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Sharp 21AXS500 Service Manual

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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 origina l condition a nd only pa rts identica l to thos e s pecified s hould be us ed.
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Multi 21 Systems, 100-CH program Memory
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Full Auto Search System
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NICAM/A2 STEREO
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CATV (Hyperband) Ready
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NTSC Colour Comb Filter Function
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High Contrast Picture (Black Strecth Circuit)
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White Temperature Select
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English Language OSD
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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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CHASSIS LAYOUT .......................................... 18
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BLOCK DIAGRAM ........................................... 19
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¨ CRT UNIT ..................................................... 23
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
FEATURES
CONTENTS
Page
WA R NING
S HA R P C OR P OR A T ION
1
COLOUR TELEVISION
Chassis No. GA-7S
21AXS500
MODE L S
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Blueback Function with Auto OFF
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OFF Timer & Child Lock
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Hotel Mode & AV Mode (Movie/Music/News)
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SURROUND & AVL Function
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Rear AV-IN/Out Terminal & Component In
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Front AV-In Terminal & Sub-Woofer Output
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Sound Booter (Shakit)
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LNASI (Antenna Booter)
¨ MAIN UNIT ................................................... 24
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REPLACEMENT PARTS LIST
¨ ELECTRICAL PARTS .................................. 26
¨ MISCELLANECOUS PARTS ....................... 30
¨ SUPPLIED ACCESSORIES......................... 30
¨ PACKING PARTS ......................................... 30
¨ CABINET PARTS ......................................... 30
Page

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Summary of Contents for Sharp 21AXS500

  • Page 1: Table Of Contents

    SERVICE MANUAL COLOUR TELEVISION Chassis No. GA-7S 21AXS500 MODE L S 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 origina l condition a nd only pa rts identica l to thos e s pecified s hould be us ed.

  • Page 16: Waveforms

    WAV E F OR MS (1) 1.9 Vp-p (H) (2) 2.34 Vp-p (H) (3) 2.09 Vp-p (H) (4) 2.44 Vp-p (H) (6) 5.99 Vp-p (H) (6) 0.944 Vp-p (V) (5) 4.43 Vp-p (H) (8) 3.97 Vp-p (H) (9) 42.1 Vp-p (H) (10) 1.102 KVp-p (H) (11) 64.9 Vp-p (V) (12) 1.94 Vp-p (V)

  • Page 17: Solid State Device Base Diagram

    S OL ID S TAT E DE V IC E B A S E DIA G R A M...

  • Page 19: Block Diagram

    B L OC K DIA G R A M C R T UNIT S HA K IT UNIT...
  • Page 20 B L OC K DIA G R A M MA IN UNIT...

  • Page 21: Description Of Schematic Diagram

    DESCRIPTION OF SCHEMATIC DIAGRAM NOTES: SAFETY NOTES: 1. The unit of resistance "ohm" is omitted. 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE (K = 1000 ohms, M = Mega ohm). REPLACING PARTS. 2. All resistors are 1/16 watt, unless otherwise noted. 2.

  • Page 22: Schematic Diagram ¨ Crt Unit

    S C HE MATIC DIAG R AM: C R T UNIT...

  • Page 23: Main Unit

    SCHEMATIC DIAGRAM: MAIN UNIT...
  • Page 24 S C HE MATIC DIAG R AM: S HAK IT UNIT...