Sony CX-LDB30 / CX-LDB50 / XR-DB30 / XR-DB50 Service Manual ▷ View online
45
CX-LDB30/LDB50
• IC Pin Function Description
MAIN BOARD IC901 M30622MEP-A26FPU0 (SYSTEM CONTROLLER)
MAIN BOARD IC901 M30622MEP-A26FPU0 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-LCDATA
O
LCD DATA
2
O-LCDSCK
O
Data output to the fluorescent indicator tube
3
O-VOLUMELED
O
LED (i-Bass/DEMO) control signal output
4
I-RMC
I
Remote control signal input from the remote sensor
5
O-MP3DATA
O
MP3 DATA OUT
6
I-MP3DATA
I
MP3 DATA IN
7
O-MP3CLK
O
Clock output to the CD unit
8
BYTE
I
Destination setting input terminal
9
CNVSS
I
Flash data signal input terminal
10
32KHz-IN
I
Oscillation circuit signal input for the real time clock
11
32KHz-OUT
I
Oscillation circuit signal output for the real time clock
12
I-RESET
—
Reset signal input
13
16MHz-OUT
—
Oscillation circuit signal output for the system main clock
14
VSS
—
Ground terminal
15
16MHz-IN
I
Oscillation circuit signal input for the system main clock
16
VCC
—
Power supply terminal (+3.3 V)
17
NMI
—
HIGH always
18
I-RDSCLK
I
Clock signal input from the tuner
19
I-SCOR
I
Sub code sync signal input from the CD unit
20
AC-CUT
I
Power down detection signal input
21
NC
—
Not used
22
O-PLLCE
O
Latch signal output to the tuner
23
O-PLLDAT
O
Data output to the tuner
24
NC
—
Not used
25
I-PLLDAT/I-STEREO
I
Pll data or stereo tuner detection signal input terminal
26
I-TUNE
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
O
12C clock signal output
30
O-SDA
O
12C data signal output
31
TXD
—
Flash link data output terminal
32
I-MP3ACK
I
Acknowledge signal input from the MP3 IC
33
I-MP3REQ
I
Request signal input from the MP3 IC
34
RTS
O
Flash RTS signal output terminal
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-CLOCK
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-LCDRESET
O
Clock signal output to the fluorescent indicator tube
41
I-HEADPHONE
I
Headphone signal input terminal
42
O-FRONTRELAY
O
Front relay on/off detection signal output
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-MICS
O
Clock output to the MP3 IC
48
O-MILP
O
Latch pulse signal output to the MP3 IC
49
O-MP3STBY
O
Strobe signal output to the MP3 IC
46
CX-LDB30/LDB50
Pin No.
Pin Name
I/O
Description
50
O-FUNCCLK
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-STKPOWER
I/O
STK POWER ON/OFF
56
I-SENS
I
SENS signal input from the CD unit
57
O-XTACN
O
Clock output from the CD unit
58
I-RDSDATA
I
RDS data input from the tuner
59
I-AUDION
I
Audio signal detection input terminal
60
O-XRST
O
Reset signal output to the CD unit
61
A9
—
Not used
62
VCC
—
Power supply terminal
63
A8
—
Not used
64
VSS
—
Ground terminal
65
O-CDON
O
CD power supply control signal output
66
A6
—
Not used
67
A5
—
Not used
68
A4
—
Not used
69
A3
—
Not used
70
A2
—
Not used
71
A1
—
Not used
72
A0
—
Not used
73
D15/INT5
—
Not used
74
I-WAKEUPKEY
I
System wake up signal input terminal in the standby status
75
D13/INT3
—
Not used
76
D12
—
Not used
77
D11
—
Not used
78
D10
—
Not used
79
I-STEREO
O
STEREO indicate signal from the Tuner unit
80
O-TUMUTE
O
Mute signal output to the Tuner unit
81
D7
—
Not used
82
O-LDOUT
O
Loading motor control signal output
83
O-LDIN
O
Loading motor control signal output
84
I-CDMSW3
I
CDM trigger switch input
85
I-CDMSW1
I
CDM out switch input
86
I-CDMSW2
I
CDM chack switch input
87
D1
I
Not used
88
I-ENC0
I
VOL signal input from the rotary encoder
89
I-HALFSW
I
Cassette half or rec switch detectin signal input
90
I-ENC2
I
Treble signal input from the rotary encoder
91
I-ENC1
I
Bass signal input from the rotary encoder
92
I-MODEL
—
Not used
93
I-SUFFIX
I
Version setting input terminal
94
I-END SW
I
END switch signal input from the tape deck
95
I-KEY1
I
Key input 1
96
AVSS
—
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)
47
CX-LDB30/LDB50
SECTION 8
EXPLODED VIEWS
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Abbreviation
AUS
AUS
: Australian model.
E51
: Chilean and Peruvian model.
KR
: Korean model.
RU
: Russian model.
Ref. No.
Part No.
Description
Remark
8-1.
PANEL SECTION
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
Ref. No.
Part No.
Description
Remark
1
4-242-531-01 QT2+3-10 W/O SLOT
2
3-254-146-01 SCREW (B3), (+) BV TAPPING
3
3-254-143-11 SCREW (B3), (+) BV TAPPING
4
3-254-143-01 SCREW (B3), (+) BV TAPPING
5
4-245-911-51 PANEL, TOP (LDB50)
5
4-245-911-61 PANEL, TOP (LDB30)
6
4-245-912-51 PANEL (L), SIDE (LDB50)
6
4-245-912-61 PANEL (L), SIDE (LDB30)
7
4-245-913-51 PANEL (R), SIDE (LDB50)
7
4-245-913-61 PANEL (R), SIDE (LDB30)
8
2-549-913-01 PANEL, BACK (AEP, UK, RU)
8
2-549-913-21 PANEL, BACK (E51)
9
1-763-697-21 DC FAN
10
1-828-403-11 WIRE (FLAT TYPE)(27 CORE)
11
2-595-983-01 CUSHION (PAENL SIDE)
CD mechanism section
chassis
section
section
front panel section
not
supplied
1
7
5
8
9
1
1
4
4
4
4
10
3
4
a
a
b
b
c
c
d
d
6
11
1
1
2
3
3
3
3
3
Ver. 1.2
48
CX-LDB30/LDB50
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
2-514-936-01 PANEL, CASSETTE (LDB50)
51
2-514-936-11 PANEL, CASSETTE (LDB30)
52
4-245-916-01 HOLDER, CASSETTE
53
4-246-745-01 CASSETTE, SPRING
54
4-245-938-01 SPRING (CASS), TORSION
55
2-514-938-01 WINDOW, DISP
56
2-514-944-01 KNOB, B/T
57
4-253-199-01 KNOB (VOL)
58
2-514-947-01 RING, VOL
59
2-514-959-01 HOLDER (VOL)
60
2-514-937-01 PANEL, CD
61
2-514-945-01 KEY, EJECT
62
2-514-935-01 CABINET, FRONT (LDB50: AEP)
62
2-514-935-11 CABINET, FRONT (LDB50: RU, E51)
62
2-514-935-21 CABINET, FRONT (LDB30: AEP, UK)
62
2-514-935-31 CABINET, FRONT (LDB30: RU, E51)
63
4-242-091-01 CUSHION
64
2-514-942-01 INDICATOR, POWER
65
2-548-151-01 CAP, POWER
66
2-514-939-01 KEY, POWER
67
X-2025-175-1 KEY ASSY, FUNC (A)
68
X-2025-176-1 KEY ASSY, FUNC (B)
69
2-514-946-01 KEY, REC
70
4-242-171-01 DAMPER 150 N
71
4-242-172-01 PLATE, LOCK
72
4-242-173-01 SPR-C, LOCK
73
4-242-175-01 HLDR, LOCK 2
74
4-253-764-01 COVER (CD)
75
A-1091-005-A PANEL BOARD, COMPLETE (LDB50)
75
A-1097-409-A PANEL BOARD, COMPLETE (LDB30)
76
A-1095-285-A CD EJECT BOARD, COMPLETE
77
1-828-360-11 WIRE (FLAT TYPE) (19 CORE)
78
A-1091-007-A JACK BOARD, COMPLETE
79
1-828-958-11 WIRE (FLAT TYPE) (9 CORE)
80
3-254-151-01 SCREW (B2.6), (+) P TAPPING
81
3-254-143-01 SCREW (B3), (+) BV TAPPING
82
1-828-945-11 WIRE (FLAT TYPE) (7 CORE)
83
1-796-352-41 DECK, MECHANICAL
not
supplied
not
supplied
not
supplied
54
55
57
58
59
60
61 63
62
64
65
66
67
68
69
70
74
71
72
73
83
82
75
77
76
80
80
81
81
80
81
78
79
51
56
52
53
a
a
b
b
8-2.
FRONT PANEL SECTION
Ver. 1.1
Click on the first or last page to see other CX-LDB30 / CX-LDB50 / XR-DB30 / XR-DB50 service manuals if exist.