SERVICE MANUAL
COLOUR TELEVISION
Chassis No. GB-4
MODEL
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.
FEATURES
World Multi 28 SystemRear AV-IN 1 & 2, S-Video In, AV Output (Monitor Out),nn
Headphone and Front AV-IN 3
100-CH Program Memoryn
AV Mode (Standard/Dynamic/Soft)nAV Stereo (With mono bilingual)n
CATV Hyper Band ReadyAFTnn
4Line Digital Comb FilterComponent Input Terminalnn
Velocity ModulationChild Locknn
Blue/Black Stretch CircuitGraphic Equalizernn
Picture Noise ReductionClocknn
White Temp. SelectSound Mode (Music/Movie/News/Custom)nn
Aperture ControlHotel modenn
Gamma correction16 : 9 Modenn
Multi Language OSD (English/Thai)n
On/Off/Reminder Timer (with beep sound)n
CONTENTS
PagePage
SPECIFICATIONS...........................................2nMAIN UNIT...............................................27
IMPORTANT SERVICE NOTES......................2nFRONT UNIT............................................29
ADJUSTMENT PRECAUTIONS.....................3PRINTED WIRING BOARD ASSEMBLIES...31
TROUBLE SHOOTING FLOWCHART..........16REPLACEMENT PARTS LIST
SOLID STATE DEVICE BASE DIAGRAM.....20nELECTRICAL PARTS...............................38
WAVEFORMS...............................................21nSUPPLIED ACCESSORIES.....................45
CHASSIS LAYOUT........................................22nPACKING PARTS.....................................45
BLOCK DIAGRAMS......................................23nCABINET PARTS.....................................45
DESCRIPTION OF SCHEMATIC DIAGRAM..25PACKING OF THE SET................................46
SCHEMATIC DIAGRAM
nCRT UNIT.................................................26
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.
SHARP MENUFACTURING (THAILAND) CO.,LTD.
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