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KV-24FS100 Schematic ( PDF Datasheet ) - Sony

Teilenummer KV-24FS100
Beschreibung COLOR TV SERVICE MANUAL
Hersteller Sony
Logo Sony Logo 




Gesamt 30 Seiten
KV-24FS100 Datasheet, Funktion
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
SERVICE MANUAL
MODEL NAME
KV-24FS100
KV-24FS100
KV-25FS100
KV-25FS100
REMOTE COMMANDER
RM-Y173
DESTINATION
US
RM-Y173
CND
RM-Y173 LATIN NORTH
RM-Y173 LATIN SOUTH
BA-6 CHASSIS
CHASSIS NO.
SCC-S61D-A
SCC-S59D-A
SCC-S60J-A
SCC-S60K-A
ORIGINAL MANUAL ISSUE DATE: 5/2002
ALL REVISIONS AND UPDATES TO THE ORIGINAL MANUAL ARE APPENDED TO THE END OF THE PDF FILE.
REVISION DATE
5/2002
9/2002
4/2003
REVISION TYPE
SUBJECT
No revisions or updates are applicable at this time
Correction -1
Added step #4 to 2-4. SCREEN (G2) instructions.
Replaced A Board IC Voltage List.
Correction -2
Replaced A Board Transistor Voltage List (Q600, Q601) (Page 33)
Replaced A Board IC Voltage List (IC600) (Page 34).
9-965-928-03
TRINITRON® COLOR TELEVISION
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KV-24FS100 Datasheet, Funktion
SAFETY CHECK-OUT
KV-24FS100/25FS100
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and
bridges.
2. Check the interboard wiring to ensure that no wires are “pinched” or
touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors, that
were installed during a previous repair. Point them out to the customer
and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7. Check the B+ and HV to see if they are specified values. Make sure
your instruments are accurate; be suspicious of your HV meter if sets
always have low HV.
8. Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
Leakage Test
To Exposed Metal
Parts on Set
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instructions.
2. A battery-operated AC milliampmeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication is
0.75 V, so analog meters must have an accurate low voltage
scale. The Simpson’s 250 and Sanwa SH-63TRD are examples of
passive VOMs that are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable (see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate
retaining screw on most AC outlet boxes is also at earth ground. If the
retaining screw is to be used as your earth ground, verify that it is at
ground by measuring the resistance between it and a cold-water pipe
with an ohmmeter. The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt
trouble- light (not a neon lamp) between the hot side of the receptacle
and the retaining screw. Try both slots, if necessary, to locate the hot
side on the line; the lamp should light at normal brilliance if the screw
is at ground potential (see Figure B).
0.15 F
1.5 K
AC
Voltmeter
(0.75 V)
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pipe
Earth Ground
Figure A. Using an AC voltmeter to check AC leakage.
Figure B. Checking for earth ground.
—6—
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6 Page









KV-24FS100 pdf, datenblatt
KV-24FS100/25FS100
2-2. CONVERGENGE
Before starting convergence adjustments:
1 Perform FOCUS, VLIN and VSIZE adjustments.
2. Set BRIGHTNESS control to minimum.
3. Feed in dot pattern.
VERTICAL STATIC CONVERGENCE
1. Adjust V. STAT magnet to converge red, green and blue dots in the
center of the screen (Vertical movement adjust S V.STAT RV1750
to converge).
Center dot
R
G
B
HORIZONTAL STATIC CONVERGENCE
If the blue dot does not converge with the red and green dots, peform
the following:
1. Move BMC magnet (a) to correct insufficient H.Static convergence.
2. Rotate BMC magnet (b) to correct insufficient V.Static convergence.
3. After adjusting the BMC magnet, repeat Beam Landing Adjustment.
V.STAT
RG B
RV1750
V.STAT
PURITY
V.STAT magnet
2. Tilt the V. STAT magnet and adjust static convergence to open or
close the V. STAT magnet.
b
When the V. STAT magnet is moved in the direction of arrow a and
b, red, green, and blue dots move as shown below:
1
a
bb
2a
ab
BB
GG
RR
a
R GB
bb
B GR
3
b
aa
b
RB
bG
B
G
R
— 12 —
BMC magnet
a
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12 Page





SeitenGesamt 30 Seiten
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