Technics SC-CH570 Service Manual

@ Function of IC Terminals
© 1C701 (M37471M4650F)
Terminal
Name
N.C,
Function
Not used
Terminal
Name
| _ RS-CH770
Function
Not used
DATA IN
Serial data input
AC power source detect signal input
LED-DATA
ao
Serial data signal output for LED drive IC
TPS signal input
LED-CLK
Serial clock signa! output for LED drive IC
Test mode select signal input
SPEED2
DECK 2 motor speed control signal output
DECK 1 mechanism switch signal input
(Mode)
SPEED1
DECK 1 motor speed control signal output
— | Not used
KEY 1,2
Operation switch signal input
Serial data signal output for audio IC
PHOTO1-S
DECK 1 supply side reel pulse input
Serial clock signal output for audio IC
PHOTO1-T
DECK 1 take-up side reel pulse input
Serial latch signal output for audio !C
PHOTO2-S
PHOTO2-T
ATS2
VREF
DECK 2 supply side reel pulse input
DECK 2 mechanism switch signal input (Half,
Mode, F, REC INH., R. REC INH.)
DECK 2 take-up side reel pulse input
DECK 2 mechanism switch signal input
(NORMAL/CrO2/METAL)
Reference voltage input terminal for A/D
converter (+5 V)
Not used
DECK 2 solenoid drive signal output
38
oe MOTOR2 DECK 2 motor drive signa! output
40,41} MIC2, 1 Not used
DOLBY NR record/play mode select signal
output
DOLBY NR ON/OFF control signal output
Not used
Clock signal input
Muting control signal output
Clock signal output
PL1
DECK 1 solenoid drive signa! output
Not used
MOTOR1
DECK 1 motor drive signal output
Connect to GND
Not used
GND terminal
4
Power supply (+5 V)
Not used
GND terminal
Not used
DECK 1 mechanism switch signal input (Half)
Serial communication request signal input
Serial communication complete sigral output
DECK 1 mechanism switch signal input
(NORMAL/CrO2)
—
Serial communication clock signal output
— | Not used
Reset signal input
ey
Serial communication data signal output
Not used

Technics SC-CH570 Specifications

General

Brand	Technics
Model	SC-CH570
Category	Stereo System
Language	English