Sony HCD-DP700 / MHC-DP700 Service Manual ▷ View online
21
HCD-DP700
Note:
Clear RF signal waveform means that the shape “
◊” can be
clearly distinguished at the center of the waveform.
RF signal waveform
E-F Balance (1 Track jump) Check
Procedure:
1.
1.
Connect oscilloscope to TP (TE) and TP (DVC) board.
2.
Turned Power switch on.
3.
Load a disc (LUV-P01) and playback the number nine track.
4.
Press the bB button. (Becomes the 1track jump mode.)
5.
Confirm that the level B and A (DC voltage) on the oscilloscope
waveform.
waveform.
1 track jump waveform
6.
Adjust RV101 so that A (DC voltage) becomes 0.
RF signal waveform
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
level : 1.45
±
0.3Vp-p
level=1.3
±
0.6Vp-p
symmetry
A (DC voltage)
center of
waveform
waveform
B
0V
1 track jump waveform
Specified level: ––
× 100=less than ±22%
B
A
Checking Location:
[BD BOARD]
TP(TE)
TP(VC)
TP(VC)
BD board
oscilloscope
DVC
RFAC
FE
SE
TE
RFDC
22
HCD-DP700
SECTION 6
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
• Indication of transistor.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
c
: digital out
g
: MD (VIDEO)
• Abbreviation
CND : Canadian model
MX
MX
: Mexican model
E51
: Chiri and Peru model
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIA-
GRAMS.
(In addition to this, the necessary note is printed in each block.)
GRAMS.
(In addition to this, the necessary note is printed in each block.)
B
These are omitted.
C
E
Q
C
B
These are omitted.
E
Q
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
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.
23
23
HCD-DP700
6-1. CIRCUIT BOARD LOCATION
• WAVEFORMS
1
IC101
yj
(XTAO)
CD PLAY MODE
4.0Vp-p
16.943MHz
1.2Vp-p
2
IC101
ta
(RFAC)
CD PLAY MODE
3
IC101
ra
(TE)
CD PLAY MODE
4
IC101
el
(FE)
CD PLAY MODE
400nsec/div
approx 400mVp-p
approx 170mVp-p
2
IC401
qd
(X-OUT)
STOP MODE
1
IC401
qa
(XC-OUT)
STOP MODE
2.8Vp-p
16MHz
3.0Vp-p
32.768kHz
3
T301
4
TAPE B REC MODE
130Vp-p
80.1kHz
– BD BOARD –
– MAIN BOARD –
1
IC1101
is
(XOUT)
STOP MODE
3Vp-p
4MHz
– PANEL BOARD –
DRIVER board
LEAF SW board
CD-PANEL board
TRANS board
SUB TRANS board
DSP board
OPT IN REAR board
(E51, MX only)
(E51, MX only)
MAIN board
SURROUND AMP board
FRONT AMP board
OPT IN board
PANEL board
HEAD (B) board
HEAD (A) board
BD board
MOTOR board
CD SENSOR board
HCD-DP700
24
24
6-2. BLOCK DIAGRAMS
– TUNER/CD SECTION –
: FM
: CD
• Signal Path
• RCH is omitted
: DIGITAL OUT
FM 75
Ω
G
AM
TM1
(EXCEPT AEP)
TM1
(AEP)
ANT IN
1
7
IF OUT
8
OSC OUT
5
VT
FE1(E51,MX)
FE3(AEP)
FE3(AEP)
ANT IN
8
1
IF OUT
3
F OUT
4
VT
FE2(US,CND)
+B
(FE1-3)
A+12V
Q2
FM
10
FM OSC
16
AOUT
20
AIN
19
PD
18
PLL
IC51
12
IF IN
7
FM
15
AM OSC
9
VCO STOP
8
IF REQ
6
DO
4
DI
5
CL
3
CE
XIN
1
XOUT
22
X51
4.5MHz
X801
4.332MHz
RF IF
AMP
AMP
Q1
CF1
CF2
DO
DI
CL
CE
2
11
4
9
10
2
AM MIX OUT
AM/FM
DATA
11
OSC FM
24
VCO STOP
12
IF REQ MUTE
10
AM RF IN
21
AM OSC
23
VCC
9
AFC
22
FM IF
1
AM/FM IF MPX
IC11
13
L OUT
14
R OUT
BUFFER
Q11
LPF11
LPF
4
AM IF IN
IFT11
R-CH
18
4
2
16
DECORDER
INT
13
14
BUFFER
Q81
17
PLL IN OUT
16
DECORDER
IN
A
MAIN
SECTION
6
TUNED
7
STEREO
RV11
ST MUTE
21
RDS-INT
18
RDS-DATA
20
22
27
25
ST-DOUT
ST-DIN
ST-CLK
CE
4 SIRCS
23
STEREO
87
TUNED
88
MASTER CONTROL
IC401(1/2)
1
DO
CL
CE
DI
DI
OPTICAL PICK-UP
BLOCK
(A-MAX.3)
+5V
LD
DRIVE
Q101
RF AMP
IC103
VC
27
A
6
B
7
C
VCC
8
D
9
E
10
F
11
LD
1
PD
2
IC102
MOTOR/COIL DRIVE
CH1OUTR
13
CH1OUTF
14
CH2OUTR
11
CH2OUTF
12
CH3OUTR
18
CH4OUTF
15
M
M102
SLED
MOTOR
CH3OUTF
17
CH4OUTR
16
M
M101
SPINDLE
MOTOR
2
CH1FIN
3
CH1RIN
5
CH2FIN
6
CH2RIN
23
CH3RIN
24
CH3FIN
25
CH4INSIN
20
MUTE
MDP
26
SFDR
28
SRDR
29
TRDR
31
TFDR
30
FRDR
33
FFDR
32
SSTP
27
DIGITAL SERVO
DIGITAL SIGNAL PROC.
D/A CONV.
IC101
60
D OUT
29
RFDCI
28
RFDCO
16
FE
18
TE
22
VCC
12
SW
RFDC
43
FE
39
TE
41
SE
40
RFAC
51
15
OUT
CD
DIGITAL OUT
IC609
5
DATA
L-CH
7
CLOK
6
XLAT
2
SQCK
9
SCLK
20
SCOR
1
SQSO
SENS
66
XTAI
67
XTAO
3
XRST
X101
16.9344MHz
CD DATA
35
CD CLK
37
XLT
42
SQ CLK
33
SCOR
19
SQ DATA
SENS
32
34
XRST
43
DISPLAY KEY
73
LDON
40
TBL ADDRESS
SENSOR
49
T SENS
IC711
48
BU UP/DOWN SW
46
OPEN SW
47
CLOSE SW
44
LOAD IN
OPEN/CLOSE
S701
BU UP/
DOWN
S711
45
LOAD OUT
MOTOR
DRIVE
9
7
4
2
M
IC701
TURN
MOTOR
M721
(Page 25)
IC81
DECODER
RB41
6
7
8
3
1
OPTICAL
DIGITAL
OUT
13
11
2
4
9
6
8
REMOTE
SENSOR
SENSOR
IC1102
LDON
S1135
DISPLAY
SWITCH
POWER KEY
74
S1115
POWER
SWITCH
IC551
LEVEL SHIFT
SQ-DATA
4
2
3
DIGITAL AUDIO
INTERFACE
IC604(2/2)
DIGITAL
IN
IC1195
5
DIGITAL
IN
IC801
E51,MX
IC608
IC608
IC608
10
8
12
3
5
1
DIN0
DIN1
SPDIF
DIN2
AEP
JW1002
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