DOWNLOAD Sony CX-LDB75 Service Manual ↓ Size: 7.04 MB | Pages: 71 in PDF or view online for FREE

Name: Sony CX-LDB75
Brand: Sony
SKU: 1370
Rating: 4 (1 reviews)

Model: CX-LDB75
Pages: 71
Size: 7.04 MB
Type: PDF
Document: Service Manual
Brand: Sony
Device: Audio
File: cx-ldb75.pdf
Date: 2018-11-20

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Sony CX-LDB75 Service Manual ▷ View online

45
CX-LDB75
IC301  TC94A34FG-002
33
34
35
36
37
38
39
40
41
42
1
8
43
57
62
58
61
56
63
52
50
47
46
45
44
48
49
25
26
27
28
29
30
31
32
17
18
19
20
21
22
23
24
9
10
11
2
3
4
5
6
7
64
55
53
51
12
13
14
15
16
54
SDO2/
/CS/
/RAS
PO12/
AD15/
/CAS
SDO3/
/OE
TXO
DIT
Bus
Switch
BUCK/
PO11/
AD14
/CCE/
PO10/
AD13
PO9/AD12
PO8/AD11
VDDM
General
Input/
Output
Port
Address Calc.
2sets
Y-
P
ointer
register
C-P
ointer
register
CDP
Control
I/F
Sub Code I/F
X-P
ointer
register
SRMSTB
VDDT
AD10
AD9
AD8
PO7AD7
PO6/AD6
PO5/AD5
YRAM
4k w
ord
CRAM
4k w
ord
ERAM
4k w
ord
x1
2k w
ord
x1
CR
OM
4k w
ord
x9
XRAM
4k w
ord
Timer
Flag
Interrupt
Control
SRAM/DRAM
I/F
SRAM I/F
1k bit
SRAM
X-Bus
Y
-Bus
VCO
Timing
Generator
PRAM
4k w
ord
PR
OM
4k w
ord
x5
40 bit
Instr
uction
Decoder
Pro
gra
m
Control
MCU I/F
register
XO/X1/X2
Y0/Y1/Y2
MX
MY
MZ
MA
C
A0
A1
AX
AY
ALU
A2
A3
round & limit
round & limit
A
udio I/F 
SBSY/
BCKIB
D
ATA
/
SDI1
LRCKIA
BCKIA
SDI0
LRCKO
BCKO
SDO0
VDDT
VSS
/MIACK/
AD16
/MICK
MIDIO
/MILP
/MICS
STANDBY
/RESET
VDDP
PO4/
AD4
PO3/
AD3
PO2/
AD2
PO0/
AD0
VSS
PO1/
AD1
VDD
VSSP
VCOI
VDDX
TEST
60
VSSX
CK
O/
PO13/
AD16
MIMD
59
XI
XO
CKI/CLCK/
IRQ/FI0
VDD
VSS
PIO0/
SDI2/IO0
PIO1/
SDI3/IO1
PIO2/
IO2
PIO3/
IO3
B
US3/FI1/
PIO4/IO4
B
US2/FI2/
PIO5/IO5
B
US1/FI3/
PIO6/IO6
B
US0/
PIO7/IO7
SDO1//WE
SFSY/
LRCKIB
JT
A
G
I/F

46
CX-LDB75
— MAIN Board —
— CONNECTOR Board —
IC601  BD3882FV
40
REC1O
39
REC1N
38
REC2N
37
REC2O
36
INC2
35
INC1
34
INB2
33
INB1
32
INA2
31
INA1
30
RVFIL2
29
RVFIL1
28
OUT1
27
OUT2
26
BAS12
25
BAS11
24
BAS22
23
BAS21
22
MID12
21
MID11
BASS
REAR
VOLUME
REAR
VOLUME
BASS
MIDDLE
18
SI
19
SC
20
VEE
16
MID22
17
VDD
14
YRE22
15
MID21
13
TRE21
11
TRE11
12
TRE12
MIDDLE
TREBLE
TREBLE
8
VOLIN1
9
VOLIN2
10
MGND
FRONT
VOLUME
FRONT
VOLUME
7
PB1O
LOGIC
CONTROL
6
PB2O
5
FGND
4
PB2N
1
PB1N
2
PB1P
3
PB2P
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
IC701, 711, 721  BA6956AN

47
CX-LDB75
• IC Pin Function Description
MAIN BOARD  IC901  M3062CMEN-A08FPU0 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-LCDAT
O
Not used (open)
2
O-LCDSCK
O
Data output to the fluorescent indicator tube
3
O-BASS LED
O
LED (i-Bass/DEMO) control signal output
4
I-RMC
I
Remote control signal input from the remote sensor
5
O-MP3DAT
I/O
Data input/output from/to the MP3 IC
6
I-MP3DAT
I
Data input from the CD unit
7
O-MP3CLK
O
Clock output to the CD unit
8
BYTE
I
Destination setting input terminal
9
FLASH
—
Not used
10
32KHz-IN
I
Oscillaion circuit signal input for the real time clock
11
32KHz-OUT
O
Oscillaion circuit signal output for the real time clock
12
RESET
I
Reset signal input
13
16MHz-OUT
O
Oscillaion circuit signal output for the system main clock
14
VSS1
—
Ground terminal
15
16MHz-IN
I
Oscillaion circuit signal input for the system main clock
16
VDD1
—
Power supply terminal (+3.3 V)
17
MNI
—
Not used
18
RDSCLK
I
Clock signal input from the tuner
19
I-RDS_CLK
I
RDS signal input from the tuner
20
AC-CUT
I
Power down detection signal input
21
O-TUMUT
O
Muting control signal output to the tuner
22
O-PLLCE
O
Latch signal output to the tuner
23
O-PLLDAT
O
Data output to the tuner
24
I-STEREO
I
Stereo detection signal input from the tuner
25
I-PLLDAT
I
Data input from the tuner
26
I-TUNED
I
Tuner tuned status signal input from the tuner
27
O-PLLCLK
O
Clock output to the tuner
28
O-BKLIGHT
O
LED (BACK LIGHT) control signal output
29
O-SCL
—
Not used
30
O-SDA
—
Not used
31
I-USBSW
—
Not used
32
I-MIACK
I
Acknowledge signal input from the MP3 IC
33
I-MP3REQ
I
Request signal input from the MP3 IC
34
O-USBON
I
Not used
35
O-DATA
O
Data output to the CD unit
36
O-XLT
O
Control data latch signal output to the CD unit
37
O-CLOK
O
Clock output to the CD unit
38
O-POWER
O
Main power control signal output
39
I-PROTECT
I
Voltage detection signal input
40
O-LCDRS
O
Clock signal output to the fluorescent indicator tube
41
O-BASS_0
O
Level control signal output for i-Bass
42
O-BASS_1
O
Level control signal output for i-Bass
43
O-PB2
O
Playback selection signal output for the tape deck
44
O-BIAS
O
Bias control signal output to the tape deck
45
O-MP3RST
O
Reset signal output to the MP3 IC
46
O-LCDCD
O
Latch signal output to the fluorescent indicator tube
47
I-MICK
O
Clock output to the MP3 IC
48
O-MILP
O
Latch pulse signal output to the MP3 IC
49
O-MP3STB
O
Strobe signal output to the MP3 IC

48
CX-LDB75
Pin No.
Pin Name
I/O
Description
50
O-FUNC_CLK
O
Clock output to the function IC (IC601)
51
I-PLAY SW
I
PLAY switch signal input from the tape deck
52
O-LCDCS
O
Chip select signal output to the fluorescent indicator tube
53
O-SOL
O
Solenoid control signal output to the tape deck
54
O-MOTOR
O
Motor control signal output to the tape deck
55
O-MUTE
O
Muting control signal output to the power amplifier
56
I-SENS
I
SENS signal input from the CD unit
57
I-XTACN
I
Clock input from the CD unit
58
I-RDSDAT
I
RDS data input from the tuner
59
I-ELV_E2
I
ELV_E2 switch signal input from the CD mechanism
60
O-XRST
O
Reset signal output to the CD unit
61
I-ELV_E1
I
ELV_E1 switch signal input from the CD mechanism
62
VDD2
—
Power supply terminal (+3.3 V)
63
I-ELV_E3
I
ELV_E3 switch signal input from the CD mechanism
64
VSS2
—
Ground terminal
65
O-CD_ON
O
CD power supply control signal output
66
MODEL
—
Power supply terminal
67
I-SLD_E3
I
SLD_E3 switch signal input from the CD mechanism
68
I-SW4
I
SW4 switch signal input from the CD mechanism
69
I-SLD_E1
I
SLD_E1 switch signal input from the CD mechanism
70
O-ELV_POS
O
Elevator motor control signal output
71
O-LOD_NEG
O
Loading motor control signal output
72
I-SW5-B
I
SW5-B switch signal input from the CD mechanism
73
O-SLD_POS
O
Sled motor control signal output
74
I-WAKEUP
I
SENS signal from the Function Key
75
I-SW2-A
I
SW2-A switch signal input from the CD mechanism
76
I-SW2-B
I
SW2-B switch signal input from the CD mechanism
77
I-SW3
I
SW3 switch signal input from the CD mechanism
78
I-D.SENSOR
I
Disc sensor signal input
79
I-SW1-A
I
SW1-A switch signal input from the CD mechanism
80
I-SW5-A
I
SW5-A switch signal input from the CD mechanism
81
O-SLD_NEG
O
Sled motor control signal output
82
O-ELV_NEG
O
Elevator motor control signal output
83
O-LOD_POS
O
Loading motor control signal output
84
I-SLD_E0
I
SLD_E0 switch signal input from the CD mechanism
85
I-SLD_E2
I
SLD_E2 switch signal input from the CD mechanism
86
I-ELV_E0
I
ELV_E0 switch signal input from the CD mechanism
87
I-LEVEL-R
I
Signal output from the Function IC (Rch)
88
I-LEVEL-L
I
Signal output from the Function IC (Lch)
89
I-R.REC
I
Record protect detect switch signal input (rear)
90
I-ENC2
I
Treble signal input from the rotary encoder
91
I-ENC1
I
Bass signal input from the rotary encoder
92
I-ENC0
I
Volume signal input from the rotary encoder
93
I-SUFFIX
—
Ground terminal
94
I-END SW
I
END switch signal input from the tape deck
95
I-KEY1
I
Key input 1
96
VSS3
—
Ground terminal
97
I-KEY0
I
Key input 0
98
VREF
—
Reference voltage
99
AVCC
—
Power supply terminal
100
O-STLED
O
Standby LED control signal output (“L” : active)

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