1
21YF30
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
21YF30
SHARP CORPORATION
COLOUR TELEVISION
Chassis No. GA-2
Page
»
SPECIFICATIONS ............................................. 2
»
IMPORTANT SERVICE NOTES ........................ 2
»
ADJUSTMENT PRECAUTIONS ........................ 3
»
MEMORY MAP ................................................ 14
»
TROUBLE SHOOTING TABLE ....................... 30
»
SOLID STATE DEVICE BASE DIAGRAM ....... 32
»
WAVEFORMS .................................................. 34
»
CHASSIS LAYOUT .......................................... 35
»
BLOCK DIAGRAM ........................................... 36
»
DESCRIPTION OF SCHEMATIC DIAGRAM .. 40
»
SCHEMATIC DIAGRAM
Ë
CRT UNIT ..................................................... 41
Page
Ë
HEADPHONE UNIT ..................................... 41
Ë
MAIN UNIT ................................................... 42
Ë
S-CONTROL UNIT ....................................... 44
»
PRINTED WIRING BOARD ASSEMBLIES ..... 45
»
REPLACEMENT PARTS LIST
Ë
ELECTRICAL PARTS .................................. 51
Ë
MISCELLANECOUS PARTS ....................... 56
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SUPPLIED ACCESSORIES ......................... 56
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PACKING PARTS ......................................... 56
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CABINET PARTS ......................................... 57
»
PACKING OF THE SET ................................... 58
FEATURE
Ë
PAL B/G
Ë
NTSC (AV THRU)
Ë
Full Auto Channel Preset and Auto Channel Skip
Ë
100-CH Program Memory
Ë
CATV(Hyper Band) Ready <Used Frequency Synthesizer
Tuner>
Ë
Black Stretch Circuit
Ë
On Timer/Sleep Timer/Reminder Timer
Ë
Blue Back Noise Mute
Ë
Front AV IN & Rear AV IN/OUT Terminals
Ë
Favourite Channel
Ë
Front Headphone Jack
Ë
Colour Comb Filter (AV IN)
Ë
High Contrast Picture
Ë
Hotel Mode
Ë
English/Thai Language OSD
Ë
Mono Bilingual
Ë
White Temperature Adjustment
Ë
Component In
Ë
Surround Sound Effect(With Bass/Treble/Balance)
Ë
AV Stereo
CONTENTS
S43A221YF30//
Summary of Contents for 21YF30
Page 32: ...21YF30 32 SOLID STATE DEVICE BASE DIAGRAM TOP VIEW SIDE VIEW ...
Page 33: ...33 21YF30 M E M O ...
Page 34: ...34 21YF30 WAVEFORMS ...
Page 35: ...35 21YF30 CHASSIS LAYOUT ...
Page 36: ...36 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J BLOCK DIAGRAM PWB A MAIN BLOCK ...
Page 37: ...37 21YF30 10 11 12 13 14 15 16 17 18 19 ...
Page 39: ...39 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J PWB E S CONTROL BLOCK ...
Page 42: ...42 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J SCHEMATIC DIAGRAM MAIN Unit ...
Page 43: ...43 21YF30 10 11 12 13 14 15 16 17 18 19 ...
Page 44: ...44 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J SCHEMATIC DIAGRAM S CONTROL Unit ...
Page 46: ...46 21YF30 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J PWB A MAIN Unit Component Side ...
Page 47: ...47 21YF30 10 11 12 13 14 15 16 17 18 19 ...
Page 58: ...Ref No Part No Description Code Ref No Part No Description Code 58 21YF30 PACKING OF THE SET ...
Page 59: ...Ref No Part No Description Code Ref No Part No Description Code 59 21YF30 ...