Epson PX-8 - Page 261

REV.-A
6.3.4 Installing The Wires
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Fig. 6-5 Installing the Wire
• Wind the wire onto the lead wire (pin of IC) from 3/4 to 1 full turn.
• The
wire must be covered to near the land. The bare portion of the wire must be less than 1/2
of the land.
•
When the lead wire(s) has to be long, secure it on the board with an epoxy adhesive.
< Impossibility of repair>
If the problems listed below occur, the quali-
ty and durability of the parts cannot be gua-
ranteed.
It is therefore recommended that the
board be replaced in the following instances.
• The
copper foil in the through hole has
come off.
• The land has
come off.
• The
print pattern has come off.
• The board has been burned.
• The board is cracked.
England drawing
< Treatment after the repair>
After repairing (soldering) the parts, treat them
according to the following procedure.
• Remove all
the flux from the soldered por-
tion with a brush etc.
• Clean
the patterns which you have touched.
• Clean
the connectors, and apply contact re-
covery agent,
if necessary.
• Dry
the parts.
* If the parts are not treated as explained
above,
the patterns will oxidize and corrode.
Terms
~
~~nd
j/ Through hole
.....
------------Print pattern
The lead
wires of parts are put into the through holes
shown in the figure at left.
Fig. 6-6 Surface of Board
6-6