1
WA R NING
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 interes ts of us er-s afety (R equired by s afety regulations in s ome countries ) the s et s hould be res tored
to its original condition and only parts identical to thos e s pecified s hould be us ed.
MODE L S
COLOUR TELEVISION
Chassis No. GA-7S
FEATURES
Multi 21 Systems, 100-CH program Memory
Full Auto Search System
NICAM/A2 STEREO
Blueback Function with Auto OFF
NTSC Colour Comb Filter Function
High Contrast Picture (Black Strecth Circuit)
CATV (Hyperband) Ready
White Temperature Select
SURROUND & AVL Function
OFF Timer & Child Lock
Hotel Mode & AV Mode (Movie/Music/News)
English Language OSD
S HAR P C OR P OR AT ION
Page
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SPECIFICATIONS ............................................. 2
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IMPORTANT SERVICE NOTES ........................ 2
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ADJUSTMENT PRECAUTIONS ........................ 3
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TROUBLE SHOOTING TABLE ....................... 14
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WAVEFORMS .................................................. 16
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SOLID STATE DEVICE BASE DIAGRAM ....... 17
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CHASSIS LAYOUT .......................................... 18
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BLOCK DIAGRAM ........................................... 19
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DESCRIPTION OF SCHEMATIC DIAGRAM .. 22
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SCHEMATIC DIAGRAM
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CRT UNIT ..................................................... 23
Page
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MAIN UNIT ................................................... 24
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REPLACEMENT PARTS LIST
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ELECTRICAL PARTS .................................. 26
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MISCELLANECOUS PARTS ....................... 30
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SUPPLIED ACCESSORIES......................... 30
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PACKING PARTS ......................................... 30
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CABINET PARTS ......................................... 30
CONTENTS
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21AXS500
Rear AV-IN/Out Terminal & Component In
Front AV-In Terminal & Sub-Woofer Output
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Sound Booter (Shakit)
LNASI (Antenna Booter)
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Summary of Contents for 21AXS500
Page 17: ...17 S OLID S TATE DE VICE B AS E DIAGR AM ...
Page 18: ...18 ...
Page 19: ...19 B LOCK DIAGR AM CR T UNIT S HAK IT UNIT ...
Page 20: ...21 20 B LOCK DIAGR AM MAIN UNIT ...
Page 22: ...23 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J SCHEMATIC DIAGR AM CR T UNIT ...
Page 24: ...26 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J SCHEMATIC DIAGR AM SHAK IT UNIT ...