Sony XVM-B62 Service Manual ▷ View online
13
XVM-B62
5-11-10. VCO Free Run Adjustment
Adjustment Method:
1) Select VCO Free Run from the FOR FACTOR MODE.
2) Connect frequency counter between TP508 (+) and TP502 (–).
3) Adjust so that the reading on the counter stands at the specified
Adjustment Method:
1) Select VCO Free Run from the FOR FACTOR MODE.
2) Connect frequency counter between TP508 (+) and TP502 (–).
3) Adjust so that the reading on the counter stands at the specified
value using the [INPUT/+] and [DIMMER/--] buttons.
Specified value: 15,734
± 50 Hz
Adjustment location: Main board
5-11-11. V Pos Adjustment
Adjustment Method:
1) Input mono scope signal from the NTSC pattern generator.
2) Select V Pos from the FOR FACTORY MODE.
3) Observe the mono scope screen on the monitor and adjust so that
Adjustment Method:
1) Input mono scope signal from the NTSC pattern generator.
2) Select V Pos from the FOR FACTORY MODE.
3) Observe the mono scope screen on the monitor and adjust so that
the screen is vertically symmetrical using the [INPUT/+] and
[DIMMER/--] buttons.
[DIMMER/--] buttons.
5-11-12. H Pos Adjustment
Adjustment Method:
1) Input mono scope signal from the NTSC pattern generator.
2) Select H Pos from the FOR FACTORY MODE.
3) Observe the mono scope screen on the monitor and adjust so that
Adjustment Method:
1) Input mono scope signal from the NTSC pattern generator.
2) Select H Pos from the FOR FACTORY MODE.
3) Observe the mono scope screen on the monitor and adjust so that
the screen is horizontally symmetrical using the [INPUT/+] and
[DIMMER/--] buttons.
[DIMMER/--] buttons.
5-12. FLICKER AND WHITE BALANCE
ADJUSTMENT
Conditions: TEST MODE
NTSC all white 30% and all white 50% signal inputs
DIMMER OFF
Aging to be kept for more than 30 minutes
DIMMER OFF
Aging to be kept for more than 30 minutes
5-12-1. Flicker Adjustment
Adjustment Method:
1) Set the LCD flicker checker near at the center of the LCD screen
Adjustment Method:
1) Set the LCD flicker checker near at the center of the LCD screen
(place where there is no OSD display).
2) Input NTSC all white 50% signal.
Adjust RV652 so as to obtain the specified value.
Specified value: 150 mV or less
Adjustment location: LCD screen
5-12-2. White Balance Adjustment
Adjustment Method:
1) Set the LCD flicker checker near at the center of the LCD screen
Adjustment Method:
1) Set the LCD flicker checker near at the center of the LCD screen
(place where there is no OSD display).
2) Input NTSC all white 30% signal.
3) Measure the LCD screen with a LCD color analyzer.
4) Using the [INPUT/+] and [DIMMER/--] buttons, adjust the values
3) Measure the LCD screen with a LCD color analyzer.
4) Using the [INPUT/+] and [DIMMER/--] buttons, adjust the values
of R-Sub BRT and B-Sub BRT in FACTORY MODE so that the
x and y values indicated on the analyzer are the specified values.
x and y values indicated on the analyzer are the specified values.
5) Input NTSC all white 50% signal.
6) Using the [INPUT/+] and [DIMMER/--] buttons, adjust the values
6) Using the [INPUT/+] and [DIMMER/--] buttons, adjust the values
of R-Sub BRT and B-Sub BRT in FACTORY MODE so that the
x and y values indicated on the analyzer are the specified values.
x and y values indicated on the analyzer are the specified values.
7) Repeat 2) to 6) until the x and y values are the specified values.
Specified value: All white 30%: x = 0.278
± 0.005
y = 0.283
± 0.005
All white 50%: x = 0.280
± 0.005
y = 0.285
± 0.005
Adjustment location: LCD screen
14
XVM-B62
Adjustment Location:
IC701
IC652
IC751
IC903
TP807
TP723
TP808
TP707
TP705
TP708
TP710
TP706
TP709
TP702
TP413
TP414
TP415
TP410
TP503
TP502
TP565
TP564
TP720
TP721
TP725
TP654
TP722
TP411
TP412
TP605
TP704
TP606
– MAIN BOARD – (SIDE A)
– MAIN BOARD – (SIDE B)
RV701
RV702
T701
CN404
RV652
CN701
S408
(TEST)
RV802
RV702: DC-DC CONVERTER FREQUENCY ADJUSTMENT
RV802: PLL FREQUENCY ADJUSTMENT
RV652: V COM VOLTAGE/POSITION, FLICKER ADJUSTMENT
RV701: 5V VOLTAGE ADJUSTMENT
XVM-B62
15
15
XVM-B62
6-1. BLOCK DIAGRAM — VIDEO SECTION —
SECTION 6
DIAGRAMS
63
64
13
40
14
43
22
2
20
1
19
3
16
17
23
18
48
14
16
15
17
16
18
17
15
63 64
47
54
34
39
35
46
57
7
1
3
5
2
4
52
53
VCO
I/N
VXO
RGB DECODER,
VIDEO PROCESSOR
IC501
V SYNC SELECT
IC503
SYSTEM CONTOL
IC401 (1/2)
Q503
TRAP
CN401
VD IN
SYNC
SEP
HH
KILL
V
COUNT
OSD
SW
OUTPUT
CONTROL
VIDEO RAM
CG
ROM
OSC
BRIGHT/
CONTRAST
SYNC
SEPARATOR
Q501,502
IC102
VIDEO SELECT
VD PULSE
SHAPE
Q505,512,513
C SYNC
BUFFER
BUFFER
IC804
H PULSE
SHAPE
Q506,507
DELAY
SWITCH
Q551
INVERT
RGB
OUT
OUT
G-Y
GEN
BPF/
ACC
R-Y/B-Y
DEMOD
MATRIX
26
21
19
19
36
28
31
32
5
3
7
1
H
COUNT
V
COUNT
DATA
SELECT
20
4
19
SW
SYNC
OUT
DELAY/
SHARP
6
5
CHARACTER GENERATER
IC751
HD
VIY
VD
RED
GREEN
BLUE
BLUE
POL
VCOM
N/P
N/P
HDOUT
VDOUT
R-OUT
G-OUT
G-OUT
B-OUT
POL
HSYNC
PCL
VSYNC
VCOM
SW1
62 SW2
PARKING
DATA
SCLK
CS
Y IN
V-SDA
V-SCK
C IN
VIN1
VO
VIN2
VIN3
SW2
SW1
CSYNCIN
HSYNCLOCK
SDA
SCL
X2
41 X1
1 TEST
27 KEY IN
45 KEYHALT
RESET
3V
WRITING
FLASH ROM
FLASH ROM
SI
SCK
SO
VPP
SYNC DET/SO
36
RESET
39
FLASH
VSYNC
OSD CS
OSD CLK/SCK
OSD DATA/SI
SCK
SDATA
N/P
EEPROM
IC403
2
1
RESET
IC402
CN1001
CVBS2
SDA
SCL
PARKING
ACC
ACC
ACC
GND
GND
CVBS1
1
3
9
5
6
7
8
R-IN2
S-DATA
S-CLK
CSYNC
G-IN2
B-IN2
YS
VR
VG
VB
VBLK
X501
3.579545MHz
X502
4.433619MHz
2
1
3
X401
4.19MHz
S408
(TEST)
S401
POWER
S402
MENU
DIMMER/+
S403
S404
INPUT/–
1
3
5
4
2
VDD3.3V
DELAY
Q514
6
2
Signal path
: VIDEO
(Page 16)
(Page 16)
(Page 16)
XVM-B62
16
16
XVM-B62
6-2. BLOCK DIAGRAM — DISPLAY SECTION —
D705
SYSTEM CONTROL
IC401 (2/2)
D704
D703
D702
D701
T701
VGON 17V
7.5V
DD 8.5V
+3.1V
(SYS)
(SYS)
VEE 5V
VDD 3.3V
VSS –12V
PW.DET.
MODE1
IMODE1
IMODE2
IMODE2
IQ2H_SEL
MODE2
7.5V
HD
VIY
RED
VR
VG
VB
GREEN
BLUE
VD
POL
VCOM
N/P
+8.5V
REG.
53
56
52
49
42
41
40
38
17
OPOLS
10
INNP
64
IOHSY
14
ICSY
4
IVIY
2
18
60
59
58
MODE3 57
TFT_ON 56
DIMMER 60
5
11
44
SHOR
31
PW-ON
2
7
SWITCHING
DRIVE
Q656,702
IC901
DC-DC
CONVERTER
IC701
IC903
F701
D902
D901
ACC
D408
OUT1
CR
3
2
NDN1
15
SCP
2
1
7
VCOM
AMP
IC652
1
6
+3.3V
REG.
3
1
47
44
45
1
4
VB
VG
VR
VOC
IC802
RV802
DISPLAY
CONTROL
IC801
CPH1
VT
OCPH1
OPDA
OOSCO
IOSCI
OSTH1
OOEH
OSTH2
OCPV
OSTV1
OSTV2
OOE1
STHL
STHH
STHR
STHR
LCD1
LIQUID
CRYSTAL
DISPLAY
PANEL
DOT CLOCK
OSC
D803
VCOM
DRIVER
Q652,654,655
BATTERY LEVEL
DETECT
Q402,403
VG
SWITCH
Q414–416
T601
LCD
BACK
LIGHT
1
2
3
CKV
STV1
STV2
OEV
62
63
ILNR
IUND
R/L
U/D
VCOM
VGH+17V
VCO
RV652
Q651,653
Q801
F601
DC/AC
INVERTER
IC601
Q601
VCOM
VGON 17V
DD 8.5V
BATT
BTR
13
OUTR
8
OUTL
10
BTL
19
ISFB
EN
1 ABRT
2
IL
7
•
14
RV701
5V
RV702
FREQ
Signal path
: VIDEO
(Page 15)
(Page 15)
(Page 15)
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