Sony XTL-W70 Service Manual ▷ View online
17
17
XTL-W70
4-3. BLOCK DIAGRAM — TUNER UNIT (AUDIO) SECTION —
R-CH
R
J5-2,3
L
INPUT 1
AUDIO
R-CH
R
J6-2,3
L
INPUT 2
AUDIO
T3
VCO
AFT
TUNER BLOCK
TU1
IN
IF2 11
AGC
VCO
VCO
1
5
4
9
BT
SCL
SDA
VOLTAGE
CONTROL
IC3
1
4
B+
(S +12V)
VIDEO
DET
EQ
AMP
RF
AGC
HPF
FM
DET
HPF
VCA
GATE
PULSE
DET
LPF
PILOT
CANCEL
CF1
1st SIF IN
CF2
5.5MHz
VIDEO
AMP
Q24
SYSTEM CONTROL
IC12 (1/2)
36
42
40
60
44
AFT
VIDEO1
VIDEO2
VOL
S. MUTE
29
RESET
21
XIN
22
XOUT
14 PLL DATA
15 PLL CLK
15 PLL CLK
12 P.B
49 POWER
49 POWER
1
2
10
TONE
AMP
Q30, 31
RESET
IC1
LEVEL
DETECT
Q32
VOL
CONTROL
IC16
R-CH
LEVEL
ADJ.
Q33
12
9 10
7
4
8
14
13
15
AUDIO SWITCH
IC14
B A
4
5
X2
8MHz
ACC
R-CH
IC27
5
7
IC29 (1/2)
3
1
IC15
5
7
IC28
5
7
NOISE CANCELLER
IC33
VIDEO
18
19
14
11
12
3
13
21
10
15
8
6
1
24
AFT
VR1
AGC
AGC
VIF/SIF PROCESSOR
IC13
POWER
ON/OFF
Q3, 4
B+
SWITCH
Q2
B+
(S +12V)
ACC
CN4
3
4
ACC
R-CH
P.B
ACC
POWER
CN2 (2/2)
J10-2
3
AUDIO
SONY NAVI
(NVX)
AUDIO
NAVI IN
+9V REG
IC4
B+
(S +9V)
B+
(S +5V)
ACC
1
3
5V REG
IC2
1
3
+5V
REG
Q1
B+
(+5V)
ACC
S. MUTE
DRIVE
Q72, 73
MUTE
Q81
MUTE
Q80
R-CH
R
J8-2,3
L
OUTPUT
AUDIO
AUDIO
SIMUL
V2
V1
1
4
SF2
1
5
4
SF1
IF AMP
Q20
IC29 (2/2)
5
7
MUTE
DRIVE
Q35
Q96
MUTE
MUTE
• R-ch : same as L-ch.
VIDEO
SECTION
2
VIDEO
SECTION
3
VIDEO
SECTION
1
VIDEO
SECTION
4
• Signal path
:AUDIO
:VIDEO
(Page 16)
(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-W71 is connected to CN3 (MONITOR
OUT) of Tuner Unit (XT-992V) 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-W71) (Monitor Section)
Power voltage is dc 14.4 V from ACC cord of the Tuner
Unit and fed with regulated dc power supply.
(XVM-W71) (Monitor Section)
• CN101 of XVM-W71 is connected to CN3 (MONITOR
OUT) of Tuner Unit (XT-992V) 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-W71) (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-W71) (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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