Power Requirement AC 120V, 60Hz
Power Consumption250W (1.7W in standby)
Dimensions(W/H/D)890 x 573 x 560 mm
Weight 64kg
AntennaTwo 75 ohm external input terminals for UHF/VHF/Cable
RF Band Coverage VHF 2 ~ 13
Screen Size
Display Format
Horizontal Resolution
Digital Audio
NTSC Audio
Audio Power
A/V In
S-Video In
HD Component Video In
HD Component Audio In
Digital Audio In
Digital Audio Out
External Speaker Out
One 75ohm external output terminal for Cable
UHF 14 ~ 69
CATV 1, 14 ~ 125
32 inches Pure Flat 16:9 Aspect ratio
1920 x 1080i (Digital)
Upconversion to 1080i with line doubling (NTSC)
800 Lines
Dolby Digital AC-3 / Pro logic
Multi-CH TV Stereo (MTS) / Second Audio Program (SAP)
8W / ch (Main L/R, Woofer), 5W / ch (Center, SL, SR)
4 each (Video / L / R)
2 each
2 each ( Y/ Pb / Pr, R / G / B )
1 each ( L / R / SL / SR / Center / Woofer )
2 each ( Coaxial / Optical )
2 each ( Coaxial / Optical )
1 each ( SL / SR / Woofer)
9. Parts List.........................................................................................................................................45
1.PRODUCT SAFETY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVERS
CAUTION : Do not attempt to modify this product in any way. Unauthorized modifications will not only void the warranty, but may lead to
your being liable for any resulting property damage or user injury.
Service work should be performed only after you are thoroughly
familiar with all of the following safety checks and servicing guidelines. To do otherwise, increases the risk of potential hazards and
injury to the user.
SAFETY CHECKS
After the original service problem has been corrected, a check should
be made of the following:
SUBJECT : FIRE & SHOCK HAZARD
1. Be sure that all components are positioned in such a way as to
avoid possibility of adjacent component shorts. This is especially
important on those chassis which are transported to and from the
repair shop.
2. Never release a repair unless all protective devices such as insulators, barriers, covers, shields, strain reliefs, and other hardware
have been reinstalled per original design.
3. Soldering must be inspected to discover possible cold solder joints,
frayed leads, damaged insulation (including A.C. cord), solder
splashes or sharp solder points. Be certain to remove all loose foreign particals.
4. Check for physical evidence of damage or deterioration to parts
and components, and replace if necessary follow original layout,
lead length and dress.
5. No leads or components should touch a receiving tube or a resistor
rated at 1 watt or more. Lead tension around protruding metal surfaces must be avoided.
6. All critical components such as fuses, flameproof resistors, capacitors, etc. must be replaced with exact factory types. Do not use
replacement components other than those specified or make
unrecommended circuit modifications.
7. After re-assembly of the set always perform an A.C. leakage test
on all exposed metallic parts of the cabinet, (the channel selector
knob, antenna terminals, handle and screws) to be sure the set is
safe to operate without danger of electrical shock. Do not use a
line isolation transformer during this test. Use an A.C. voltmeter,
having 5000 ohms per volt or more sensitivity, in the following
manner : connect a 1500 ohm 10 watt resistor, paralleled by a 15
mfd. 150V A.C. type capacitor between a known good earth
ground (9water pipe, conduit, etc.) and the exposed metallic parts,
one at a time. Measure the A.C. voltage across the combination of
1500 ohm resistor and 0.15 MFD capacitor. Reverse the A.C. plug
and repeat A.C. voltage measurements for each exposed metallic
part. Voltage measured must not exceed 0.75 volts R.M.S. This
corresponds to 0.5 milliamp A.C. Any value exceeding this limit
constitutes a potential shock hazard and must be corrected immediately.
A.C. VOLTMETER
GRAPHIC SYMBOLS :
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to alert
the service personnel to the presence of uninsulated “ dangerous voltage” that may be of sufficienty magnitude to constitute a risk of electric
shock.
The exclamation point within an equilateral triangle is intended to alert the service personnel
to the presence of important safety information
in service literature.
Fuse symbol is printed on pcb adjacent to the
fuse, with “ RISK OF FIRE REPLACE FUSE AS
MARKED” . The symbol is explained in the service manual with the following wording or equivalent.
CAUTION :
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD, REPLACE ONLY WITH SAME TYPE (6.3A, 125V)” and
“
ATTENTION
: AFIN D’ ASSU UNE PROTECTION PERMANENTE
CONTRE LES RISQUES D’ INCENDIE, REMPLACER UNIQUEMENT PAR UN FUSIBLE DE MEME TYPE ET DE ” 6.3A, 125V” .
SUBJECT : X-RADIATION
1. Be sure procedures and instructions to all service personnel cover
the subject of X-rays in current T.V. receivers is the picture tube.
However, this tube does not emit X-rays when the high voltage is
at the factory specified level. The proper value is given in the applicable schematic. Operation at higher voltages may cause a failure
of the picture tube or high voltage supply and, under certain circumstances, may produce radiation in excess of desirable levels.
2. Only factory specified C.R.T. anode connectors must be used.
Degaussing shields also serve as X-ray shield in color sets.
Always re-install them.
3. It is essential that the serviceman has available an accurate and
reliable high voltage meter. The calibration of the meter should be
checked perio - dically against a reference standard. Such as the
one available at your distributor.
4. When the high voltage circuitry is operating properly there is no
possibility of an X-radiation problem. Every time a color chassis is
serviced, the brightness should be run up and down while monitoring the high voltage with a meter to be certain that the high voltage
does not exceed the specified value and that it is regulating correctly. We suggest that you and your service organization review
test procedures so that voltage regulation is always checked as a
standard servicing procedure. And that the high voltage reading be
recorded on each customer’ s invoice.
5. When troubleshooting and making test measurements in a receiver
with a problem of excessive high voltage, avoid being unnecessarily
close to the picture tub eand the high voltage compartment.
Do not operate the chassis longer than is necessary to locate the
cause of excessive voltage.
6. Refer to HV, B+and Shutdown adjustment procedures described in
the appropriate schematic and diagrams(where used).
Good earth ground,
such as the water
pipe, conduit, etc.
0.15 uF
1500 OHM
10WATT
Place this probe
on each exposed
metal part.
2
Page 4
SUBJECT : IMPLOSION
1. All direct viewed picture tubes are equipped with an integral implosion protection system, but care should be taken to avoid damage
during installation. Avoid scratching the tube. If scratched, replace
it.
2. Use only recommended factory replacement tubes.
SUBJECT : TIPS ON PROPER INSTALLATION
1. Never install any receiver in closed-in recess, cubbyhole or closely
fitting shelf space over, or close to heat duct, or in the path of
heated air flow.
2. Avoid conditions of high humidity such as : Outdoor patio installations where dew is a factor. Near steam radiators where steam
leakage is a factor, etc.
3. Avoid placement where draperies may obstruct rear venting. The
customer should also avoid the use of decorative scarves or other
coverings which might obstruct ventilation.
4. Wall and shelf mounted installations using a commercial mounting
kit, must follow the factory approved mounting instructions. A
receiver mounted to a shelf or platform must retain its original
feet(or the equivalent thickness in spacers) to provide adequate
are flow across the bottom, bolts or screws used for fasteners
must not touch and parts or wiring. Perform leakage test on customized installations.
5. Caution customers against the mounting of a receiver on sloping
shelf or a tilted position, unless the receiver is properly secured.
6. A receiver on a roll-about cart should be stable on its mounting to
the cart. Caution the customer on the hazards of trying to roll a cart
with small casters across thresholds or deep pile carpets.
7. Caution customers against the use of a cart or stand which has not
been listed by underwriters laboratories, inc. For use with their
specific model of television receiver or generically approved for
use with T.V.’ s of the same or larger screen size.
3
Page 5
2. Specification
General
Power Requirement AC 120V, 60Hz
Power Consumption250W (1.7W in standby)
Dimensions(W/H/D)890 x 573 x 560 mm
Weight 64kg
AntennaTwo 75 ohm external input terminals for UHF/VHF/Cable
One 75ohm external output terminal for Cable
RF Band Coverage VHF 2 ~ 13
UHF 14 ~ 69
CATV 1, 14 ~ 125
Picture
Screen Size 32 inches Pure Flat 16:9 Aspect ratio
Display Format 1920 x 1080i (Digital)
Upconversion to 1080i with line doubling (NTSC)
Horizontal Resolution 800 Lines
Sound
Digital Audio Dolby Digital AC-3 / Pro logic
NTSC AudioMulti-CH TV Stereo (MTS) / Second Audio Program (SAP)
Audio Power8W / ch (Main L/R, Woofer), 5W / ch (Center, SL, SR)
Number of Inputs / Outputs
A/V In4 each (Video / L / R)
S-Video In 2 each
HD Component Video In 2 each ( Y/ Pb / Pr, R / G / B )
HD Component Audio In 1 each ( L / R / SL / SR / Center / Woofer )
Digital Audio In2 each ( Coaxial / Optical )
Digital Audio Out2 each ( Coaxial / Optical )
External Speaker Out 1 each ( SL / SR / Woofer)
4
Page 6
33. Remote control overview
The remote control has the following functions:
1. Power button
Press to turn the HDTV(and other equipment) on
and off.
2. MODE buttons
Press to select which equipment you wish your remote
control to operate:
* SAT(satelite)
* CATV (cable box)
* VCR
* TV
The Mode button you press will light up in red.
3. MENU button
Press once to display the HDTV menus. Press again to
make the menus disappear.
4. SEL ( Select) button
Press to select items on the HDTV menus.
5. Arrow buttons
Press to navigate through the HDTV menus.
6. STAT (Channel Station) button
Press to quickly select chammels to watch on your
HDTV.
7. VOL (Volume) buttons
press to raise and lower the volume on your HDTV.
8. Number buttons
Press to directly select channels or to enter the numbers
in the menus.
9. INFO (Information) button
Press to see the channel banner that provides information
while viewing your HDTV.
10. V MODE (Video Mode) button
Press to select a video mode : Normal, Dynamic,
Cinema or Customer.
5
Page 7
Remote control overview
11. SOUND button
Press to select a sound option : Mono, Stereo, or Secondary
Audio Programming (SAP). When you tune to a digital
channel, press to select various languages.
12. SLEEP TIMER button
Press to select the time before the HDRV turns off: 30
minutes, 60 minutes, 90 minutes, or 120 minutes.
13. CLOSED CAPTION button
Press to turn closed captions on and off.
14. FF (Fast Forward) button.
Press to fast forward a videocassette.
15. PLAY button
Press to play a videocassette.
16. PAUSE button
Press to pause a VCR.
24. PREV (Previous) button
Press to back up one menu at a time in the HDRV menus or to
return to the previous channel.
25. GUIDE button
Press this button to see the HDTV Program Guide.
26. MUTE button
Press to mute the HDTV sound.
27. TV / VIDEO button
Press to view components you have connected to the HDTV.
Press this button repeatedly to display:
* TV mode
* HD comp (HD Component Video)
* Video 1
* Video 2
* Video 3
* Video 4
17. REC(Record) button
Press to record a videotape.
18. STOP button
Press to stop a VCR.
19. REW (Rewind) button
Press to rewind a videocassette.
20. SCREEN MODE button
Press to select how to view your HDTV:
Normal or Full.
21. ADD / ERASE button
Press to add and erase channels on your HDTV.
22. 100 button
Press to select cable channels over 100 on TV or DSS
broadcasts.
23. CH (Chnnel) buttons
Press to select channels.
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Page 8
4. Limited Warranty
Daewoo Electronics Corporation of America Inc. (also known as DECA) warrants this product to be free from defects in material
and workmanship and agrees to remedy any such defect.
This warranty covers 3 years labor and 3 years parts from the date of original purchase.
This warranty applies only to product purchased from authorized DECA dealer and used within the boundaries of U.S.A.
This warranty does not apply to product that has been improperly installed, subjected to usage for which the product was not
designed, misused or abused, damaged during transportation, or which has been altered in any way that affects the reliability or
detracts from its performance.
How you get warranty service
Warrany service can only be provided by an authorized DECA service center. For the closest authorized service center to you,
please contact your Dealer. In order to receive warranty service you must provide the authorized service center with a copy of proof
of purchase, signifying the date of purchase and the name of the Dealer from whom you purchased the product.
Statutory warranities
The purchase may have rights under existing provincial or federal laws, and where any terms of this warranty are prohibited by
such laws, they ard deemed null and void, but the remainder of the warranty shall remain in effect.
Side Pin W
Side Pin S
Trapezoid
Side Pin Balance
H Duty
Parallelogram
H Focus Phase
H Focus Amplitude
22
34
33
31
31
28
31
60
6) S6 : No Use
7) S7 : White Balance Adjustment mode
White Balance Control
Drive R 128
Initial value
G 32
B 128
Bias R 64
G 224
B 64
8) S8 : Sub Brightness Adjustment mode.
Brightness 24
Contrast 22
Initial value
Color 32
Tint 37
Coring 63
VM Gain 27
VM Limit 40
9) S9 : Software Version
2000/04/06 08:30 AM
10) S12 : Factory Setting
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Page 11
Service Modes
3. Selecting the adjusting items
1) With the user remote control
Pressing of ARROW s button changes the adjustment items. (t button for reverse order)
2) With the service remote control
Pressing of CHANNEL s button changes the adjustment items. (t button for reverse order)
4. Adjusting the data
1) With the user remote control
Pressing of ARROW button changes the value of data. ( button for reverse order)
2) With the service remote control
Pressing of VOLUME button changes the value of data. ( button for reverse order)
3
3
4
4
5. Exit from Service Mode
Press again to make service mode exit.
10
Page 12
6. General Adjustment
In the majority of cases, a high definition digital television will need basic adjustments such as high voltage, screen voltage, focus,
white balance, sub brightness, geometry, and blanking width. All adjustments should be performed after heat-running the set for at
least 20 minutes.
1. Press the S1 button on the service remote control, and then full white pattern will appear on the screen.
2. Press again the S1 button, and then the pattern will disappear.
High Voltage Adjustment
1. Operate the set for at least 20 minutes.
2. Connect the probe of high voltage meter to CRT ANODE.
3. Adjust the variable register RV801 on the power assembly so that high voltage may be to be between 29.5KV ~ 30.5KV.
Screen Voltage Adjustment
1. Press the S2 button on the service remote control.
1) Video Input mode will be VIDEO 1.
2) Vertical deflection will be down, and a horizontal line will appear on the screen.
2. Turn the variable screen volume of FBT to adjust screen voltage, at the point that a horizontal line only just appears.
Focus Adjustment
1. Tune on Retma pattern.
2. Turn the variable focus volume of FBT so that the center area of screen is sharp scanning line.
3. Turn the variable volume R522 on the CRT assembly so that the edge of screen may be sharp scanning line.
White Balance Adjustment
1. Input the Black & white signal to the HD Component jack on the rear panel.
<Black & White Pattern>
Light Area Check
Dark Area Check
2. The color temperature is the following.
3 x=0.270 6 0.005 y=0.270 6 0.0053 Color temperature : 10500 8K
3. Light Area Adjustment
1) Press S7 button.
2) On the center of light area, attach the sensor of a white balance meter.
3) To be Y=125, turn the Light Beam control volume on the White & Black pattern generator.
4) To adjust the white balance of light area, select Drive R, G, B with CHANNEL Up or Down buttons, and adjust individual
vales with VOLUME Up or Down buttons.
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General Adjustment
4. Dark Area Adjustment
1) On the center of dark area, attach the sensor of a white balance meter.
2) To be Y=12, turn the Dark Beam control volume on the White & Black pattern generator.
3) To adjust the white balance of dark area, select Bias R, G, B with CHANNEL Up or Down buttons, and adjust individual
values with VOLUME Up or Down buttons.
4) Repeat two processes above until the white balance is completed.
Sub Brightness Adjustment
1. Tune on Retma Pattern.
2. Press S8 button.
3. The following OSD menu will appear on the screen, and the data are initial balues before adjusting.
Brightness 24
Contrast
Color
Tint
Coring
VM Gain
VM Limit
22
32
37
63
27
40
No need to adjust.
4. To be between Step 40% and 50% on the Contrast Chart, perform fine adjustment of sub brightness.
40%30%20%10%
50%0%0%5%
60%70%80%100%
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Geometry
1. To adjust V-Position, H-Size, H-Position and so forth, tune on Retma Pattern.
2. To adjust Pincushion, Parallelogram and so forth, tune on Cross Hatch signal.
3. Screen Mode should be on Full mode, and the Video Mode should be on Normal mode.
4. Press S5 button to adjust Geometry.
5. With Up/Down buttons, perform the adjustment items in the following order.
ItemScreen ImageAdjustment Procedure
General Adjustment
V Size Max.
1) Receive NTSC Retma signal.
2) The Screen mode should be selected on Full mode
3) Adjust Vertical Size so that over scanning rate may be 105%.
4) Check if the center circle is not only circular on Full mode
but also on Normal mode.
Over Scanning Rate: 105%
Vertical Size1) There is no need to adjust.
2) Check if the value of data is "0".
Vertical
Position
1) Receive NTSC Retma signal.
2) The Screen mode should be selected on Full mode.
3) Adjost Vertical Position so that the circle of Retma signal
may be centered in the verical direction.
VC
Linearity
1) Receive NTSC Retma signal.
2) The Screen mode should be selected on Full mode.
3) When the center area of Retma signal's circle is S type in the
vertical direction, adjust VC Linearity so that vertical interval
may be the same.
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General Adjustment
ItemScreen ImageAdjustment Procedure
1) Receive NTSC Retma signal.
2) The Screen mode should be selected on Full mode
3) When the center area of Retma signal’s circle is S type
V S
Linearity
Horizontal
Size
in the vertical direction, adjust VS Linearity so that
vertical interval may be the same.
1) Receive NTSC Retma signal.
2) The Screen mode should be selected on Full mode
3) Adjust Horizontal Size for over scanning rate 106%
4) Check if the center circle of Retma signal is circle on
Normal mode.
Horizontal
Position
Pincushion
Side Pin W
1) Receive NTSC Retma signal.
2) The Screen mode should be selected on Full mode.
3) Adjust Vertical Position so that the circle of Retma
signal may be centered in the vertical direction.
1) Receive NTSC Cross Hatch signal.
2) The Screen mode should be selected on Full mode.
3) When the vertical lines of the left and right side are
distorted such as the left figure, adjust Pincushion so
that the vertical lines may be straight.
1) Receive NTSC Cross Hatch signal.
2) The Screen mode should be selected on Full mode.
3) When the vertical lines of the left and right side are
not straight but distorted in the W type, adjust Side
Pin W to correct the unbalanced vertical lines.
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Page 16
ItemScreen ImageAdjustment Procedure
1) Receive NTSC Cross Hatch signal.
2) The Screen mode should be selected on Full mode.
3) When the vertical lines of the left and right side is not
Side Pin S
straight but distorted in the S type, adjust Side Pin S
to correct the unbalanced vertical lines.
1) Receive NTSC Cross Hatch signal.
2) The Screen mode should be selected on Full mode.
3) When the screen shape is not rectangular but
Trapezoid
trapezoid, adjust Trapezoid to correct the unbalanced
shape.
1) Receive NTSC Cross signal.
2) The Screen mode should be selected on Full mode.
Side Pin
Balance
3) When both the left and right screen shape is not
symmetrical but on one side, adjust Side Pin Balance
to correct the unbalanced shape.
General Adjustment
H Duty
Paralle-
logram
H Focus
Phase
400Vp-p
900Vp-p
60HZ
1) There is no need to adjust.
2) Check if the value of data is "31".
1) Receive NTSC Cross Hatch signal.
2) The Screen mode should be selected on Full mode.
3) When both the left and right screen shape is on one
side, adjust Parallelogram to correct the unbalanced
shape.
1) There is no need to adjust, and check if the value of
data is "32".
2) Check that the focus on the right and left side is clear.
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Page 17
General Adjustment
ItemScreen ImageAdjustment Procedure
H Focus
Amplitude
400Vp-p
900Vp-p
60Hz
1) There is no need to adjust, and check if the value of
data is "32".
2) Check if the focus on the right and left side is clear.
Blanking Width
1. Tune on NTS Retma pattern.
2. Press Screen mode on the remote control, and then slelct Normal. mode.
3. To be symmetrical the screen, adjust Blanking Width with rotating the variable volume RU19 on the Blanking Board.
Y Level Adjustment (to DTV Decoder module)
1. Tune on SMPTE Color Bar signal.
2. Connect a scope probe to pin 9 of PW06V.
3. Adjust RV900 such as the following figure so that the amplitude of Y level may be 0.7Vp-p.
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Page 18
7. Special Adjustment (When replacing new circuit boards)
1. DTV Decoder module
1) Before replacing a new module, if seeing OSD menu is possible, record the adjusted data value of White Balance and
Geometry.
2) After replacing the defective module with a new one, memorize the value of data value to the new DTV decoder module
with the service remote control.
3) Perform the Y Level Adjustment.
2. Power assembly
1) After replacing a new assembly, perform High Voltage Adjustment.
2) The rest are no need to adjust.
3. Main assembly
1) After replacing a new assembly, perform Blanking Width Adjustment.
2) X-Rediation Protection Circuit Test
When service has been performed on the horizontal deflection system, high voltage system or B+ system, the X-Radiation
Protection Circuit Test must be tested for proper operation as follows:
2-1) Operate the HDTV set for at least 15 minutes.
2-2) Perform this test at the normal video and sound.
2-3) Check the cathode voltage of D837. Its voltage should be about 26VDC.
2-4) Connect a resister 24K(1/4W) with parallel to R925.
2-5) Then the set will be shut down, lighting up red to the power indicator.
2-6) If it is not, the circuit of X-Radiation Protection must be repaired before the set is returned to the customer.
3) The rest adjustment idems are no need to adjust.
4. Video assembly
1) No need to adjust.
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Page 19
Special Adjustment
No Picture
(NTSC Signal)
OSD is on the screen.
AV SignalRF Signal
Check video signal of IC210.
Video 1 : CVBS to pins 43 ,Y to pin 45,
and C to pin 47
Video 2 : CVBS to pin 7
Video 3 : CVBS to pin 27
Video 4 : CVBS to pin 1 ,Y to pin 3, and
C to pin 5
NO
Check each
YES
CVBS is to pin 34 of IC210.Check IC210.
input signal.
Check if CVBS is 1Vp-p to pin 88 of ICA1.Check QCA9 , FA3, andQCA11
NO
To DTV Decoder Module
CVBS is to pin 13 of PW01M
NO
Check Tuner (U101).
YES
NO
YES
NO
YES
Check if Y output is 0.9Vp-p to Yout of PV1.
YES
Check if the color burst of C signal is 170~180mV to Cout of PV1.
V1
18
NO
Check QCA4, FA1, and QCA1
NO
Check QCA8, FA2, and QCA5
Page 20
8. Troubleshooting charts.
V1
When input signal is color bar, check the following output level
to PA06D.
Y=0.7Vp-p ± 0.1Vp-p
Pb=0.6Vp-p ±0.1Vp-p
Pr=0.6Vp-p±0.1Vp-p
YES
NO
To DTV Decoder Module
Check the input and output signal of IC208.
Pins 9, 10, and 11 : Low (Base of QC215 : High)
Pin 14 : Y signal Pin 15 : Pb signal
Pin 4 : Pr signal
YES
Check if Y, Pb, and Pr are input
VIDEO
Check if Y, Pb, and Pr are input to pins 58, 59, and
57 of IC200.
to pins 45, 47, and 1 of IC200.
YES
V2
NO
NO
Check IC208
Check logical state to pin 52 of 212 IC.
NTSC, DTV signal : High
External HD Component : Low
Check the following parts.
NO
Y : Q204, Q205 Pb : Q202, Q203
Pr : Q200, Q201
Check the following parts.
Y : pin 27 of IC200, Q208, Q209, and Q210
Pb : pin 15 of IC200 Pr : pin 13 of IC200
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Page 21
Troubleshooting charts
V2
Signals R, G, and B are to pins 2, 4, and 6 of PW07K.
YES
There are R signal to R504, G signal to R513, and
B signal.
<The signal amplitude of cathode G >
130Vp-p ±10Vp-p
Input signal : 10 steps pattern
Video mode : Normal mode
END
NO
Check the following parts.
R : pin 25 of IC201, Q218
G : pin31 of IC201, Q216
B : pin 28 of IC201, Q217
NO
Check the following parts.
R: pin8 of IC501, G: pin8 of IC502, B: pin 8 of IC503
Check 200V and 12V of PA17M.
No picture
(DTV Signal)
NO
OSD is on the screen.To DTV Decoder module
V1
V2
END
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Page 22
Y, Pb, Pr Input
Pb/Pr.
Troubleshooting charts
OSD is on the screen.To DTV Decoder module
NO
YES
Check the SELECT SGINAL switch on the rear panel is to Y/
Select the switch to Y/Pb/Pr.
NO
If the switch is selected to R/G/B, the color of screen is pale green.
Check if Y/Pb/Pr signals are well
connected to input terminals.
YES
Check if pin 18 of IC212 is Low.
Check the input/output signal of IC207.
Pins 9, 10, and 11 : Low Pin 14 : Y signal
NO
Pin 15 : Pb signal Pin 4 : Pr signalCheck IC207.
YES
Check the input/output signal of IC208.
NO
Pins 9, 10, and 11 : High (Base of QC215 : Low)
Check IC208
Pin 14 : Y signal Pin 15 : Pb signal Pin 4 : Pr signal
VIDEO
V2
END
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Troubleshooting charts
R, G, B Input
OSD is on the screen.To DTV Decoder module
NO
YES
NO
Check the SELECT SGINAL switch on the rear panel is to R/G/B.Select the switch to R/G/B.
YES
NO
Signals R, G, and B are to pins 7, 8, and 9 of IC201.
Check IC207.
YES
NO
Signals B-Y, Y and R-Y are to pins 3, 4, and 5 of IC201.
Check IC207.
YES
Check the input/output signal of IC207.
NO
Pins 9, 10, 11 : High
Check IC207.
Pin 13 : Y in
Pin 1 : B-Y in
Pin 3 : R-Y in
YES
Check the input/output signal of IC208.
Pins 9, 10, 11 : High (Base of QC215 : Low)
Pin 14 : Y signal Pin 15 : B-Y signal
Pin 4 : R-Y signal
VIDEO
V2
NO
Check IC208.
Check if pin 52 of IC212 is Low.
END
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No sound (NTSC)
R, L
Audio signal output is only R and L.
There are no sound to Center, SL, SR, and Woofer.
Troubleshooting charts
AV Signal
Check if the audio signals are input to the follow
pins of IC210 (CXA1855).
Video 1 : L to pin 44, R to pin 46
Video 2 : L to pin 8, R to pin 10
Video 3 : L to pin 25, R to pin 26
Video 4 : L to pin 2, R to pin 4
YES
Check if R, L signals are output to IC210.
Audio R : pin 32, Audio L : pin 33
Check if R, L signals are input and output to IC215.
Audio L input : pin 50, Audio L output : pin 37
RF Signal
Check the audio base-band signal to SIF of U101.
Amplitude of SIF : 800mVp-p ± 100mVp-p
YES
SIF is to pin 67 of IC215.
YES
NO
Check IC210
YES
NO
Check IC215
Audio R input : pin 51, Audio R output : pin 36
Decoder
Check if R, L signals are input to IC215
DEC_L : pin 56, DEC_R : pin 57
YES
Check if R, L signals are output to IC215.
Audio L : pin 28, Audio R : pin 27
YES
A1
YES
NO
To DTV Decoder module
Check IC215
NO
IC215 controls the volume of R, L.
The balance control is performed to DTV
decoder module.
23
Page 25
Troubleshooting charts
A1
Check if R, L signals are input and output to I609.
(The audio output of I609 is equalized signal.)
Audio L input : pin 1, Audio R input : pin 30
Audio L output : pin 12, Audio R output : pin 19
YES
Check if R, L signals are input and output to I607.
Audio L input : pin 4, Audio R input : pin 2
Audio L output : pin 8, Audio R output : pin 12
END
NO
Check I609
24
Page 26
No sound (External HD)
Check the input /output signal of volume control IC.
R, L
SL, SL, Center, and WooferR, L
Troubleshooting charts
Check the following audio signals.
SL input / output : pins 12, 6 of I603
SR input / output : pins 16, 2 of I603
C input /output : pins 9, 7 of I602
W input /output : pins 9, 7 of I603
YES
A2
SL input / output : pins 6, 7 of I606
SR input / output : pins 4, 3 of I606
Center input / output : pins 6, 7 of I605
Woofer input / output : pins 4, 3 of I605
NO
Check I603
and I602.
Check if R, L signals are input and output to IC215.
HD_L input : pin 53 HD_L output : pin 37
HD_R input : pin 54, HD_R output : pin 36
NOYES
Decoder
A1
Check IC215.
END
Check the input /output signal of audio amplifier IC.
SL input / output : pins 4, 8 of I608
SR input / output : pins 1, 11 of I608
Center input / output : pins 1, 11 of I607
Woofer input / output : pins 2, 12 of I608
YES
END
25
Page 27
Troubleshooting charts
R, L
C, W, SR, SL
NO Sound
(RF DTV)
R, LWoofer, Center, SR, SL
Check DEC_R and DEC_L to PA05D.Check S_R, S_L, Center and Woofer to PA12D.
NO
To DTV Decoder module
Decoder
Check the following audio signals.
Decoder
A1
END
S_L input / output : pins 5, 6 of I603
S_R input / output : pins 1, 2 of I603
Center input /output : pins 8, 7 of I602
Woofer input /output : pins 8, 7 of I603
A2
END
26
Page 28
H/V Sync Check
(External HD Component Input)
R/G/B/Hs/VsR/G/B with sync on green or Y/Pb/Pr
Troubleshooting charts
Check the input/output signal of IC202.
Pins 11, 10 : High (Base of QC215 : Low)
HS input : pin 13 HS output : pin 14
VS input : pin 1 VS output : pin 15
NO
YES
S2
Check IC202.
Check the input/output signal of IC203.
H_sync input : pin 6 H_sync output : pin 14
V_sync input : pin 8 V_sync output : pin 13
NO
Check the input/output signal of IC206.
Pins 9, 10, and 11 : High (To be HD Component )
Check IC203.
Low (No HD Component)
Check the input/output signal of IC203
G or Y input : pin 4
HS output : pin 14
VS output : pin 13
NO
Check IC202.
YES
YES
Check IC206.
NO
HD : from pin 15 of IC 206 to PW03M
VD : from pin 4 of IC 206 to PW03M
YES
Check the input signal of I402.
HD signal : pin 26 VD signal : pin 28
S1
27
Page 29
Troubleshooting charts
Check the following signals.
S1
HP : pin 6 of PW01V
5Vp-p
33.75KHz
VP : pin 7 of PW01V
5Vp-p
60Hz
YES
Check HP signal is to pin 13 of IC216 through IC204.
NO
Check IC204
NO
Check HP signal of Q426’s base.
NO
Check VP signal of Q415’s base.
YES
Check VP signal is to pin 21 of IC212.
NO
YES
Check IC204.
Check EVEN/ODD signal is to pin 46 of IC 212
YESNO
YES
Check HP signal is to pin 14 of IC216 .
Check EVEN/ODD signal is to pin 1 of IC216.
Pins 9, 10, and 11 : High (to be HD Component ), Low (no HD Component)
YES
Check IC209.
HP signal is input to pin 1. DEC_HS (HP) is output to pin 15.
EVEN/ODD (VP) signal is input to pin 13.
DEC_VS (EVEN/ODD) signal is output to pin 14.
Pins 9, 10, and 11 : High (to be HD Component ), Low (no HD Component)
YES
DEC_HS and DEC_VS of PA06D to DTV Decoder module
Check IC212.
NO
Check IC216.
Check IC209.
END
28
Page 30
H/V Sync Check
(RF DTV, RF NTSC, AV NTSC)
DEC_HS is to PA06D.
Troubleshooting charts
3.3Vp-p
NO
33.75KHz
DEC_VS is to PA06D.
3.3Vp-p
60Hz
YES
DEC_HS is input / output to pins 15, 2 of IC209.
DEC_VS is input / output to pins 14, 13 of IC209.
Pins 10, 11 of IC 202 : High (Base of QC215 : High)
YES
To DTV Decoder module
NO
Check IC 209.
DEC_HS is input to pin 12 of IC 202.
DEC_VS is input to pin 2 of IC 202.
H_sync is output to pin 14 of IC 202.
V_sync is output to pin 15 of IC 202.
Pins 10 and 11 of IC 202 : High (Base of QC215 : High)
S2
END
29
NO
Check IC 202.
Page 31
Troubleshooting charts
No Raster
Press POWER button, and wait for 2 minutes.
Power LED keeps continuously lighting up green.
YES
IC212 communicates with I402 on the IIC bus.
Check the pins 3 (SDA) and 4 (SCL) of I402.
5Vp-p
NO
YES
Check IC212
and I402.
Check pin 17 (H-Drive output) of I402.
NO
Check if TV micro- processor (IC212) communicates
with DTV Decoder module on UART.
If the LED changes from green to red, check pin 39
(TXD) of IC212.
5Vp-p
Check the pin 38 (RXD) of IC212 or pin 6 of PA05D.
3.3Vp-p
To DTV Decoder module
Vertical Deflection
Horizontal Deflection
Check H Drive signal to emitter of Q420.
12Vp-p
33.75KHz
0.7Vp-p
33.75KHz
High Voltage Drive
HD1
30
Page 32
HD1
Troubleshooting charts
Trigger pulse is input to pin 2 of I407.
2Vp-p
6Vp-p
33.75KHz
YES
The control voltage of H Drive is input to pin 5 of I407.
60Hz
0.5Vp-p
7Vp-p
NO
Check Q416, Q417
NO
Check pin 9 (E/W ) of IC402.
YES
H Drive signal is output to pin 3 of I407.
12Vp-p
33.75KHz
HD2
NO
Check I407.
31
Page 33
Troubleshooting charts
HD2
Check 200VA to PA14M.To No Power
NO
YES
H Drive signal is output to Source of Q423.
200Vp-p
33.75KHz
YES
Horizontal Drive B+ to R481 is about 130Vp-p ±10Vp-p .
60Hz
NO
Check Q423.
YES
The voltage waveform of Q425’s collector is the following.
1400Vp-p ±50Vp-p
END
10Vp-p
130Vp-p
If the impedance value of Q425’s
NO
collector is near zero Ω, the
horizontal deflection TR (Q425)
is dead. Replace Q425.
32
Page 34
High Voltage Drive
Check pin 17 (H-Drive output) of I402.
Troubleshooting charts
0.7Vp-p
33.75KHz
YES
Check H Drive signal to emitter of Q402.
12Vp-p
33.75KHz
NO
Trigger pulse is input to pin 2 of I401.
2Vp-p
NO
Check I402.
NO
Check Q403.
6Vp-p
33.75KHz
YES
The control voltage of high voltage feedback is input to
pin 5 of I401.
60Hz
0.25Vp-p
7Vp-p
33
NO
YES
Check I403 and high voltage
feedback circuits.
HVD1
Page 35
Troubleshooting charts
HVD1
High Voltage Drive signal is output to pin 3 of I401.
12Vp-p
33.75KHz
YES
NO
Check 200VB to PA14M.To No Power
YES
High Voltage Drive signal is output to Source of Q407.
200Vp-p
NO
Check I401.
NO
Check Q407.
33.75KHz
YES
FBT B+ to pin 15 of PW16P is about 130Vp-p ±10Vp-p.
60Hz
10Vp-p
110Vp-p
HVD2
NO
Check Q407.
34
Page 36
HVD2
Troubleshooting charts
Check EHT Drive signal to base of Q808.
NO
12Vp-p
33.75KHz
YES
The voltage waveform of Q810’s drain is the following.
815Vp-p
YES
Check emitter of Q401.
NO
Check Q810.
END
35
Page 37
Troubleshooting charts
Vertical Deflection
Vertical SAW waveform is to pin 8 of I402.
2.2Vp-p
60Hz
YES
The following waveform is to pin 1 of I412.
3.5Vp-p
0V
YES
NO
Check I402.
NO
Check vertical deflection circuits
around I412.
Vertical deflection waveform is to pin 5 of I412.
50Vp-p
60Hz
END
36
NO
Check vertical deflection circuits
around I412.
Page 38
No Power
(Standby Power : U801)
The Standby LED doesn’t light up red.
YES
Troubleshooting charts
Approximately 150VDC is to C806.
YES
The following waveform is to drain of U801.
320Vp-p
100KHz
YES
Check if voltages to PA17D is supplied to DTV
Decoder module and TV micro-processor.
NO
Check if F801 is open.
Check D801 (bridge rectifier).
Check the impedance value of between Source
NO
and Drain to U801. If the value is near zero Ω,
U801 is dead. Replace U801.
Check the parts caused a short-circuit to
NO
secondary circuits.
(3.3A, 3.3B, 5V, 32V, 12V, and –12V)
YES
When pressing Power button, the color of Power
LED is green
END
37
Page 39
Troubleshooting charts
No Power
Switch relay (Y802) doesn’t operate.
Fuse (F801) doesn’t short-circuits.Replace F801.
NO
YES
Bridge rectifier (D805) doesn’t short-circuits.
NO
Replace D805.
(The voltage of between Anode and Cathode to
D805 is 0.6V).
YES
NO
Both AC lines of power cord don’t short-circuit.Replace the parts caused a short-circuit.
YES
NO
PWR SW to PW15M is High.Check pin 26 of IC212.
NO
Q804 doesn’t defective.Replace Q804.
YES
Y802 (switch relay) Doesn’t defective.
YES
The parts doesn’t caused a short-circuit to
secondary circuits
YES
P1
NO
ReplaceY802.
NO
Replace defective parts with a new one.
38
Page 40
P1
Replace defective parts with
Troubleshooting charts
The following waveform is to pin 1 of U803 and U805.
370Vp-p
50~80KHz
END
NO Power
Switch relay operation (Y802) is OK.
NO
Check the primary circuits of SMPS IC,
and replace defective parts with a new one.
The parts doesn’t caused a shortcircuit to secondary circuits.
YES
Supply the power to PA17D.S/B SW to PW15 is High.Check pin 13 of IC212.
YES
NO
a new one.
NO
P2P3
NO
39
Page 41
Troubleshooting charts
P2P3
YES
Supply 200VA to PA14M.R803 is OK.ReplaceR803.
YES
Check Regulators.
(U807, U808, U809)
NONO
YES
R815 is OK.
YES
Q802, D815 are OK.Replace Q802, D815.
YES
Check U805.
NO
Replace R815.
NO
Supply 200VB to PA14M.R807 is OK.Replace R807.
YES
Q801, D810 are OK.
YES
Check U803.
END
YES
40
NONO
NO
Replace Q801, D810.
Page 42
DTV Channel Trouble
When NO Signal Searching is not display
Select Input Select on the Setup Menu, and Check
Check Signal Strength.
Check tuner power to pins 6, 11, and 15 of U101.
Troubleshooting charts
Check IF signal to pin 19 of U101.Check AGC to pin 3 of U101.
NO
NO
YES
Check TS stream signal to pins 122,
123, 124, 125 of IC100.
NONO
Check B+, Clock and IIC Bus to
pins 94, 104, and 105 of IC100.
YES
Check Please Back-end A/V function.
END
YES
Change Tuner
U101.
Change IC100
41
Page 43
Troubleshooting charts
(Color and luminance signal is not output.)
Check Y, Pb, and Pr to pins 38, 33, and 39 of IC917(Video DAC).
No Picture to DTV RF
Check Pixcko to pin 27 of IC917.
YES
V1V2
Mosaic Picture to DTV RF
Mosaic picture is displayed on the screen.
NO
Check 27MHz clock to pin 88 of IC901(Video decoder),
and Y/Pb/Pr to pin 93 ~ 125.
NO
If no signal, change IC901.
END
Check 97MHz clock to pin 68 of
IC902 and IC903.
Soldering condition to pins of IC901, IC902, and
IC903 might be wrong. Resolder the pins.
YES
No problem
END
42
NO
NO
Check Pixcko(27MHz) to pin 88
of IC901.
NO
If no signal, change IC901.
Page 44
Loss of H/V sync to DTV RF
L, R
Picture is scrolling due to horizontal or vertical sync loses.
Check H/V sync signal of Video decoder to PW06V.
Check 27MHz clock to pin 88 of IC901(Video decoder),
and Y/Pb/Pr to pin 93 ~ 125.
Troubleshooting charts
Check H/V sync.If no signal, change IC901.
NO
YES
To H/V Sync Check
(RF DTV, RF NTSC, AV NTSC)
END
No sound to DTV RF
(Audio L, R)
NO
Check audio L/R to pins 2, 4 of PW05VCheck pins 21, 22 of IC920 (Codec IC).
YES
NO
Check pins 63, 64, 67, and 73 of IC912.
Decoder
YES
NO
END
Check pins 188, 190, and 197 of IC701 (Transport IC).
NO
If no signal, change IC701.
43
Page 45
Troubleshooting charts
C, W, SR, SL
C, W, SR, SL
No sound to DTV RF
(Audio Center, Woofer)
Check audio C/W to pins 2, 4 of PW12M.Check pins 23, 24 of IC920.
NO
YES
NO
Check pins 63, 64, 67, and 73 of IC912.
Decoder
YES
NO
Check pins 188, 190, and 197 of IC701 (Transport IC).
END
NO
If no signal, change IC701.
No sound to DTV RF
(Audio SL, SR)
Check audio C/W to pins 6, 8 of PW12M.Check pins 25, 26 of IC920.
NO
YES
NO
Check pins 63, 64, 67, and 73 of IC912.
Decoder
YES
NO
Check pins 188, 190, and 197 of IC701 (Transport IC).
END
NO
If no signal, change IC701.
44
Page 46
9. Part List (DSC-30W60N)
CAUTION
" ": The shaded areas in the schematic diagram and the parts list have especial characteristics important for safety and should be replaced only with types
!
identical to those in the original circuit or specified in the part list. Before replacing any of those components, read carefully the PRODUCT SAFETY NOTICE on
this manual. Do not degrade the safety of reciever through improper servicing.
WARNING :
BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION
PRECAUTION”,”SAFETY PRECAUTION” AND “PRODUCT SAFETY
NOTICE”ON THIS MANUAL.
M3814853812800FRAME MAIN PCBFR HIPS BK
M381A7128301212SCREW TAPPINGT2S WAS 3X12 MFZN BK
M381B7128301212SCREW TAPPINGT2S WAS 3X12 MFZN BK
M721A7122401412SCREW TAPPINGT2S TRS 4X14 MFZN BK
PA09S4950711002CONNECTORSMH250-11+YT250+USW=600
PA12D4950708003CONNECTORSMH250-08+YT250+USW=300
PA13D4950706006CONNECTORSMH250-06+YT250+USW=300
PA15P4950713002CONNECTORSMH250-13+YT250+ULW=550
JU185801065GYWIRE COPPERAWG22 1/0.65 TIN COATING
JU285801065GYWIRE COPPERAWG22 1/0.65 TIN COATING
JU385801065GYWIRE COPPERAWG22 1/0.65 TIN COATING
JU485801065GYWIRE COPPERAWG22 1/0.65 TIN COATING
CY1CEXF1H100CC ELECTRO50V RUS 10MF (5X11) TP
CY2CBXF1H104ZC CERA SEMI50V F 0.1MF Z (TAPPING)
CY3CCXF1H102ZC CERA50V F 1000PF Z (TAPPING)
CY4CCXF1H102ZC CERA50V F 1000PF Z (TAPPING)
C501CCXF1H103ZC CERA50V F 0.01MF Z (TAPPING)
C502CEXF1H109VC ELECTRO50V RSS 1MF (5X11) TP
C503CEXF1C470VC ELECTRO16V RSS 47MF (5X11) TP
C504CMXM2A223JC MYLAR100V 0.022MF J TP
C505CMXL2E104KC MYLAR250V MEU 0.1MF K
C506CCXB2H561KC CERA500V B 560PF K (TAPPING)
C507CEXF1H109VC ELECTRO50V RSS 1MF (5X11) TP
C508CCXF1H103ZC CERA50V F 0.01MF Z (TAPPING)
C509CEXF1C470VC ELECTRO16V RSS 47MF (5X11) TP
C510CMXM2A223JC MYLAR100V 0.022MF J TP
C511CMXL2E104KC MYLAR250V MEU 0.1MF K
C512CCXB2H561KC CERA500V B 560PF K (TAPPING)
C513CEXF1H109VC ELECTRO50V RSS 1MF (5X11) TP
C514CCXF1H103ZC CERA50V F 0.01MF Z (TAPPING)
C515CEXF1C470VC ELECTRO16V RSS 47MF (5X11) TP
C516CMXM2A223JC MYLAR100V 0.022MF J TP
C517CXCH1H100DC CERA50V CH 10PF D (TAPPING)
C518CMXL2E104KC MYLAR250V MEU 0.1MF K
C519CCXB2H561KC CERA500V B 560PF K (TAPPING)
C521CXCH1H121JC CERA50V CH 120PF J (TAPPING)
!
LOCPART CODEPART NAMEDESCRIPTIONREMARKS
C522CCXF1H103ZC CERA50V F 0.01MF Z (TAPPING)
C523CEXF1H470VC ELECTRO50V RSS 47MF (6.3X11) TP
C524CCXF1H103ZC CERA50V F 0.01MF Z (TAPPING)
C526CCXB1H221KC CERA50V B 220PF K (TAPPING)
C527CCXF1H472ZC CERA50V F 4700PF Z (TAPPING)
C528CCXF1H472ZC CERA50V F 4700PF Z (TAPPING)
C530CCXF1H103ZC CERA50V F 0.01MF Z (TAPPING)
C531CCXF1H103ZC CERA50V F 0.01MF Z (TAPPING)
C532CEXF1C101CC ELECTRO16V RUS 100MF (6.3X11) TP
C533CEXF1C101CC ELECTRO16V RUS 100MF (6.3X11) TP
C535CXSL2H220JC CERA500V SL 22PF J(TAPPING)
C536CXCH1H100DC CERA50V CH 10PF D (TAPPING)
C537CXCH1H100DC CERA50V CH 10PF D (TAPPING)
L5005CPX829K--COIL PEAKING8.2UH K (RADIAL)
L5015CPX829K--COIL PEAKING8.2UH K (RADIAL)
L5025CPX829K--COIL PEAKING8.2UH K (RADIAL)