Sony HCD-XGV80 / LBT-XGV80 Service Manual ▷ View online
21
HCD-XGV80
VIDEO SECTION
Note :
1. VIDEO board is basically designed to operate without adjust-
ment. Therefore, check each item in order given.
2. Use HLV-402 (8-909-870-00) 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.
following checks.
Video Level Check (VIDEO BOARD)
Purpose
This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.
Purpose
This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.
Procedure:
1. Connect oscilloscope to VIDEO output.
2. Load a disc HLV-402 (8-909-870-00) playback.
3. Check that the video level is 1.0
1. Connect oscilloscope to VIDEO output.
2. Load a disc HLV-402 (8-909-870-00) playback.
3. Check that the video level is 1.0
± 0.1 Vp-p.
J721
VIDEO OUTPUT
VIDEO OUTPUT
75
Ω
Oscilloscope
set
1.0 ± 0.1 Vp-p
(WHITE 100%)
22
HCD-XGV80
SECTION 7
DIAGRAMS
7-1. CIRCUIT BOARD LOCATION
Five screws (BVTT 3x6)
SUB AMP board
MAIN board
TUNER board
TC-B board
HEADPHONE board
CD-R board
FRONT INPUT board
KEY board
PANEL VR board
MIC board
MIC VR board
DOOR SW board
MOTOR board
LED board
BD board
SENSOR board
CD-L board
TC-A board
GAME board
PANEL FL board
TRANS board
SUB TRANS board
TUNER PACK (FM/AM TUNER UNIT)
PA board
VIDEO board
ALBUM board
23
23
HCD-XGV80
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.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• 5 : fusible resistor.
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
•
• X : parts extracted from the component side.
•
: Pattern from the side which enables seeing.
(The other layers´ Patterns are not indicated.)
• Indication of transistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
BD board section and VIDEO board section.
no mark: CD PLAY
Other board section
no mark: TUNER (FM/AM)
( ): TAPE PLAY
< >: TAPE REC
[ ]: CD PLAY
BD board section and VIDEO board section.
no mark: CD PLAY
Other board section
no mark: TUNER (FM/AM)
( ): TAPE PLAY
< >: TAPE REC
[ ]: CD PLAY
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
: TUNER (FM/AM)
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G
: RECORD
J
: CD PLAY
N
: MIC INPUT
g : VIDEO
• Abbreviation
MX
: Mexican
E51
: Chilean and Peruvian
SP
: Singapole
Note:
The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
C
B
These are omitted.
E
Q
r
WAVEFORMS
– MAIN BOARD –
– BD BOARD –
– PANEL FL BOARD –
1
IC501 qa (XC-OUT)
2
IC501 qd (X-OUT)
3
CN321 2
TAPE REC only
4
CN321 3
TAPE REC only
3.0Vp-p
32KHz
VOL/DIV : 1V AC
TIME/DIV : 10 µsec
TIME/DIV : 10 µsec
VOL/DIV : 1V AC
TIME/DIV : 50nsec
TIME/DIV : 50nsec
VOL/DIV : 10V AC
TIME/DIV : 5 µsec
TIME/DIV : 5 µsec
VOL/DIV : 10V AC
TIME/DIV : 5 µsec
TIME/DIV : 5 µsec
2.0Vp-p
16MHz
24Vp-p
18 µsec
36Vp-p
18 µsec
1
IC601 is (X OUT)
VOL/DIV : 1V AC
TIME/DIV : 0.2 µsec
TIME/DIV : 0.2 µsec
4MHz
3.0Vp-p
– VIDEO BOARD –
1
IC103 qg (RFAC)
2
IC103 qh (FE)
3
IC103 qk (TE)
VOL/DIV : 0.2V AC
TIME/DIV : 0.5µsec
TIME/DIV : 0.5µsec
VOL/DIV : 0.2V AC
TIME/DIV : 0.2msec
TIME/DIV : 0.2msec
VOL/DIV : 1V AC
TIME/DIV : 0.2msec
TIME/DIV : 0.2msec
1.2 Vp-p
0.15 Vp-p
0.7 Vp-p
5
Q301 E
6
IC307 6 (VOUT)
1.0 Vp-p
H
0.8 Vp-p
H
0.8 Vp-p
H
1
IC505 (XTAO)
150
2
IC505 (CLKB)
207
3
IC505 (RFAC)
173
2.5 Vp-p
33.8688 MHz
2.8 Vp-p
27 MHz
VOL/DIV : 1V AC
TIME/DIV : 20nsec
TIME/DIV : 20nsec
VOL/DIV : 1V AC
TIME/DIV : 20nsec
TIME/DIV : 20nsec
VOL/DIV : 0.5V AC
TIME/DIV : 20 µsec
TIME/DIV : 20 µsec
VOL/DIV : 0.5V AC
TIME/DIV : 20 µsec
TIME/DIV : 20 µsec
4
IC505 6 (EPSIG)
VOL/DIV : 0.5V AC
TIME/DIV : 20 µsec
TIME/DIV : 20 µsec
VOL/DIV : 0.2V AC
TIME/DIV : 0.5 µsec
TIME/DIV : 0.5 µsec
0.8 Vp-p
• Abbreviation
MX
: Mexican
E51
: Chilean and Peruvian
SP
: Singapole
HCD-XGV80
24
24
7-2. BLOCK DIAGRAMS
– CD SERVO SECTION –
VO1-
VO1+
4
3
11
10
1
27
26
32
31
35
34
1
2
5
10
E
B
C
D
A
PD1
PD2
I1-6
I5-10
LD
PD
+4.5V
F
A
VCC
VCC
VCC
VCC
B
C
D
RF
SUMMING
AMP
∑ A-D
FOCUS
ERROR AMP
RF EQ
AMP
DC
AMP
VDC
BUFFER
TRACKING
ERROR AMP
RFAC
AC_SUM
EQ_IN
RFDCO
RFDCI
FE
FEI
RF AMP,
FOCUS/TRACKING ERROR AMP
IC103
TE
VDC
E
F
F I-V AMP
E I-V AMP
LD
DRIVE
Q101
APC LD
AMP
APC PD
AMP
LD
LD
PD
LASER DIODE
IN3+
IN4
VREF
IN3-
VO3+
VO3-
IN2+
T+
T-
F+
F-
IN2-
IN1+
IN1-
8
STBY
DATA DECODERR,
D/A CONVERTOR
IC506
VIDEO AMP
IC307
LPF
IC102
D/A
CONVERTOR
IC504
SDRAM
IC507
ROM
IC508
VO4+
VO4-
M101
SPINDLE
MOTOR
MOTOR
DRIVE
MOTOR
DRIVE
COIL
DRIVE
VO2-
VO2+
COIL
DRIVE
M
M
M102
SLED
MOTOR
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC102
TRACKING
COIL
S101
(LIMIT)
ON: when the optical pick-up
is inner position.
FOCUS
COIL
OPTICAL PICK-UP BLOCK
(A-MAX.3)
SW
PD
TE
LD-ON
FE
RFDC
I-V AMP
56
55
47
52
Q102
RFC
DI
CLK
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
WE
CAS
RAS
BA0
CLK
LDQM
UDQM
SI
SO
SCK
SRQ
SOK
SCS
RST
SYS RST
NVOEL
CSIA
Y
CPSIG
AUDXCLKO
MCLK
LAT
CLK
BLK
LRCK
LOUT
CD-L
R-CM
VCD-VIDEO
VCC
A+5V
(SW)
VDD
ROUT
DATA
DATA
AUDDTO0
AUDLRCK
AUDBCK
GPIO11
DRDQM1
DRDQM0
DRCK
DRBS
DRRAS
DRCAS
DRWEL
8-15
0-7
0-15
RST
RST
DATA
CLK
GPIO14
SSTP
FRDR
FFDR
TRDR
TFDR
SRDR
SFDR
VC
CE
DE
SE
TE
FE
RFDC
RFAC
XTSL
MDP
GPIO9
XTAO
XTAI
CLKB
CLKA
GPIO13
GPIO12
LD
X501
33.8688MHz
X502
27MHz
A0-A9
DRDAT0
I
DRDAT15
DRADR0
I
DRADR10
DQ0-DQ15
A0-A16 DQ0-DQ7
CONTROL
I/F
STB
IN
OUT
+4.5V
(IC103)
+2.5V
D+5V
(SW)
+3.3V
+3.3V
REG
Q581
SQ-DATA
SQ-CLK
V-MUTE
CD-DATA
XLT
CD-CLK
SCOR
HOLD
XRST
RST
SRQ
SCS
SOK
SCK
SO
SI
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (1/4)
CD-DSP,
DIGITAL SERVO,
MPEG DECODER, DAC
IC505
MTR-CTRL1
MTR-CTR2
M
TABLE MOTOR DRIVER
IC201
OUT2
OUT1
IN2
IN1
M201
(TABLE)
DISC TABLE
SENSOR
IC202
BU UP/DW SW
S201
(UP SWITCH)
TBL-SENS
MOTOR
DRIVE
49
48
45
44
LED-DISK 47
1
9
3
7
LED DRIVE
Q201
D201
(DISC No.)
Q412
Q411
Q370
DAC
DAC
To MAIN
SECTION
(Page 26)
To MAIN
SECTION
(Page 26)
A
B
RIPPLE FILTER
Q201
+2.5V REG
IC201
+3.3V REG
IC202
+2.5V
(
(
LPF
Q302
6
13
22
7
8
9
15
26
16
18
12
14
2
28
29
17
23
22
5
9
3
4
6
12
11
135
143
142
141
140
138
137
165
161
133
189
24
150
149
207
206
164
160
173
16
15
14
13
2
3
1
7
8
5
6
5
3
7
1
201
204
203
26
205
162
163
10
30
29
28
13 14 15 16 18 19
16
73
68
72
76
70
77
78
74
7
6
2
3
6
5
33
24
17 18 20 38 15 39
81
AO4
AO6
AO3
AO5
RST
2,4,5,7,8,10,11,13,
42,44,45,47,48,50,51,53
42,44,45,47,48,50,51,53
2-12,23,
25-31
25-31
13-15,
7-21
7-21
23-26,
29-34
29-34
34-37,
39-45
39-45
49-56,
59-66
59-66
35
40
36 37
19
32
43
1
3
• R-ch is omitted due to same as L-ch.
• Signal Path
• Signal Path
: CD PLAY (ANALOG)
: VIDEO
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