Sony XTL-W70 User manual

1
SERVICE MANUAL
US Model
Canadian Model
XTL-W70
•This set consists of the following units.
MOBILE COLOR TV
US/Canadian model
MONITOR XVM-W71
TUNER UNIT XT-992V
REMOTE COMMANDER RM-X170
ANTENNA VCA-114
– Continued on next page –
SPECIFICATIONS
Monitor
System Liquid crystal color display
Display Transparent TN LCD panel
Drive system TFT active matrix system
Picture size 154.1 ×87.0 mm, 177 mm
(6 1/8 ×3 1/2 in., 7 in.)
(w ×h, diagonally)
Picture segment336.960 (w 1440 ×h 234)
Speaker type ø36 mm (ø1 7/16 in.)
dynamic speaker
Power requirements
12 V DC car battery
(negative earth)
Current drain Approx. 1.0 A
Dimensions 190 ×127.5 ×26.6 mm
(7 1/2 ×5 1/8 ×1 1/16 in.)
(w ×h ×d)
Operating temperature
+5˚C ~ +45˚C
(41˚F ~ 113˚F)
Mass Approx. 450 g (1 lb)
TV tuner unit
Television system
NTSC
Color system TV: NTSC
Video: NTSC
Channel converge
VHF:2 CH ~ 13 CH
UHF:14 CH ~ 69 CH
Power requirements
12 V DC car battery
(negative earth)
Current drain Approx. 0.5 A
Output terminals
Video output: RCA pin 1 Vp-p,
75 ohm
Audio output:RCA pin –10 dBs,
10 kohm
Monitor output:Square 16 -pin
(exclusive)
Tuner unit: XT-992V Monitor : XVM-W71
Ver 1.0 2001. 07
Sony Corporation
e Vehicle Company
Shinagawa Tec Service Manual Production Group
9-873-250-01
2001G0400-1
© 2001. 7

2
TABLE OF CONTENTS
1. GENERAL
Location of Controls............................................................... 3
Getting Started........................................................................ 3
Watching a TV Programme .................................................... 4
Viewing the Wide Screen ....................................................... 4
Watching a Video.................................................................... 4
Listening to the TV/video Sound
with the Picture Off ................................................................ 5
Adjusting the Picture .............................................................. 5
Adjusting the Screen Brightness ............................................ 5
Using the Navigation System ................................................. 6
Listening to the TV/video Sound while Using
the Navigation System............................................................ 6
Connections ............................................................................ 7
2. DISASSEMBLY
2-1. Cabinet Assy, Monitor (Rear) ............................................ 8
2-2. Sw Board, Monitor Board .................................................. 8
3. ELECTRICAL ADJUSTMENTS
Monitor Section ...................................................................... 9
Tuner Unit Section ............................................................... 13
4. DIAGRAMS
4-1. Block Diagram –Monitor Section– .................................. 15
4-2. Block Diagram –Tuner Unit (Video) Section– ................ 16
4-3. Block Diagram –Tuner Unit (Audio) Section– ................ 17
4-4. IC Pin Descriptions .......................................................... 18
4-5. Printed Wiring Board –Monitor Section– ........................ 20
4-6. Schematic Diagram –Monitor Section (1/2)– .................. 22
4-7. Schematic Diagram –Monitor Section (2/2)– .................. 23
4-8. Printed Wiring Board –Monitor Switch Section – ........... 24
4-9. Schematic Diagram –Monitor Switch Section–............... 25
4-10. Printed Wiring Board –Tuner Section–............................ 26
4-11. Schematic Diagram –Tuner Section (1/3)– ...................... 28
4-12. Schematic Diagram –Tuner Section (2/3)–...................... 29
4-13. Schematic Diagram –Tuner Section (3/3)–...................... 30
5. EXPLODED VIEWS
5-1. Monitor Section ............................................................... 35
5-2. Tuner Section ................................................................... 36
6. ELECTRICAL PARTS LIST ....................................... 37
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Input terminals Video input (2 system): RCA pin 1Vp-p,
75 ohm
Audio input: RCA pin –10 dBs, 10 kohm
Antenna input (4 system): mini plug
Navigation input: Square 16 -pin
(exclusive)
RCA pin:
Video 1 Vp-p, 75 ohm
Audio (monaural)
–10 dBs, 10 kohm
Dimensions 202 ×30 × 140 mm (w ×h ×d)
(8 ×1 3/16 ×5 5/8 in.)
(w ×h ×d)
Mass Approx. 750 g (1 lb. 11 oz.)
Wirelessremote
Power requirements
AA (R6) battery × 2
Operable range Approx. 3 m (9.8 ft.)
Dimensions 60 ×19 ×166 mm
(2 3/8 ×3/4 ×6 5/8 in.)
(w ×h ×d)
Mass Approx. 125 g (4 oz.)
(including batteries)
TVantenna
Cord 5 m (16.4 ft.), 75 ohm
Suppliedaccessories
Wireless remote (1)
Power input cord (1)
Monitor cable (1)
TV antenna (1)
Parts for installation and
connections (1 set)
Mounting kit (1 set)
Design and specifications are subject to change
without notice.
XTL-W70
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANTRAPPORT
À LASÉCURITÉ!!
LESCOMPOSANTSIDENTIFIÉSP ARUNEMARQUE 0SURLES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES
SONTCRITIQUESPOUR LA SÉCURITÉ DEFONCTIONNEMENT .
NE REMPLACER CES COMPOSANTS QUE P AR DES PIÈCES
SONYDONTLESNUMÉROSSONTDONNÉS DANS CEMANUEL
OUDANSLESSUPPLÉMENTS PUBLIÉS P ARSONY .

3
XTL-W70
SECTION 1
GENERAL This section is extracted
from instruction manual.

4
XTL-W70

5
XTL-W70

6
XTL-W70

7
XTL-W70

8
XTL-W70 SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CABINET ASSY, MONITOR (REAR)
2-2. SW BOARD, MONITOR BOARD
1screws (2.6x5)
2screws (2.6x5)
5screws (M 2x5)
6screws (M 2x5
)
4bracket (w), stand
3screws (2.6x5)
7CN601
claw
8connector
9cabinet assy, monitor (rear)
1SW board
2CN104
6CN501
claws
S801
4screws (M2x5)
9MONITOR boar
d
8sheet (MAIN PC board)
5screws (M2x5)
7Removal the solders
3sheet

9
XTL-W70
+
–
NTSC pattern
generator
MONITOR OUT
Monitor
XVM-W71
Regulated D
C
power supply
ACC cord
Parking
VIDEO OUT
(75
Ω )
Tuner unit
XT-992V
INPUT (1)
(VIDEO)
Equipment Used
The measuring equipment below are used for these electrical
adjustments:
• Oscilloscope
• NTSC pattern generator
• Regulated DC power supply
• Digital voltmeter
Connection of Equipment
Unless otherwise specified, the measuring equipment should be
connected as shown below:
SECTION 3
ELECTRICAL ADJUSTMENTS
MONITOR SECTION
Setup for Adjustment
Set to the VISUAL STD mode.
The adjustment signal is a 5-step gray scale signal from a NTSC
pattern generator.
Input the gray scale signal into the tuner unit and connect an oscil-
loscope to TP9 on the MONITOR board. Check that the width
between the black and white levels of the gray scale signal is 0.74
Vp-p.
0.74Vp-
p
white
black
Setup to switch position:
DIMMER switch (S801) ...................................................... HIGH
5V Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect a digital voltmeter to TP22 on the MONITOR board.
3. Adjust RV201 so that the reading on the digital voltmeter is
5.27 ± 0.04 V.
Adjustment Location: See page 12.
Inverter Voltage Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect a digital voltmeter to TP206 on the MONITOR board.
3. Adjust RV601 so that the reading on the digital voltmeter is
6.80 ± 0.04 V.
Adjustment Location: See page 12.
γ2 Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect a digital voltmeter to TP519 on the MONITOR board.
3. Adjust RV405 so that the reading on the digital voltmeter is
2.48 ± 0.04 V.
Adjustment Location: See page 12.
RGB Gain Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect a digital voltmeter to TP517 on the MONITOR board.
3. Adjust RV407 so that the reading on the digital voltmeter is
1.89 ± 0.04 V.
Adjustment Location: See page 12.
γ0 Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect an oscilloscope to TP518 on the MONITOR board.
3. Adjust RV406 so that the reading on the digital voltmeter is
1.74 ± 0.04 V.
Adjustment Location: See page 12.
Bright Adjustment (1)
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect a digital voltmeter to TP516 on the MONITOR board.
3. Adjust RV408 so that the reading on the digital voltmeter is
2.09 ± 0.04 V.
Adjustment Location: See page 12.
VCOM Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect an oscilloscope to TP508 on the MONITOR board.
3. Adjust RV411 so that the reading on the digital voltmeter is
2.47 ± 0.04 V.
Adjustment Location: See page 12.

10
XTL-W70
Bright Adjustment (2)
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect an oscilloscope to TP405 on the MONITOR board.
3. Adjust RV408 so that the signal level in the 5th stage from the
top is the specified value A.
Specified value A: 1.90 ± 0.04 V
(Skip item 3 and start from item 4 when the value cannot be
completely adjusted.)
4. Adjust RV406 so that the signal level in the 1st stage from the
top is the specified value B.
Specified value B: 3.64 ± 0.02 V
5. Adjust RV407 so that the signal level in the 3rd stage fromthe
top is the specified value C.
Specified value C: 2.98 ± 0.02 V
6. Repeat items 3 to 5 and adjust the signal in the 5th, 1st and 3rd
stages.
B and R Level Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect an oscilloscope to TP405 on the MONITOR board.
3. Measure the black-to-black level.
4. Connect an oscilloscope to TP404 on the MONITOR board.
5. Adjust RV409 so that the black-to-black level Ais the same as
the level measured in item 3.
6. Connect an oscilloscope to TP406 on the MONITOR board.
7. Adjust RV410 so that the black-to-black level is the same as the
level measured in item 3.
A
C
B
1st
3rd
5th
A

11
XTL-W70
VCOM Amplitude Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale screen on the monitor screen.
2. Connect an oscilloscope to TP401 on the MONITOR board.
3. Adjust RV411 so that the level Aof the output waveform is
6.88 ± 0.02 Vp-p.
Adjustment Location: See page 12.
VCOM Bias Adjustment
Procedure:
1. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the gray scale on the monitor screen.
2. Connect an oscilloscope to TP401 on the MONITOR board.
3. Adjust RV412 so that the waveforms Aand Bmeet the
specified value.
specified value A: 5.20 ± 0.04 V
B: -1.68 ± 0.04 V
Adjustment Location: See page 12.
Freerun Frequency Adjustment
Procedure:
1. Set the input signal with no signal.
2. Press the TV/VIDEO button (S106) to the VIDEO mode.
3. Connect a frequency counter to TP16 on the MONITOR board.
4. Adjust RV902 so that the reading on the frequency counter is
15.37 ± 0.02 kHz.
Adjustment Location: See page 12.
H CEN Adjustment
Procedure:
1. Input the mono scope signal from a NTSC pattern generator.
2. Press the TV/VIDEO button (S106) to the VIDEO mode,
display the mono scope on the monitor screen.
3. Adjust RV901 so that the mono scope is displayed in
symmetrical pattern on the monitor screen.
Adjustment Location: See page 12.
A
A
0
V
B

12
XTL-W70
Adjustment Location:
RV410: B and R Level Adjustment
RV409: B and R Level Adjustment
RV407: RGB Gain,Bright2
Adjustment
RV201: 5V Adjustment
RV412: VCOM Bias Adjustment
RV411: VCOM,VCOM AMP Adjustment
RV601: Inverter Voltage Adjustment
RV902: Freerun
Frequency
Adjustment
RV901: H CEN Adjustment
RV405: GAMMA2 Adjustment
RV406: GAMMA0,Bright2 Adjustment
RV408: Bright1,2
Adjustment
– MONITOR BOARD (SIDE A) –
TP22
–MONITOR BOARD (SIDE B) –
TP517
TP518
TP519
TP401
TP508
TP406
TP206
TP16
TP405
TP516
TP404

13
XTL-W70
• Use the following equipment for the electrical adjustment.
Equipment
1Monitor TV (XVM-W71, etc.)
2Spectrum analyzer
3TV signal generator
4Digital voltmeter
5Oscilloscope
6Audio analyzer
7DC power supply
8Frequency counter
Equipment Connections
Connect the test equipment as shown in the figure below (unless
otherwise instructed) and perform the adjustment.
VCO Adjustment
Procedure:
1. No connection to ANT IN. (no signal state)
2. Connect a resistor (10 kΩ) between TP33 and +9 V (TP35).
3. Connect a spectrum analyzer to TP34 (with DC cut by a
capacitor (0.01 µF)).
4. Adjust T3 so that the waveform peak is 45.75 MHz ± 1 kHz.
5. After this adjustment, open TP34. (Disconnect the spectrum
analyzer.)
45.75 MHz
0.7 V
0.3 V 0.3 V
red
white (approx. 100%)
horizontal sync. signal burst signal (flat)
TV SG
set
POWER (CN4)
RF out
ANT IN
DC
power supply
TUNER UNIT SECTION
Color bar signal from TV signal generator
Setup during Adjustment
Use the video signal obtained from the TV signal generator as the
alignment signal, and check that this signal is within video output
signal standards.
Connection points: See page 14.
Adjustment points: See page 14.
2.5 Vp-p
0 V
Note: Small peaks (dips) coming out from the top of the
waveform are unacceptable.
RGB Decoder FO Adjustment
Procedure:
1. Without INPUT1, INPUT2 inputs (no signal input mode), short
the jumper wire between TP100 and GND.
2. Connect a frequency counter to TP61.
3. Adjust VR6 so that reading on frequency counter is
3.579545 MHz ± 100 Hz.
4. After this adjustment, remove the jumper wires.
AGC Adjustment
Procedure:
1. Set the TV SYSTEM switch to 1.
2. Input a color bar signal of 10ch (193.25 MHz) and 66 dBµV
(75 Ω OPEN).
3. Connect the digital voltmeter to TP42.
4. Adjust VR1 so that reading on the digital voltmeter is
3.0 ± 0.1 V.
AFT Adjustment
Procedure:
1. Input a color bar signal of 10ch (193.25 MHz) and 74 dBµV
(75 Ω OPEN).
2. Connect the oscilloscope to TP102.
3. Adjust T3 untill the waveform on the oscilloscope is 2.5 Vp-p.

14
XTL-W70
T3: VCO Adjustment
: AFT Adjustment
VR1: AGC Adjustmen
t
VR6: RGB Decoder FO Adjustment
VR4: RGB Decoder
input Level Adjustment
TP100
TP61
TP102 TP42
TP30
TP34
TP33
white blue
SYNC
TP111
124 3
RGB Decoder Input Level Adjustment
Procedure:
1. Input signal : PAL EBU color bar (INPUT 1 VIDEO)
2. Adjust VR4 so that the white peak 1(100% white) of
TP111 (B OUT) is at 1.0 Vp-p.
Connection Points andAdjustment Points:

15 15
XTL-W70
4-1. BLOCK DIAGRAM — MONITOR SECTION —
SECTION 4
DIAGRAMS
42
41
40
26
36
34
6
INT/
EXT
SW
SYNC
SEP
BGP
GEN
PAL/NTSC
CONTROL
Q910
GAMMA
AMP AMP
INV
19
21
24
RV405
GAMMA2
S101
POWER
RV406
GAMMA0
RV408
BRIGHT
S104 NAVI
SEARCH
S106 TV/VIDEO
S105
S108
27 29
BSUB
BRIGHT
RV409
RGB
AMP
RV407
V COM
AMP
RV411
V COM
AMP
RV412
30
RSUB
BRIGHT
RV410
31 28
13
14
2
3
11
15
35
12
2
6
13
5 1
2
4
39
8
6
70
71
10
7
4
11
28
33
35
36
37
57
58
59
60
32
65
50
49
44
43
38
47
20
21
22
BL B+
CONTROL
Q810,811
10
9
16
3
4
5
10
1
2
4
5
REG
Q607
BUFFER
Q803,804
INVERTER
Q601
INVERTER
Q602
REG
IC502
REG
IC510
REG
Q202
INVERTER
Q205
B+(+13V)
B+(+7.5V)
B+(+5V)
B–(–17V)
D206
D204
D205
D203
38
37 FILTER
POWER
ON/OFF
SWITCH
Q120
AMP
Q113
V COM BIAS
Q405,407,408
CONTROL
SIGNAL MIX
Q111,112
REMOTE
CONTROL
SENSOR
IC1
VOL
S103
S102
BUFFER
Q501
71 3
2
CN501
5
2 1 5 1
7
BL
DRIVE
Q604
BUFFER
Q901
3233
21
10
20
4
6
3
14
15
16
2
8
7
22
11
B+
(5V)
B+
(+13V)
B-
(-17V)
B-
AU-L
(AUDIO)
AU-R
(BEEP)
AU-G
SIRCS
BRIGHT
POWER SW
R IN
G IN
B IN
VBS
(SYNC)
PAL/NTSC
PICTURE OFF
+B
GND
MONITOR
IN
SP1
(SPEAKER)
D102 D132
BGP
Q110
S109
SELECT
S910
H.CENT
RV601
6.1V
S801
DIMMER
1CK 1Q
2Q
1CK
1CLR
B+
(AMP)
B+
(AMP)
B+
(SW B+)
BLKO
BLDI SPOI
HR
PS
CTR
SPIO
CLD
CLS
SPS
VR
MOD1
MOD2
LOWI
RESV
RESH
PDP
IN–
FB
OUT
OSCI
OSCO
FRPT
FRPV
VCS
SYNI
HSY
NTPC
MDW
MDN
PWM
VCC
OSC2 S6
S3
S2
K0
K1
K2
OSC1
OUT
VCC
B+(+5V)
B+(+7.5V)
B+(+.5V)
D1
POWER
D121
X110
480kHz
13
POWER AMP
IC501
WIDE MODE
SELECT
IC111
T201 T601
RV201
5.17V
DC-DC
CONVERTER
VCC IN–
FB
OUT DIMMER
DISCRIMINATION
IC801
D802
DIMMER
SENSOR
1
2
3
4
HOT
VR
VG
VB
COM
VGL
SPOI
HR
PS
CTR
HOT
NC
GND
BACK
LIGHT
UNIT
LCD1
LIQUID
CRYSTAL
DISPLAY
MODULE
6
7
8
17
18
10
11
12
13
SPIO
14
CLD
15
CLS
25
SPS
26
VR
27
MODE1
28
MODE2
29
VSHA1(+5V)
VSHA2(+5V)
VSHL1(+5V)
VSHL2(+5V)
1
2
3
4
VGH(+13V)
32
VCC
24
VSS(–17V)
21
GND
5
GND
9
GND
16
V COM AMP
IC406
R OUT
G OUT
B OUT
24
INVERTER IC910
LCD TIMING CONTROL
IC901
B+
(SW B+)
DC-DC
CONVERTER
Q603
COMPARATOR
IC802
HIGH
AUTO
VIDEO INTERFACE,
LED DRIVE
IC407
• Signal path
:TV and External Video(AUDIO)
:NAVI(AUDIO)
:VIDEO
KEY IN MATRIX
IC110
CN901
AMP
IC902
34
B+
(+7.5V)
Q801
CN601
IC201
IC601

1616
XTL-W70
4-2. BLOCK DIAGRAM — TUNER UNIT (VIDEO) SECTION —
J5-1
INPUT 1
VIDEO
J6-1
INPUT 2
VIDEO
AUDIO
SECTION
VIDEO
SIMUL
V1
1
2
3 7 2
13
3
1
5
6
7
1
3
4VIDEO
SWITCH
IC19
V2
SYNC GENERATOR
IC31
X3
3.58MHz
XT
XT
C.
SYNC
RESET
BUF
Q90
5
12
14
4
VIDEO SWITCH
IC18 (1/2)
910 11
COMP
BUF
Q60 VR4
RGB
DECODER
INPUT
LEVEL
RGB
DECODER
FO
DL2 BUF
Q103
APC
ACC DEM
DL
AMP
MONITOR
OUT
Y/C
MIX
HUE
VXO
CHROMA
AMP
24
2 4 3 1
10
15
8
1112 14
23
32
Y
SYNC
IN
C
VR6
R
C. SYNC
G
B
30
RGB DECODER
IC24
X4
3.58MHz
5 4
12
2
9 10 11
14
15
R
BUF
Q64
G
BUF
Q63
B
BUF
Q62
SYNC
BUF
Q61
RGB SWITCH
IC26
CBA
4
1
9 10 11
14
15
2
13
12
3
5
RGB SWITCH
IC25
CBA
12
15
14
13
CN3
VBS
R
G
B
6+B 12V
16 NT/PAL
3AUDIO
5BRIGHT
9PICTURE
SW
8POWER
SW
10 SIRCS
2BEEP
6162
46
13
58
59
52
51
64
11
45
POWER
ON/OFF
Q10
SYNC
SEP
IC17
SIRCS
Q77
COLHUE
V SYNC
H SYNC
H
43 V. MUTE
39 VD/RGB
38 SIMUL
NT/PAL
YS
ON/OFF
DISPLAY OFF
BRT
SIRCS
37
BEEP
SYSTEM CONTROL
IC12 (2/2)
8
67
RGB
CONTROL
IC22 (2/2)
BUF
Q42
BUF
Q40, 41
SIMULATION
BUFFER
Q53
12
13
11
IC21 (2/3)
+B
(S +12V)
AUDIO
CN2 (1/2)
2
10
13
14
15
7
12
VBS
R
G
B
BEEP
SIRCS
AUX(V)
J8-1
OUTPUT
VIDEO
9
6 3
BUFFER
Q78
J10-1
SONY NAVI
(NVX)
VIDEO
NAVI IN
4
AUDIO
SECTION
1
AUDIO
SECTION
2
AUDIO
SECTION
3
BEEP GEN
IC21 (1/3)
BEEP
CONTROL
IC22 (1/2)
RGB
CONTROL
IC21 (3/3)
VIDEO
BUF
IC20
SIRCS
CONTROL
IC23
9 8
3 1
1 6
4 1
27
1
•Signal path
:AUDIO
:VIDEO
(Page 17)
(Page 17)
(Page 17)
(Page 17)

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
549
BT SCL SDA
VOLTAGE
CONTROL
IC3
14
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
12 P.B
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
BA
4 5
X2
8MHz
ACC
R-CH
IC27
57
IC29 (1/2)
31
IC15
57
IC28
57
NOISE CANCELLER
IC33
VIDEO
18
19
14
11
12
3
1321
10
15
8 6
1 24
AFT
VR1
AGC
VIF/SIF PROCESSOR
IC13
POWER
ON/OFF
Q3, 4
B+
SWITCH
Q2
B+
(S +12V)
ACC
CN4
3
4ACC
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
15
4
SF1
IF AMP
Q20
IC29 (2/2)
57
MUTE
DRIVE
Q35
Q96
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)

1818
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 PALsetting (“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) )
• 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
HIC407 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.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W 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)
• 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)
• Powervoltageis dc14.4Vand fedwithregulated dcpower
supply from ACC CN4. (Tuner Section)
• Voltage is dc with respect to ground under no-signal
condition. (Tuner Section)
• Voltagesare takenwitha VOM (Inputimpedance10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
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: Partson thepattern facesideseen fromthe
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
• Semiconductor
Location
(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

2020
XTL-W70
4-5. PRINTED WIRING BOARD —MONITOR SECTION —•Refer to page 19 for Note and Semiconductor Location.
TP22