![background image](http://html.mh-extra.com/html/sony/lbt-lx7/lbt-lx7_service-manual_1329856051.webp)
HCD-LX7/LX8
50
50
• PANEL FL section
• PANEL VR section
6-29. IC BLOCK DIAGRAMS
• MAIN (1/3) section
2
1
3
4
6
5
9
10
CTLC
VOUT
7
8
MUTE
LOGIC
CTLC
IN3
VCC
IN4
IN1
CTLA
CTLB
IN2
75
Ω
8db
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
2X0
X2
VDD
X1
XCOM
X0
X3
A
B
VSS
VEE
INH
2X1
2X3
2XCOM
2X2
13
DATA
CLK
STB
CLR
VDD
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P15
GND
GND
18
6
SO
P16
10
12
11
P13
P14
14
15
16
24
17
19
20
21
22
23
1
2
3
4
5
7
8
9
CONTROL
LATCH
SHIFT REGISTER
2
3
14
1
f04
13 f05
12 f06
11 REC
LEVEL
10 VCC
15 f03
5
REC
NF
6
REC
IN
7
RESET
C
8
BIAS
C
9
GND1
4
16 f02
17 f01
18 RESET
R02
P01
LINE
NF
LINE
IN
REFFERENCE
CURRENT
BPF
DET
BPF
DET
BPF
DET
BPF
DET
DET
RESET
Bias
REFFERENCE
CURRENT
DET
DET
BPF
BPF
6-30. IC PIN FUNCTIONS
• MAIN BOARD IC501 MAIN CONTROL (M306622 MA-A26FP)
Pin No.
Pin Name
I/O
Function
1
POWER
O
Power amp ON/OFF signal output
2
POWER
O
Power ON/OFF signal output
3
F-RELAY
O
Front speaker relay control output
4
REAR-RELAY
O
Rear speaker relay control output (Not used)
5
CD-POWER
O
CD power on signal output
6
LINE-MUTE
O
Line mute signal output
7
DBFB-H/L
O
DBFB H/L select signal output
8
–
–
Connected to ground
9
–
–
Connected to ground
10
XC-IN
I
11
XC-OUT
O
12
RESET
I
System reset signal input
13
X-OUT
O
X’tal (16MHz) (MAIN SYSTEM CLOCK)
14
VSS
–
Ground
15
X-IN
I
X’tal (16MHz) (MAIN SYSTEM CLOCK)
16
VDD
–
Power supply (+5V)
17
NMI
I
Not used
18
WAKE UP
I
WAKE UP signal input
19
SCOR
I
CD Q-data request signal input
20
RDS-INT
I
RDS data interrupt input
21
RDS-DATA
I
RDS data interrupt input
22
AC-CUT
I
AC cut ON (L)/OFF (H) check
23
PL-CLK
O
Clock output to pro-logic (Not used)
24
PL-DATA
O
Data output to pro-logic (Not used)
25
PL-LAT
O
Latch signal output to pro-logic (Not used)
26
TIMER LED
O
Not used
27
PROTECT
I
Speaker protect signal input
28
V MUTE
O
Video mute signal output
29
IIC-CLK
O
I
2
C SCL
30
IIC-DATA
O
I
2
C SDA
31
–
–
Not used
32
SQ-DATA
I
Subcode Q data clock input (CD data)
33
SQ-CLK
I
Subcode Q data clock input (CD data clock)
34
SW-MODE
O
SW-MODE music/movie select signal output
35
CD-DATA
O
CD data output
36
H/P IN
I
Head phone detect
37
CD-CLK
O
CD clock output
38
493-LAT
O
Latch signal output for IC101 (M62493FP)
39
CLOCK-OUT
O
Clock out signal check
40
NO-USE
–
Not used
41
NO-USE
–
Not used
42
FL OFF
O
Fluorescent indicator tube filament on/off signal output
43
STBY RELAY
O
Main POWER on/off signal output
44
BASS FREQ
O
FREQ high/low signal output (Not used)
45
FUNC SEL 1
O
Function select signal output
46
FUNC SEL 0
O
Function select signal output
47
493-DATA
O
Data signal output for IC101 (M62493FP)
48
493-CLK
O
Clock signal output for IC101 (M62493FP)
49
ST-MUTE
O
Tuner mute signal output
X’tal (32.768 KHz) (SUB CLOCK)
Summary of Contents for LBT-LX7
Page 32: ...HCD LX7 LX8 31 31 6 8 SCHEMATIC DIAGRAM MAIN 3 3 SECTION See page 28 for Printed Wiring Board ...
Page 33: ...HCD LX7 LX8 32 32 6 9 SCHEMATIC DIAGRAM DECK SECTION Page 30 ...
Page 35: ...HCD LX7 LX8 34 34 6 11 SCHEMATIC DIAGRAM POWER SECTION ...
Page 39: ...HCD LX7 LX8 38 38 6 15 SCHEMATIC DIAGRAM PANEL VR SECTION See page 50 for IC Block Diagrams ...
Page 41: ...HCD LX7 LX8 40 40 6 17 SCHEMATIC DIAGRAM TC PANEL SECTION ...
Page 43: ...HCD LX7 LX8 42 42 6 19 SCHEMATIC DIAGRAM CD PANEL SECTION ...
Page 45: ...HCD LX7 LX8 44 44 6 21 SCHEMATIC DIAGRAM CD MOTOR SECTION Page 30 ...
Page 47: ...HCD LX7 LX8 46 46 6 23 SCHEMATIC DIAGRAM TRANS SECTION LX7 model ...
Page 49: ...HCD LX7 LX8 48 48 6 25 SCHEMATIC DIAGRAM TRANS SECTION LX8 model ...