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KRF-V7020D/V8020D/VR-307/309/357
8
CIRCUIT DESCRIPTION
FL DISPLAY (X09) ED51
11GRID
17SEGMENT
X8
X3
X3
X4
X3
X3
X2
X2
X2
(X09) S517
SERIAL
BUSY
DATA
VOLUME
ENCODER
(X09) S519
MULTI
ENCODER
(X09) S518
SELECTOR
ENCODER
(X09)
X4
X1
X3
X3
8.0MHz
CE
RESET
X3
X1
X3
AUDIO MUTE
TUNER MUTE
TUNER (X05) IC2
(X05) IC1
-20dB ATT
SD
STEREO
X1
11-MT-120GK
LED
(PEAK. LEVEL)
(DOLBY DIGITAL)
(STANDBY)
(X09) IC6,7
AUDIO SELECTOR
(X09) IC51
(X08) IC4,16,17
NJM2279M
(X09) A501
REMOCON
VIDEO SELECTOR IC
TC9163/9164
CXP82852-139Q
(X00) POWER Relay - (K1)
SP. A RELAY - (K1)
SP. B RELAY - (K2)
SURR RELAY - (K3)
CENTER RELAY - (K4)
(X08) IC1
DSP IC
(X08) IC2
DIR, ADC, DAC
YSS902 or
YSS912
CS4226KQG
(CRYSTAL)
(X08) IC5
FUNCTION SW
(X08) IC11
VOLUME IC
M62446FP
LC72131
TC9162
12
KR0
13
KR1
14
KR2
81
KS0
P.CH DOWN
ON/STANDBY
SPEAKER A
80
KS1
P.CH UP
DIMMER
SPEAKER B
79
KS2
BAND
LISTEN MODE
DOLBY VIRTUAL
78
KS3
AUTO
SOUND
MONITOR
77
KS4
MEMORY
SETUP
SOURCE DIRECT
76
KS5
INPUT MODE
75
KS6
DSW0
DSW1
DSW2
74
KS7
* No. of : u -COM Port NO.
DSW3
DSW (AC3)
Key matrix
4. Microprocessor CXP82852-139Q(X09 : IC51)
4-1 Microprocessor periphery block diagram