Denon UTP-250 - Microprocessor Documentation; Microprocessor Functions Overview; Microprocessor Pin Description (HD404729 FS)

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TUNER PRE SECTION
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LCD
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MICROPROCESSOR
DOCUMENTATION
Part No.: 3934142002 (8234JP) HD404729FS_ Part No.: 2621624106
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@LCD Pin Configuration Pin configuration definitions (segment side) 1. Overview
COMI COM2 The functions of this microcomputer are made up of the following four pillars.
$1 All A4 K (MONO) a. Tuner Functions
$2 Ald A3 $32 N (MHz) * These functions perform the required control for the reception of FM and AM broadcasts.
$3 | ag Az $33 L (DIRECT) b. Auto Functions
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ne
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eo
AKER)
:
Eesieoned
=
the
heart
ot
the
system
stereo,
the
auto
functions
perform
serial
communications
with
other
components
(such
as
the
deck,
CD,
“sé |. Age ceeds Ba. $36 | G20" Gi ee and amplifier) to provide overall control.
$7 B8 B2 $37 G6 * These functions decode the signals from the remote control and send them to each component of the system.
$8 B7 Bl $38 H 3 c. Timer Functions
ee
Bs
B6
$39
Q
()
P
te
*
Counts
the
clock
of
the
24-hour
display.
[S10
1
BIL
ae
fg
SAO
HE
oo
ea
key
Ler
+
Provi
F
sans
Ci C4 Ai H6 Hi Byouides 2 types of timer operation: once and sleep.
cu C3 s42 | S (OFF) R (ON) d. Display Function
cy
C2
$43
H4
H5
*
Outputs
the
control
signal
of
the
LCD.
C8 cil $44 V (TIMER) U (MUTE) Note 1: When buttons “ENTER/NEXT” and “MEMORY” of the wiring diagram are pressed simultaneously and the power cord is inserted into
15 | CT LE 6 S45 WO) Xx (SLEEP) the power outlet, the frequencies used for the tracking adjustment will automatically be registered in the preset memory as indicated
C13 C10 B (FM) Y (AUTO OFF) bel
D2 C5 nt elow.
L
(STEREO)
D1
Use
this
information
for
tuning
and
other
procedures.
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F7 F2 B. Common side
F6
Fl
COM1
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87.50
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ars eee
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FS
acs
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p26
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P27
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at
ee
P30
G (MEMO) H (TUNED)
F (PM) J (AUTO)
D (AM) E (MW)
2. Receiving Band Table
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Pin Connection
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