Sony KV-21XE40B Service Manual ▷ View online
— 26 —
KV-21XE40B
H. CENTER ADJUSTMENT (HPOS)
Note : Perform this adjustment after checking H. FREQUENCY.
1. Input a cross-hatch signal.
2. Set the Service adjustment Mode.
2. Set the Service adjustment Mode.
3. Select HPOS with and
.
4. Adjust with
and for the best horizontal center.
5. Write into the memory by pressing
then
/
/
V. SIZE (VSIZ)
/
?
H. CENTER (VPOS)
/
?
V. CENTER (VPOS)
V. LINEARITY (VLIN) AND V CORRECTION
1. Input a cross-hatch signal.
2. V. Correction is automatically adjusted from the circuit and
2. V. Correction is automatically adjusted from the circuit and
should satisfy the conditions below:
…
SERVICE ADJUSTMENT MODE MEMORY
1. Change DCOL to "1".
2. After completing all adjustments, press "0" then
.
3. Select the item DCOL and set to "0" level.
4. Connect an oscilloscope to
CN1752 Pin
6
(BLUE OUT) of
C Board and ground.
5. Select SHUE and SCOL with and
.
6. Adjust with and
for the V1 = V4
±
0.1Vp-p (SCOL)
and V2 = V3
±
0.1Vp-p (SHUE).
V1
V2
V3
V4
7. Reset the item DCOL to "1" level.
8. Write into the memory by pressing
then
.
V. SIZE ADJUSTMENT ( VSIZ)
1. Input a cross-hatch signal.
2. Set to Service adjustment mode.
2. Set to Service adjustment mode.
3. Select VSIZ with
and
.
4. Adjust with and
for the best vertical size.
V. CENTER ADJUSTMENT (VPOS)
1.Input a cross-hatch signal.
2.Set to Service adjustment Mode.
2.Set to Service adjustment Mode.
3.Select VPOS with
and
.
4.Adjust with
and
for the best vertical center.
5.Write into the memory by pressing
then
READ FROM MEMORY
Green
0
SERVICE
READ
Red
— 30 —
6-2.
Circuit Boards Location
IC301, IC521, IC602, D572,
D573, D574, DY, C511,C574
C575, R578, R582, R583, R584,
R585, R586, R625, R626, R634,
R635,T504 (FBT)
D573, D574, DY, C511,C574
C575, R578, R582, R583, R584,
R585, R586, R625, R626, R634,
R635,T504 (FBT)
IC001, IC602, R030,
R626, R632, R633, R635,
R636, R637, R638, R639
R626, R632, R633, R635,
R636, R637, R638, R639
Part replaced (
]
)
• All v olta ges are in V.
• Volta ge is DC with respect to gr ound unless otherwise
noted.
• Readings are taken with a 10M
• Volta ge is DC with respect to gr ound unless otherwise
noted.
• Readings are taken with a 10M
Ω
digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal produc-
tion tolerance.
• Circled numbers are waveform references.
• Voltage variations may be noted due to normal produc-
tion tolerance.
• Circled numbers are waveform references.
•
: B + Line
•
: B - Line
•
m
: signal path
Reference Information
RESISTOR
: RN
METAL FILM
: RC
SOLID
: FPRD
NON FLAMMABLE CARBON
: FUSE
NON FLAMMABLE FUSIBLE
: RW
NON FLAMMABLE WIREWOUND
: RS
NON FLAMMABLE METAL OXIDE
: RB
NON FLAMMABLE CEMENT
:
ADJUSTMENT RESISTOR
COIL
: LF-8L
MICRO INDUCTOR
CAPACITOR : TA
TANTALUM
: PS
STYROL
: PP
POLYPROPYLENE
: PT
MYLAR
: MPS
METALIZED POLYESTER
: MPP
METALIZED POLYPROPYLENE
: ALB
BIPOLAR
: ALT
HIGH TEMPERATURE
: ALR
HIGH RIPPLE
- - - - -
Pitch: 5mm
Rating electrical power 1/4W
Rating electrical power 1/4W
• All resistor s are in ohms.
K
Ω
=1000
Ω
, M
Ω
=1000K
Ω
•
f
nonflammable resistor.
•
∆
:
internal component.
•
p
: panel designation and adjustment for repair.
• All variable and adjustable resistors have charac-
teristic curve B, unless otherwise noted.
teristic curve B, unless otherwise noted.
• The components identified b
y
]
in this man ual ha ve
been carefully factory-selected for each set
in order to
satisfy regulations regarding X-ray radiation. Should
replacement be required, replace only with the value
originally used.
replacement be required, replace only with the value
originally used.
• When replacing components identified by
]
make the
necessary adjustments indicated. If results do not
meet the specified value, change the component
identified by
meet the specified value, change the component
identified by
[
and repeat the adjustment until the
specified value is achieved.
(Refer to R582 on pages 21 and 22).
(Refer to R582 on pages 21 and 22).
• When replacing parts in the table below be sure to
perform the related adjustment.
perform the related adjustment.
6-3.
Printed Wiring Boards and Schematic
Diagrams
Diagrams
Note:
•
•
All capacitors are in
µ
F unless otherwise noted.
pF:
µµ
F 50WV or less are not indicated except
for electrolytic and tantalums.
• All electrolytics are 50V unless otherwise specified
• Indication of resistance, which does not have one for
rating electrical power, is as follows:
• All electrolytics are 50V unless otherwise specified
• Indication of resistance, which does not have one for
rating electrical power, is as follows:
Adjustment (
[
)
HV HOLD-DOWN
(R582)
(R582)
B+ VOLTAGE
CONFIRMATION
CONFIRMATION
Note: The symbol
G
display is on the component side.
The components identified by shading and mark
¡
¡
¡
¡
¡
are
critical for safety. Replace only with part number
specified.
specified.
The symbol
G
indicates fast operating fuse.
Replace only with fuse of same rating as marked.
2
3
4
5
7
8
9
10
11
12
14
15
13
1
3
4
5
6
8
9
2
10
11
1
2
4
3
S005
S004
S003
S002
S006
S001
S007
T603
T604
R660
SRT
STB
VIDEO
BUFFER
Q205
L-OUT
R-OUT
J201
J202
38
36
5
6
B-DAT
B-CLK
10
S
C
L
S
D
A
37
39
2
3
1
2
1
2
1
RELAY
DRIVE
Q601
+12V
CN601
CN602
6
5
7
3
6
+13V
1
52
51
50
49
2
30
CF001
8MHZ
24
25
1
2
1
2
CN401
CN402
SP902
1
6
2
5
4
3
HV
FV
G2
11
6
5
115V
G2
FV
HV
1
R
G
B
B
G
R
CN301
R OUT
G OUT
B OUT
IK
2
1
STBY
+5V
POWER
TV/VIDEO
CHANNEL+
CHANNEL-
VOLUME+
VOLUME-
+180V
RECT
+180V
115V
-13V
RECT
-13V
RECT
+13V
H-PROT
H-PROTECT
H DRIVE
H OUT
H OUT
V MID
V OUT
CN501
V DY(+)
V DY(-)
H DY(-)
H DY(+)
DY ASSY
OCP
SWITCH
9V-REG
SET +9V
+30V
+5V
+9V
RF-AGC
BUFFER
11
2
4
5
STANDBY
+5V
H-COMP
+13V
Y . C H R O M A . J U N G L E
TUNING CONTROL,
Y/C/J
POWER SUPPLY,DEFLECTION,
2
1
8
7
9
4
C O N T R O L
T U N I N G S Y S T E M
I C 0 0 1
SWITCH
D507
6
21
HOLD DOWN
REF.
C L O S E D C A P T I O N
TP47B
BLUE OUT
DET OUT
( S T E R E O )
I C 0 0 3
M E M O R Y
N V M 1 K B I T
B C L K
B D A T
B I N T
A C
I N
D G C
D G C
CN203
B L O C K
A N T E N N A
V I D E O O U T
R F A G C
L O U T
R O U T
F M O N O
M O D E
S T L E D
D A T
C L O C K
M U T E
V C C 5 V
V C C 9 V
V C C 3 0 V
P O W E R
C O N T R O L
F B T
T 5 0 4
F O C U S ( 2 O V O N L Y )
G 2 ( 2 0 V O N L Y )
F 6 0 1
A C R E C T
R Y 6 0 1
P I C T U R E T U B E
I - K E Y
I - P O W E R N
I - R M C N
O-DGC
O
-
R
E
L
A
Y
I - R E S E T
I - P R O T
I - V P N
O - O S D B L K
O - B
O - G
O - R
I - H P
O - S C L K N
I O - S D A T
O - M U T E
I - H S Y N C
I - C V I N
O-VO
O-V1
O-MONO
O-SAP
I-STLED
I-AFT
O - B C L K N
I O - B D A T
I - B I N T N
30V.REG
R E A R A / V
( I N P U T )
V I D E O
A U D I O
F R O N T A / V
( I N P U T )
V I D E O
A U D I O
L
R
L
R
S P E A K E R
H E A D P H O N E
J400
A B L
H
G2
FV
HV
H E A T E R
1
3
5
7
2
4
BUFFER
S1
S2
1
3
5
7
2
4
BUFFER
S1
S2
A U D I O - L S W I T C H
A U D I O - R S W I T C H
MUTE
H DRIVE
H DRIVE
H DRIVE
V DRIVE
A
B
L
ABL
ABL
T U 1 0 1
V1-L
V2-L
TV-R
V1-R
V2-R
TV-L
43
TV/C2
2
C1
MONOUT
Q305,391
Q001
BUFFER
Q390
41
CVBS2/Y2
CVBS1/Y1
3
1
5
7
13
11
10
8
(+)OUT1
(-)OUT1
(+)OUT2
(-)OUT2
+
Vref
I C 4 0 1
I C 5 2 1
V . O U T
I C 5 4 1
I C 2 0 1
I C 2 0 0
I C 0 0 4
D E T E C T O R
1
7
14
V
D
-
13
V
D
+
D R I V E R -
D R I V E R +
B U F F E R
B U F F E R
B U F F E R
12V
I C 6 0 2
S T B Y + 5 V
R E G .
I C 0 0 2
19
I - A V C C
6
Q605
9V REF
D611
Q602
Q501
T501
Q502
MUTE
Q202
1
2
3
5
9
8
7
24
23
22
6
5
4
9V
+B
C R T A M P
I C 7 0 1
B OUT
G OUT
R OUT
IK
IK
D552
D561
D562
TP502
TP501
TP504
D574
TP503
Q571
6
CN502
T 6 0 1
D581
T P 5 0 8
T P 5 0 7
T P 5 0 6
18
Q 3 0 0
33
14
12
18
O
-
L
E
D
S T A N D - B Y / T I M E R
D 0 0 2
I C 3 0 1
7
9
46
4
CHROMA SW
Y SW
MONITOR SW
VIDEO SW
34
35
ATTN
V.SYNC.SEP
H.SYNC.SEP
STRAP
DELAY
SHARPNESS
DL
COUNT DOWN
VSAW GEN.
AFC
HSAW GEN.
H.TIM
GEN.
PHASE DET.
HD GEN.
VD SAW FUNC.
EW PARABOLA FUNC.
11
E
W
R
.
G
.
B
B
L
K
C
U
T
O
F
F
C
O
N
T
.
D
R
I
V
E
A
M
P
B
R
I
G
H
T
C
O
N
T
.
C
L
A
M
P
G
A
M
M
A
A
M
P
P
I
C
T
U
R
E
A
M
P
D
Y
N
A
M
I
C
C
O
L
O
R
Y
S
2
S
W
Y
M
S
W
Y
S
1
S
W
32 31 30
R
2
I
N
G
2
I
N
B
2
I
N
CLAMP
RGB1/2
AKB
HP/PROTECT
29
Y
S
2
/
Y
M
19
20
5
V
T
I
M
47
48
X302
X301
3
A
B
L
I
N
31
13
17
5
16
22
44
42
43
34
R . G . B D R I V E
C R T D R I V E
{
}
E
TP102
TP100
A F T O U T
D205
D201
D202
D209
D203
D204
ESD
ESD
ESD
ESD
ESD
3
O - V O L
Q203,204
V. BOOST
D502
+ B
D 5 0 2
F S C S W
C VCO
XTAL2
FSC OUT
I2C BUS
IK IN
FILTER ALIGNMENT
WIDE SAW
FUNC.
ACC AMP(SECAM ACC DET.)
Y/C MIX
RGB CLAMP
COLOR AMP
EYUV CLAMP
ACC DET
BPF
CHROMA AMP
BELL
FILTER
LIM
AMP
PLL
FM DEMOD
APC
V . C O N T R O L H O L D
ABL/PEAK
ABL
SECAM
VCO
42
A
B
L
F
I
L
SW
NTSC/PAL
SECAM
PAL/NTSC
DEMOD
FSCOUT
DELAY
LINE
DAC
SW
VIDEO SEL
S SEL
H.SYNC.SEP.
COLOR SYSTEM
DISCRIMINATOR
LINE BLK
DE-
EMPHASIS
LINE COUNTER
V.TIM GEN.
(50/60)
V.TIM
17
S
C
P
SW
HP
Q002
TUNER/IF,AUDIO,MTS
AUDIO-R(+)
AUDIO-L(+)
REFERENCE
VIP
B IN
G IN
R IN
B-SV6924<BA4-M#6>-BD.
D 6 0 5
2
1
3
4
VIN
OCP/FB
C O N V . O U T
I C 6 0 1
SW
Q607
SW
Q608
+B RECT.
AUDIO VCC
RECT.
12V RECT.
7.5V RECT.
D636
7.5V
Q604
STBY
S
D
7.5V
R Y 6 0 2
SW
Q670
C N 1 7 5 2
CN1755
SP901
S P E A K E R
(R)
(L)
A U D I O A M P
PH600
SET UP
ESD
D210
6
5
4
3
3
1
1
2 1 N X
Q 1 7 5 1
S W
FOR JIG
X300
S T A N D - B Y / T I M E R
D 0 0 2
IN
OUT
RESET
SW CONTROL
PWM-DC/VOLUME
4
O - A D J
I - D S C
O - D S C
R E F
B O O S T
O U T
5
D573
+ B
T O D G C
H
D
A
F
C
F
I
L
H
P
/
P
R
O
T
E
C
T
D615
+B
D616
AUDIO VCC
D617
I K - B U F F E R
Q 3 0 1 , 3 0 2
Q 3 9 2
Q 3 9 3
Q 3 9 4
COMB C
COMB Y
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