Sharp 21S-FX10L

SERVICE MANUAL
COLOUR TELEVISION
Chassis No. GA6
21S-FX10L
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 indentical to those specified should be used.
S2912521SFX10L
MODEL
ELECTRICAL SPECIFICATIONS
Chassis No. GA8S
CONTENTS
IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................................... 1-1
Page
LOCATION OF USER’S CONTROL ...................................................................................................................... 2-1
INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................................. 3-1
SERVICE MODE ..................................................................................................................................................... 4-1
ADJUSTMENT METHOD ........................................................................................................................................ 5-1
WAVEFORMS ......................................................................................................................................................... 6-1
CHASSIS LAYOUT ................................................................................................................................................. 7-1
BLOCK DIAGRAM .................................................................................................................................................. 8-1
DESCRIPTION OF SCHEMATIC DIAGRAM .......................................................................................................... 9-1
SCHEMATIC DIAGRAMS ......................................................................................................................................10-1
PRINTED WIRING BOARD ASSEMBLIES ........................................................................................................... 11-1
Parts Guide
POWER INPUT............................AC 110-220 V, 50/60 Hz
POWER RATING .....................................................92W
PICTURE SIZE .............................1,239 cm
2
(192sq inch)
CONVERGENCE ............................................. Magnetic
SWEEP DEFLECTION .................................. .. Magnetic
FOCUS ......................................................... Electrostatic
INTERMEDIATE FREQUENCIES
Picture IF Carrier Frequency ...................... 45.75 MHz
Sound IF Carrier Frequency ...................... 41.25 MHz
Color Sub-Carrier Frequency ......................42.17 MHz
(Nominal)
AUDIO POWER
OUTPUT RATING... ...................... 3.0 W(RMS) x 4pcs
SPEAKER
SIZE ........................................................ 9 x 5cm, 4pcs
VOICE COIL IMPEDANCE .................32 ohm at 400 Hz
ANTENNA INPUT IMPEDANCE
VHF/UHF ........................................75 ohm Unbalanced
TUNING RANGES
VHF-Channels ................................................. 2 thru 13
UHF-Channels ................................................14 thru 69
CATV Channels ............................................. 1 thru 125
(EIA, Channel Plan U.S.A.)
Specifications are subject to change without
prior notice.
SHARP CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
21S-FX10L
1st Edition

Sharp 21S-FX10L Specifications

General

Brand	Sharp
Model	21S-FX10L
Category	TV
Language	English

Summary

IMPORTANT SERVICE SAFETY PRECAUTION

SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE

Procedures for safely servicing the high voltage system and picture tube.

X-RADIATION AND HIGH VOLTAGE LIMITS

Guidelines and precautions regarding X-radiation and high voltage levels during service.

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

Final safety checks before returning the TV set to the user.

INSTALLATION AND SERVICE INSTRUCTIONS

X-RADIATION PROTECTOR CIRCUIT TEST

Procedure to test the X-radiation protector circuit for proper operation after service.

HIGH VOLTAGE CHECK

Instructions for verifying the high voltage output and its regulation.

SERVICE MODE

SERVICE MODE OPERATION

How to enter, exit, and navigate the different modes within the service menu.

SERVICE MODE FUNCTIONS AND PROHIBITIONS

Details on which functions are active, prohibited, or reset during service mode operation.

ADJUSTMENT METHOD

BUS SET UP SERVICE DATA (1 ST & 2 ND STAGE)

Service data adjustments for initial setup and second stage calibration.

OPTION SET UP SERVICE DATA (3 RD STAGE)

PIF ADJUSTMENT CHECKING

FOCUS ADJUSTMENT

Procedure to adjust the picture tube's focus for optimal clarity.

H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT

Key adjustments for horizontal, IF VCO, and S-trap frequency stabilization.

HORIZONTAL, VERTICAL, DEFLECTION LOOP ADJUSTMENT (1)

V-SHIFT AND V-SIZE ADJUSTMENT

V-LINEARITY AND VS CORRECTION ADJUSTMENT

H-SHIFT AND H-SIZE ADJUSTMENT

PARABOLA ADJUSTMENT

HORIZONTAL, VERTICAL, DEFLECTION LOOP ADJUSTMENT (2)

CORNER AND BOWANGLE ADJUSTMENTS

TRAPEZIUM AND FINAL INSPECTION

SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST ADJUSTMENT(1)

SCREEN AND WHITE BALANCE ADJUSTMENT

SUB-BRIGHTNESS AND SUB-CONTRAST ADJUSTMENT

BEAM CURRENT CHECK

NTSC CHROMA ADJUSTMENT

SUB-TINT AND SUB COLOR ADJUSTMENT

MS LEVEL ADJUSTMENT

MS LEVEL ADJUSTMENT PROCEDURE

PROTECTOR OPERATION CHECKING

H, V PROTECTOR AND OTHER PROTECTOR CHECKS

Verifying the operation of horizontal, vertical, and other protective circuits.

SHOCK TEST CHECKING.

SHOCK TEST PROCEDURE

Performing a physical shock test to ensure TV integrity and operation.

WAVEFORMS

CHASSIS LAYOUT

BLOCK DIAGRAM

SCHEMATIC DIAGRAM

PARTS GUIDE