Kenwood HM-531, Руководство по обслуживанию

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RXD-M51/M51MD
5
CIRCUIT DESCRIPTION
1. Initialization
1-1 Setting of initial conditions
While pressing the [SET] key, plug the AC power cord
into an AC power outlet.
1-2 Initializing operation
• A microcomputer is initialized for start when the AC
power is turned on while pressing the [SET] key. At
that time, CD mechanism, MD mechanism and CAS-
SETTE mechanism are also initialized.
• During the initial operation, the display shows “ INITIAL-
IZE
”
and after that the clock blinks up on display.
1-3 Initial items and back up data
1-4 Mechanism initialization
1-4-1 CD mechanism
• If a mechanism error occurs, “ C ” is indicated on the
display.
1-4-2 MD mechanism
• The MD ON code is input within 4 seconds after turned
the power port on, the MD initial code (D122H) is out-
put.
If the MD on code is not input, the error indication is
displayed as "M" on the display.
1-4-3 CASSETTE mechanism
• If a mechanism error occurs, "X" is indicated on the dis-
play.
ch
Destination
K2 E2 E1/H
1 FM 97.50MHz FM 97.50MHz FM 97.50MHz
2 FM 108.00MHz FM 108.00MHz FM 108.00MHz
3 AM 630kHz AM 630kHz AM 630kHz
4 AM 1000kHz AM 999kHz AM 999kHz
5 AM 1440kHz AM 1440kHz AM 1440kHz
6 AM 1610kHz AM 1602kHz AM 1602kHz
7 FM 87.50MHz FM 87.50MHz FM 87.50MHz
8 FM 87.50MHz FM 87.50MHz FM 87.50MHz
9 FM 87.50MHz FM 87.50MHz FM 87.50MHz
10 FM 89.10MHz FM 89.10MHz FM 89.10MHz
11 FM 87.50MHz FM 87.50MHz FM 87.50MHz
12 FM 90.00MHz FM 90.00MHz FM 90.00MHz
13 FM 106.00MHz FM 106.00MHz FM 106.00MHz
14 AM 530kHz AM 531kHz AM 531kHz
15 FM 87.50MHz FM 87.50MHz FM 87.50MHz
16 FM 98.00MHz FM 98.00MHz FM 98.00MHz
17 FM 98.50MHz FM 98.50MHz FM 98.50MHz
18 FM 87.50MHz FM 87.50MHz FM 87.50MHz
19 AM 990kHz AM 990kHz AM 990kHz
20 FM 97.40MHz FM 97.40MHz FM 97.40MHz
21 FM 87.50MHz FM 87.50MHz FM 87.50MHz
22 FM 87.50MHz FM 87.50MHz FM 87.50MHz
23 FM 87.50MHz FM 87.50MHz FM 87.50MHz
24 FM 87.50MHz FM 87.50MHz FM 87.50MHz
25 FM 87.50MHz FM 87.50MHz FM 87.50MHz
26 FM 87.50MHz FM 87.50MHz FM 87.50MHz
27 FM 87.50MHz FM 87.50MHz FM 87.50MHz
28 FM 87.50MHz FM 87.50MHz FM 87.50MHz
29 FM 87.50MHz FM 87.50MHz FM 87.50MHz
30 FM 87.50MHz FM 87.50MHz FM 87.50MHz
31 FM 87.50MHz FM 87.50MHz FM 87.50MHz
32 FM 87.50MHz FM 87.50MHz FM 87.50MHz
33 FM 87.50MHz FM 87.50MHz FM 87.50MHz
34 FM 87.50MHz FM 87.50MHz FM 87.50MHz
35 FM 87.50MHz FM 87.50MHz FM 87.50MHz
36 FM 87.50MHz FM 87.50MHz FM 87.50MHz
37 FM 87.50MHz FM 87.50MHz FM 87.50MHz
38 FM 87.50MHz FM 87.50MHz FML 74.00MHz
39 FM 87.50MHz FM 87.50MHz FML 65.00MHz
40 FM 87.50MHz FM 87.50MHz FML 69.00MHz
2. TUNER preset frequency
ITEMS
POWER OFF
VOLUME 15
BALANCE CENTER
LOUDNESS OFF
AMP EX. BASS ON
INPUT SEL TUNER
AUX INPUT 0 (-6dB)
BASS 0
TREBLE 0
BAND FM
LAST f LIMIT
TUNER LAST Pch
AUTO/MONO
AUTO
Pch TEST f
CLOCK AM 12 : 00
PROG ON AM 12 : 00
CLOCK PROG OFF AM 12 : 00
TIMER PRO MODE PLAY
SOURCE TUNER
Pch 1
EXE OFF
OTT OFF
SLEEP OFF
PLAY MODE TRACK
REPEAT OFF
CD RANDOM OFF
PLAY MODE STOP
TIME SINGLE
DIRECTION FORWARD
DECK RVS MODE
p
DOLBY NR OFF
OPERATION MODE STOP
back up data
4. Main microprocessor M30622MA-174FP (X09 : IC205)
4-1 Microprocessor periphery block diagram
4-2 Key matrix
Vref = 5V ( ) of KEY : RXD-M51
Desti-
U-COM Discrimination
Receiving frequency Channel PORT
nation
Desti-
DSW4 DSW3 DSW2
Band range space
IF RF
92
nation
K, P K1 0 0 0
FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 0
AM 530kHz~1700kHz 10kHz +450kHz 10kHz 0
M, Y K2 0 1 1
FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 1
AM 530kHz~1610kHz 10kHz +450kHz 10kHz 0
J J 0 0
FM 76.0MHz~108.0MHz 100kHz -10.7MHz 25kHz 0
AM 531kHz~1629kHz 9kHz +450kHz 9kHz 0
Q
FMH 87.5MHz~108.0MHz 50kHz +10.7MHz 10kHz 0
Q
RDS
1 0 FML 65.0MHz~74.0MHz 10kHz +10.7MHz 10kHz 0
AM 531kHz~1602kHz 9kHz +450kHz 9kHz 0
E, T
E1
1 1 0
FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz 0
RDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz 0
3. Destination list of TUNER
(DSW4=50pin, DSW3=49pin, DSW2=48pin)
0=(input low) 1=(input high)
GC-E6003
X09,
IC203
X14, IC1
X14
Q1~6
X09
IC4
X09
IC1
X09, IC2
X09
A301
X09
IC206
E TYPE
ONLY
X09
IC205
CD mechanism
Mechanism
control
circuit
Mechanism
control
circuit
Auto reverse
cassette
mechanism
Head amp
Dolby B
CXD2587Q
CD-DSP
TUNER
PLL IC
LC72131M
AUDIO
AMP SYSTEM IC
(LC75396)
MD
MDM-98A
LED
X14 ED1
FL
CM1740M
Key matrix
encoder
remocon
RDS
demodu-
lator
DOT driver
LC75710NED
LED driver
M30622MA-174FP
u-COM
VOLTAGE
[V]
RXD-M51MD(K)
COVER1,1P(
98.12.10
19:11
y[W
10