Sony HCD-GRX90AV / HCD-RXD10AV / MHC-GRX90AV Service Manual ▷ View online
– 17 –
SECTION 7
DIAGRAMS
7-1. CIRCUIT BOARDS LOCATION
– 18 –
CD SECTION
Note:
1. CD Block is basically constructed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M
3. Use an oscilloscope with more than 10M
Ω
impedance.
4. Clean the object lens by an applicator with neutral detergent when
the signal level is low than specified value with the following
checks.
checks.
S Curve Check
Procedure :
1. Connect the oscilloscope to test points TP (FE) and TP (VC).
2. Connect TP (FEI) and GND, and TP (AGCCON) and GND of
1. Connect the oscilloscope to test points TP (FE) and TP (VC).
2. Connect TP (FEI) and GND, and TP (AGCCON) and GND of
the BD board with lead wires.
3. Press the
1/u button to turn the set ON.
4. With the disc (YEDS-18) loaded, press the
^ button and
perform focus search. (Focus search will be performed in the
same way even while the disc table is pushed in and out.)
same way even while the disc table is pushed in and out.)
5. Check the symmetry and peak to peak level of the oscilloscope
waveform (S curve) at this time.
S-curve waveform
6. After check, remove the lead wire connected in step 2.
Note:
• Try to measure several times to make sure than the ratio of
A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the bright-
ness to obtain best waveform.
RF Level Check
Procedure :
1. Connect oscilloscope to test point TP (RF) and TP (VC) on BD
1. Connect oscilloscope to test point TP (RF) and TP (VC) on BD
board.
2. Connect TP (AGCCON) and GND of the BD board with lead
wires.
3. Press the
1/u button to turn the set ON.
4. Put disc (YEDS-18) in and playback 5track.
5. Confirm that oscilloscope waveform is clear and check RF sig-
5. Confirm that oscilloscope waveform is clear and check RF sig-
nal level is correct or not.
6. After check, remove the lead wire connected in step 2.
Adjustment Location :
[ BD BOARD ] — SIDE A —
Procedure:
1. Connect oscilloscope to test point TP (TE) on BD board.
2. Press the
1. Connect oscilloscope to test point TP (TE) on BD board.
2. Press the
1/u button to turn the unit ON.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the
4. Press the
^ button.
5. Check the level B of the oscilloscope's waveform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following:
Confirm the following:
• A/B x 100 = less then ± 22 (%)
• B = 1.3 ± 0.6 Vp-p
• B = 1.3 ± 0.6 Vp-p
1 track jump waveform
E-F Balance (1 Track Jump) check
oscilloscope
BD board
TP (FE)
TP (VC)
TP (VC)
+
–
–
symmetry
A
B
Within 4
±
1 Vp-p
oscilloscope
BD board
TP (RF)
TP (VC)
TP (VC)
+
–
–
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
level : 1.45
±
0.3 Vp-p
0V
Center of the waveform
B
Symmetry
A (DC voitage)
level : 1.3
±
0.6 Vp-p
oscilloscope
BD board
TP (TE)
TP (VC)
TP (VC)
+
–
–
TP
(VC)
(VC)
TP
(RF)
(RF)
TP
(TE)
(TE)
TP
(FE1)
(FE1)
TP (FE)
TP
(AGCCON)
(AGCCON)
MAIN board
PANEL board
CD SW board
TUNER unit
TRANS board
SUB TRANS board (RXD10AV)
SENSOR board
CONNECTOR board
BD board
MOTOR (SLIDE) board
MOTOR (TURN) board
3CH AMP board
FRONT AMP board
AUDIO board
LEAF SW board
TUNER unit is supplied as
the assembled block.
the assembled block.
Note:
Clear RF signal waveform means that the shape “
◊
” can be
clearly distinguished at the center of the waveform.
RF signal waveform
HCD-GRX90AV/RXD10AV
7-2. BLOCK DIAGRAMS
– CD SECTION –
– 19 –
– 20 –
• R CH: Same as L ch
• SIGNAL PATH
: CD
: Digital out
• SIGNAL PATH
: CD
: Digital out
OPTICAL PICK-UP BLOCK
DETECTOR
K
B+
A
D
C
B
E
F
A
D
C
B
1
4
2
5
5
10
6
38
39
41
42
2
1
45
47
LD DRIVE
Q101
36
37
LD
PD
XRST
FOK
23
27
FOCUS/TRACKING SERVO.
RF AMP
IC101 (1/2)
6
7
12
13
20
22
21
26
25
24
33
19
44
14
15
PD1
PD2
F
E
FEI
FEO
TEO
TEI
CLK
XLT
DATA
TA O
TA M
FE M
FE O
SENS2
SENS1
C.OUT
LOCK
RF O
27 23
15 16 17
10 11 12
75 8
7 9
100
93
86
89 • 90
X101
16.9344MHz
XTAI
•
XTAO
LOUT1
LOUT2
XRST
SCOR
SQSO
SQCK
SENS
DATA
XLAT
CLOK
DIGITAL SIGNAL PROCESSOR
IC103
RF
29 LOCK
CNIN
SEIN
SEIN
DATAO
XLTO
CLKO
MDP
FOK
21
S101
LIMIT
SPOD
9
LASER
DIODE
TRACKING
COIL DRIVE
27
15
16
FOCUS/TRACKING
COIL DRIVE
IC102 (1/2)
FOCUS
COIL DRIVE
26
18
17
2-AXIS
DEVICE
TRACKING
COIL
FOCUS
COIL
T+
F+
T–
F –
SLED
SERVO
IC101 (2/2)
SLED/SPINDLE
MOTOR DRIVE
IC102 (2/2)
14
16
6
SLED MOTOR
DRIVE
11
•
12
M
M102
SLED MOTOR
SPINDLE MOTOR
DRIVE
3
13
•
14
M
M101
SPINDLE
MOTOR
SL O
SL P
CD CLK
CD DATA
SENS2
SCOR
SQ DATA
SQ DATA
SQ CLK
SENS
XRST
XLAT
09
L-CH
R-CH
C
MAIN
SECTION
MUTE
(Page 23)
M
TABLE
SENSOR
IC702
TRAY SENS
OUT-OPEN
S801
OPEN/CLOSE
DET
OUT1
IN1
IN2
OUT2
M
M701
TURN
TURN
MOTOR
TBL.L
TBL.R
TURN
MOTOR DRIVER
IC701
7
DISC
SENSOR
IC703
ROTARY
ENCODER
S811
Q701
DISC SENS
ENC 1
ENC 2
ENC 3
2
4
7
2
10
M801
SLIDE
MOTOR
OUT2
OUT1
RIN
FIN
SLIDE
MOTOR DRIVER
IC801
LD IN
LD OUT
3
6
CD DIGITAL
71
D.OUT
1
OUT
OPTICAL
IC381
DOUT
IC381
HCD-GRX90AV/RXD10AV
– 21 –
– 22 –
– DECK SECTION –
IC611
R CH
HP101
PB HEAD
(DECK A)
(DECK A)
L
R
RV311
PLAYBACK
LEVEL
DECK A
IC601
R CH
L
R
RV301
PLAYBACK
LEVEL
DECK B
3
1
IC602
4
REC/PB
EQOUT
REC BIAS
BIAS OSC
T621, Q621, 622
ERASE HEAD
ERASE BIAS
46
48
B IN
A IN
16
PB-A/B
EQIN
38
36
RV301
REC LEVEL
39
RECOUT
BIAS SW
C
M
70
120
DOLBY
TYPE B
TYPE B
+7.5V
Q623
RIN
44
PB
24
18
20
22
40
25
PB OUT
LM ON/
OFF
BIAS ON/OFF
RM ON/OFF
ALC ON/OFF
PB L
REC L
PB A/B
NORM/HIGH
REC/PB/PASS
BIAS ON/OFF
RM ON/OFF
15
ALC ON/OFF
RELAY
09
B
MAIN
SECTION
LM ON/OFF
NORM/
HIGH
PAS
DOL
P
R
REC/PB HEAD
(DECK B)
X
DOLBY NR
IC301
IC301
DOLBY NR
HRPE101
RV341
REC
BIAS
32 33
23
NR ON/
OFF
NR ON/OFF
17
S1004
A CrO
2
S1008
B CrO
2
19
A 120/70
B 120/70
M
CAP MOTOR
CONTROL
Q336-343
CONTROL
Q336-343
SPEED
CONTROL
Q1001
SWITCH
Q335
RV1001
HIGH
SPEED
RV1002
NORMAL
SPEED
M1
CAPSTAN
MOTOR
CAPM CNT2
CAP M H / L
CAPM CNT1
REEL
DETECT
IC1001
A SHUT
B SHUT
REEL
DETECT
IC1002
S1001 (A PLAY)
+5V
S1002 (B PLAY)
A PLAY
B PLAY
A HALF
B HALF/REC A/REC B
S1003
(A HALF)
+5V
+5V
S1005
(REC A)
S1006
(B HALF)
S1009
(REC B)
(Page 23)
• R CH : Same as L ch
• SIGNAL PATH
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
• SIGNAL PATH
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
28 27
26
MS
MS OUT
B TRIG
A TRIG
TRIGGER
MOTOR
CONTROL
Q331-334
MOTOR
CONTROL
Q331-334
A DECK/
B DECK
PLUNGER
B DECK
PLUNGER
• PLUNGER SOLENOID is supplied
as the MECHANICAL BLOCK ASSY.
MAIN SECTION
MAIN SECTION
HCD-GRX90AV/RXD10AV
– 23 –
– 24 –
– MAIN SECTION –
FRONT L-OUT
SPE SIG
IIC DATA
IIC CLK
RESET
FRONT L IN
FRONT RELAY
CD POWER
STK MUTE
34
100
90
89
88
87
86
84
83
D503
RESET
SWITCH
Q501
RESET
IC502
+5.6V (STBY)
13
15
X613
16MHz
12
22
10
11
09
5
1
CD POWER
STK MUTE
48
54
50
50
51
52
49
ST DIN
STEREO
TUNED
ST CE
ST CLK
ST MUTE
ST DOUT
TC RELAY
TC MUTE
A PLAY SW
B PLAY SW
B PLAY SW
65
19
61
57
56
59
37
35
60
33
32
58
TBL L
TBL R
SCOR
T SENS
HOLD
SENS
XRST
CD CLK
CD DATA
DISC SENS
SQ CLK
SQ DATA
XLT
7
6
DBFB H/L
LINE MUTE
30
29
IIC DATA
IIC CLK
RESET
AC CUT
(CHECK)
X-OUT
X-IN
XC-IN
XC-OUT
X601
32.768KHz
MASTER CONTROL
IC501
3
F RELAY
WAKE UP
ST-BY LED/CLOCK OUT
82
81
80
79
76
73
73
72
PB A/B
R/PB PASS
BIAS
REC MUTE
NR ON/OFF
A SHUT
B SHUT
B HALF
A HALF
EQ H//N
CAP M H/L
CAPM CNT1
CAPM CNT2
CAPM CNT1
CAPM CNT2
A TRG
B TRG
AMS IN
AMS IN
493-LAT
493-DATA
493-CLK
RELAY
ST L
ST-DOUT
ST-CLK
ST-DIN
STEREO
TUNED
ST CE
ST-MUTE
L CH
TBL. L
TBL. R
SCOR
TRAY SENS
HOLD
SENS
X RST
CD CLK
CD DATA
DISC SENS
SQ CLK
SQ DATA
X LAT
B
DECK
SECTION
C
CD
SECTION
A SHUT
PB L
REC L
BIAS ON/OFF
B SHUT
RM ON/OFF
LM ON/OFF
REC/PB PASS
B HALF/REC A/REC B
A HALF
A PLAY
B PLAY
PB A / B
NORM/HIGH
NR ON/OFF
CAP M H/L
A TRG
B TRG
B TRG
MS OUT
38
3
1
2
(Page 22)
(Page 20)
POWER ON/OFF
2
POWER
D
POWER
SECTION
53
55
• R CH: Same as L ch
• SIGNAL PATH
: FM
: CD
: PB
: REC
: VIDEO/MD
• SIGNAL PATH
: FM
: CD
: PB
: REC
: VIDEO/MD
MD IN L
VIDEO/IN
(AUDIO)
L
MD/VIDEO
(AUDIO)
OUT L
71
70
69
68
67
66
OUT OPEN
ENC1
ENC2/DISC-LED
ENC3/UP-SW
LOAD IN
LOAD OUT
OUT-OPEN
ENC-1
ENC-2
ENC-3
ENC-3
LD IN
LD OUT
J101
(Page 25)
E
DISPLAY
SECTION
(Page 27)
68
69
66
67
65
1 2 3
2
30
42
58
57
41
36
38 39
72
MUTE
Q114
MIC
LEVEL
MIX
MIC
MIC
RV712
J711
63
47
78
77
75
74
85
18
39
DBFB
SWITCH
Q112,113
SWITCH
Q112,113
33 32
R-CH
EQ
AMP
SELECT
SWITCH
SWITCH
MICON
INTERFACE
INTERFACE
IC712(1/2)
IC712(2/2)
VOLUME
IC101(2/2)
IC101(2/2)
EQ
IC101(1/2)
IC101(1/2)
V
TC
TU
CD
MD
Lch
Lch
37
44
BASS FRQ.
Q111
MUTE SW
Q503
MUTE SW
Q502
TIMER LED
26
RY-SW
36
FL SW
42
STBY RELAY
43
PROTECTOR
27
FL SW ON/OFF
STANDBY RELAY
ON/OFF
ON/OFF
SPEAKER PROTECT IN
RY-SW
1
3
WAKE UP
STANDBY LED
TIMER LED
91
ALC
ALC ON/OFF
FM/AM TUNER
TUNER UNIT IS
SUPPLED AS THE
ASSEMBLED
BLOCK
TUNER UNIT IS
SUPPLED AS THE
ASSEMBLED
BLOCK
PL-DATA
PL-LAT
PL-LAT
25
PL-CLK
24
23
93
HP-MUTE
HP MUTE
L+R
64
DVD
60 KEY IN2
79
77
74
15
11
1
76
5
59
DOUT2
16
10
80
9
4
3
IC201
REAR L-IN
CENTER IN
17
SW
FRONT
REAR
SW
CENTER
DVD
TRIM
VOL
TRIM
VOL
TRIM
VOL
MCU INTERFACE
DATA SCK REQ
24
23
22
MUTE
Q191
MUTE
Q281, 282
SUPER
WOOFER
J191
REAR IN
CENTER IN
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