Sony XTL-75V Service Manual ▷ View online
13
γ
2 Adjustment
Adjustment Procedure:
1. Display the gray scale on the monitor screen.
2. Connect a oscilloscope to TP (G) on the G board.
3. Adjust RV408 so that the white level becomes 3.6 V.
1. Display the gray scale on the monitor screen.
2. Connect a oscilloscope to TP (G) on the G board.
3. Adjust RV408 so that the white level becomes 3.6 V.
R Sub Bright Adjustment
Adjustment Procedure:
1. Display the gray scale on the monitor screen.
2. Connect a oscilloscope to TP (R) on the G board.
3. Adjust RV403 so that the third step from the bottom becomes
1. Display the gray scale on the monitor screen.
2. Connect a oscilloscope to TP (R) on the G board.
3. Adjust RV403 so that the third step from the bottom becomes
1.2 V.
Adjsutment Location:
3.6 V
GND
1.2 V
GND
B Sub Bright Adjustment
Adjustment Procedure:
1. Display the gray scale on the monitor screen.
2. Connect a oscilloscope to TP (B) on the G board.
3. Adjust RV404 so that the third step from the bottom becomes
1. Display the gray scale on the monitor screen.
2. Connect a oscilloscope to TP (B) on the G board.
3. Adjust RV404 so that the third step from the bottom becomes
1.2 V.
Note:
After all adjustments finished, enter connect the PAL pattern generator to
check that a picture appears.
check that a picture appears.
1.2 V
GND
RV401
V COM
AMPLITUDE
Adjustment
RV404
B SUB
B SUB
BRIGHT
Adjustment
RV406
RGB
AMPLITUDE
Adjustment
RV409
V COM BIAS
Adjustment
RV403
R SUB BRIGHT
Adjustment
RV405
BRIGHT
Adjustment
RV407
γ
0
Adjustment
RV408
γ
2
Adjustment
– G BOARD (Side A) –
TP (BRIGHT)
C424
TP (R)
TP (COM)
TP (G)
TP (B)
– G BOARD (Side B) –
TP415
14
MEMO
15
15
XTL-75V
LIQUID CRYSTAL
DISPLAY MODULE
VIDEO INTERFACE,
LIQUID CRYSTAL
DISPLAY DRIVER
DISPLAY DRIVER
IC403
05
VR
VG
VB
FRPT
COM
FRPV
SYN
HSY
VSY
MODN
MODW
VGH (+13V)
VSH (+5V)
HRV
VRV
CLKC
MODS
VGL (–16V)
NTP
VCS
+9V
D711
LED 4
BZ101
(BUZZER)
BEEP OUT
EEPROM
IC111
X100
10MHz
SIRCS SIGNAL
SELECT SWITCH
IC106
SYSTEM CONTROLLER
IC110 (1/2)
MICON VDD
D126
SP701
(SPEAKER)
VGH (+13V)
+5V
VGL (–16V)
R
G
B
SYNC
HSY
VSY
AUDIO L
TO
TV TUNER UNIT
(XT-991V)
CN703 (1/2)
CN703 (2/2)
AUDIO R
IC401 (1/2)
6
2
BGP
RIN
INT/
EXT
SWITCH
V COM AMP
IC402
SYNC BUFFER
Q517
AUDIO AMP
IC101
POWER AMP
IC105
MUTING
Q112
MUTING
CONTROL SWITCH
Q113
RESET SIGNAL
GENERATOR
IC108
REMOTE CONTROL
RECEIVER
IC701
SIRCS
BUFFER
Q701
MULTI-VIBRATOR
IC107 (1/3)
LED DRIVE
Q703
BUZZER DRIVE
Q102
S702
(RESET)
MUTING
Q114
SYNC BUFFER
Q516
V COM BIAS
Q401 – 404
SYNC
SEP
BGP
GEN
GEN
RV408
GAMMA 2
GAMMA
AMP
BIN
GIN
ROUT
BOUT
COMOUT
COMAMP
GOUT
KO 0 – KO 3
K
I 0 – KI 3
SDA
SCL
S.MUTE
W
.MODE 1
W
.MODE 2
SYNC
OUT
SYNC
IN
GAMMA 2
29
31
5
6
1
2
3
1
6
7
51
POWER SW
32
SIRCS
SDAI
SDAO
23
24
X0
X1
SCL
54
REM SEL
64
5
PICTURE OFF IN
19
XRESET
20
7
10
38
37
26
42
41
INV
AMP
40
RV407
GAMMA 0
GAMMA 0
27
RV405
BRIGHT
BRIGHT
29
RV403
R SUB
BRIGHT
RV404
B SUB
BRIGHT
RV406
RGB
AMPLITUDE
RV401
V COM AMPLITUDE
RV409
V COM BIAS
SUBBR
TR
31
SUBBR
TB
30
RGBAMP
28
19
21
24
SYNC
SEP
SEP
11
10
9
8
6
7
36
34
35
SW
39
FRP
33
COMFRP
32
CE2
(PICTURE OFF)
CN702
2
POWER SW
9
XRESET
7
SIRCS
11
LEVEL SHIFT
Q701
BRIGHT
10
2
3
IC401 (2/2)
7
1
D130
41 – 38
37 – 34
LSW703, 704, 706 – 717
D718, LSW707
LSW703
(GREEN)
(AMBER)
LED A/G
Q709
LED DRIVE
Q708
LED DRIVE
Q710
REGULATOR
Q712
52
BUS SW 58
D719, LSW708
(GREEN)
(AMBER)
+9V
REGULATOR
Q711
LED BRIGHT
53
D721 – 725, LSW704,
LSW706, 709 – 717
(GREEN)
(AMBER)
•
SIGNAL PATH
: AUDIO
: VIDEO
V OFF
NAVI
OPEN/CLOSE
TV/VIDEO
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – AUDIO/VIDEO/MODE CONTROL Section –
16
16
XTL-75V
6-2.
BLOCK DIAGRAM – SENSOR/MOTOR/POWER SUPPLY Section –
05
SYSTEM CONTROLLER
IC110 (2/2)
POWER CONTROL
IC501
IC107 (2/3)
IC107 (3/3)
Q515
SWITCHING
Q506
ILLUMI
SWITCH
Q108
REFERENCE
VOLTAGE CONTROL
SWITCH
ACC
CN704
(POWER CONNECTOR)
7
ILLUMI
8
BATT
5
PARKING
2
CN701
TO
TV TUNER UNIT
(XT-991V)
+B (SW)
1
PICTURE OFF
POWER CNTL
ACC CHK
+B (SW) DET
VGH (+13V)
(LCD MODULE B+)
VGL (–16V)
(LCD MODULE B–)
–5V
(V COM AMP CIRCUIT B–)
OUT1
BATT B+
BATT B+
+5V
(MICON VDD)
F704
D110
F104
M21
(SLIDE)
S32
(SET BACK)
(ON : When the monitor base is set back.)
+5.6V
REGULATOR
IC103
SWITCHING
REGULATOR
Q510 – 512
ILLUMI SWITCH
CONTROL
Q514
INVERTER
STANDARD
FREQUENCY
BACK LIGHT
UNIT
OSC
Q911, 912
ERROR
AMP
PWM
COMPARATOR
OSC
OUTPUT
CIRCUIT
CIRCUIT
B+ SWITCH
Q109, 110
+9V
(MOTOR, PANEL CIRCUIT B+)
+9V
REGULATOR
IC102
+5V REGULATOR
Q702
ANGLE MOTOR
ROTATION DETECT
PH11
LEVEL SHIFT
Q11
DT1
33
30
17
AD BAT
9
PARKING 49
16
7
3
VCC
+IN1
RV502
9
6
POWER CONTROL
IC503
OUT
PRE DRIVE
Q502, 503
DC/DC CONVERTER
DRIVE
Q504
ERROR
AMP
PWM
COMPARATOR
OSC
OUTPUT
CIRCUIT
CIRCUIT
1
4
VCC
IN
5.35V
RV501
2
42
43
44
60
61
46
47
48
62
63
S31
(PUSH OUT)
(ON : When the monitor base is pushed out.)
S102
(MONITOR CLOSE DETECT)
S11
(MONITOR OPEN DETECT)
ANGLE MOTOR DRIVE
IC112
+9V
D121
OUT1
M11
(ANGLE)
OUT2
V.MO 0
V.MO 1
VSEN 1
VSEN 0
VSEN 2
H.MO 0
H.MO 1
HSEN 1
HSEN 0
HSEN 2
FW
RW
REGULATOR
Q106
MOTOR
DRIVE
VREF
8
5
17
20
19
M
SLIDE MOTOR
ROTATION DETECT
PH21
LEVEL SHIFT
Q21
SLIDE MOTOR DRIVE
IC113
+9V
OUT1
OUT2
FW
RW
REGULATOR
Q105
MOTOR
DRIVE
VREF
8
5
17
20
19
M
F401
F102
+5V REGULATOR
Q704
+5V
(LED B+)
+9V REGULATOR
IC104
+9V
(AUDIO CIRCUIT B+)
+5V REGULATOR
IC703
+5V
(SERIAL INTERFACE CIRCUIT B+)
+9V
(SENSOR CIRCUIT B+)
D508
D507
D506
D503
D504
D708
T601, 602
INVERTER
TRANSFORMER
T501
DC/DC CONVERTER
ACC B+
AD ACC
8
+7.5V
V COM AMP CIRCUIT,
LCD DRIVER (IC403) B+
+5V
LCD MODULE,
LCD DRIVER (IC403) B+
+5V
REMOTE CONTROL
RECEIVER (IC701) B+
2
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