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051.SB822.DOC
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1993-04-19
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33 lines
SB-822
TR-2400 Battery Charger Failure 4-22-80
The stock charger (W09-0307-05) supplied with the TR-2400 may be rapaired
and/or tested as necessary.
Open circuit, the charger should deliver 18-20V. Current when charging
sould be 45mA.
Contained in the charger, in series with the output is a 120 ohm 1/2 watt
current limiting resistor. Under normal use (including momentary short
circuit test) this part should not fail.
If you receive a charger with no output, the unit may be opened by
fracturing the glued seam by a sharp moderate hammer blow. Place the
charger on its side ofon a hard, flat surface. A layer of cloth at top and
bottom will protect the case from marring. Strike the seam first on one
side, and then the other. The case should open in two pieces.
Replace the 120 ohm 1/2 W resistor with a 1 W resistor. After replacing
and before closing the unit, perform voltage and current checks. A spot
of glue or cement at each corner will reseal the charger.
JEB/yn
(c) 42280TKC
Downloaded From P-80 International Information Systems 304-744-2253