Kenwood KRC-949D Service Manual page 13

®@ Description of terminals
CIRCUIT DESCRIPTION
Description of application
Communicaiton request from SLAVE microprocessor.
Serial data transmission clock using serial clock.
Data output for electronic VOL. to SLAVE microprocessor.
=D
Data input from SLAVE microprocessor.
ACC SW
TUNER POWER
po oe a Sa
CD POWER
F/R
Segment signal Sg.
Segment signal Sf.
olojoj—-|—-|-|-|-JoJo]-
Segment signal Se.
}-—4
Segment signal Sd.
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Segment signal Sc.
Segment signal Sb.
fo) ame
Segment signal Sa.
Key scan signal to pin 10 of BCD DECODER (TC4028BF).
Key scan signal to pin 13 of BCD DECODER (TC4028BF).
Key scan signal to pin 12 of BCD DECODER (TC4028BF).
Key return signal KO.
-|-|-|O/O;O
ITIL jILILILTlTILTILI/LITI/LTITIT/T|TIcT\|T
+
B
Ww
vu
a fo)
me)
o O}O|-
73 "I ot
(@)
a
Oo. Nn
Key return signal K1.
Key return signal K2.