Sharp TU-DTV1000/A Manuel utilisateur
1
TU-DTV1000/A
SERVICE MANUAL
S08Y6TU-DTV10
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
MODEL TU-DTV1000/A
CONTENTS
• SPECIFICATIONS.............................................. 2
• IMPORTANT SERVICE SAFETY NOTES..........3
• NOTE TO SERVICE PERSONNEL....................4
• OPERATION MANUAL ...................................... 5
• REMOVING OF MAJOR PARTS........................8
• TROUBLE SHOOTING TABLE ........................13
• SERVICE ADJUSTMENT................................. 17
• CHASSIS LAYOUT .......................................... 23
• BLOCK DIAGRAM ........................................... 25
• OVERALL WIRING DIAGRAM.........................27
Page Page
• DESCRIPTION OF SCHEMATIC DIAGRAM ...29
• SCHEMATIC DIAGRAM................................... 30
• PRINTED WIRING BOARD ASSEMBLIES ......83
• PARTS LIST
ËELECTRICAL PARTS ................................. 93
ËCABINET AND MECHANICAL PARTS..... 111
ËACCESSORIES PARTS ........................... 113
ËPACKING PARTS ..................................... 113
• PACKING OF THE SET ................................. 114
SHARP CORPORATION This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
ATSC DIGITAL TELEVISION SYSTEM
DTV DECODER
2
TU-DTV1000/A
Specifications
Product Type DTV Decoder
Model TU-DTV1000
Video System ATSC Digital television system
Receiving Frequency VHF : Low 54~88MHz, High 174~216MHz
UHF : 470~806MHz
Antenna Input 75Ωunbalanced
Video Output Signal
1080i(HDTV)
»5BNC Output R.G.B : 1.0Vp-p (Trilevel Sync On), 75Ω
HD, VD : 0.3Vp-p (Sync Negative), 75Ω
»Component Output Y : 1.0Vp-p (Trilevel Sync On), 75Ω
PB/PR : ±0.35Vp-p (Trilevel Sync), 75Ω
480p(VGA)
»15-pin mini D-sub R.G.B : 0.7Vp-p (Non-sync), 75Ω
HD, VD : TTL level (Negative)
480i
»Component Output Y : 1.0Vp-p (Negative Sync On), 75Ω
PB/PR : ±0.35Vp-p (Non-sync), 75Ω
»S-video Output Y : 1.0Vp-p (Negative Sync On), 75Ω
C : burst 0.286Vp-p, 75Ω
»Video Output Composite video 1Vp-p (Negative Sync on), 75Ω
Audio Output Signal
»Output Signal Output level : 2Vrms(1kHz, 0dB)
»5.1ch Output Front L/R, surround L/R, center and subwoofer
Output connector : Pin-jack
»Digital Audio I/F Optical digital output : Optical connector
»Coaxial Digital Output Pin-jack
Rated Voltage AC 120V
Rated Frequency 60Hz
Power Consumption 57W
Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperatue -20°C to 55°C (-4°F to 131°F)
Cabinet Front : Plastic
Top, Bottom : Metal
Dimensions Material 16.9" ×11.0" ×3.1" (430 ×280 ×79.5 mm)
(W ×D ×H) (Main body only)
Weight 10.4lbs (4.7kg)
Supplied Accessories Remote control unit
Two AA batteries
(For Expansion Port) Up grade port
Digital expansion port (Preparation for Future)
Specifications are subject to change without notice.
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TU-DTV1000/A
IMPORTANT SERVICE SAFETY NOTES
ËService work should be performed only by qualified service technicians who are
thoroughly familiar with all safety checks and servicing guidelines as follows:
AC
VOLTMETER
1.5k ohm (10W)
0.15µF
TEST PROBE
TO EXPOSED
METAL PARTS CONNECT TO KNOWN
EARTH GROUND
WARNING
1. For continued safety, no modification of any circuit
should be attempted.
2. Disconnect AC power before servicing.
BEFORE RETURNING THE DTV DECODER:
(Fire & Shock Hazard)
Before returning the projector to the user, perform
the following safety checks:
1. Inspect lead wires are not pinched between the
chassis and other metal parts of the DTV decoder.
2. Inspect all protective devices such as non-metallic
control knobs, insulating materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacity networks, mechanical
insulators, etc.
3. To be sure that no shock hazard exists, check for
current leakage in the following manner:
»Plug the AC cord directly into a 120-volt AC outlet,
(Do not use an isolation transformer for this test).
»Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in parallel
between all exposed metal cabinet parts and earth
ground.
»Use anAC voltmeter with sensitivity of 5000 ohm per
volt., orhigher, sensitivity tomeasure theACvoltage
drop across the resistor (See Diagram).
»All checks must be repeated with the AC plug
connection reversed. (If necessary, a non-polarized
adapter plug must be used only for the purpose of
completing these checks.)
Any reading of 0.37 volts RMS (this corresponds to
0.25milliamp.AC.)or moreisexcessive andindicates
a potential shock hazard which must be corrected
before returning the unit to the owner.
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SAFETY NOTICE
Many electrical and mechanical parts in DTV decoder have special safety-related characteristics.
These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily
increased by using replacement components rated for higher voltage, wattage, etc.
Replacement parts which have these special safety characteristics are identified in this manual; electrical components
havingsuch featuresare identified by“å”and shaded areasin theReplacement Parts Listsand SchematicDiagrams.
For continued protection, replacement parts must be identical to those used in the original circuit. The use of a
substitutereplacementparts whichdonothave thesamesafetycharacteristics asthefactoryrecommended replacement
parts shown in this service manual, may create shock, fire or other hazards.
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TU-DTV1000/A
CAUTION: TO REDUCETHE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (or BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICINGTO QUALIFIED SERVICE
PERSONNEL.
The lighting flash with arrowhead within a
triangle is intended to tell the user that
parts inside the product are risk of electric
shock to persons.
The exclamation point within a triangle is
intended to tell the user that important
operatingand servicinginstructions are in
the manual with the projector.
CAUTION
RISK OF ELECTRIC SHOCK.
DO NOT REMOVE SCREWS
EXCEPT SPECIFIED USER
SERVICE SCREW
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO
MOISTURE OR WET LOCATIONS.
CAUTION
(ATV-1 & ATV-2)
For continued protection
against a risk of fire,
replace only with same
type 1A 60V fuse.
(F5101 ···ATV-1)
(F5401 ···ATV-2)
1A 60V
CAUTION
(ATV-2) For continued protection
against a risk of fire,
replace only with same
type 2A 60V fuse.
(F5403, F5404, F5405)
2A 60V
CAUTION
(ATV-1 & ATV-2)
For continued protection
against a risk of fire,
replace only with same
type 1.6A 60V fuse.
(F5102, F5103, F5104,
F5105 ···ATV-1)
(F5402 ···ATV-2)
1.6A 60V
CAUTION
(Main Power)
For continued protection
against a risk of fire,
replace only with same
type 3A 250V fuse.
(F1)
3A 250V
CAUTION
(Sub Power)
For continued protection
against a risk of fire,
replace only with same
type 4A 125V fuse.
(F5981)
4A 125V
5
TU-DTV1000/A
CONTROL OPERATION QUICK REFERENCE
6
TU-DTV1000/A
REAR TERMINALS
7
TU-DTV1000/A
BASIC OPERATION
8
TU-DTV1000/A
REMOVING OF MAJOR PARTS
1. Removing the top cabinet
1-1. Remove the four lock screws off the right and left sides of the top cabinet.
1-2. Remove the five lock screws off the back of the top cabinet. Slide the top cabinet toward yourself and detach
it.
1-2
1-1
Top Cabinet
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TU-DTV1000/A
2. Removing the front cabinet and PWBs
2-1. Remove the three lock screws off the front cabinet. Undo the three hooks at the bottom and detach the front
cabinet.
2-2. Remove the three lock screws and take out the Operation unit PWB.
2-3. Remove the five lock screws and take out the R/C·LED unit PWB.
2-1
2-2
2-3
Front Cabinet
R/C·LED Unit
Operation Unit
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TU-DTV1000/A
3. Removing the ATV-1 and ATV-2 unit PWBs
3-1. Remove the nine lock screws off the terminals on the back.
3-1
3-2. Disconnect the connectors of the ATV-1 and ATV-2 unit PWBs.
3-3. Remove the eight lock screws off theATV-1 unit PWB. Disconnect the terminals from the bottom cabinet. Lift
and detach the ATV-1 unit PWB.
3-4. Remove the eight spacers (stud bolts). Disconnect the terminals from the bottom cabinet. Lift and detach the
ATV-2 unit PWB.
3-3
3-2
3-4
3-2
8 pcs.
ATV-1 Unit
ATV-2 Unit
Bottom Cabinet
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