Sony KV-21FA310 (serv.man2) Service Manual ▷ View online
34
KV-21FA310/21FV210/29FA310/29FS110/29FV210
KV-21FA310/21FV210/29FA310/29FS110/29FV210
11. Press 3 or 6 to adjust the value of SCON to 85 ± 2Vpp.
85 + 2Vpp
12. Repeat steps 5 thru 8 to reset GON and BON values to “1”.
R
ON:
ON
(1)
G
ON:
ON
(1)
B
ON:
ON
(1)
13. Press MUTING then ENTER to write into memory.
Display Position Adjustment (DISP)
1. Input a color-bar signal.
2. Access Service Adjustment Mode.
3. Press 2 or 5 to select the Microprocessor device.
4. Press 1 or 4 to display the DISP OSD item.
5. Press 3 or 6 to adjust characters to the center.
6. Press MUTING then ENTER to write into memory.
7. Check to see if the text is displayed on the screen.
7. Check to see if the text is displayed on the screen.
Sub Bright Adjustment (SBRT)
1. Input a monoscope signal.
2. Access Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Press 2 or 5 to select the VP1 device.
5. Press 1 or 4 to display the SBRT OSD item.
6. Press 3 or 6 to obtain a faintly visible 20 IRE mark, after that
increase +3 steps.
7. Press MUTING then ENTER to write into memory.
4-6. WHITE BALANCE ADJUSTMENTS
1. Input an entire white signal with burst.
2. Access Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Adjust with SBRT if necessary.
5. Press 2 or 5 to select the VP1 device.
6. Press 1 or 4 to display the GCUT OSD item.
7. Press 3 or 6 to adjust for the best white balance.
8. Press 1 or 4 to display the BCUT OSD item.
9. Press 3 or 6 to adjust for the best white balance.
10. Set the PICTURE and BRIGHTNESS to maximum.
11. Press 1 or 4 to display the GDRV OSD item.
12. Press 3 or 6 to adjust for the best white balance.
13. Press 1 or 4 to display the BDRV OSD item.
14. Press 3 or 6 to adjust for the best white balance.
15. Press MUTING then ENTER to save into the memory.
4-7. AW 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 AW Board.
3. Check H. Frequency for 15735 ± 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 AW Board .
4. Check that V. Frequency shows 60 ± 4 Hz.
Drive (SCON)
1. Input a color-bar signal and set the level to 75%.
2. Set in Pro mode + PICTURE MAX.
3. Access Service Adjustment Mode.
4. Press 2 or 5 to select the VP1 device.
5. Press 1 or 4 to display the GON OSD item.
6. Press 3 or 6 to adjust to 0.
7. Press 1 or 4 to display the BON OSD item.
8. Press 3 or 6 to adjust to 0.
Note: Leave RON set to “1”.
R
ON:
ON
(1)
G
ON:
OFF
(0)
B
ON:
OFF
(0)
9. Connect an oscilloscope probe to C Board, CN705 pin3 (KR).
10. Press 1 or 4 to display the SCON OSD item.
35
KV-21FA310/21FV210/29FA310/29FS110/29FV210
KV-21FA310/21FV210/29FA310/29FS110/29FV210
Sub Hue, Sub Color Adjustment
(SHUE, SCOL)
1. Input color-bar signal at 75%.
2. Access Service Adjustment Mode.
3. Set (PIC) to Max and (COL) to 50%.
4. Connect an oscilloscope probe to C Board, CN705 pin 4 (Blue Out).
5. Press 2 or 5 to select the VP1 device.
5. Press 2 or 5 to select the VP1 device.
6. Press 1 or 4 to display the SHUE or SCOL OSD item.
7. While showing the SHUE OSD item, adjust the waveform by pressing
3 or 6 until the second and third bars show the same level
(V2 = V3 < 0.15Vp-p). Set Sub Hue -2 Step.
8. While showing the SCOL OSD item, adjust the waveform by pressing
3 or 6 until the fi rst and fourth bars show the same level
(V1 = V4 < 0.15Vp-p). Set Sub Col + 2 Step.
V1 V2 V3 V4
9. Press MUTING then ENTER to write into memory.
V. Size Adjustment (VSIZ)
1. Input a crosshatch signal.
2. Access Service Adjustment Mode.
3. Press 2 or 5 to select the DEF device.
4. Press 1 or 4 to display the VSIZ OSD item.
5. Adjust value of VSIZ by pressing 3 or 6 for the best vertical size.
6. Press MUTING then ENTER to write into 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. Access Service Adjustment Mode.
3. Press 2 or 5 to select the DEF device.
4. Press 1 or 4 to display the VPOS OSD item.
5. Adjust value of VPOS by pressing 3 or 6 for the best vertical center.
6. Press MUTING then ENTER to write into memory.
H. Center Adjustment (HPOS)
Perform this adjustment after performing H. Frequency (Free Run)
Check.
1. Input a crosshatch signal.
Check.
1. Input a crosshatch signal.
2. Access Service Adjustment Mode.
3. Press 2 or 5 to select the DEF device.
4. Press 1 or 4 to display the HPOS OSD item.
5. Adjust the value of HPOS by pressing 3 or 6 for the best horizontal
center.
6. Press MUTING then ENTER to write into memory.
H. Size Adjustment (HSIZ)
1. Input a monoscope signal.
2. Access Service Adjustment Mode.
3. Press 2 or 5 to select the DEF device.
4. Press 1 or 4 to display the HSIZ OSD item.
5. Adjust value of HSIZ by pressing 3 or 6 for the best horizontal size.
6. Press MUTING then ENTER to write into memory.
36
KV-21FA310/21FV210/29FA310/29FS110/29FV210
KV-21FA310/21FV210/29FA310/29FS110/29FV210
V. Linearity (VLIN), V. Correction (SCOR),
PIN Amp (PAMP), and Trapezoid (TRAP)
Adjustments
Adjustments
1. Input a crosshatch signal.
2. Access Service Adjustment Mode.
3. Press 2 or 5 to select the DEF device.
4. Press 1 or 4 to display the VLIN OSD item.
5. Adjust the value of VLIN by pressing 3 or 6 for the best horizontal
size.
6. Repeat steps 4 and 5 for SCOR, PAMP, and TRAP.
7. Press MUTING then ENTER to write into memory.
V LINEARITY (VLIN)
V CORRECTION (SCOR)
PIN AMP (PAMP)
TRAPEZOID (TRAP)
V. Angle (VANG), V. Bow (VBOW), Upper PIN
(UPIN) and Low PIN (LPIN) Adjustments
1. Input a crosshatch signal.
2. Access Service Adjustment Mode.
3. Press 2 or 5 to select the DEF device.
4. Press 1 or 4 to display the VANG OSD item.
5. Adjust the value of VANG by pressing 3 or 6 for the best picture.
6. Repeat steps 4 and 5 for VBOW, UPIN, and LPIN.
7. Press MUTING then ENTER to write into memory.
V ANGLE (VANG)
V BOW (VBOW)
UPPER PIN (UPIN)
LOW PIN (LPIN)
Reading Adjustments to Memory
1. After completing all adjustments, 0 then ENTER to read into
memory.
Device
OSD
Item
Initial
Data
Value
Signal
Type
Type
Channel
Type
Type
NTSC
READ
DEF
M6J586MK-050FP
F1.2
HSIZ
1:35 NVM:OK
Text
changes to
“READ” and
changes
colors from
green to red
changes to
“READ” and
changes
colors from
green to red
37
KV-21FA310/21FV210/29FA310/29FS110/29FV210
KV-21FA310/21FV210/29FA310/29FS110/29FV210
5-1. CIRCUIT BOARDS LOCATION
AW Board
C Board
(29” Models Only)
(29” Models Only)
V Board
(29” Models Only)
(29” Models Only)
KV-29FA310 Pictured
HE Board (KV-21FA310/21FV210 Only)
HS Board (KV-29FS110 Only)
HU Board (KV-29FA310/29FV210 Only)
HS Board (KV-29FS110 Only)
HU Board (KV-29FA310/29FV210 Only)
KS Board (KV-21FA310 Only)
KT Board (KV-29FA310 Only)
BS Board(KV-29FS110 Only)
TW Board(KV-29FV210 Only)
KT Board (KV-29FA310 Only)
BS Board(KV-29FS110 Only)
TW Board(KV-29FV210 Only)
HW Board
(All Except KV-29FS110)
Note: 21” Models
have combined
CV Board
have combined
CV Board
MT Board
W Board
All voltages are in V.
S : Measurement impossibillity.
: B+line.
: B-line.
(Actual measured value may be different).
: signal path. (RF)
Circled numbers are waveform references.
SECTION 5: DIAGRAMS
The components identifi ed by shading and
!
symbol are critical for safety. Replace only with
part number specifi ed.
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.
board. Replace only with fuse of the same rating
as marked.
5-2. PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM 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=1000, M=1000k
Indication of resistance, which does not have one for rating electrical
power, is as follows: Pitch : 5mm Rating electrical power :
power, is as follows: Pitch : 5mm Rating electrical power :
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 digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production tolerances.
Click on the first or last page to see other KV-21FA310 (serv.man2) service manuals if exist.