Sony ZS-M35 Service Manual page 37

• MAIN BOARD IC401 CXP740096-044Q (SYSTEM CONTROL)
Pin No. Pin Name
1 NC
2 MEGA BASS
3 LINE-LEVEL
4 AU-CS
5 AU-DATA
6 AU-CLK
7 RDS-DATA
8 NC
9 RDS-CLK
10 TU-MUTE
11 TU-CE
12 TU-DATA
13 TU-CLK
14 TU-COUNT
15 CD-DOOR
16 NC
17 – 21 KEY S4 – S0
22 LED-CHARA-KAN
23 LED-123
24 LED-456
25 LED-789
26 LED-0
27 LED-CHARA-ABC
28 NC
29 LED-CLOCK
30 LED-HISPEED
31 RA-POWER
32 NC
33 FL-CTR
34 PA-STANDBY
35 LINE-MUTE
36 KEY-C2
37 KEY-C1
38 FL-DIM
39 TU-SFT
40 RST
41 VSS
42 XTAL
43 EXTAL
44 FL-RST
45 FL-CS
46 FL-DATA
47 FL-CLK
48 SELECT-GND
49 SELECT
50 NC
I/O
— Not used
O MEGA BASS on/off control signal output
O Line in level control signal output
O Chip select signal output to the electrical volume (IC301)
O Serial data output to the electrical volume (IC301)
O Serial data transfer clock signal output to the electrical volume (IC301)
I RDS serial data input from the RDS decoder
— Not used
I RDS serial data transfer clock signal input from the RDS decoder
O Muting on/off control signal output for the tuner signal
O PLL serial chip enable signal output to the tuner PLL IC (IC2)
O PLL serial data output to the tuner PLL IC (IC2)
O PLL serial data transfer clock signal output to the tuner PLL IC (IC2)
I PLL serial data input from the tuner PLL IC (IC2)
I Detection signal input from the CD lid open/close detect switch (S402)
— Not used
I Key input terminal
O LED (LED board D609) on/off drive signal output
O LED (LED board D610-613) on/off drive signal output
O LED (LED board D607,615-617) on/off drive signal output
O LED (LED board D618-621) on/off drive signal output
O LED (LED board D622-625) on/off drive signal output
O LED (LED board D608) on/off drive signal output
— Not used
O LED (LED board D602-614) on/off drive signal output
O LED (LED board D601) on/off drive signal output
O RA7V power supply on/off control signal output
— Not used
O FL-BU3.3V power supply on/off control signal output
O Power amplifier on/off control signal output
O LINE input muting on/off control signal output
O Not used
O Not used
O Control signal output for the brightness of fluorescent tube display
O Frequency shift of the main system clock control terminal
I System reset signal input from the reset signal generator (IC403)
— Ground terminal
I Main system clock input terminal (8 MHz)
O Main system clock input terminal (8 MHz)
O Reset signal output to the fluorescent tube display drive IC (IC601)
O Chip enable signal output to the fluorescent tube display drive IC (IC601)
O Serial data output to the fluorescent tube display drive IC (IC601)
O Serial data transfer clock signal output to the fluorescent tube display drive IC (IC601)
I/O Destination setting terminal
I Destination setting terminal
— Not used
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Pin Description
"L": MEGA BASS on
"L": normal, "H": high
(Not used)
"H": muting on
"H": power off "H": standby, "L": power on
Fixed at "H" in this set
(Not used)
"L": reset