Sony XTL-W70 (serv.man2) Service Manual ▷ View online
17
17
XTL-W70
4-3. BLOCK DIAGRAM — TUNER UNIT (AUDIO) SECTION —
INPUT1
AUDIO
L
-2
CN2 (2/2)
J10-2
J5-2,3
AUDIO
AUDIO
R-CH
R-CH
R-CH
NAVI IN
SONY NAVI
(NVX)
INPUT2
AUDIO
J6-2,3
R
-3
L
-2
R
-3
OUTPUT
AUDIO
J8-2,3
L
-2
R
-3
ANT IN
J1
TRAP
T1,2
AGC
VR1
VCO
AFT
VIDEO
DET
RF
AGC
HPF
T3
VOLTAGE
CONTROL
IC3
B+
(S +9V)
3
CN4
P.B
ACC
3
4
6
7
3
1
15
11
1
4
1
7
47
35
14
15
42
40
60
44
29
21
22
4
5
12
49
4
8
4
3
11
12
13
1
9 4 5
14
9 10 6
13
18
19
D6
D2
EQ
IN
VIDEO
VDET
CF1
14
21
X2
8MHz
RESET
IC1
CF3
6MHz
CF2
5.5MHz
EQ
AMP
FM
DET
HPF
VCA
PAUSE
DET
LATCH
Q20,21
VIDEO
AMP
Q24
LATCH
Q22,23
LPF
GATE
PILOT
CANCEL
2
1
24
1
10
1
3
1
3
POWER
ON/OFF
Q3,4
B+
SWITCH
Q2
D5
FU1
3.15A
+5V
REG
Q1
AUDIO MUTE
DRIVE
Q72,73
TONE
AMP
Q30,31
LEVEL
DETECT
Q32
B+
(+5V)
POWER
MUTE
DRIVE
Q35
Q96
MUTE
AUDIO
MUTE
Q80
MUTE
Q81
SIMUL
X2
2nd
SIF
SIF
FM
DET
X1
X0
X
B A
INH
R-CH
R-CH
IC15
5
7
SYSTEM CONTROL
IC12 (2/2)
VIDEO
V1
V2
UK/CCIR
AFT
PLL DATA
PLL DATA
PLL CLK
P.B
POWER
VIDEO1
VIDEO2
VOL
S.MUTE
RESET
XIN
XOUT
R-CH
LEVEL
ADJ
Q33
Q33
B+
(S +9V)
B+
(S +12V)
B+
(S +5V)
IC29 (1/2)
IC29 (2/2)
5
7
5
7
IC27
IC28
TUNER BLOCK
TU1
VF/SIF PROCESSOR
IC13
IN
BT
SCL
SDA
IF2
AGC
SF1
VIF
VCO
MIX
VCO
VIF
RF
AGC
AGC
RF AGC VR
AFT
10
8
3
Q106
12
NF
OUT
NOISE CANCELLER
IC33
AUDIO
VOLUME
CONTROL
IC16
6
+9V REG
IC4
+5V REG
IC2
AUDIO SWITCH
IC14
VIDEO
SECTION
3
VIDEO
SECTION
2
VIDEO
SECTION
4
• Signal path
: VIDEO
: AUDIO
: VIDEO
: AUDIO
• R ch : same as L-ch.
(Page 16)
(Page 16)
(Page 16)
18
18
XTL-W70
Pin No.
Pin Name
I/O
Pin Description
53
MON A
O
Test setting output
54
MON B
O
Test setting output
55
MON C
O
Test setting output
56
MON D
O
Test setting output
57
CLS
O
Clock signal output for gate driver
58
SPS
O
Reset signal output for gate driver
59
VR
I
Scanning setting signal input for gate driver
60
MOD1
O
Control signal for gate driver
61
TCLK
I
Test setting input Fixed at “L”.
62, 63
GND
—
Ground pin
64
GPS
O
Signal output for gate power supply
65
LOWI
I
Control signal input for gate driver
66
ABC
I
Input for out setting Fixed at “L” in this set.
67
VDD
—
Power supply pin
68
GND
—
Ground pin
69
DVTC
I
Test setting input Fixed at “H”.
70
BLKI
I
Screen position adjustment signal input
71
BLKO
O
Screen position adjustment signal output
72
SYNO
O
Composite synchronizing signal output
4-4. IC PIN DESCRIPTIONS
• IC901 LZ9GJ24 (LCD TIMING CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
VIN
I
Vertical synchronizing signal input (positive polarity)
2
CVOP
O
Vertical synchronizing separation signal output
3
MON E
O
Test setting output
4
HSY
I/O
Horizontal synchronizing signal input/output (negative polarity)
5
VDD
—
Power supply pin
6
FRPT
O
Polarity inversion signal output for equal direction electrode
7
SYNI
I
Composite synchronizing signal input
8
FRPV
O
Polarity inversion signal output for video signal
9
GND
—
Ground pin
10
VCS
O
Mask signal output for normal mode
11
NTPC
I
Signal input for NTSC or PAL setting (“H”: NTSC, “L”: PAL)
12
VSY
I/O
Vertical synchronizing signal input/output Not used in this set. (Open)
13
HRVC
I
Signal input for horizontal scanning direction setting Fixed at “H” in this set.
14
VRVC
I
Signal input for vertical scanning direction setting Fixed at “L” in this set.
15
CLKC
I
Signal input for clock and synchronizing signal in/out setting Fixed at “H” in this set.
16
MDS
I
Signal input for display mode setting Fixed at “H” in this set.
17
GND
—
Ground pin
18
EXCL
I/O
Clock signal input/output Not used in this set. (Open)
19
GND
—
Ground pin
20
MDW
I
Signal input for display mode setting
21
MDN
I
Signal input for display mode setting
22
PWM
O
Backlight adjustment light control signal output
23
MON F
O
Test setting output
24
VSWC
I
VSWO signal out control input Fixed at “H” in this set.
25
VSWI
I
Video system select signal input Fixed at “H” in this set.
26
VSWO
O
Video system select signal output
27
VDD
—
Power supply pin
28
SPOI
I/O
Start signal input/output for source driver
29
GND
—
Ground pin
30
PCP
O
Test setting output Not used in this set. (Open)
31
CLOC
I
EXCL terminal out mode select signal input Fixed at “H” in this set.
32
MOD2
O
Control signal output for gate driver
33
HR
O
Horizontal scanning setting signal output for source driver
34
IHR
O
Horizontal scanning setting signal output for source driver
35
PS
O
Control signal output for source driver
36
CTR
O
Control signal output for source driver
37
SPIO
I/O
Start signal input/output for source driver
38
PDP
O
Phase comparation signal output
39
GND
—
Ground pin
40
MON
O
Test setting output
41, 42
GND
—
Ground pin
43
OSCO
O
Clock oscillation circuit signal output
44
OSCI
I
Clock oscillation circuit signal input
45
VDD
—
Power supply pin
46
GND
—
Ground pin
47
CLD
O
Clock signal output for source driver
48
TST1
I
Test setting input Fixed at “H”.
49
RESH
I
Horizontal counter reset signal input
50
RESV
I
Vertical counter reset signal input
51
TST2
I
Test setting input Fixed at “H”.
52
TEST
I
Test setting input Fixed at “H”.
19
19
XTL-W70
Ref. No.
Location
D1
I-6
D120
B-7
D121
B-7
D602
D-3
D801
A-7
D902
H-2
D903
G-2
D906
F-1
IC1
I-9
IC110
B-7
IC111
B-6
IC406
D-8
IC407
E-7
IC501
C-13
IC601
E-4
IC801
A-8
IC901
G-2
IC902
H-1
IC910
G-3
Q110
B-6
Q120
C-9
Q405
D-9
Q407
D-9
Q408
D-9
Q501
B-11
Q601
B-5
Q602
A-4
Q607
E-3
Q901
G-1
Q910
H-3
• Semiconductor
Location
(MONITOR BOARD
(SIDE B) )
(MONITOR BOARD
(SIDE B) )
• Waveforms
— Monitor Board —
3
1
2
1.0Vp-p
IC407
ef
5.0Vp-p
IC407
eh
IC407
r;
IC407
ra
IC407
rs
4
1.0Vp-p
5
1.0Vp-p
6
1.0Vp-p
5.0Vp-p
H
H
H
H
H
H
IC407
eg
• Waveforms
— Tuner Board —
1
2
8MHz
IC12
wa
(X IN)
2.2Vp-p
0.9Vp-p
3.58MHz
IC24
4
(VXO1)
3
3.1Vp-p
3.5MHz
IC31
6
(XT)
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for 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.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• CN101 of XVM-W70 is connected to CN3 (MONITOR
OUT) of Tuner Unit (XT-993V) with a monitor cable.
Power voltage is dc 14.4 V from ACC cord of the Tuner
Unit and fed with regulated dc power supply.
(XVM-W70) (Monitor Section)
Power voltage is dc 14.4 V from ACC cord of the Tuner
Unit and fed with regulated dc power supply.
(XVM-W70) (Monitor Section)
• CN101 of XVM-W70 is connected to CN3 (MONITOR
OUT) of Tuner Unit (XT-993V) with a monitor cable.
Voltage and waveforms are measured at input the color
bar signal from INPUT 1 VIDEO (J5-1) jack of the Tuner
Unit. (XVM-W70) (Monitor Section)
Voltage and waveforms are measured at input the color
bar signal from INPUT 1 VIDEO (J5-1) jack of the Tuner
Unit. (XVM-W70) (Monitor Section)
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC CN4. (Tuner Section)
• Voltage is dc with respect to ground under no-signal
condition. (Tuner Section)
• 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. (Monitor section)
F
: TV and External Video (AUDIO)
J
: NAVI (AUDIO)
c
: VIDEO
• Signal path. (Tuner section)
L
: VIDEO
F
: AUDIO
for printed wiring boards:
• Y
: parts extracted from the conductor side.
•
a
: Through hole. (Monitor, Monitor Switch
Sections.)
•
z
: Through hole. (Tuner section)
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
• Semiconductor
Location
(MONITOR BOARD
(SIDE A) )
(MONITOR BOARD
(SIDE A) )
Ref. No.
Location
D122
H-8
D123
H-8
D201
E-11
D203
E-10
D204
F-10
D205
F-10
D206
F-9
D208
E-11
D550
B-9
D802
A-7
D803
A-5
D804
A-5
D810
B-8
D811
A-8
D904
H-2
D905
G-1
IC201
E-12
IC502
B-10
IC510
C-10
IC802
A-6
Q111
H-8
Q112
H-8
Q113
H-9
Q202
D-11
Q205
E-11
Q603
A-5
Q604
A-5
Q801
A-7
Q803
B-5
Q804
A-5
Q810
B-8
Q811
B-8
20
20
XTL-W70
4-5. PRINTED WIRING BOARD — MONITOR SECTION — • Refer to page 19 for Note and Semiconductor Location.
TP22
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