Technics SU-X920D Service Manual page 22

eIlC601
Function Description
Bus data signal out
B. CLK
8: BASS
pel Super bass control signal output
PWM
Volume control signal output
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aa Bus data signal input
Bus clock signal input
Rotary encoder (VR601) signal input
(Volume control)
Muting control signal output
Muting control signal output for VFR
recording
Data signal! output
Clock signal output
+5V
The serial data inputted in to 1C201 is
latched by the STB pulse and the
switch is set to ON according to data
LED control signal output
Clock output for C604
Player control signal output
Power supply detect signal input
#1C805
Function Description
Clock signal input
Clock signal output
Master clock input
NC
LR clock input
Serial data input
Bit clock input
GND
SU-X902
Function Description
input
Key scan signal input
Pull down voltage detect signal input
Input select control signal output
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FL drive signal output
LED control signal output
oO Super bass control signal output
URR. D fom Surround control signal output
SEL2
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