Sharp 21R2BK Service Manual

In the interests of user-safety (Required by safety regulations in some countries) the set should be re-
stored to its original condition and only parts identical to those specified should be used.
Ë Multi 18 systems
Ë Full Auto Channel Preset and Auto Channel Skip
Ë 100-CH Program Memory
Ë CATV(Hyper Band) Ready
<Used Frequency Synthesizer Tuner>
Ë AVL(Sound Keeper) Function
Ë High Contrast Picture(Black Stretch Circuit)
Ë On Timer/Sleep Timer/Reminder Timer
Ë Blue Back Noise Mute
» SPECIFICATIONS ............................................. 2
» IMPORTANT SERVICE NOTES ........................ 2
» ADJUSTMENT PRECAUTIONS ........................ 3
» MEMORY MAP ................................................ 12
» GA1 HOTEL MODE APPLICATION ................ 16
» TROUBLE SHOOTING FLOWCHART ............ 16
» CHASSIS LAYOUT .......................................... 19
» BLOCK DIAGRAM ........................................... 20
» SOLID STATE DEVICE BASE DIAGRAM ....... 23
» DESCRIPTION OF SCHEMATIC DIAGRAM .. 24
» WAVEFORMS .................................................. 24
» SCHEMATIC DIAGRAM
Ë CRT UNIT ..................................................... 25
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
MODEL
FEATURES
Ë Front AV-In & Rear AV-In/Out Terminals
Ë Colour Comb Filter(NTSC only)
Ë Headphone Terminal
Ë Hotel Mode
Ë Arabic/Chinese/English/French/Malay/
Ë White Temperature Adjustment
CONTENTS
Page
WARNING
SHARP CORPORATION
1
COLOUR TELEVISION
Chassis No. GA-1
21R2BK
(Front Priority)
5 Languages OSD
Ë HEADPHONE JACK UNIT ........................... 25
Ë MAIN UNIT ................................................... 26
» PRINTED WIRING BOARD ASSEMBLIES ..... 28
» REPLACEMENT PARTS LIST
Ë ELECTRICAL PARTS
MAIN UNIT ................................................... 33
CRT UNIT ..................................................... 36
HEADPHONE JACK UNIT ........................... 37
Ë SUPPLIED ACCESSORIES ......................... 37
Ë PACKING PARTS ......................................... 37
Ë CABINET PARTS ......................................... 38
» PACKING OF THE SET ................................... 39
21R2BK
S03J21R2BK//
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