Sony XVM-R70 Service Manual ▷ View online
16
XVM-R70
5-11. V COM VOLTAGE/POSITION ADJUSTMENT
Condition: TEST MODE (See 13 page)
1. Voltage Setup Adjustment
Adjustment method:
1) Select V Com from the FOR FACTORY MODE.
2) Connect oscilloscope between TP809 (+) and TP600 (–).
3) Adjust so that the p-p value A of the waveform stands at the
1) Select V Com from the FOR FACTORY MODE.
2) Connect oscilloscope between TP809 (+) and TP600 (–).
3) Adjust so that the p-p value A of the waveform stands at the
specified value using the
R
and
r
keys on the remote controller.
4) Adjust so that the level B on the negative side stands at the speci-
fied value using RV801.
5) Verify that the level C on the positive side stands at the specified
value.
Specified value A: 5.6 ± 0.1 Vp-p
Specified value B: –1.1 ± 0.1 V
Specified value C: 4.5 ± 0.1 V
Specified value B: –1.1 ± 0.1 V
Specified value C: 4.5 ± 0.1 V
Adjusting location: LCD board
5-12. VIDEO ADJUSTMENT
Conditions: TEST MODE (See 13 page)
10-step gray scale signal input
NTSC mode
NTSC mode
5-12-1. Brightness Signal Contrast Level (Y GAIN)
Adjustment Method:
1) Select Y Gain from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level A stands at the specified value
1) Select Y Gain from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level A stands at the specified value
using the
R
and
r
keys on the remote controller.
Specified value: 3.4 ± 0.1 V
Adjustment location: LCD board
5-12-2. Black Limiter Level Adjustment
Adjustment Method:
1) Select Black Limit from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level B stands at the specified value
using the
1) Select Black Limit from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level B stands at the specified value
using the
R
and
r
keys on the remote controller.
Specified value: 0.65 ± 0.01 V
Adjustment location: LCD board
5-12-3. White Limiter Level Adjustment
Adjustment Method:
1) Select White Limit from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level C stands at the specified value
1) Select White Limit from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level C stands at the specified value
using the
R
and
r
keys on the remote controller.
Specified value: 3.85 ± 0.05 V
Adjustment location: LCD board
5-12-4. R Sub Brightness Adjustment
Adjustment Method:
1) Select R SUS BRT from the FOR FACTORY MODE.
2) Connect oscilloscope between TP812 (+) and TP500 (–).
3) Adjust so that the signal level D stands at the specified value
1) Select R SUS BRT from the FOR FACTORY MODE.
2) Connect oscilloscope between TP812 (+) and TP500 (–).
3) Adjust so that the signal level D stands at the specified value
using the
R
and
r
keys on the remote controller.
Specified value: 1.1 ± 0.1 V
Adjustment location: LCD board
5-12-5. B Sub Brightness Adjustment
Adjustment Method:
1) Select B SUS BRT from the FOR FACTORY MODE.
2) Connect oscilloscope between TP810 (+) and TP500 (–).
3) Adjust so that the signal level E stands at the specified value
1) Select B SUS BRT from the FOR FACTORY MODE.
2) Connect oscilloscope between TP810 (+) and TP500 (–).
3) Adjust so that the signal level E stands at the specified value
using the
R
and
r
keys on the remote controller.
Specified value: 1.1 ± 0.1 V
Adjustment location: LCD board
A
0V
B
0V
C
0V
D
0V
E
0V
C
B
0V
A
17
XVM-R70
5-12-6. R Sub Contrast Adjustment
Adjustment Method:
1) Select R SUB CONT from the FOR FACTORY MODE.
2) Connect oscilloscope between TP812 (+) and TP500 (–).
3) Adjust so that the signal level F stands at the specified value
1) Select R SUB CONT from the FOR FACTORY MODE.
2) Connect oscilloscope between TP812 (+) and TP500 (–).
3) Adjust so that the signal level F stands at the specified value
using the
R
and
r
keys on the remote controller.
Specified value: 3.4 ± 0.1 V
Adjustment location: LCD board
5-12-7. B Sub Contrast Adjustment
Adjustment Method:
1) Select B SUB CONT from the FOR FACTORY MODE.
2) Connect oscilloscope between TP810 (+) and TP500 (–).
3) Adjust so that the signal level G stands at the specified value
1) Select B SUB CONT from the FOR FACTORY MODE.
2) Connect oscilloscope between TP810 (+) and TP500 (–).
3) Adjust so that the signal level G stands at the specified value
using the
R
and
r
keys on the remote controller.
Specified value: 3.4 ± 0.1 V
Adjustment location: LCD board
5-12-8.
γ
1 Adjustment
Adjustment Method:
1) Select Gamma1 from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level H stands at the specified value
1) Select Gamma1 from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level H stands at the specified value
using the
R
and
r
keys on the remote controller.
Specified value: 1.9 ± 0.1 V
Adjustment location: LCD board
5-12-9.
γ
2 Adjustment
Adjustment Method:
1) Select Gamma2 from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level I stands at the specified value us-
1) Select Gamma2 from the FOR FACTORY MODE.
2) Connect oscilloscope between TP811 (+) and TP500 (–).
3) Adjust so that the signal level I stands at the specified value us-
ing the
R
and
r
keys on the remote controller.
Specified value: 3.1 ± 0.1 V
Adjustment location: LCD board
5-12-10. VCO Free Run Adjustment
Adjustment Method:
1) Select VCO Free from the FOR FACTOR MODE.
2) Connect frequency counter between TP407 (+) and TP404 (–).
3) Adjust so that the reading on the counter stands at the specified
1) Select VCO Free from the FOR FACTOR MODE.
2) Connect frequency counter between TP407 (+) and TP404 (–).
3) Adjust so that the reading on the counter stands at the specified
value using the
R
and
r
keys on the remote controller.
Specified value: 15,734 ± 50 Hz
Adjustment location: LCD board
5-12-11. V POS Adjustment
Adjustment Method:
1) Input mono scope signal from the NTS pattern generator.
2) Select PLL/V POS from the FOR FACTORY MODE.
3) Observe the mono scope screen on the monitor and adjust so that
1) Input mono scope signal from the NTS pattern generator.
2) Select PLL/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
R
and
r
keys on
the remote controller.
5-12-12. H POS Adjustment
Adjustment Method:
1) Input mono scope signal from the NTS pattern generator.
2) Select H POS from the FOR FACTORY MODE.
3) Observe the mono scope screen on the monitor and adjust so that
1) Input mono scope signal from the NTS 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
R
and
r
keys
on the remote controller.
F
0V
G
0V
H
0V
I
0V
18
XVM-R70
IC400
RV601
RV351
TP803
TP853
TP801
TP507
TP405
TP354
TP600
TP353
RV600
TP854
TP805 TP806
RV802
CN902
CN404
RV800
TP807
T800
T850
IC601
CN800
– LCD BOARD – (SIDE A)
6-pin
IC350
TP804
TP352
TP350
TP809
TP612
TP500
TP508
TP810
TP812
TP811
TP404
TP407
RV350
RV801
CN850
CN403
CN401
1
8
4
Adjustment Location:
19
XVM-R70
1
P50
I
Test mode setting input
2
PW-ON
O
Power ON control signal output
3
P52
—
Not used (Open)
4
P53
—
Not used (Open)
5
P54
—
Not used (Open)
6
S-SCL
O
Sound I2C clock signal output
7
S-DATA
I/O
Sound I2C serial data input/output
8
O/H SELECT
I
Over-head/Head-rest select signal input
9
VSS
—
Ground
10
VDD1
—
Power supply pin (+3 V)
11
N/P SEL
I
Not used (Open)
12
P31
—
Not used (Open)
13
SDA
I/O
EEPROM data input/output
14
SCL
O
EEPROM clock output
15
P34
—
Not used (Open)
16
SCK
O
Video I2C clock signal output
17
SDATA
I/O
Video I2C serial data input/output
18
P20
I
Sync. detection signal input
19
OSD DATA
O
OSD data output
20
OSD CLK
O
OSD clock output
21
PS-ON
O
Not used (Open)
22
OSD CS
O
OSD chip select output
23
N/P
O
NTSC/PAL select signal output
24
VDD2
—
Power supply pin (+3 V)
25
AVSS
—
Ground
26
P17
—
Not used (Open)
27
KEY IN
I
A/D key signal input
28
P15
—
Not used (Open)
29
P14
—
Not used (Open)
30
P13
—
Not used (Open)
31
P12
—
Not used (Open)
32
PW DET
I
Power voltage detection signal input
33
P10
—
Not used (Open)
34
AVREF
—
Power supply pin (+3 V)
35
AVDD
—
Power supply pin (+3 V)
36
RESET
I
System reset input
37
XT2
—
Power supply pin (+3 V)
38
XT1
—
Ground
39
IC
I
Ground
40
X2
O
Crystal oscillator
41
X1
I
Crystal oscillator
42
VSS1
—
Ground
43
VSYNC
I
Vertical sync signal input
44
KEY HALT
I
Key halt detection signal input
45
REM HALT
I
Remocon halt detection signal input
46
ACC ON
I
ACC ON detection signal input
47
REM IN
I
Remocon signal input
48
ACC Y/N
I
ACC type YES/NO select signal input
49
IR CONT
O
IR control signal output
50
P-ON SW
I
Power ON SW detection signal input
51
P74
—
Not used (Open)
SECTION 6
DIAGRAMS
6-1. IC PIN DESCRIPTION
• IC400 µPD780022AY-N14-9ET (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
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