Sharp 14EM4RU, Service Manual

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14EM4RU
21EM4RU
1
14EM4RU
21EM4RU
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 re-
stored to its original condition and only parts identical to those specified should be used.
MODELS
SHARP CORPORATION
COLOUR TELEVISION
Chassis No. GA-1A
FEATURES
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
Black Stretch Circuit
Ë
On Timer/Off Timer/Reminder Timer
Ë
Blue Back Noise Mute
Ë
Front Headphone Terminal
Ë
Front AV-In & Rear AV-In/Out Terminals
(Front Priority)
Ë
Colour Comb Filter(NTSC AV-THRU only)
Ë
High Contrast Picture
Ë
Hotel Mode
Ë
English/Russian 2 Languages OSD
Ë
White Temperature Adjustment
14EM4RU 21EM4RU
Page
CONTENTS
Page
»
SPECIFICATIONS ............................................. 2
»
IMPORTANT SERVICE NOTES ........................ 2
»
ADJUSTMENT PRECAUTIONS ........................ 3
»
MEMORY MAP ................................................ 11
»
GA1 HOTEL MODE APPLICATION ................ 15
»
TROUBLE SHOOTING TABLE ........................ 15
»
WAVEFORMS .................................................. 18
»
SOLID STATE DEVICE BASE DIAGRAM ....... 20
»
CHASSIS LAYOUT .......................................... 21
»
BLOCK DIAGRAM ........................................... 23
»
DESCRIPTION OF SCHEMATIC DIAGRAM .. 29
»
SCHEMATIC DIAGRAM
Ë
MAIN UNIT ................................................... 30
Ë
CRT UNIT ..................................................... 34
Ë
HEAD PHONE UNIT .................................... 35
»
PRINTED WIRING BOARD ASSEMBLIES ..... 36
»
REPLACEMENT PARTS LIST
Ë
ELECTRICAL PARTS
MAIN UNIT ................................................... 41
CRT UNIT ..................................................... 45
HEAD PHONE UNIT .................................... 45
Ë
MISCELLANEOUS PARTS .......................... 46
Ë
SUPPLIED ACCESSORIES ......................... 46
Ë
PACKING PARTS ......................................... 46
Ë
CABINET PARTS ......................................... 46
»
PACKING OF THE SET ................................... 47
S53C214EM4RU/