Kenwood R-SG7 Service Manual page 5

6. Microprocessor : uPD78045FGF071(X09-IC11)
6-1 Microprocessor periphery block diagram
RESET
CE
REMOCON
LEVEL IN
CLASS A LED
BIAS MID
BIAS HI
LOW RELAY
HI RELAY
SPEAKER RELAY
X09,J4
SERIAL DATA
BUSY
X09,S516
VOLUME
ROTARY ENCODER
ENC-A
ENC-B
Key matrix
b
signifies pin number of microprocessor.
KR0 KR1
60
KS0 DSW1(D519)
64
KS1 POWER AUTO/MONO
63
KS2 62 N.B. CIRCUIT INPUT SEL.
KS3 pure A ENTER
61
CIRCUIT DESCRIPTION
X09,ED1
FL DISPLAY(FIP9GM6R)
IC11
uPD78045FGF071
2
KR2
59 58
DSW2(D518)
BAND
TUNING UP
TUNING DOWN
R-SG7/SG7G
KEY MATRIX
FL GRID
4 3
9 16
(u-COM)
3 X05,IC2
PLL IC
(LC72131)
1
X09,IC1
3
SELECTOR ANALOG
SW CONTROL IC
(NJU7313AM)
X09,IC3
2
E.VOL.IC
(M62421SP)
SD
STEREO
HEADPHONES
PROTECTION
A MUTE
T MUTE
H.P. MUTE
ATT
A CLASS ON
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