Sony CFD-Z125 - Cd Radio Cassette-corder, Service Manual

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6-9. IC PIN FUNCTION DESCRIPTION
•
CD DECODER BOARD IC801 LC5876-1J64
(SYSTEM CONTROL)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
I/O
O
O
—
—
I
I
I
O
O
I
I
I
I
I
I
I
I
I
O
I
—
—
—
—
I
O
I
I
I
I
I
I
I
I
I
I
I
I
O
O
Description
Common drive signal output to the liquid crystal display (LCD801)
Common drive signal output to the liquid crystal display (LCD801)
Connected to coupling capacitor for the liquid crystal display (LCD 801) of power supply
Connected to coupling capacitor for the liquid crystal display (LCD 801) of power supply
Rest signal input from the reset signal generator (IC802) “L”: reset For several hundreds msec.
after the power supply rises, “L” is input, then it changes to “H”
Remote control signal input from the remote control receiver (SEN851) “L” active Used for CFD-Z135
only (CFD-Z125 is not used)
Sub-code Q data signal input from the CXD2508Q (IC702)
Serial data output to the CXD2508Q (IC702)
Sub-code Q data reading clock signal and serial data transfer clock signal output to the CXD2580Q (IC702)
Track number count signal input terminal. Not used (fixed at “H”)
Sub-code sync (S0+S1) detection signal input from the CXD2508Q (IC702)
Internal status (SENSE) signal input from the CXD2508Q (IC702)
Guard frame sync signal input from the CXD2508Q (IC702) “ L”: NG, “H”: OK
Focus OK signal input from the CXA1782BQ (IC701) “L”: NG, “H”: OK
Detection signal input of the tape direction “L”: REV, “H”: FWD Not used
Stereo detection signal input from the CXA1238S (IC1) “L”: stereo
Detection signal input from the REC switch (S302) “H”: REC
Wake-up signal input terminal “H”: AC input, “L”: using for the dry battery
Sub system clock output terminal (32.768kHz) (for clock)
Sub system clock input terminal (32.768kHz) (for clock)
Power supply terminal (Connected to coupling capacitor)
Power supply terminal (Connected to coupling capacitor)
Ground terminal
Power supply terminal (+5V)
Main system clock input terminal (4MHz)
Main system clock output terminal (4MHz)
Key return signal input terminal (“L” active) *1
Not used (fixed at “H”)
Not used (fixed at “H”)
Detection signal input from the CD lid open/close detect switch (S702). The CD lid is closed when “L”
LED drive signal output to the CD indicator (LD352) “L”: CD, “H”: others function. Not used
LED drive signal output to the TAPE indicator (LD351) “L”: others function, “H”: TAPE. Not used
Pin Name
COM 2
COM 1
CUP 1
CUP2
RESET
REM IN
SQSO
DATA
SQCK, CLOCK
COUNT
SCOR
SENS
GFS
FOK
TAPE DIRECTION
STEREO IN
SYNC REC IN
WP IN
(REG CHECK)
XT OUT
XT IN
VDD 2
VDD 1
VSS
VDD
CF IN
CF OUT
KEY IN 1
KEY IN 2
KEY IN 3
KEY IN 4
KEY IN 5
KEY IN 6
KEY IN 7
KEY IN 8
KEY IN9
M2
M3
CD SW
CD
TAPE
Pin No.
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60 to 78
79
80
I/O
O
O
—
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Description
Power on/off control signal output for the tuner circuit power supply “L”: others function, “H”: RADIO.
Not used
Back light on/off control signal output terminal “H”: back light on. Not used
Ground terminal
Power on/off control signal output for the main power supply “H”: power on
Audio mute on/off control signal output terminal “H”: mute on
Mega bass 1 control signal output terminal “H”: on Not used (open). Not used
Mega bass 2 control signal output terminal “H”: on Not used (open). Not used
Surround on/off control signal output terminal “H”: on. Not used
Serial data transfer clock signal output to the M62429 (IC302)
Serial data output to the M62429 (IC302)
Chip enable signal output to the M62429 (IC302) “L”: address, “H”: data. Not used
Serial latch pulse signal output to the CXD2508Q (IC702) “H”: active
Reset signal output to the CXA1782BQ (IC701) and CXD2508Q (IC702) “L”: reset
Mute on/off control signal output to the CXD2508Q (IC702) “H”: mute on
Not used (open)
Key scan signal output terminal (“L” active) *1
Not used (open)
Segment drive signal output to the liquid crystal display (LCD801). (Pins 76, 77 are not used)
Common drive signal output to the liquid crystal display (LCD801)
Common drive signal output to the liquid crystal display (LCD801)
Pin Name
AUDIO LED
BACK LIGHT
VSS
POWER SW OUT
SYSTEM MUTE
OUT
FUNCTION SW A
FUNCTION SW B
SURROUND
CLK OUT
DATA OUT
CE OUT
XLAT
XRST
MUTE
—
KEY SCAN OUT 1
KEY SCAN OUT 2
KEY SCAN OUT 3
—
SEG 17 to SEG 1
COM 4
COM3
— 47 — — 48 —
KEY IN 1 (pin
@¶
)
KEY IN 2 (pin
@•
)
KEY IN 3 (pin
@ª
)
KEY IN 4 (pin
#º
)
KEY IN 5 (pin
#¡
)
KEY IN 6 (pin
#™
)
KEY IN 7 (pin
#£
)
KEY IN 8 (pin
#¢
)
KEY IN 9 (pin
#∞
)
KEY SCAN OUT 1
(pin
%§
)
POWER
CD
TAPE
RADIO
MEGA BASS
(Not used)
fl
π
±
TIME SET +
KEY SCAN OUT 2
(pin
%¶
)
SLEEP
CLOCK
TIMER
STANDBY
SURROND
(Not used)
MEGA BASS
(Not used)
VOLUME –
PLAY MODE
DISPLAY/ENTER
≠
TIME SET –
KEY SCAN OUT 3
(pin
%•
)
—
—
—
—
Mode-1
Mode-2
Mode-3
—
Mode-4
*1 KEY MATRIX TABLE
Mode No. Function SHORT OPEN
Mode-1 TEST MODE TEST MODE NORMAL MODE
Mode-2 SURROND Provided Not provided
Mode-3 AUTO REVERSE Provided Not provided
Mode-4
TIME DISPLAY
12H 24H
SYSTEM
In this set
Open
Open
Open
12H