1
CX51N3/N4
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.
MODELS
CX51N3
CX51N4
SHARP CORPORATION
COLOUR TELEVISION
Chassis No. GA-1
Page
CONTENTS
» SPECIFICATIONS ............................................. 2
» IMPORTANT SERVICE NOTES ........................ 2
» ADJUSTMENT PRECAUTIONS........................ 3
» MEMORY MAP ................................................ 11
» GA1 HOTEL MODE APPLICATION ................ 15
» TROUBLE SHOOTING TABLE ........................ 16
» SOLID STATE DEVICE BASE DIAGRAM .......18
» WAVEFORMS.................................................. 19
» CHASSIS LAYOUT .......................................... 20
» BLOCK DIAGRAM ........................................... 22
» DESCRIPTION OF SCHEMATIC DIAGRAM .. 26
» SCHEMATIC DIAGRAM
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CRT UNIT.....................................................27
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MAIN UNIT ................................................... 28
Page
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HEADPHONE UNIT ..................................... 32
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BURST UNIT ................................................ 33
» PRINTED WIRING BOARD ASSEMBLIES ..... 34
» REPLACEMENT PARTS LIST
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ELECTRICAL PARTS
MAIN UNIT ................................................... 40
CRT UNIT.....................................................43
HEADPHONE UNIT ..................................... 43
BURST UNIT ................................................ 44
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SUPPLIED ACCESSORIES.........................44
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PACKING PARTS......................................... 44
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CABINET PARTS ......................................... 44
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CABINET PARTS LOCATION...................... 45
» PACKING OF THE SET................................... 46
FEATURE
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PAL B/G
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NTSC(AV Thru)
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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
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AVL (Sound Keeper) Function
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High Contrast Picture (Black Stretch Circuit)
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ON Timer/Sleep Timer/Reminder Timer
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Blue Back Noise Mute
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Front AV In and Rear AV In/Out Terminals (Front AV
Priority)
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Colour-Comb Filter (NTSC AV In)
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Hotel Mode
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Front Headphone Jack
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Multi Laguage OSD (English/Chinese/French/
Arabic/Malay/Russian)
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White Temperature Adjustment
CX51N4CX51N3
S02S8CX51N3//
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