Sony XES-Z50 Service Manual page 63

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CHANGER BOARD IC301 CXP846P48Q-1-004 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 LED
2
3
4 EECLK
5 SINGLE
6 MC
7 MB
8 MA
9 PGR
10
11
12 ELVON
13 CDRST
14 XTLSEL
15 APC
16 DPT
TE
L 13942296513
17 DOE
18 CES
19 HOME
20 PST
21 LOT
22 XWRE
23 XRDE
24 XQOK
25 GRSRST
26 ESPXLT
27 XSOE
28 SDTI
29
30 RESET
31 XTLI
32 XTLO
33 VSS
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34
35 TEX
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I/O
O
LED drive signal output for the eject indicator "L": LED on
— O
Not used (open)
— O Not used (open)
O
Serial data transfer clock signal output to the EEPROM (IC302)
Input terminal for setting CD single mode or CD changer mode
I
"L": CD single mode, "H": CD changer mode (fixed at "H")
Elevator up/down motor (M501) and disc load/save motor (M502) drive signal output to the
O
BA6247FP (IC201) *1
O
Elevator up/down motor (M501) drive signal output to the BA6247FP (IC201) *1
O
Disc load/save motor (M502) drive signal output to the BA6247FP (IC201) *1
O
Plunger drive signal output for the magazine out
M3 O Disc eject motor (M801) drive signal output to the BA6287F (IC801)
M3 O
Disc eject motor (M801) drive signal output to the BA6287F (IC801)
O
Output of power on/off control signal for the CD section main power supply "H": power on
Reset signal output to the D-RAM controller (IC401), digital signal processor (IC501), and
O
digital servo processor (IC601) "L": reset
Output terminal for setting DSP crystal "H": internal clock, "L": external clock
O
Not used (open)
O
Laser diode on/off control signal output to the RF amplifier (IC101) "L": laser on
Detection input from the disc detect sensor (Q702)
I
processing or load/save processing is detected ("L" is input while a disc is fed)
Detection input from the disc detect sensor (Q701)
I
processing or load processing is detected ("L" is input when a disc is above the pickup)
Detection input from the disc chucking completion detect switch (SW701)
I
"L" is input when disc chucking is completed
Detection input from the home/top position detect switch (SW501)
I
"L" is input when elevator is at the home position
I
Detection input from the magazine detect switch (SW804) "L": magazine in
I
Detection input from the liner slide lever position detect switch (SW803) "L": magazine in
O Enable signal output for data writing to the D-RAM controller (IC401)
O
Enable signal output for data reading to the D-RAM controller (IC401)
O
Output of definite subcode Q data to the D-RAM controller (IC401)
O
Reset signal output to the D-RAM controller (IC401) At track jump, "H" is output
O Serial latch signal output to the D-RAM controller (IC401)
O
Enable signal output for data reading to the D-RAM controller (IC401)
I
Serial data input from the D-RAM controller (IC401)
— O
Not used (open)
System reset signal input from the reset signal generator (IC903) and bus interface (IC951) (for
I
SONY bus) "L": reset For several hundreds msec. after the power supply rises, "L" is input,
then it changes to "H"
I
Main system clock input terminal (8 MHz)
O Main system clock output terminal (8 MHz)
—
Ground terminal
TX O
Sub system clock output terminal (32.768 kHz) Not used (open)
x ao
y
I
Sub system clock input terminal (32.768 kHz) Not used (fixed at "L")
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Function
Whether a disc is present at the reset
1 5 0 5 8 2 9 9 4
Whether a disc is present at the reset
m
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9 9
2 8 9 9