Sony CMT-EP707 / HCD-EP707 Service Manual ▷ View online
29
29
HCD-EP707
5-14. SCHEMATIC DIAGRAM – REGULATOR Section –
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que
par une pièce portant le numéro spécifié.
POWER
AMP
BOARD
H
POWER
AMP
BOARD
I
MAIN
BOARD
(2/2)
CON216
F
DISPLAY
BOARD
J
VOL KEY
BOARD
K
12
14.8
14.8
14.8
14.1
6.1
8
0.1
0.7
4.9
5.7
8.8
0.7
2.1
(US, CND)
U802
+12V REGULATOR
CON809
2P
R844
100
C853
100PF
R842
10k
0.1
C851
0.1UF
L802
39mH
9P
DETECT
SW_TEST
GND
SW901
CD
MECHANISM
PROTECT
REGULATOR BOARD
SWITCH
BOARD
Q822
VOLTAGE
DETECT
9
8
7
6
5
4
3
2
1
0.1
3P
3P
C800
0.1
NJM7812A
0.1
D837
1N4148
CE838
100UF
100UF
C852
0.1UF
0.01
250V
680P
250V
250V
F803
∗
F804
∗
0.01
0.01
0.01
0.01
0.01
0.01
0.01
1k
D836
1N4001
MTZJ-72-5.6B
6.2V
CON810
2P
5.1V
5.1V
R843
1k
16V
470
C821
0.1UF
0.1
50V
2
1
1
2
3
D832, R834
+5V REGULATOR
Q801, 802
B+ SWITCH
R814
47
D816
RECT
RECT
D810 – 813
RECT
+5V REGULATOR
SUB POWER
TRANSFORMER
POWER ON/OFF
RELAY DRIVE
TR800
MAIN POWER
TRANSFORMER
D802 – 805
RECT
D806 – 809
RECT
50V
∗
F803
2A 125V
T2AL 250V
(US, CND)
(AEP, UK, AUS)
(AEP, UK, AUS)
∗
F804
4A 125V
T4AL 250V
(US, CND)
(AEP, UK, AUS)
(AEP, UK, AUS)
R841
3.3M
1/2W
3.3M
1/2W
AC IN
D833, 834, 837
RECT
50V
(Page 25)
(Page 25)
(Page 23)
(Page 27)
(Page 27)
30
30
HCD-EP707
• IC Block Diagrams
– MAIN Board –
IC201
LC72131D
IC204
BU4094BC
IC202
LA1823
IC205, 206
TA7291S (J)
IC207
PT2314
IC208
BA3308
PHASE
DETECTOR
CHARGE PUMP
SWALLOW COUNTER
1/16, 1/17 4BITS
12BITS
PROGRAMMABLE
DRIVER
UNIVERSAL
COUNTER
REFERENCE
DIVIDER
POWER
ON
RESET
1/2
CCB
INTERFACE
1
2 3 4 5
6 7 8 9
16
15
14
13
12
11
10
17
18
19
20
XOUT
VSS
AOUT
AIN
PD
VDD
FMIN
AMIN
XIN
DO
CL
DI
CE
IFIN
IO1
BO4
BO3
BO2
BO1
IO2
UNLOCK
DETECTOR
DATA SHIFT REGISTER LATCH
1
16
8 – STAGE
SHIFT REGISTER
15
OUTPUT
ENABLE
ENABLE
14 Q5
13 Q6
12 Q7
11 Q8
10 Q'S
9 QS
VDD
STROBE
2
SERIAL IN
3
CLOCK
8 – BIT
LATCHES
3 – STATE
OUTPUTS
4
Q1
5
Q2
6
Q3
7
8
Q4
VSS
24
23
FM
RF
1
AM
RF
GND2
2
VCC2
REG
3
AM
MIX
AM
OSC
OSC
BUFFER
4
22
21
VCC1
20
FM
OSC
PHASE
COMP
FM
MIX
DECODER
5
6
19
GND1
7
MUTE
8
18
17
16
9
15
PILOT
DET
14
FM
DET
13
10
FM
S-METER
11
12
ST
ST SW
FF
VCO
FF
FF
TRIG
AM
IF
AM
DET
AGC
FM
IF
SD
IF
BUFFER
FMRF IN
RF GND
FMRF OUT
VCC2
FM OSC
DET OUT
MUTE
R
L
AM/FM
MO/ST
FM DET
AMRF IN
REG
AM OSC
VCC1
FM MIX
GND
FM BUFFER
AM OSC BUFFER
AM MIX
QUAD
AMIF
SD
REGULATOR
PROTECT
CIRCUIT
5
7
4
8
9
1
2
6
3
GND
OUT1
NC
VREF
IN1
IN2
VCC
VS
OUT2
DRIVER
CIRCUIT
DRIVER
CIRCUIT
4
TREB_L
3
TREB_R
18
LOUT
MUTE
SPEAKER
ATT
11
R4
10
R3
9
R2
8
R1
6
ROUT
12
LOUD_L
7
LOUD_R
5
RIN
15
L2
16
L1
INPUT
SELECTOR
&
GAIN
CONTROL
SERIAL BUS
DECODER
&
LATCHES
14
L3
13
L4
20
BOUT_L
19
BIN_L
17
LIN
22
BOUT_R
23
OUT_R
MUTE
SPEAKER
ATT
24
OUT_L
21
BIN_R
26
DATA
25
DGND
28
REF
27
CLK
BASS
TREBLE
VOLUME &
LOUDNESS
LOUDNESS
1
VDD
2
AGND
3
4
5
6
7
8
GND
ALC
VCC
OUTPUT1
1
2
INPUT1
NF1
INPUT2
9
NF2
OUTPUT2
ALC
+
–
+
–
MUTE
IC209
BA335
AF AMP
COMPARATOR
1
2
3
4
5
6
7
8
9
V. N
C. R.
NF
NC
GND
T
ROUT
DIOUT
V8
VCC
IC203
BU1924F-E2 (AEP, UK models)
ANALOG
DIGIT
AL
RCLK
NC
XO
XI
VSS2
T2
VDD2
T1
QUAL
RDA
T
VREF
MUX
VDD1
VSS1
VSS3
CMP
1
4
3
6
5
8
7
2
14
15
16
13
12 11 10
9
CLOCK
PLL 57kHz
RDS/ARI
COMPARATOR
8th SWITCHED
CAPACITOR
FILTER
ANTI-ALIASING
FILTER
BIPHASE
DECODER
PLL
1187.5Hz
DEFFERENTIAL
DECODER
TEST
Ver 1.6
31
HCD-EP707
5-15.
IC PIN FUNCTION DESCRIPTION
•
DISPLAY BOARD IC101
µ
PD780206GF-127-3BA (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
VDD3
—
Power supply terminal (+4.2V)
2
POWER
O
Power on/off control signal output terminal “L”: standby, “H”: power on
3
MUTE
O
Muting on/off control signal output terminal “H”: active
4
PLL-CE
O
PLL chip enable signal output to the FM/AM PLL “H” active
5
SOUND ENABLE
O
Sound enable signal output terminal Not used
6
PRO-LOGIC-
ENABLE
O
Pro logic enable signal output terminal Not used
7
DAW M–
O
Drawer motor drive signal output terminal “L”: active
8
STROBE
O
Strobe signal output for the function select IC
9
CD-RESET
O
Reset signal output to the CD block “L”: reset
10
RESET
I
Reset signal input from the reset switch “L”: reset
11
X2
O
System clock output terminal (4.19MHz)
12
X1
I
System clock input terminal (4.19MHz)
13
IC (VPP)
—
Connected to granud
14, 15
NC
—
Not used
16
VDD2
—
Power supply terminal (+4.2V)
17
CLK
O
Serial data transfer clock signal output to the function select IC
18
DATA OUT
O
Serial data output to the function select IC
19
DATA IN
I
Serial data input from the FM/AM PLL
20
CAR M+
O
Carriage motor drive signal output terminal “L”: active
21
CAR M–
O
Carriage motor drive signal output terminal “L”: active
22
EEPROM CLK
O
Serial data transfer clock signal output to the EEPROM and input select IC
23
EEPROM DATA
I/O
Two-way data bus with the EEPROM and input select IC
24
DAW M+
O
Drawer motor drive signal output terminal “L”: active
25
AVSS
—
Ground terminal (for A/D converter)
26
RDS DATAIN
I
RDS serial data input terminal Not used
27
TUNER STATION
I
Tuning detection signal input from the LA1823 “L”: tuned, “H”: detuned
28
AMS
I
Automatic music sensor detection signal input terminal
29
KEY5
I
Key input terminal (A/D input)
30
KEY4
I
Key input terminal (A/D input) Not used
31 to 33
KEY3 to KEY1
I
Key input terminal (A/D input)
34
AVDD
—
Power supply terminal (for A/D converter) (+4.2V)
35
AVREF
I
Reference voltage (+4.4V) input terminal (for A/D converter)
36
CD CLK
O
Serial data transfer clock signal output to the CD block
37
RDS CLKIN
I
RDS serial data transfer clock signal input terminal Not used
38
PWDET
I
Power failure detection signal input terminal “L”: power failure, “H”: power on
39
REMIN
I
Remote control signal input from the remote control receiver
40
VSS
—
Ground terminal
41
CD-DATA
O
Serial data output to the CD block
42
ENCODER A
I
Jog dial pulse input from the rotary encoder (A phase input)
43
ENCODER B
I
Jog dial pulse input from the rotary encoder (B phase input)
44
REC IN
I
Tape play/rec detect sensor input terminal “L” input when the tape play/rec detect
45
NC
—
Not used
46
VDD1
—
Power supply terminal (+4.2V)
47
CAR EX
I
Switch input from the CD block “H”: when elevator is moving
32
HCD-EP707
Pin No.
Pin Name
I/O
Description
48
CAR HM
I
Switch input from the CD block “H”: home position
49
4
I
Switch input from the CD block
50
5
I
Switch input from the CD block
51
OP/CLS
I
Switch input from the CD block “L”: When tray open/close completely
52
SLD FW
I
Switch input from the CD block “L”: when tray is close
53
STEREO
I
FM stereo detection signal input from the LA1823 “H”: stereo
54
SLD REW
I
Switch input from the CD block “L”: when tray is open
55, 56
NC
—
Not used
57
MODE-SW
I
Head position detect switch input terminal “H”: reverse direction, “L”: forward direction
58
NC
—
Not used
59
HALF-SW
I
Cassette tape detect switch input terminal “H”: no cassette, “L”: cassette in
60
NC
—
Not used
61
REC-SW (FWD)
I
Rec-proof claw (forward direction) detection signal input from the protect detect switch
“L”: recording possible, “H”: protect
“L”: recording possible, “H”: protect
62
REC-SW (RVS)
I
Rec-proof claw (reverse direction) detection signal input from the protect detect switch
“L”: recording possible, “H”: protect
“L”: recording possible, “H”: protect
63, 64
BASS1, BASS2
—
Not used
65 to 70
NC
—
Not used
71, 72
S19, S18
I/O
Segment drive signal output terminal
AM frequency select switch input terminal
AM frequency select switch input terminal
73 to 90
S17 to S1
O
Segment drive signal output terminal
91, 92
G10, G9
O
Grid drive signal output terminal Not used
93 to 100
G8 to G1
O
Grid drive signal output terminal
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