Sony KV-27V42 Service Manual ▷ View online
— 21 —
KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
Feature ID Map
5-4. A BOARD ADJUSTMENTS
H. Frequency Adjustment
1. Input a monoscope signal.
2. Set to Service Adjustment Mode.
3. Connect a frequency counter to base of Q501
(TP-500 H. DRIVE).
4. Select the item of AFC, set to 3 level (free run).
5. Check H. Frequency for the 15735 ± 200 Hz.
6. Select the AFC item again and adjust level to 0.
7. Press
then
to save into the memory.
V. Frequency Adjustment
1. Select video 1 with no signal input.
2. Set the conditions for a standard setting.
3. Connect the frequency counter across TP-508 or CN501
VDY (+) pin
connector and ground.
4. Check that V. Frequency shows 60 ± 4 Hz.
Sub Contrast Adjustment (RDRV)
1. Input a color-bar signal.
2. Set the red color.
3. Set to Service Adjustment Mode.
4. Select the item DCOL level to 0.
5. Set the conditions as follows:
PICTURE:
MAX
COLOR:
MIN
BRIGHT:
CENTER
R ON:
ON (1)
G ON:
OFF (0)
B ON:
OFF (0)
SERVICE RON 1
1: ON
0: OFF
0: OFF
6. Connect an oscilloscope probe to CN301 pin
(R OUT)
and ground.
7. Select RDRV with
and
.
8. Adjust with
and
for 1.75 ± 0.05 Vp-p
Black
White
1.75 ± 0.05 Vp-p
9. Reset the item DCOL to 1.
10. Return the following back to normal after adjustment.
11. Press
then
to save into the memory.
PICTURE:
MAX
COLOR:
CENTER
BRIGHT:
CENTER
R ON:
ON (1)
G ON:
ON (1)
B ON:
ON (1)
Display Position Adjustment (DISP)
1. Input a color-bar signal.
2. Set to Service Adjustment Mode.
3. Select DISP with
and
.
4. Adjust with
and
to adjust characters to the center.
5. Press
then
to save into the memory.
6. Check to see if the text is displayed on the screen.
SERVICE DISP 15
Sub Bright Adjustment (SBRT)
1. Input a crosshatch signal.
2. Set to Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Select the SBRT item with
and
.
5. Adjust with
and
to obtain a faintly visible crosshatch.
6. Press
then
to save into the memory.
MODEL
DEST.
ID-0 ID-1 ID-2 ID-3 ID-4 ID-5 ID-6 ID-7
KV-27V42
US
25 151 175 234 11
3
0
64
KV-27V66
US
25 151 237 234 11
3
7
64
KV-27V66
CND
89 151 237 154 11
3
7
64
KV-29SL42K
KOREA
137 145 15 203 27
3
0
64
KV-29SL42T
TAIWAN
9
145 15 203 27
3
0
64
KV-29VL42T
TAIWAN
9
151 175 202 27
3
0
64
KV-29XL42T
TAIWAN
9
145 15 203 27
3
0
64
— 22 —
KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
Sub Hue, Sub Color Adjustment (SHUE, SCOL)
1. Input a color-bar signal.
2. Set to Service Adjustment Mode.
3. Select the DCOL item and set the value to 0.
4. Connect an oscilloscope probe to CN702 Pin
(BLUE OUT) of the C Board and ground.
5. Select SHUE and SCOL with
and
.
6. Adjust with
and
for the V1 = V4 ± 0.15 Vp-p
(SCOL) and V2 = V3 ± 0.15 Vp-p (SHUE).
V1
V2
V3
V4
7. Reset the DCOL level to 1.
8. Press
then
to save into memory.
V. Size Adjustment (VSIZ)
1. Input a crosshatch signal.
2. Set to Service Adjustment Mode.
3. Select the VSIZ item with
and
.
4. Adjust value of VPOS with
and
for the best vertical
center.
5. Press
then
to save into the memory.
V. Center Adjustment (VPOS)
1. Input a crosshatch signal.
2. Set to Service Adjustment Mode.
3. Select the VPOS item with
and
.
4. Adjust value of VPOS with
and
for the best vertical
center.
5. Press
then
to save into the memory.
H. Center Adjustment (HPOS)
Perform this adjustment after checking H. Frequency.
1. Input a crosshatch signal.
2. Set to Service Adjustment Mode.
3. Select the HPOS item with
and
.
4. Adjust the value of HPOS with
and
for the best
horizontal center.
5. Press
then
to save into the memory.
H. Size Adjustment (HSIZ)
1. Input a crosshatch signal.
2. Set to Service Adjustment Mode.
3. Select HSIZ with
and
.
4. Adjust with
and
for the best horizontal size.
5. Press
then
to save into the memory.
V. Linearity (VLIN), V Correction
1. Input a crosshatch signal.
2. V. correction is automatically adjusted from the circuit
and should satisfy the conditions below.
Service Adjustment Mode Memory
1. Change the value of the DCOL item to 1.
2. After completing all adjustments, press
then
.
Read From Memory
SERVICE READ
Green
Red
ENTER
0
— 23 —
— 24 —
— 25 —
— 26 —
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM
6-2. CIRCUIT BOARD LOCATIONS
6-3. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
• All capacitors are in
µ
F unless otherwise noted.
pF:
µµ
F 50 WV 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:
Pitch: 5mm
Rating electrical power 1/4W (CHIP: 1/10W)
• All resistors are in ohms.
K
Ω
= 1000
Ω
M
Ω
= 1000K
Ω
•
: nonflammable resistor
•
: fusible resistor
•
: internal component
•
: panel designation and adjustment for repair
•
: earth-ground
•
: earth-chassis
• All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
• The components identified by
in this manual have 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.
regulations regarding X-ray radiation. Should 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
the specified value, change the component identified
by
and repeat the adjustment until the specified value
is achieved (refer to Safety Related Adjustments on
page 17).
page 17).
• When replacing parts shown in the table below, be sure to
perform the related adjustments.
• All voltages are in Volts
• Voltage is DC with respect to ground 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 production
tolerance.
• Circled numbers are waveform references.
• *
: cannot be measured
•
: B + Line
•
-----
: B
−
Line
•
: 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
The components identified by shading and
mark
are critical for safety. Replace only with the part
number specified.
The symbol
number specified.
The symbol
(displayed on component side of the
circuit board) indicates fast operating fuse. Replace
only with fuse of the same rating as marked.
only with fuse of the same rating as marked.
Les composants identifiés per un tramé et une marque
sont critiques pour la sécurité. Ne les remplacer que
par une piéce portant le numéro spécifié.
Le symbole
Le symbole
indique une fusible a action rapide.
Doit etre remplacee par une fusible de meme yaleur,
comme marque.
comme marque.
Note:
Part Replaced ( )
Adjustment ( )
HV HOLD-DOWN
B+ VOLTAGE
CONFIRMATION
CONFIRMATION
DY, C511, C573, C574, C575,
D572, D573, D574, R582, R583,
R585, R586, R578, R625, R626,
T504, IC301, IC521, IC602, C507,
C508, C505, C509, C515, C520,
L591, L501,
IC601, IC602
A board
CV board
(KV-27V42/66/29VL42T)
(C) board
(KV-29SL42K/42T/XL42T)
(KV-27V42/66/29VL42T)
(C) board
(KV-29SL42K/42T/XL42T)
E board
HV board
(KV-27V42/66/29VL42T)
(KV-27V42/66/29VL42T)
K board
(KV-27V66)
(KV-27V66)
P board
(KV-27V66)
(KV-27V66)
(R584)
KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
858 Block Diagram.p65
4/22/99, 3:14 PM
1
D306
I-11
D605
A-12
IC301
I-10
Q285
G-2
Q361
I-6
D001 H-6
D388
H-10
D606
C-13
IC302
J-7
Q286
J-3
Q390
H-10
D002 I-14
D403
H-12
D607
D-13
IC401
G-8
Q287
J-4
Q391
H-10
D003 K-14
D501
B-5
D608
A-10
IC402
G-13
Q288
J-4
Q501
D-6
D004 J-11
D502
E-4
D609
A-10
IC521
G-4
Q300
H-10
Q502
B-6
D005
K-14
D503
E-4
D610
C-11
IC541
F-4
Q302
J-9
Q521
H-4
D201
I-2
D520
C-6
D611
D-11
IC601
C-10
Q305
H-9
Q522
G-6
D202
I-2
D521
F-5
D612
D-14
IC602
F-10
Q306
I-11
Q550
H-3
D204
I-2
D522
G-6
D613
D-10
IC604
F-10
Q307
I-11
Q555
G-9
D205
K-3
D523
H-4
D614
D-10 Q308
I-11
Q571
E-3
D207
G-2
D541
F-4
D615
A-8
Q001
I-12
Q309
I-11
Q601
D-13
D208
G-8
D550
H-3
D617
B-8
Q080
I-15
Q310
I-11
Q602
E-12
D250
I-2
D551
H-3
D620
F-13
Q082
I-12
Q349
H-6
Q603
E-13
D251
I-2
D552
D-3
D630
C-8
Q083
I-12
Q350
H-8
Q604
F-13
D252
I-2
D561
D-3
D640
B-15
Q101
K-4
Q351
I-7
Q605
F-12
D253
J-2
D562
E-2
D650
D-10
Q170
K-5
Q352
I-7
Q607
F-13
D254
J-2
D571
D-4
Q200
G-1 Q353
H-8
Q610
F-13
D255
J-2
D572
G-3
IC001
J-13
Q201
G-1 Q354
I-7
Q630
B-15
D280
J-2
D573
G-3
IC002
J-14
Q203
G-8
Q355
I-6
Q650
H-8
D281
H-2
D574
G-4
IC003
K-14
Q280
H-3
Q356
H-6
D302
G-10
D581
G-3
IC004
H-15
Q281
H-3
Q357
H-6
X001
J-13
D303
J-12
D602
C-14
IC010
K-9
Q282
H-3
Q358
H-9
X301
J-9
D304
J-10
D603
D-13
IC202
G-2
Q283
H-2
Q359
H-9
D305
I-11
D604
D-13
IC203
I-4
Q284
G-2
Q360
J-8
CRYSTAL
DIODE
IC
TRANSISTOR
A BOARD LOCATION LIST
— 27 —
— 28 —
— 29 —
A BOARD: IC541 TDA8172
A BOARD: IC521 NJM4558M-TE2
A Board
— 30 —
[TUNING CONTROL, Y/C/J, POWER SUPPLY, DEFLECTION, TUNER/IF, AUDIO, MTS]
1
2
3
4
5
6
7
8
9
10
11
A
B
C
D
E
F
G
H
I
12
13
14
15
J
K
L
A BOARD: IC301 CXA2061S
KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
A BOARD (* ) MARK VARIANT LIST
#: NOT MOUNTED
REF NO.
LOC.
KV-24SL42K
KV-29SL42T/
XL42T
KV-29VL42T
KV-27V42
KV-27V66
C216
C-17
0.47
0.47
0.47
0.47
#
C217
C-17
0.47
0.47
0.47
0.47
#
C230
C-16
#
#
0.22
0.22
#
C237
C-16
#
#
0.22
0.22
#
C239
B-16
#
#
0.0047
0.0047
#
C240
B-17
#
#
0.0047
0.0047
#
C250
C-7
#
#
#
#
1
C251
C-7
#
#
#
#
1
C252
C-6
#
#
#
#
0.47
C280
B-7
#
#
470 25V
470 25V
470 25V
C281
B-8
#
#
0.47
0.47
0.47
C282
B-8
#
#
0.47
0.47
0.47
C370
F-12
#
#
#
#
0.01
C371
F-12
#
#
#
#
0.01
C372
F-13
#
#
#
#
0.01
C380
F-12
0.01
0.01
0.01
0.01
#
C381
F-12
0.01
0.01
0.01
0.01
#
C382
F-13
0.01
0.01
0.01
0.01
#
C418
F-9
10
10
10
10
#
C613
M-3
560 400V
680 250V
680 250V
680 250V
680 250V
C616
K-4
0.022 400V
#
#
#
#
C617
L-4
220P
#
#
#
#
C627
E-2
#
#
#
#
0.1
CN151
D-1
#
#
#
#
8P WHT
CN152
F-1
#
#
#
#
6P WHT
CN251
A-16
#
#
#
#
7P WHT
CN252
A-17
#
#
3P
3P
#
CN253
A-15
#
#
7P
7P
7P
CN301
H-19
5P
5P
8P
8P
8P
CN302
E-19
#
#
#
#
15P
D002
J-3
LNK0120022G
LNK0120022G
#
#
#
D208
D-16
RD10ESB2
RD10ESB2
RD10ESB2
RD10ESB2
MTZJ-T-77-2.2A
D280
B-9
#
#
MTZJ-3.3
MTZJ-3.3
MTZJ-3.3
D281
B-8
#
#
MTZJ-3.3
MTZJ-3.3
MTZJ-3.3
D403
F-8
1SS133T-77
1SS133T-77
1SS133T-77
1SS133T-77
#
D609
L-4
RU-1P
#
RU-1P
#
#
IC004
J-2
IC SBX1981-51
IC SBX1981-51
#
#
#
IC203
C-6
MM1311AD
MM1311AD
MM1311AD
MM1311AD
MM1313AD/
IC401
B-18
TDA7057AQ/N2
TDA7057AQ/N2
TDA7057AQ/N2
TDA7057AQ/N2
#
IC601
L-5
STR-F6656
STR-F6626
STR-F6626
STR-F6626
STR-F6626
J202
B-11
#
#
3P
3P
3P
J204
B-9
#
#
3P
3P
3P
PS201
C-17
1-582-984-11
1-582-984-11
1-582-984-11
1-582-984-11
#
Q080
F-7
#
#
2SD601A-Q
2SD601A-Q
2SD601A-Q
Q280
B-7
#
#
2SA1162-G
2SA1162-G
2SA1162-G
Q281
B-7
#
#
2SA1162-G
2SA1162-G
2SA1162-G
Q282
B-7
#
#
2SA1162-G
2SA1162-G
2SA1162-G
Q283
B-7
#
#
2SD601A-Q
2SD601A-Q
2SD601A-Q
Q284
B-8
#
#
2SD601A-Q
2SD601A-Q
2SD601A-Q
Q285
B-9
#
#
2SD601A-Q
2SD601A-Q
2SD601A-Q
Q349
I-12
2SC1623-L5L6
2SD601A-Q
2SC1623-L5L6
2SD601A-Q
2SC1623-L5L6
Q390
J-14
#
#
2SD601A-Q
2SD601A-Q
2SD601A-Q
Q391
K-14
#
#
2SD601A-Q
2SD601A-Q
2SD601A-Q
R020
J-5
6.8K
6.8K
#
#
#
R021
J-6
680
680
#
#
#
R022
J-6
820
820
#
#
#
R023
J-5
2.2K
2.2K
#
#
#
R065
I-2
#
#
#
#
#
R080
F-8
#
#
22K
22K
22K
R082
F-8
#
#
10K
10K
10K
R083
I-3
#
#
470
470
470
R084
G-8
#
#
10K
10K
10K
R090
J-4
10K
10K
#
#
#
R174
C-3
#
#
#
#
#
R175
C-3
#
#
#
#
#
R211
D-16
100 1/6W
100 1/6W
100 1/6W
100 1/6W
#
R212
D-18
4.7K 1/4W
4.7K 1/4W
4.7K 1/4W
4.7K 1/4W
#
R231
C-16
2.2K
2.2K
5.6K
5.6K
#
R232
C-16
10K
10K
#
#
#
R233
C-16
10K
10K
#
#
#
R234
C-16
#
#
3.9K
3.9K
#
R235
C-16
#
#
3.9K
3.9K
#
R236
C-17
2.2K
2.2K
5.6K
5.6K
#
R237
B-16
#
#
6.8K
6.8K
#
R238
B-17
#
#
6.8K
6.8K
#
R239
B-16
#
#
4.7K
4.7K
#
R240
B-17
#
#
4.7K
4.7K
#
R255
E-6
#
#
75
75
75
R278
C-7
#
#
#
#
#
R280
B-6
#
#
100
100
100
R281
B-7
#
#
100
100
100
R282
B-7
#
#
100
100
100
R283
D-7
#
#
#
#
#
R284
B-6
#
#
220
220
220
R285
B-6
#
#
4.7K
4.7K
4.7K
R286
B-6
#
#
4.7K
4.7K
4.7K
R287
B-7
#
#
4.7K
4.7K
4.7K
R288
B-7
#
#
4.7K
4.7K
4.7K
R289
B-8
#
#
68
68
68
R290
B-8
#
#
470K
470K
470K
R291
B-9
#
#
470K
470K
470K
R292
B-9
#
#
470K
470K
470K
R293
B-7
#
#
6.8K
6.8K
6.8K
R294
B-8
#
#
6.8K
6.8K
6.8K
R295
B-9
#
#
6.8K
6.8K
6.8K
R390
J-13
#
#
1K
1K
1K
R391
J-13
#
#
10K
10K
10K
R392
K-14
#
#
1K
1K
1K
R394
H-4
#
#
220
220
220
R395
J-14
#
#
1K
1K
1K
R400
F-8
22K
22K
22K
22K
#
R407
D-7
#
#
#
#
#
R432
F-9
8.2K
8.2K
8.2K
8.2K
#
R450
D-16
#
#
#
#
#
R451
E-16
#
#
#
#
#
R633
M-3
270K
390K
390K
390K
390K
R637
L-4
100K
#
100K
#
#
R638
M-3
270K
(5MM)
(5MM)
(5MM)
(5MM)
R656
L-6
56
33
33
33
33
S001
J-5
1-692-431-21
1-692-431-21
#
#
#
S002
J-5
1-692-431-21
1-692-431-21
#
#
#
S003
J-5
1-692-431-21
1-692-431-21
#
#
#
S004
J-6
1-692-431-21
1-692-431-21
#
#
#
S005
J-6
1-692-431-21
1-692-431-21
#
#
#
S006
J-5
1-692-431-21
1-692-431-21
#
#
#
S007
J-4
1-692-431-21
1-692-431-21
#
#
#
T603
K-6
EER-42
EER-35L
EER-35L
EER-35L
EER-35L
THP601
M-9
#
#
#
#
#
THP602
M-9
#
POSITIVE
POSITIVE
POSITIVE
POSITIVE
TU101
B-4
BTF-WL411
BTF-WG411
BTF-WG411
BTF-WA411
BTF-WA411
REF NO.
LOC.
KV-24SL42K
KV-29SL42T/
XL42T
KV-29VL42T
KV-27V42
KV-27V66
U
O
C 6
3
1
2
3
4
29
7
8
9
10
11
12
13
14
15
16
17
18
24
19
20
21
22
23
25
26
27
28
5
6
30
31
6dB
6dB
6dB
-6dB
32
BIAS
I C LOGIC
2
–6dB
-6dB
Vcc
MTV-V
V1-V
V2-V
V3-V
V1-Y
V2-Y
V1-C
V2-C
MTV-L
V1-L
V2-L
V3-L
MTV-R
V1-R
V2-R
V3-R
BIAS
SCL
SDA
GND
V OUT
Y IN
Y OUT
C IN
C OUT
L OUT
R OUT
S1
S2
ADDRESS
MUTE
A BOARD: IC203 MM1311AD
(EXCEPT KV-27V66)
858 A PWB.p65
4/22/99, 3:11 PM
1
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