Repair Ano Maintenance - Radio Shack TRS-80 Service Manual

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1. Handling Precautions
1} Carrying Printer
4. REPAIR AND MAINTENANCE
Color
Changing
Gear
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Carry the printer by holding it in the directions shown by{!. Carrying the printer in the
if
direction will cause
various · t roubles.
2 The prir1ter may be carried by holding on t o the upper face of the mo<Or cover and paper guide. However, do not
apply strong pres.<ure to
it.
21 Sections Where Pressure Should Not
be
Applied:
1 Do not touch the slider unit except when taking a pe. n out. Particularly, never apply pressure in the direclion of
rotation.
2 Do not · t ouch the wue. The puUey may come off,
3 Do not touch the color changing click. When bent , color changing cannol be accomplished.
3)
Sections not to
be Touched
1 No shaft should be touched with bare hands.
2 Do not touch t11e pen return spring.
3
Do not touch the rotary holder except when the slider is positioned at the right edge of the frame and a pen is
mounted.
4
Do not ·1ouch the slider
4)
Sections
where Magnetic Substances Should be Kept Away
1 Do not place a magne1ic substance or powder, a permanent magnet, or an electromagnet close 10 the permanent
magnet of the color position detector.
2 A
strong rare
earth magnet is used in the electromagnet unit.
5)
Other
Be very careful not to drop the pen or in any way joint it . When the ink is exhausted, hold by the tail plug section and
shake it.
2. Maintenance
Cleaning
Clean the printer and remove paper dust, dist, etc. perfodically (afte r using or mostly every three months.)
Points for Cleaning
I Paper dust, d i:rt, dust, etc. should be vaecumed up. (Use an electric vacuum cleaner).
2 Use alcohoJ o r benzene when removing stains. Thinner, ttichloroethylene and ketone solvent may damage the plastic
parts, so do not use.
3 Grease any places where there is no grease or where
it
is not sufficient. Do not
use a lubricant
except the one specified.
(Refer to Oiling Standard section)
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