Sony CDX-434RF - Compact Disc Changer System, Руководство по обслуживанию

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7-12. IC PIN FUNCTION DESCRIPTION
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MAIN BOARD IC201 CXP740056-004R (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Function
1 to 3 NC — Not used (open)
4 AMUTE O Audio line muting on/off control signal output terminal “H”: muting on
5 CDXLT O Serial data latch pulse signal output to the CXD2598Q (IC101)
6 CDDATA O Serial data output to the CXD2598Q (IC101)
7 CDCLK O Serial data transfer clock signal output to the CXD2598Q (IC101)
8 CDON O D/A converter and servo section power supply on/off control signal output “H”: power on
9 ELVON O Mechanism deck section power supply on/off control signal output “H”: power on
10 to 35 NC — Not used (open)
36 LCDON O
The LCD in remote commander and FM transmitter section power supply on/off control signal
output “H”: power on
37 LCDCE O Chip enable signal output to the LCD driver in remote commander
38 RESET I
System reset signal input from the reset switch (SW302) and reset signal generator (IC303)
“L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
39 GND — Ground terminal
40 XTAL O Main system clock output terminal (12 MHz)
41 EXTAL I Main system clock input terminal (12 MHz)
42 TEXTSEL I
CD text on/off setting terminal “L” CD text on
434RF: fixed at “H” (open) 530RF/535RF: fixed at “L”
43 LCDINH O Inhibit signal output to the LCD driver in remote commander
44 LCDDATA O Serial data output to the LCD driver in remote commander
45 LCDCLK O Serial data transfer clock signal output to the LCD driver in remote commander
46 CFSEL I
Custom file on/off setting terminal “L” custom file on
434RF: fixed at “H” (open) 530RF/535RF: fixed at “L”
47 EEINIT I
Initialize signal input for the EEPROM (IC203) “H”: format
434RF: not used (open) 530RF/535RF: fixed at “L”
48 EEDATA I/O Two-way data bus with the EEPROM (IC203) (530RF/535RF only) 434RF: not used (open)
49 EECLK O
Serial data transfer clock signal output to the EEPROM (IC203) (530RF/535RF only)
434RF: not used (open)
50 VSS — Ground terminal (for A/D converter)
51 AVREF I Reference voltage (+5V) input terminal (for A/D converter)
52 VDD — Power supply terminal (+5V) (for A/D converter)
53 SINGLE I
Setting terminal for the single disc/multiple discs mode
“L”: single mode, “H”: multiple discs mode Fixed at “H” in this set (open)
54 LDON O The laser automatic power control on/off signal output “H”: automatic power control on
55 AGCHOLD O RF AGC hold on/off signal output “H”: hold
56 RFAGC I/O RF AGC level control signal output “L (O) ”: off, “I”: 40%, “H (O) ”: 60%
57 H.TEMP I High temperature sensor input terminal Not used (open)
58 KEYIN I Key input terminal (A/D input) from the remote commander
59 EHS I Elevator height position detect input from the RV202 (elevator height sensor) (A/D input)
60 MCK I
Input of signal for the fine adjustment (elevator height (address) adjustment; RV201) of elevator
position (A/D input)
61 NC — Not used (open)
62 ACCIN I Accessory detect signal input terminal “L”: accessory on
63 EJECT I Eject switch (SW301) input terminal “H” active
Pin No. Pin Name I/O Function
64 MAGSW I Magazine in/out detect switch input Not used (open)
65 LOAD1 I
Chucking end detect switch (SW1) input terminal
“L”: When completion of the disc chucking operation
66 LOAD2 I
Save end detect switch (SW2) input terminal
“L”: When completion of the disc save operation
67 to 70 NC — Not used (open)
71 CH.F O
Motor drive signal (save direction) output to the chucking motor drive (IC201)
“L” active *1
72 CH.R O
Motor drive signal (chucking direction) output to the chucking motor drive (IC201)
“L” active *1
73 ELVR O
Motor drive signal (elevator down direction) output to the elevator motor drive (IC301)
“L” active *2
74 ELVF O
Motor drive signal (elevator up direction) output to the elevator motor drive (IC301)
“L” active *2
75 BUCHK I Battery detect signal input terminal “H”: battery on
76 MGLK I Magazine detect switch (SW201) input “L”: magazine is set
77 SQSO O Subcode Q/text serial data output to the CXD2598Q (IC101)
78 NC — Not used (open)
79 SQCK O Subcode Q/text serial data transfer clock signal output to the CXD2598Q (IC101)
80 KEYACK I
Input of acknowledge signal for the key entry
Acknowledge signal is input to accept from the remote commander in the power off status
81 NC — Not used (open)
82 SCOR I Subcode sync (S0+S1) detection signal input from the CXD2598Q (IC101)
83 SIRCS I SIRCS signal input from the remote commander (530RF/535RF only)
84 TEX I Sub system clock input terminal Not used (open)
85 TX O Sub system clock output terminal Not used (open)
86 VSS — Ground terminal
87 VDD — Power supply terminal (+5V)
88 NC — Not used (open)
89 LIMSW I
Sled limit in detect switch (SW3) input terminal
“L”: When the optical pick-up is inner position
90 FOK I Focus OK signal input from the CXD2598Q (IC101) “H” is input when focus is on (“L”: NG)
91 GFS I Guard frame sync signal input from the CXD2598Q (IC101) “L”: NG, “H”: OK
92 SCLK O Serial data transfer clock signal output to the CXD2598Q (IC101)
93 SENS I Internal status signal (sense signal) input from the CXD2598Q (IC101)
94 XRST O System reset signal output to the CXD2598Q (IC101) “L”: reset
95 ADON O Power supply on/off control signal output for the A/D converter “L”: power on
96 PLLCE O Chip enable signal output to the PLL IC (IC781)
97 PLLCLK O Serial data transfer clock signal output to the PLL IC (IC781)
98 PLLDATA O Serial data output to the PLL IC (IC781)
99, 100 NC — Not used (open)