Sony CMT-EX1 / HCD-EX1 Service Manual ▷ View online
33
• Abbreviation
EFM : Eight to Fourteen Modulation
PLL : Phase Locked Loop
PLL : Phase Locked Loop
Pin No.
Pin Name
I/O
Function
TE
CE
RFDC
ADIO
AVSS0
IGEN
AVDD0
ASYO
ASYI
RFAC
AVSS1
CLTV
FILO
FILI
PCO
AVDD1
BIAS
VCTL
V16M
VPCO
DVDD2
ASYE
MD2
DOUT
LRCK
PCMD
BCLK
EMPH
XTSL
DVSS2
XTAI
XTAO
SOUT
SOCK
XOLT
SQSO
SQCK
SCSY
SBSO
EXCK
41
42
43
44
45
46
47
48
49
50
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
I
I
I
O
–
I
–
O
I
I
–
I
O
I
O
–
I
I
I/O
O
–
I
I
O
O
O
O
O
I
–
I
O
O
O
O
O
I
I
O
I
Tracking error signal input
Center servo analog input
RF signal input
Test pin (Not used)
Analog ground
Stabilized current input for operational amplifiers
Analog power supply
EFM full swing output
Asymmetry comparate voltage input
EFM signal input
Analog ground
Control voltage input for master VCO1
Filter output for master PLL
Filter input for master PLL
Charge-pump output for master PLL
Analog power supply
Asymmetry circuit constant current input
VCO2 control voltage input for wide band EFM PLL (Connected to VDD)
VCO2 oscillator input/output for wide band EFM PLL (Not used)
Charge-pump output for wide band EFM PLL (Not used)
Digital power supply
Asymmetry circuit ON/OFF input
“L” OFF, “H” : ON (Connected to VDD)
Digital-out ON/OFF control input (Connected to VDD)
Digital-out output pin
D/A interface LR clock output (ƒ = Fs)
D/A interface serial data output
D/A interface bit clock output
Playback disc output in emphasis mode (Not used)
X'tal selection input (Connected to ground)
Digital ground
X'tal oscillator circuit input
X'tal oscillator circuit output (Not used)
Serial data output in servo block (Not used)
Serial data read clock output in servo block (Not used)
Serial data latch output in servo block (Not used)
Sub-Q 80-bit and PCM peak level data output (CD text data output)
Clock input for SQSO read-out
Connected to ground
Sub-P through Sub-W serial output (Not used)
Clock input for SBSO read-out (Connected to ground)
34
Pin No.
Pin Name
I/O
Function
• IC701 uCOM (UPD780306GF-024-3BA) (MAIN Board (3/3))
1
TUNED
I
ST tuning
2
PLL_CE
O
ST PLL CE
3
PLL_DATAI
I
ST PLL IN data
4
PLL_DATAO
O
ST PLL OUT data
5
PLL_CLK
O
ST PLL CLK
6
GND
–
Ground (Programing)
7
XOUT
–
8
XIN
–
9
VDD1
–
Ground
10
XT1
–
11
XT2
–
12
RESET
I
uCOM reset in
13
REMOTE
I
SIRCS IN
14
RDS_CLK
I
ST RDS clock
15
POWDET
I
AC power down detect
16
SCOR
I
CD SCOR
17
RDS_DATA
I
ST RDS data
18
SENSE
I
CD SENS
19
SUB Q
I
CD SUBQ IN data
20
BACKLIGHT
O
LCD back light
21
SERVO_CK
O
CD SQCK/SCLK (for serial in)
22
XLAT
O
CD data latch
23
XRST
O
CD (BC) reset
24
SCLK
O
CD CLOCK/PCM1710 CLK
25
MUTE_D
O
CD digital mute
26
CD_POWER
O
CD (BD) power
27
AVSS
–
Ground
28
KEYIO_1
I
29
KEYIO_2
I
30
BAND_AREA
I
Destination setting
31
DA_LAT
O
PCM1710 latch
32
LPH
O
CD LPH
33
LDON
O
CD LASER ON
34
OPEN_SW
I
OPEN SW
35
CLOSE_SW
I
CLOSE SW
36
VDD0
–
37
AVREF
–
38
AMP_MUTE
O
POWER AMP MUTE
39
DATA
O
CD CMD/PCM1710 OUT DATA
40
VSS1
–
Ground
41
OPEN
O
CD loading motor open
42
CLOSE
O
CD loading motor close
43
POWER
O
System power
44
TA_MUTE
O
TA MUTE
45
SP_RELAY
O
Speaker relay
46
ST_MUTE
O
ST MUTE
47
SLEEP
O
Power supply sleep control
48
VOL_CLK
O
VOL CLK
49
VOL_DATA
O
VOL OUT data
50
VOL_STB
O
VOL STB
5MHz (Main clock)
32KHz (Sub clock)
KEY
+5V
35
Pin No.
Pin Name
I/O
Function
51 to 54
COM0 to COM3
O
LCD COMMON
55
BIAS
O
LCD DRIVE POWER
56 to 58
VLC0 to VLC2
O
LCD DRIVER POWER
59
VSS0
O
Ground
60 to 99
SEG0 to SEG39
O
FL segment signal output
100
STEREO
I
ST
STEREO
36
SECTION 6
EXPLODED VIEWS
6-1. FRONT PANEL AND CASE SECTION
NOTE:
• -XX, -X mean standardized parts, so they 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.
should be anticipated when ordering these items.
• Color Indication of Appearance Parts Example:
KNOB, BALANCE (WHITE)
Â
Parts color
• 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.
• Abbreviation
CND : Canadian model
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
The components identified by
mark
mark
! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
Les composants identifiés par une
marque
marque
! sont critiques pour la
sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
Ne les remplacer que par une
piéce portant le numéro spécifié.
21
20
17
16
3
4
6
7
5
2
1
#1
#2
#2
#2
#2
#2
#1
not supplied
not supplied
not supplied
8
22
22
22
9
15
17
11
10
12
14
13
23
18
19
1
4-969-961-11 EMBLEM(NO.4), SONY
2
4-222-620-01 RING (EJECT)
3
4-222-713-01 PANEL(BASE), FRONT
4
4-222-720-01 BUTTON(PLAY)
5
4-222-719-01 BUTTON(POWER)
6
4-222-742-01 SPRING(EJECT)
7
4-222-743-01 SPRING(EARTH)
8
A-4426-743-A PANEL MOUNTED PC BOARD
9
1-769-889-11 WIRE(FLAT TYPE) (7 CORE)
10
X-4952-306-1 WINDOW (GLASS) ASSY (US,CND)
10
X-4952-307-1 WINDOW (GLASS) ASSY (EXCEPT US,CND)
11
4-222-707-01 YOKE(MG)
12
4-222-703-01 MAGNET
13
4-222-709-01 YOKE(ST)
14
4-222-704-01 STABILIZER
15
4-222-711-01 PLATE(L), SIDE
16
4-222-710-01 PLATE(R), SIDE
17
4-985-672-01 SCREW(+PTPWHM2.6), FLOATING
18
4-222-712-01 PLATE, TOP
19
4-222-716-01 CASE
20
4-222-718-01 COVER(PIN JACK)
21
4-222-717-01 COVER(BACK)
22
4-951-620-01 SCREW (2.6x8), +BVTP
23
3-927-664-01 SCREW (2x3)
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