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Model
XVM-R70
Pages
64
Size
3.73 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
xvm-r70.pdf
Date

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
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
Adjusting location: LCD board
5-12. VIDEO ADJUSTMENT
Conditions: TEST MODE (See 13 page)
10-step gray scale signal input
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
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  
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
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
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
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
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
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
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-
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
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
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
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
Page of 64
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