Sony CDP-XE270 Service Manual page 24

CDP-XE270/XE370
DISPLAY BOARD IC501 CXP82324-093Q
(SYSTEM CONTROLLER, FLUORESCENT INDICATOR TUBE DRIVER, KEY CONTROL)
Pin No. Pin Name
1
NC
2 RMIN
3
NC
4 to 6 NC
7
LDON/RW/OFF
8 CLK
9 SENS
10 DATA
11 SQCK
12 SQSO
13, 14
NC
15 XLAT
16 to 19
NC
20 LDOUT
21 LDIN
22, 23 NC
24 KEY0
25 KEY1
26 KEY2
27 NC
ADJ/AFADJ/BD
28
TEST
29 IN/OUT SW
30 RST
31
EXTAL
32
XTAL
33 VSS
34 to 41 NC
42 to 47 S6 to S1
S7, S11, S12, S8,
48 to 55
S21, S10, S9, S20
56 to 62 S13 to S19
63 to 67 7G to 3G
68 NC
69, 70 2G, 1G
71 VFDP (–30V)
72 VDD (+5V)
*1 Loading motor (M151) control
Operation
Terminal
LDIN (pin wa)
LDOUT (pin w;)
24
I/O
I Connected to the ground
I Remote control signal input from the remote control receiver (IC561)
I Connected to the ground
O Not used (open)
O CD-ROM/RW selection signal output "L": CD-ROM, "H": CD-RW
O Serial data transfer clock signal output to the CXD2587Q (IC101)
I Internal status (SENSE) signal input from the CXD2587Q (IC101)
O Serial data output to the CXD2587Q (IC101)
O Subcode Q data reading clock signal output to the CXD2587Q (IC101)
I Subcode Q data signal input from the CXD2587Q (IC101)
O Not used (open)
O Serial data latch pulse signal output to the CXD2587Q (IC101)
O Not used (open)
O Loading motor (M151) drive signal output to the BA6956AN (IC631) "H" active *1
O Loading motor (M151) drive signal output to the BA6956AN (IC631) "H" active *1
O Not used (open)
Key input terminal (A/D input)
I
S501 to S504 (TIME, PLAY MODE, CLEAR, REPEAT) keys input
Key input terminal (A/D input) S520 (1/2) (l AMS L) keys input
I
Key input terminal (A/D input) S520 (2/2) to S524, S526, S527
I
(l AMS L PUSH ENTER, A OPEN/CLOSE, H, X, x, M, m) keys input
O Not used (open)
Setting terminal for the test mode
I
"L": ADJ test mode, "M": AFADJ test mode, "H": BD test mode
Loading in detect switch (S152) and loading out detect switch (S151) input terminal
I
"L": load in, "H": load out
System reset signal input from the reset signal generator (IC603) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I Main system clock input terminal (4 MHz)
O Main system clock output terminal (4 MHz)
— Ground terminal
O Not used (open)
O
Segment drive signal output to the fluorescent indicator tube (FL501)
O
Segment drive signal output to the fluorescent indicator tube (FL501)
O
Segment drive signal output to the fluorescent indicator tube (FL501)
O Grid drive signal output to the fluorescent indicator tube (FL501)
O Not used (open)
O
Grid drive signal output to the fluorescent indicator tube (FL501)
— Power supply terminal (–30V) (for fluorescent indicator tube drive)
— Power supply terminal (+5V)
OFF OUT
"L" "L" "H"
"L" "H" "L"
Description
IN BRAKE
"H"
"H"