QUANZHOU WOUXUN KG-619, Руководство по обслуживанию

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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-619
Version: KG-619-0806-V1 Page 10 of 31
Circuit Circuit Circuit
Circuit
Description Description Description
Description
② ② ②
②
O O O
O
rdinarily rdinarily rdinarily
rdinarily
set set set
set
board( board( board(
board(
Without Without Without
Without
s s s
s
crambler crambler crambler
crambler
s s s
s
et et et
et
) ) )
)
Voice frequency signal will pass through the 8
th
pin of the line seat directly, and return to
the CPU from the 7
th
pin of line seat by volume potentiometer, and drive the SPK after
amplified by audio frequency power amplifier integration IC3.
(
(
(
(
4
4
4
4
)
)
)
)
Circuit
Circuit
Circuit
Circuit
description
description
description
description
about
about
about
about
the
the
the
the
voice
voice
voice
voice
prompt
prompt
prompt
prompt
This transceiver has two kinds of the voice prompt, one is signal beep prompt
(BP)
which
sounded from the CPU, the other is the voice prompt which provided by voice chip.
① ① ①
①
The
The
The
The
voice
voice
voice
voice
prompt
prompt
prompt
prompt
that
that
that
that
provided
provided
provided
provided
by
by
by
by
voice
voice
voice
voice
chip
chip
chip
chip
The 7
th
pin is voice frequency output port.
The 6
th
pin is voice chip oscillate port.
②
Signal
Signal
Signal
Signal
beep
beep
beep
beep
prompt(BP)
prompt(BP)
prompt(BP)
prompt(BP)
which
which
which
which
sounded
sounded
sounded
sounded
from
from
from
from
the
the
the
the
CPU
CPU
CPU
CPU
The signal will pass through C445, R451, Q421 and be controlled by BP-MUTE, then the
output signal will pass through Volume/Power Switch to voice frequency amplifier and drive
loudspeaker.
(5)
(5)
(5)
(5)
VCO
VCO
VCO
VCO
s
s
s
s
chematic
chematic
chematic
chematic