Technics SA-DV290EE, Руководство по обслуживанию

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9. Schematic Diagram
10. Printed Circuit Board Diagram
11. Block Diagram
12. Wiring Connection Diagram
13. Terminal Function of ICs
13.1. IC901 (C2BBFD000404): System Control/FL Drive
Pin
No.
Terminal
Name
I/O Function
1 CHECK I Clock check signal input
2 LC72 DO O PLL data signal output for
tuner unit (Z101)
3 LC72 CE O Chip enable signal output
for tuner unit (Z101)
4 LC72 DI/
ST
I IF count data/stereo detect
signal input from tuner unit
(Z101)
5 LC72 CK O Clock signal output for
tuner unit (Z101)
6 ST/
AV.6CH
O Signal select output
7 NC — Not used, open
8
9
SEL
TUNER
— Not used, open
10 SEL/
TUNER
— Not used, connected to GND
11 AC IN I Power failure detect signal
input
12 RESET I Reset signal input
13 X IN I Oscillator connected
terminal (32.7kHz)
14 X OUT O
15 V
SS
— GND terminal
16 XC IN I Oscillator connected
terminal (6 MHz)
17 XC OUT O
18 V
DD
1 I Power supply terminal
19 KEY TU I Operation key signal input
20 KEY
KARAOKE
I Operation key signal input
18