension gauge (diai tension gauge) 10Og
Scaie
Soidering pencii
Long-nose piiers
Thickness gauge (0.5, 0.6mm)
Lubricating pen
Screw iock paint
Osciiioscope
10-2. Disassembly process
Disassemble and reassemble the printer in accordance with the fol-
iowing disassembly procedure.
1. CC (coior change) coii SA
(lo-3-1)
2. Ribbon piate BK
(10-3-2)
L
3. Printhead SA (lo-3-3)
J
4. PF (paper feed) coii SA
(lo-3-4)
5. Drive gear
(lo-3-5)
J
6. CC (coior change) iever
(10-3-6)
L
7. Detent iever
(lo-3-7)
8. Carrier biock
(10-3-8)
9. Platen BK
(lo-3-9)
L
10. PF (paper feed) biock
(lo-3-lo)
L
11. Paper pressure roller (10-3-11)
12. RP (reset puise) sensor SA (10-3-12)
13. Connector PCB SA (10-3-13)
L
14. Motor BK (10-3-14)
15. Ribbon feed biock (10-3-15)
16. Timing beit SA (10-3-16)
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