Sharp 21N52-E1 - User Manual

SHARP
SERVICE MANUAL
S90M621 N52E11
21 SYSTEM
COLOUR TELEVISION
Chassis No. 2IA- M
MODEL
21N52-E1
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.
ELECTRICAL SPECIFICATIONS
Power Input
................................ 110-240VAC
50/60Hz (Auto)
Power Consumption
................................. 107w
Convergence
..................
Self Converging System
Focus
......
Bi-Potential, Uni-Potential Electrostatic
Sweep Deflection ................................
Magnetic
Intermediate Frequencies
Picture IF Carrier
................................
38.9M Hz
Sound IF Carrier
6.5MHz .........................................
32.4MHz
6.0MHz .........................................
. 32.9MHz
5.5MHz .........................................
. 33.4MHz
4.5MHz .........................................
.
34.4MHz
Colour Sub-Carrier
PAL/NTSC
.....................................
34.47M Hz
SECAM ............................
34.494/34.65MHz
NTSC
............................................
35.32MHz
Audio Power Output Rating
........
2.5W x 2 (Max.)
Speaker
Size .............................
.
8cm x 4cm Oval x 2 pcs
Voice Coil Impedance
.............
8 ohms at 400 Hz
Specifications are subject to change without prior
notice.
Aerial Input Impedance ,......, 75 ohm Unbalanced
Receiving Channels
PAL-B/G, SECAM-B/G
VHF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
E2 thru
El2
UHF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 thru 69
CATV
.......................,...............
S1 thru S3,
M1 thru M10
U1 thru U10
PAL-D/K, SECAM-D/K
VHF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R1 thru R12
UHF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 thru 69
PAL-l
VHF
. . . . . . . . . . . . . . . . . . . . .
(IRELAND):
B thru J
UHF ..................
(U.K., H.K.): 21 thru 69
NTSC-M
VHF . . . . . . . . . . . . . . . . . . . . . . . . . . .
(US):
2 thru 13
(JAPAN): 1 thru 12
UHF . . . . . . . . . . . . . . . . . . . . . . . . . . .
(US): 14 thru 83
(JAPAN): 13 thru 62
CATV
....................................
A-6 thru A-1,
A thru W,
AA
Receiving Frequency
VHF
. . . . . . . . . . . . . . . . . . . . . . . . .
48.25 thru 301.25 MHz
UHF . . . . . . . . . . . . . . . . . . . . . . . . . 471.25 thru 885.25 MHz
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 -
qualified service personnel.
serviceable parts inside. Refer servicing to
SHARP CORPORATION

Summary

ELECTRICAL SPECIFICATIONS

IMPORTANT SERVICE NOTES

SERVICING HIGH VOLTAGE SYSTEMS AND PICTURE TUBES

Procedures for safely servicing high voltage systems and picture tubes.

X-RAY SAFETY PRECAUTIONS

Precautions regarding X-ray radiation during servicing.

PRE-RETURN SAFETY CHECKS

Safety checks to perform before returning the unit to the user.

PIF, AFT, SIF, AGC ADJUSTMENT PROCEDURES

PIF, AFT, SIF, AGC ADJUSTMENT (CONTINUED)

VIDEO CIRCUIT ADJUSTMENT PROCEDURES

CRT CUT-OFF ADJUSTMENT

Adjustment of CRT cut-off parameters.

WHITE BALANCE AND BACKGROUND ADJUSTMENT

Adjusting white balance and background settings.

CHROMA CIRCUIT ADJUSTMENT PAL

PAL CHROMA ADJUSTMENT

Adjustment of PAL chroma parameters.

CHROMA CIRCUIT ADJUSTMENT SECAM

CHROMA CIRCUIT ADJUSTMENT NTSC

DEFLECTION LOOP ADJUSTMENTS

FOCUS ADJUSTMENT

Adjustment of focus for the CRT.

PURITY ADJUSTMENT PROCEDURE

PURITY ADJUSTMENT

Procedure for adjusting the purity of the CRT display.

CONVERGENCE ADJUSTMENT PROCEDURES

STATIC CONVERGENCE ADJUSTMENT

Static convergence adjustment using magnets.

DYNAMIC CONVERGENCE ADJUSTMENT

Dynamic convergence adjustment using wedges.

TROUBLESHOOTING TABLE

NO RASTER TROUBLESHOOTING

Troubleshooting steps for a "No Raster" condition.

TROUBLESHOOTING: NO PICTURE, NO SOUND

NO PICTURE, NO SOUND DIAGNOSIS

Troubleshooting steps for no picture and no sound.

TROUBLESHOOTING: NO SPECIFIC COLOUR (PAL)

NO SPECIFIC COLOUR (PAL) DIAGNOSIS

Troubleshooting steps for no specific colour in PAL reception.

TROUBLESHOOTING: NO SPECIFIC COLOUR (SECAM)

NO SPECIFIC COLOUR (SECAM) DIAGNOSIS

Troubleshooting steps for no specific colour in SECAM reception.

TROUBLESHOOTING: NO SPECIFIC COLOUR (NTSC)

NO SPECIFIC COLOUR (NTSC) DIAGNOSIS

Troubleshooting steps for no specific colour in NTSC reception.

SCHEMATIC DIAGRAM DESCRIPTION

SAFETY NOTES AND PRECAUTIONS

Safety precautions to be observed during servicing.

WAVEFORM REFERENCE CHARTS

WAVEFORM REFERENCE CHARTS

Illustrations of expected waveforms for various adjustments.

PARTS LIST AND REPLACEMENT INFORMATION

PARTS REPLACEMENT GUIDELINES

Information on replacing parts with specified components.

PARTS LIST: COMPONENTS (GROUP 1)

TRANSISTORS AND DIODES LIST

PARTS LIST: COMPONENTS (GROUP 2)

COILS, FILTERS, DELAY LINES, TRANSFORMERS

CAPACITORS AND CONTROLS LIST

PARTS LIST: COMPONENTS (GROUP 3)

TRANSISTORS, RESISTORS, SWITCHES, DIODES

PARTS LIST: COMPONENTS (GROUP 4)

CAPACITORS AND RESISTORS LIST

PARTS LIST: COMPONENTS (GROUP 5)

TRANSISTORS, DIODES, TRANSFORMER LIST

CAPACITORS LIST

PARTS LIST: COMPONENTS (GROUP 6)

PARTS LIST: COMPONENTS (GROUP 7)

Sharp 21N52-E1 Specifications

General

Brand	Sharp
Model	21N52-E1
Category	TV
Language	English