Sony KV-27FV300 Service Manual ▷ View online
— 26 —
KV-27FV300/29FV300/32FV300/36FV300
4-5. ID MAP TABLE
4-6. A BOARD ADJUSTMENTS
H. FREQUENCY (FREE RUN) CHECK
1. Input a TV mode (RF) with no signal.
2. Connect a frequency counter to base of Q501
(TP-25 H. DRIVE) on the A Board.
3. Check H. Frequency for 15734 ± 400/-200 Hz.
V. FREQUENCY (FREE RUN) CHECK
1. Select video 1 with no signal input.
2. Set the conditions for a standard setting.
3. Connect the frequency counter to TP-27 (V OUT) or CN501 pin 6
(V DY+) and ground on the A Board .
4. Check that V. Frequency shows 60 ± 5 Hz.
SUBCONTRAST ADJUSTMENT (RDRV)
1. Input a color-bar signal and set the level to 75%.
2. Set in Standard mode.
3. Activate the Service Adjustment Mode. Set color min pic max.
4. Set GON and BON items. Using 3 and 6 set each to the following
4. Set GON and BON items. Using 3 and 6 set each to the following
values. Leave RON set to “1”.
service video rdrv
ntsc
vchp
Category
Display
Item
Mode
Item
Data
Data
Signal
Type
Type
00000000 00000000
26
R ON: ON
(1)
G ON: OFF
(0)
B ON: OFF
(0)
5. Connect an oscilloscope probe to C Board, CN705 pin 3 (Red Out)
(TP35).
6. Select SCON with 1 and 4 .
7. Adjust the value of SCON with 3 and 6 for
1.90 ± 0.05Vpp for 27/29/32/34”, or 1.95 ± 0.05Vpp for 36/38”.
8. Reset AALS, ABLS, GON and BON values to “1”.
R ON: ON
(1)
G ON: ON
(1)
B ON: ON
(1)
9. Press MUTING then ENTER to save into the memory.
DISPLAY POSITION ADJUSTMENT (DISP)
1. Input a color-bar signal.
2. Set to Service Adjustment Mode.
3. Select DISP with 1 and 4 .
4. Adjust values of DISP with 3 and 6 to adjust characters to the
center.
5. Write to memory by pressing MUTING then ENTER .
6. Check to see if the text is displayed on the screen.
service micro disp 48
ntsc
vchp
Category
Display
Item
Mode
Item
Data
Data
Signal
Type
Type
00000000 00000000
SUB BRIGHT ADJUSTMENT (SBRT)
1. Input a monoscope signal.
2. Activate the Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Select the SBRT item with 1 and 4 .
5. Adjust the values of SBRT with 3 and 6 to obtain a faintly visible
crosshatch.
6. Press MUTING then ENTER to save into the memory.
SUB HUE, SUB COLOR ADJUSTMENT
(SHUE, SCOL)
(SHUE, SCOL)
1. Input color-bar signal at 75%.
2. Activate the Service Adjustment Mode.
3. Set (PIC) to Max and (COL) to 50%.
4. Connect an oscilloscope probe to C Board, CN705Pin 4 Blue Out.
5. Select the SHUE and SCOL item with 1 and 4 .
Model
Destination ID-O ID-1 ID-2 ID-3 ID-4 ID-5 ID-6 ID-7
KV-27FV300
US
89
63
237
98
78
128
6
16
KV-27FV300
CND
89
63
237
82
78
128
6
16
KV-29FV300
E
81
63
237
194
110
128
6
80
KV-32FV300
US
89
63
237
98
78
128
6
24
KV-32FV300
CND
89
63
237
82
78
128
6
24
KV-36FV300
US/HAW
89
63
237
98
78
128
6
24
KV-36FV300
CND
89
63
237
82
78
128
6
24
— 27 —
KV-27FV300/29FV300/32FV300/36FV300
6. While showing the SHUE item, adjust the waveform with 1
and 4 until the second and third bars show the same level
(V2 = V3 < 0.15Vp-p).
(V2 = V3 < 0.15Vp-p).
7. While showing the SCOL item, adjust the waveform with 3
and 6 until the fi rst and fourth bars show the same level
(V1 = V4 < 0.15Vp-p).
(V1 = V4 < 0.15Vp-p).
V1 V2 V3 V4
8. Press MUTING then ENTER to save into the memory.
V. SIZE ADJUSTMENT (VSIZ)
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the VSIZ item with 1 and 4 .
4. Adjust value of VPOS with 1 and 4 for the best vertical center.
5. Press MUTING then ENTER to save into the memory.
V. CENTER ADJUSTMENT (VPOS)
Perform this adjustment after performing H. Frequency
(Free Run) Check.
1. Input a crosshatch signal.
(Free Run) Check.
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the VPOS item with 1 and 4 .
4. Adjust value of VPOS with 3 and 6 for the best vertical center.
5. Press MUTING then ENTER to save into the memory.
H. CENTER ADJUSTMENT (HPOS)
Perform this adjustment after performing H. Frequency
(Free Run) Check.
1. Input a crosshatch signal.
(Free Run) Check.
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the HPOS item with 1 and 4 .
4. Adjust the value of HPOS with 3 and 6 for the best horizontal center.
5. Press MUTING then ENTER to save into the memory.
H. SIZE ADJUSTMENT (HSIZ)
1. Input a monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select HSIZ with 1 and 4 .
4. Adjust with 3 and 6 for the best horizontal size.
5. Press MUTING then ENTER to save into the memory.
V. LINEARITY (VLIN), V. CORRECTION
(SCOR), PIN AMP (PAMP), AND HORIZONTAL
TRAPEZOID (HTRP) ADJUSTMENTS
(SCOR), PIN AMP (PAMP), AND HORIZONTAL
TRAPEZOID (HTRP) ADJUSTMENTS
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select VLIN, SCOR, PAMP, and HTRP with with 1 and 4 .
4. Adjust with 3 and 6 for the best horizontal size.
5. Press MUTING then ENTER to save into the memory.
V LINEARITY (VLIN)
V CORRECTION (SCOR)
PIN AMP (PAMP)
HORIZONTAL TRAPEZOID (HTRP)
— 28 —
KV-27FV300/29FV300/32FV300/36FV300
V. ANGLE (VANG), V. BOW (VBOW), UPPER
PIN (UPIN) AND LOW PIN (LPIN)
ADJUSTMENTS
PIN (UPIN) AND LOW PIN (LPIN)
ADJUSTMENTS
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select VANG, VBOW, UPIN, and LPIN with 1 and 4 .
4. Adjust with 3 and 6 for the best picture.
5. Press MUTING then ENTER to save into the memory.
V ANGLE (VANG)
V BOW (VBOW)
UPPER PIN (UPIN)
LOW PIN (LPIN)
SERVICE ADJUSTMENT MODE MEMORY
1. After completing all adjustments, press 0 then ENTER .
Read From Memory
Green
Red
ENTER
0
service defl vbow
ntsc
vchp
Category
Display
Item
Mode
Item
Data
Data
Signal
Type
Type
00000000 00000000
7
— 29 —
KV-27FV300/29FV300/32FV300/36FV300
5-2. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS INFORMATION
All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less
are not indicated except for electrolytics and tantalums.
are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise specifi ed.
All resistors are in ohms. k
Ω=1000Ω, MΩ=1000kΩ
Indication of resistance, which does not have one for rating
electrical power, is as follows: Pitch : 5mm
electrical power, is as follows: Pitch : 5mm
Rating
electrical
power
:
1
/
4
W
1
/
4
W in resistance,
1
/
10
W and
1
/
8
W in chip resistance.
: nonfl ammable 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.
otherwise noted.
Readings are taken with a color-bar signal input.
Readings are taken with a 10M
Ω digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production tolerances.
All voltages are in V.
S : Measurement impossibility.
: B+line
: B-line (Actual measured value may be different).
: signal path (RF)
Circled numbers are waveform references.
5-1. CIRCUIT BOARDS LOCATION
REFERENCE INFORMATION
RESISTOR
: RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
:
: RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
:
ADJUSTMENT RESISTOR
COIL
: LF-8L MICRO INDUCTOR
: LF-8L MICRO INDUCTOR
The components identifi ed by shading and
!
symbol are critical for safety. Replace
only with part number specifi ed.
The symbol
indicates a fast operating fuse and is displayed on the component
side of the board. Replace only with fuse of the same rating as marked.
Les composants identifi es per un trame et une marque
!
sont critiques pour la
securite. Ne les remplacer que par une piece portant le numero specifi e.
Le symbole
indique une fusible a action rapide. Doit etre remplace par une
fusible de meme yaleur, comme maque.
The components identifi ed by X in this basic schematic diagram have
been carefully factory-selected for each set in order to satisfy regulations
regarding X-ray radiation. Should replacement be necessary, replace
only with the value originally used.
been carefully factory-selected for each set in order to satisfy regulations
regarding X-ray radiation. Should replacement be necessary, replace
only with the value originally used.
When replacing components identifi ed by Y, make the necessary
adjustments as indicated. If the results do not meet the specifi ed value,
change the component identifi ed by X and repeat the adjustment until
the specifi ed value is achieved.
adjustments as indicated. If the results do not meet the specifi ed value,
change the component identifi ed by X and repeat the adjustment until
the specifi ed value is achieved.
(Refer to R530 and R531 adjustment on page 16.)
When replacing the parts listed in the table below, it is important to
perform the related adjustments.
perform the related adjustments.
A BOARD:
HV HOLD DOWN
R550, T503, T504, D519,
IC501, R533, D521, R532,
D520, C531, R529, R530,
R531, C532
IC501, R533, D521, R532,
D520, C531, R529, R530,
R531, C532
R530, R531
Part Replaced (
)
Adjustment (
)
CAPACITOR
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
SECTION 5: DIAGRAMS
A Board
GK Board
C Board
V Board
HR Board
T Board
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