Kenwood KA-7090R Service Manual page 7

KA-7090R
CIRCUIT DESCRIPTION
6. Microprocessor periphery block diagram
(K's KAF-7002,5002)
(KA-7090R)
POWER ON x 1
AUDIO MUTE x 1
HEAD PHONE x 1
— SERIAL x2
DATA, BUSY
r- MOTORVOL x2
UP/DOWN
L
AD x3
KEY INPUT
SP SW INPUT (ROTARY SW)
INPUT INPUT (ROTARY SW)
SELECTORIC x3 (K's)
DATA, CLOCK, BUSY
TC9162 (FUNCTION SW)
TC9164 (REC OUT SW)
SELECTOR IC x 5 (KA-7090R)
- DATA, CLOCK
- BUSY (TC916X)
- CLR, STB(NJU3711)
TC9162 (FUNCTION SW)
TC9164 (REC OUT SW)
NJU3711(INPUT SEL SW)
LED DISPLAY x13
SELECTOR LED
/RELAY CONTROL x6
REC OUT LED x 1
A.T.T. LED x1
ON/STANDBY LED x 1
LOUDNESS LED x 1
S. DIRECT LED x 1
SP RELAY x 2
(KA-7090R)
LED DISPLAY x 14
SELECTOR LED x 6
MD/MONITOR LED x 1
MUTE LED x 1
ON/STANDBY LED x 1
LOUDNESS LED x 1
DIRECT LED x 2
SP RELAY x 2
(K's)
(K's KAF-7002,5002)
DIRECT ENCODER x2
REMOCON x1
PROTECTION x1
RESET x1
CE x1
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DESTINATION x2
COMPO/K's DISCRIMINATION
8/16 bit CHANGE OVER(KA-7090R)
DESTINATION x2
COMPOKK's DISCRIMINATION
KAF-7002/5002 DISCRIMINATION
(K's)