Kenwood RDX-652 Service Manual page 7

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4. Main microprocessor M30622MC-526FP (X13:IC1)
4-1 Microprocessor periphery block diagram
CD MECHA
X14(IC51)
DOT DRIVER
X14(IC52,53)
LED DRIVER x 2
X13(IC7)
DSP/DAC IC
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L 13942296513
X13(IC10)
DOLBY PROLOGIC IC
4-2 VOLTAGE KEY MATRIX
INPUT VOLTAGE
(V)
0.00~0.26
0.27~0.81
0.82~1.37
1.38~1.94
1.95~2.51
2.52~3.07
3.08~3.62
3.63~4.16
4.17~4.73
4.74~5.00
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CIRCUIT DESCRIPTION
X28(IC1)
DECK PLAY/REC EQ IC
X13(IC1)
X13(IC3)
KEY1
(HEX) Pin97
00H~0DH DISC SKIP
0EH~29H DISC2
2AH~46H CD STOP
47H~63H OPEN/CLOSE
64H~80H A/B
81H~9DH FWD PLAY
9EH~B9H RVS PLAY
BA~D5H DOLBY(T.EQ.)
D5~F2H NO KEY
F3H~FFH KEY OFF
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RXD-652/702/752/772S/852/A81/A601/A701
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MAIN U-COM
M30622MC–526FP
Q Q
3 6 7 1 3
KEY2
Pin95
BAND
EX. BASS (SW)
ENTER
RWD
FF
PLAY/PAUSE
DISC1
POWER
MENU
KEY OFF
.
2 9 9 4 2 8
DECK MECHA
X13(IC2)
AUDIO CONTROL IC
X13(A1:IC2)
PLL IC
X28(IC4)
EXPANDER IC
1 5 0 5 8 2 9 9 4
X13(IC14)
DECK PORT DRIVER
KEY3
Pin94
TUNING
DISP./DEMO
INPUT
SELECT
RVS. MODE
TAPE STOP
REC
DISC3
BACK
KEY OFF
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9 9
2 8 9 9
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