DOWNLOAD Sony CMT-SP55MD / CMT-SP55TC / ST-SP55 Service Manual ↓ Size: 1.77 MB | Pages: 16 in PDF or view online for FREE

Model
CMT-SP55MD CMT-SP55TC ST-SP55
Pages
16
Size
1.77 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-sp55md-cmt-sp55tc-st-sp55.pdf
Date
PREV: Sony CMT-SP55MD / CMT-SP55TC / TA-SP55 Service Manual

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ST-SP55
9
9
3-6. PRINTED WIRING BOARD – PANEL SECTION –
There are a few cases that the part isn't mounted
in model is printed on diagram.
(Page 7)
(Page 7)
(Page 7)
ST-SP55
10
10
1
DP_DATA
O
LCD data output.
2
DP_CLK
O
LCD clock output.
3
DP_CS
O
LCD chip STB signal output.
4
BL_DIMMER
O
LCD back light bright signal output. (H: BRIGHT, L: DARK)
5
N.C
—
Not used.
6
N.C
—
Not used.
7
N.C
—
Not used.
8
BYTE
—
Connected to ground.
9
GND
—
Connected to ground.
10
XC IN
I
SUB CLOCK input. (32.768kHz)
11
XC OUT
O
SUB CLOCK output. (32.768kHz)
12
RESET
I
System master reset input.
13
X-OUT
O
MAIN SYSTEM CLOCK output. (10MHz)
14
VSS
—
Ground
15
X-IN
I
MAIN SYSTEM CLOCK input. (10MHz)
16
VCC
—
Power supply. (EVER +5V)
17
NMI
I
PULL UP (EVER +5V)
18
ST_MUTE
O
ST MUTE singal output.
19
SCOR
I
CD Q-data request signal input.
20
RDS-INT
I
RDS clock signal input.
21
RDS-DATA
I
RDS data signal input.
22
AC OUT
I
TA AC interrupt signal input. (H: AC ON,  L: AC OFF)
23
STEREO
I
ST STEREO signal input. (L: STEREO)
24
TUNED
I
ST TUNED signal input. (L: TUNED)
25
ST_CE
O
ST PLL chip enable signal output.
26
ST_DOUT
O
ST PLL data signal output.
27
ST_DIN
I
ST PLL data signal input.
28
ST_CLK
O
ST PLL clock output.
29
IIC_CLK
I/O
IIC SCL output.
30
IIC_DAT
I/O
IIC SDA output.
31
TXD1
—
Not used.
32
SQ DATA
I
CD SUBQ data input.
33
SQ CLK
O
CD SUBQ clock output.
34
LPC_HOLD
O
CD LPC hold output.
35
CD_DATA
O
CD data signal output.
36
N.C
I
Not used.
37
CD_CLK
O
CD clock output.
38
BD_PWR
O
CD_BD power control signal output. (H: ON, L: OFF)
39
LOAD_OUT
O
CD loading motor control signal output.
40
LOAD_IN
O
CD loading motor control signal output.
41
SENSE
I
CD SENSE signal input.
42
CD_XLAT
O
CD XLAT signal output.
43
PLAY_LED
O
CD PLAY LED signal output. (H: OFF, L: ON)
44
PAUSE_LED
O
CD PAUSE LED signal output. (H: OFF, L: ON)
45 to 50
N.C
—
Not used.
51
RO_MUTE_AUX
O
AUX out mute signal output. (H: MUTE OFF, L: MUTE)
52 to 57
N.C
—
Not used.
58
FUNC_INHIBIT
O
TA input select inhibit signal. (H: INHIBIT, L: NOT INHIBIT)
59
N.C
O
Not used.
60
FUNC2
O
TA input select signal output.
61
FUNC1
O
TA input select signal output.
62
VCC
—
Power Supply (EVER +5V)
63
N.C
—
Not used.
Function
Pin Name
Pin No.
3-7. IC PIN FUNCTIONS
• IC701 M30620MCA-A67FP  MASTER CONTROL (MAIN BOARD)
64
VSS
—
Ground.
65
N.C
—
Not used.
66
N.C
—
Not used.
67
PCPON
I
Power ON signal from PC.
68 to 71
N.C
—
Not used.
72
DSG_ON
O
TA DSG off control signal output. (H: DSG OFF, L: DSG ON)
73
VOL_LAT
O
ST, “(IC401)” Volume latch.
74
VOL_CLK
O
ST, “(IC401)” Volume clock.
75
VOL_DATA
O
ST, “(IC401)” Volume data signal output.
76
PRE_MUTE
O
TA PRE MUTE signal output. (H: MUTE OFF, L: MUTE ON)
77
XHP_MUTE
O
TA headphone MUTE signal output. (H: MUTE OFF, L: MUTE ON)
78
ON/STANDBY
O
TA Power amp MUTE/Standby LED signal output. (H: ON, L: STANDBY)
79
PWR_RELAY
O
TA Standby relay signal output. (H: RELAY OFF, L: RELAY)
80
SP_RELAY
O
TA Speaker relay signal output.
81
N.C
—
Not used.
82
N.C
—
Not used.
83
DP_PWR
O
LCD power ON/OFF signal output. (H: OFF, L: ON)
84
ILL
O
LCD backlight ON/OFF signal output. (H: ON, L: OFF)
85
P_DOWN OUT
O
MD/TC power control signal output. (H: POW ON, L: STANDBY)
86
VOL_ENC_A
I
TA Volume encoder (A) signal input.
87
VOL_ENC_B
I
TA Volume encoder (B) signal input.
88
SIRCS
I
RM SIRCS signal input.
89
KEY0
I
KEY A/D input. (For ST)
90
KEY1
I
KEY A/D input. (For ST)
91
KEY2
I
KEY A/D input. (For TA)
92
KEY3
I
KEY A/D input. (For CDP)
93
NC
—
Not used.
94
NC
I
Not used (pull up).
95
CDM_SW
I
CD Loading switch input.
96
AD_GND
—
Analog ground.
97
DISTINATION
I
Distination signal input.
98
VREF
—
Analog Reference Voltage.
99
AVCC
—
Analog Power Supply.
100
NC
—
Not used.
Function
Pin Name
Pin No.
INH
A
B
SEL
FUNC
L
L
L
0
AUX (H)
L
H
L
1
AUX (L)
L
L
H
2
TAPE
L
H
H
3
GND
H
X
X
NONE
NONE
11
3-8. IC BLOCK DIAGRAM
IC401   LC75342
11
12
13
14
15
16
17
18
19
20
LOGIC
CIRCUIT
CCB
INTERFACE
CONTROL
CIRCUIT
1
2
4
28
29
27
3
30
5
6
7
CONTROL
CIRCUIT
8
9
10
21
22
23
24
25
26
LOUT
LBASS2
LBASS1
LTRE
LIN
LSELO
RROUT
RBASS2
RBASS1
RTRE
RIN
RSELO
L4
L3
L2
L1
NC
NC
R1
R2
R3
R4
LVREF
RVREF
TEST
TVSS
CE
DI
CL
VDD
VREF
NC
12
SECTION 4
EXPLODED VIEW
4-1. CASE AND FRONT PANEL
NOTE:
• Items marked “*” are not stocked since they 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.
• Hardware (# mark) list and accessories and pack-
ing materials are given in the last of this parts list.
The components identified by
mark  0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
• Abbreviation
AED : North European model
MY
: Malasia model
SP
: Singapore model
HK
: Hong Kong model
KR
: Korea model
1
1-769-916-11 WIRE (FLAT TYPE) (9 CORE)
2
4-951-620-01 SCREW (2.6X8), +BVTP
3
1-678-671-11 PANEL BOARD
4
4-229-683-01 PLATE (R), SIDE
5
4-229-678-01 BUTTON (U/D)
6
X-4953-027-1 FOOT ASSY
7
4-229-677-01 WINDOW (LCD)
8
4-229-676-01 PANEL (ST), FRONT (AEP,UK,AED)
8
4-229-676-11 PANEL (ST), FRONT (HK,MY,SP,KR)
9
4-229-684-01 PLATE (L), SIDE
10
X-4953-022-1 PANEL ASSY (ST), SUB
11
4-229-680-01 ILLUMINATOR
12
4-229-679-01 HOLDER, LCD
13
1-678-672-11 LED BOARD
14
1-769-970-11 WIRE (FLAT TYPE) (13 CORE) (HK,MY,SP,KR)
14
1-773-002-11 WIRE (FLAT TYPE) (15 CORE) (AEP,UK,AED)
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
15
A-4424-804-A MAIN BOARD, COMPLETE (AEP,UK,AED)
15
A-4473-725-A MAIN BOARD, COMPLETE (HK,MY,SP,KR)
16
3-363-099-51 SCREW (CASE 3 TP2)
17
4-229-687-11 CASE
18
4-229-686-01 PANEL, BACK (AEP,UK,AED)
18
4-229-686-21 PANEL, BACK (HK,MY,SP)
18
4-229-686-31 PANEL, BACK (KR)
19
1-693-482-11 TUNER (FM/AM) (HK,MY,SP,KR)
19
1-693-499-11 TUNER (FM/AM) (AEP,UK,AED)
20
1-678-673-11 PIN JACK BOARD
21
4-965-822-01 FOOT
22
4-924-098-11 HOLDER, PC BOARD
23
7-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S
24
7-685-648-79 SCREW +BVTP 3X12 TYPE2 N-S
25
7-685-650-79 SCREW +BVTP 3X16 TYPE2 N-S
LCD101 1-804-056-11 DISPLAY PANEL, LIQUID CRYSTAL
1
2
2
3
4
5
24
24
6
7
8
9
10
11
23
12
13
2
14
15
25
16
16
17
18
23
19
20
21
22
not supplied
not 
supplied
LCD101
23
23
23
A
A
not supplied
not supplied
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