Sony HCD-F250AV / MHC-F250AV Service Manual ▷ View online
— 79 —
Pin No.
Pin Name
I/O
Function
Note) Supply the same potential to each power supply pin (VDD, VVDD, LVDD, RVDD, XVDD).
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
O
O
O
I
I
—
O
—
O
—
—
O
—
O
—
O
I
—
O
O
O
O
I
O
O
I
O
I
I
I
O
O
O
I
I
I
Deemphasis monitor
The deemphasis disc is being played back when “H”
C2 flag output
Digital OUT output (EIAJ format)
Test input
Incorporates a pull-down resistor
Be sure to connect to 0V
Test input
Incorporates a pull-down resistor
Be sure to connect to 0V
Not used
Be sure to use it in an open state
L channel 1-bit DAC
L channel mute output
L channel 1-bit DAC
L channel power supply
L channel 1-bit DAC
L channel output
L channel 1-bit DAC
L channel ground
Be sure to connect to 0V
R channel 1-bit DAC
R channel ground
Be sure to connect to 0V
R channel 1-bit DAC
R channel output
R channel 1-bit DAC
R channel power supply
R channel 1-bit DAC
R channel mute output
Power supply for the crystal oscillator
Connected to the 16.9344 MHz crystal oscillator
Ground for the crystal oscillator
Be sure to connect to 0V
Sync signal output for the subcode block
C1, C2, single correction, and double correction monitor
Subcode P, Q, R, S, T, U, W output
Subcode frame sync signal output
Rises when the subcode is in a standby
Subcode read clock input
Schmidt input (Connect to 0V when not in use)
7.35 kHz sync signal output divided from the crystal oscillation
Subcode Q output standby output
Read/write control input
Schmidt input
Subcode Q output
Command input from the microprocessor
Command input fetching clock input or subcode extracting clock input from SQOUT Schmidt
input
LC78622 reset input
Temporarily set to “L” when the power is turned ON
Test output
Use it in an open state (Normally, “L” output)
16.9344 MHz output
4.2336 MHz output
Test input. Incorporates a pull-down resistor. Be sure to connect to 0V
Chip select input
Incorporates a pull-down resistor
Be sure to connect to 0V when not in control
Test input
Does not incorporates a pull-down resistor
Be sure to connect to 0V
EMPH
C2F
DOUT
TEST3
TEST4
NC
MUTEL
LVDD
LCHO
LVSS
RVSS
RCHO
RVDD
MUTER
XVDD
XOUT
XIN
XVSS
SBSY
EFLG
PW
SFSY
SBCK
FSX
WRQ
RWC
SQOUT
COIN
CQCK
RES
TEST11
16M
4.2M
TEST5
CS
TEST1
— 80 —
Pin No.
1
2
3
4
5
6 to 13
14 to 28
29
30
31
32
33
34, 35
36
37
38 to 41
42
43 to 46
47
48
49
50
51 to 53
54
55
56
57
58
59
60
61 to 63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Pin Name
—
ICSW
—
HHOUT
—
D0 to D7
A0 to A14
/WE
RESET
10MHz
10MHz
VSS
—
AVSS
AVREF
—
D-SENS
—
SLED-P
CLK
SUBQ
DATA
—
FOK
WRQ
—
TGL
RWC
SLED-M
—
TSENS1 to TSENS3
DQSY
TCLK
TDATA
TMODE
—
DOORSW
OUTSW
INSW
VDD
—
TBLR
TBLL
LODOUT
LODIN
IICCLK
—
IICDAT
I/O
—
O
—
O
—
I/O
O
O
I
O
I
—
—
—
I
—
I
—
O
O
I
O
—
I
I
—
I
O
O
—
I
I
O
I
O
—
I
I
I
—
—
O
O
O
O
I
—
I/O
Function
Not used
IC reset signal output
Not used
Plus one LED signal output
Not used
SRAM data I/O
SRAM address output
SRAM write enable output
Reset signal input
X’tal(10MHz)
X’tal(10MHz)
Ground
Not used
Analog ground
Analog refernce voltage input
Not used
Disc detect sensor signal input
Not used
Sled motor control signal output
Clock signal output for LC78622E
CD sub-code input from LC78622E
Command output for LC78622E
Not used
DRF(FOK) signal input from LC78622E
Sub-code synchronizing signal input from LC78622E
Not used
Tracking gain control signal input from LC78622E
RWC(latch) output for LC78622E
Sled motor control output
Not used
Table sensor input
Data synchronizing signal input from decoder
Clock output for decoder
Data input from decoder
System down signal output for decoder
Not used
Front cover close detect input
Loading motor out detect input
Loading motor in detect input
Power supply(+5V)
Not used
Table motor clock wise turn signal output
Table motor counter clock wise turn signal output
Loading motor out direction signal output
Loading motor in direction signal output
Serial data clock input
Not used
Serial data I/O
MAIN BOARD IC401 CXP84632-031Q
— 81 —
MAIN BOARD IC501 uPD780016AYGF-011-3BA
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
41
42
43
44
45
46
47
48
49
50
Pin Name
LINE-MUTE
DBFB-H/L
442-LT
—
POWER
F-RELAY
R-RELAY
PL-RELAY
VSS
X2
X1
VDD
XT2
XT1
RESET
AC-CUT
CAPM-CNT1P
SCOR
SOFT-TEST
CAPM-CNT2P
RDS-INT
RDS-DATA
VDD
AVREF
ADJ
A-SHUT
B-SHUT
B-HALF
—
SPEC-IN
AMS-IN
—
AVSS
SQ-DATA-IN
—
SQ-CLK
SW-ON/OFF
SW-MODE
—
VSS
VOL-LAT
PL-LAT
COM-DIN
COM-DOUT
COM-CLK
CD-POWER
CD-DATA
CD CLK
PL-CLK
PL-DATA
I/O
O
O
O
—
O
O
O
O
—
O
I
—
O
I
I
I
I
O
O
I
I
I
—
I
I
I
I
I
—
I
I
—
—
I
—
I
O
O
—
—
O
O
I
O
O
O
O
O
O
O
Function
Line mute signal output
DBFB H/L select signal output
Latch signal output for IC101(M62442FP)
Not used
Power control signal output
Main speaker relay control signal output
Surround speaker relay control signal output(Not used)
Surround speaker relay control signal output
Ground
X’tal(5MHz)
X’tal(5MHz)
Power supply(+5V)
X’tal(32.768kHz)
X’tal(32.768kHz)
Reset signal input
AC check input
Capstan motor control 1(+) signal output
Subcode data request signal output(Not used)
Software test port
Capstan motor control 2(+) signal output(Not used)
Sirial data transfer clock input
Serial data input
Power supply(+5V)
Analog reference voltage input
CD adjust point port
Deck-A reel pulse detector
Deck-B reel pulse detector
Half detector signal input
Not used
Versin select signal input
AMS signal input
Not used
Analog ground
Sub code Q data input(Not used)
Not used
Sub code Q data clock input(Not used)
Super woofer ON/OFF control output(Not used)
Super woofer mode control output(Not used)
Not used
Ground
Latch signal 2 output for IC201(LV1041M)
Latch signal 1 output for IC201(LV1041M)
Common serial data input(Not used)
Common serial data output(Not used)
Common serial clock output(Not used)
CD power ON/OFF control output
CD data output(Not used)
CD clock output(Not used)
Clock signal output for IC201(LV1041M)
Data signal output for IC201(LV1041M)
— 82 —
Pin No.
Pin Name
I/O
Function
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
442-CLK
442-DATA
CENTER-MUTE
-
IIC-DATA
IIC-CLK
XRST
XLT
FOCUS-SW
TBL-L
TBL-R
-
LOAD-OUT
LOAD-IN
ST-CLK
ST-DIN
ST-DOUT
ST-CE
TUNED
STEREO
VSS
ST-MUTE
SENS2
SENS
DISC-SENS
T-SENS
CAPM-CNT2P
ENC3
ENC2
ENC1
OUT-OPEN
CAP-M-H/L
B-TRG
A-TRG
CAPM-CNT1M
CAPM-CNT2M
TC-MUTE
R/PB/PAS
NR-ON/OFF
REC-MUTE
CLOCK-OUT
BIAS
EQ-H/N
PB-A/B
A-PLAY-SW
B-PLAY-SW
TC-RELAY
A-HALF
ALC
STK-MUTE
O
O
O
-
O
O
O
O
O
O
O
-
O
O
O
I
O
O
I
I
-
O
I
I
I
I
O
I
I
I
I
O
O
O
O
O
O
I
O
O
O
O
O
O
I
I
O
I
O
O
Clock signal output for IC101(M62442FP)
Data signal output for IC101(M62442FP)
Center speaker mute signal output
Not used
Serial data output
Serial data clock output
CD reset signal output(Not used)
CD latch signal output(Not used)
Focus switching signal output(Not used)
Table motor control signal output(Not used)
Table motor control signal output(Not used)
Not used
Loading motor control signal output(Not used)
Loading motor control signal output(Not used)
Tuner clock output
Tuner data input
Tuner data output
Tuner chip enable output
Tuned detection for tuner
Stereo detection for tuner
Ground
Tuner mute signal output
BD condition signal input(Not used)
BD condition signal input(Not used)
CD detection signal input(Not used)
CD table detection signal input(Not used)
Capstan motor control 2(+) signal output(Not used)
Disctray address detect encoder input(Not used)
Disctray address detect encoder input(Not used)
Disctray address detect encoder input(Not used)
Out switch signal input(Not used)
Capstan motor High/Nomal speed select signal output(Not used)
B-deck trigger motor control signal output
A-deck trigger motor control signal output
Capstan motor control 1(-) signal output
Capstan motor control 2(-) signal output
TC mute control signal output
REC/PB/PASS selection output
NR ON/OFF signal output
REC mute signal output
Clock check output
Bias control signal output
Equalizer High/Normal control output
PB deck A/B select output
Deck A play detect input
Deck B play detect input
Relay control output
Deck A cassette detect input
ALC control output
Power amp mute signal output
Click on the first or last page to see other HCD-F250AV / MHC-F250AV service manuals if exist.