Sharp SX76NF8, Service Manual

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1
SX76NF8
WARNING
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power
receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user – serviceable
parts inside. Refer servicing to qualified service personnel.
SERVICE MANUAL
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
SX76NF8
SHARP CORPORATION
COLOUR TELEVISION
Chassis No. GA-20X
Page
CONTENTS
»
SPECIFICATIONS ............................................. 2
»
IMPORTANT SERVICE NOTES ........................ 2
»
ADJUSTMENT PRECAUTIONS ........................ 3
»
TROUBLE SHOOTING TABLE ......................... 8
»
WAVEFORMS .................................................. 12
»
CHASSIS LAYOUT .......................................... 14
»
BLOCK DIAGRAM ........................................... 16
»
DESCRIPTION OF SCHEMATIC DIAGRAM .. 18
»
SCHEMATIC DIAGRAM
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CRT UNIT ..................................................... 19
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MAIN UNIT ................................................... 20
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CONTROL UNIT .......................................... 26
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DF UNIT ....................................................... 28
Ë
LED UNIT ..................................................... 29
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KEY UNIT ..................................................... 29
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SUB WOOFER UNIT ................................... 30
Page
»
PRINTED WIRING BOARD ASSEMBLIES ..... 31
»
REPLACEMENT PARTS LIST
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ELECTRICAL PARTS
MAIN UNIT ................................................... 38
CRT UNIT ..................................................... 43
CONTROL UNIT .......................................... 44
DF UNIT ....................................................... 45
LED UNIT ..................................................... 45
SUB WOOFER UNIT ................................... 45
KEY UNIT ..................................................... 45
Ë
MISCELLANEOUS PARTS .......................... 46
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SUPPLIED ACCESSORIES ......................... 46
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PACKING PARTS ......................................... 46
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CABINET PARTS ......................................... 46
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CABINET PARTS LOCATION ...................... 46
»
PACKING OF THE SET ................................... 47
FEATURE
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Full Auto Channel Preset and Auto Channel Skip
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100 CH Program Memory
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CATV (Hyper Band) Ready
<Used Frequency Synthesizer Tuner>
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High Contrast Picture
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TELETEXT(10 page)
English / German / French / Spanish / Italian
/ Swedish / Dutch / portuguese
Ë
ON Timer/OFF Timer
Ë
Blue Back Noise Mute
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White Temperature Adjustment
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Child Lock
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Auto Sound Limiter
Ë
Headphone Terminal
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Stereo (NICAM / IGR) Decoder
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Rotation adjustment (picture tilt adjustment)
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Component Input Terminal
S13V5SX76NF8/