Service manual

ManualsBrandsSharp ManualsTV35UF6

SHARP CORPORATION

This document has been published to be used for after

sales service only.

The contents are subject to change without notice.

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.

COLOR TELEVISION

Chassis No. GB-3U'

Page

» ELECTRICAL SPECIFICATIONS ......................................................................................................... 1

» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2

» LOCATION OF USER'S CONTROL .....................................................................................................4

» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................ 5

» SERVICE ADJUSTMENT .....................................................................................................................9

» CHASSIS LAYOUT ............................................................................................................................. 12

» BLOCK DIAGRAM ..............................................................................................................................13

» DESCRIPTION OF SCHEMATIC DIAGRAM & WAVEFORMS .......................................................... 14

» SCHEMATIC DIAGRAMS ................................................................................................................... 15

» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 24

» REPLACEMENT PARTS LIST ............................................................................................................28

» PACKING OF THE SET ......................................................................................................................38

SPEAKER

SIZE ........................................................ 12 x 6 cm oval (2 pcs.)

VOICE COIL IMPEDANCE ............................... 8 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.)

POWER INPUT ..................................................... 120V AC, 60 Hz

POWER RATING .................................................................. 170W

PICTURE SIZE ..................................... 3,794 cm

(588.07sq inch)

CONVERGENCE ............................................................. Magnetic

SWEEP DEFLECTION .................................................... Magnetic

FOCUS ............................................... Hi-Bi-Potential 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 .............. 5.0W + 5.0W (at 10% distortion and

Dual CH Operate)

Specifications are subject to change without

prior notice.

ELECTRICAL SPECIFICATIONS

MODEL

SERVICE MANUAL

35UF6

CONTENTS

35UF6

Summary of content (39 pages)

PAGE 1
35UF6 SERVICE MANUAL COLOR TELEVISION Chassis No. GB-3U' MODEL 35UF6 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. CONTENTS Page » ELECTRICAL SPECIFICATIONS ......................................................................................................... 1 » IMPORTANT SERVICE SAFETY PRECAUTION ....................................................
PAGE 2
35UF6 IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING X-RADIATION AND HIGH VOLTAGE LIMITS 1. For continued safety, no modification of any circuit should be attempted. 2. Disconnect AC power before servicing. 3. Semiconductor heat sinks are potential shock hazards when the chassis is operating. 4.
PAGE 3
5UF6 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard) Before returning the receiver to the user, perform the following safety checks. 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the receiver. 2.
PAGE 4
35UF6 LOCATION OF USER'S CONTROL L Location of Controls Front Panel POWER Press → On. Press again → Off. POWER MENU – VOL + VIDEO/AUDIO IN 2 TERMINALS (INSIDE DOOR) CH PULL-OPEN POWER MENU SENSOR AREA FOR REMOTE CONTROL MENU Press → Accesses MAIN MENU. Press again → Exits MAIN MENU. – VOL + CH VOLUME UP/DOWN (+) Increases sound. (–) Decreases sound. CHANNEL UP/DOWN (8) Selects next higher channel. (9) Selects next lower channel. • Press both at the same time to access the MAIN MENU screen.
PAGE 5
35UF6 INSTALLATION AND SERVICE INSTRUCTIONS Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic screwdrivers or TV alignment tools. (2) Before performing adjustments, the TV set must be on at least 15 minutes. CIRCUIT PROTECTION HIGH VOLTAGE CHECK The receiver is protected by a 4.0A fuse (F701), mounted on PWB-A, wired into one side of the AC line input.
PAGE 6
35UF6 For adjustments of this model, the bus data is converted to various analog signals by the D/A converter circuit. Note: There are still a few analog adjustments in this series such as focus and master screen voltage. Follow the steps below whenever the service adjustment is required. See "Table-B" to determine, if service adjustments are required. 1. Service mode Before putting unit into the service mode, check that customer adjustments are in the normal mode.
PAGE 7
35UF6 A.
PAGE 8
35UF6 B. SPECIAL SETTING SERVICE NUMBER EX1 EX2 EX3 EX4 EX5 EX6 EX7 EX8 DATA ADJUSTMENT ITEM RANGE FAO VOLUME CC-POSITION INT A-ATT TUNER data Think chip-Slice LEVEL RLY DELAY TIME ADG ON TIME NOTES INITIAL VALUE 0-50 (00h-32h) 0-127 (00h-7Fh) 0-255 (00h-FFh) 0-127 (00h-7Fh) 0-3 (00h-03h) 0-255 (00h-FFh) 0-255 (00h-FFh) 0-255 (00h-FFh) 36 (24h) 27 (1Bh) 122 (7Ah) 90 (5Ah) 0 (00h) 54 (36h) 0 (00h) 10 (0Ah) Interrupt period adjustment.
PAGE 9
35UF6 Holding down both the VOL-up and CH-up buttons on the TV set at service mode for more than 2 seconds will automatically write the above initial values into IC2101. PART REPLACED IC2001 ADJUSTMENT NECESSARY UNNECESSARY X NOTES Data is stored in IC2101. The adjustment is needed to compensate for characteristics of parts including IC201 and MTS level (M01).
PAGE 10
35UF6 Note: Aging for 10 min before adjustment. After the adjustment of V-center and V-size, readjustment for this V-line. Sub-Tint Adjustment 1. Receive the half color bar signal. • RF INPUT (TU51) 2. Get into Y-Mute by R/C, or by setting the "V11" bus data to "01". 3. Vary the "V02" bus data until the waveform becomes as stated below. LEVEL B-AMP Base waveform in step (TP47B) Vertical Phase Adjustment (SCREEN FORMAT 4:3) 1. Enter the service mode and input data of “00h” on "D01". 2.
PAGE 11
35UF6 Ë MTS ADJUSTMENT MTS Level Adjustment 1. Set the sound volume above 1. Monoral signal: 400Hz, 100% modulation 2. Confirm "EX4" data is "5Ah". 3. Vary the "M01" bus data until the voltage to pin (39) of IC3001 to become the value as stated below. SETTING VOLTAGE ADJ spec : 490±10mVrms CHK spec: 490±20mVrms MTS VCO Adjustment 1. Keep the unit in no-signal state. 2. Connect the frequency counter to pin (39) of IC3001. 3. Connect a capacitor (100µF, 50V) in between positive(+) side of C3005 and ground.
PAGE 12
35UF6 CHASSIS LAYOUT H G F E D C B A 1 2 3 4 12 5 6
PAGE 13
35UF6 BLOCK DIAGRAM H G F E D C B A 1 2 3 4 13 5 6
PAGE 14
35UF6 DESCRIPTION OF SCHEMATIC DIAGRAM NOTES: 1. The unit of resistance "ohm" is omitted. (K=kΩ=1000Ω, M=MΩ) 2. All resistors are 1/16 watt, unless otherwise noted. 3. All capacitors are µ F, unless otherwise noted. (P=pF=µµF) 4. (G) indicates ±2% tolerance may be used. 5. indicates line isolated ground. VOLTAGE MEASUREMENT CONDITIONS: 1.
PAGE 15
35UF6 SCHEMATIC DIAGRAM: CRT Unit H G (DUNTKA527WEE2) VB89AJZ90X+1E F QEARCA009WJZZ E 708 7001GEFWY D C B A 1 2 3 4 15 5 6
PAGE 16
35UF6 SCHEMATIC DIAGRAM: MAIN-1 Unit H G F E D C C782 1000P D710 D706 1SS133++ EX0650GE R714 3.
PAGE 17
35UF6 ISS119 10 11 12 13 ISS119 14 15 17 16 17 18 19
PAGE 18
35UF6 SCHEMATIC DIAGRAM: MAIN-2 Unit H G F E D C B A 1 2 3 4 6 5 18 7 8 9 10
PAGE 19
35UF6 10 11 12 13 14 15 19 16 17 18 19
PAGE 20
35UF6 SCHEMATIC DIAGRAM: 3-LINE Y/C Unit H G F E D C B A 1 2 3 4 6 5 20 7 8 9 10
PAGE 21
35UF6 10 11 12 13 14 15 21 16 17 18 19
PAGE 22
35UF6 SCHEMATIC DIAGRAM: MODULE D/F Unit H G F E D C B A 1 2 3 4 6 5 22 7 8 9 10
PAGE 23
35UF6 ZA022WJZZ ZA023WJZZ 10 11 12 13 14 15 23 16 17 18 19
PAGE 24
35UF6 PRINTED WIRING BOARD ASSEMBLIES H G F E D C B A PWB-A: MAIN Unit (Components Side) 1 2 3 4 24 5 6
PAGE 25
35UF6 H G F E D C B A PWB-A: MAIN Unit (Chip Parts Side) 1 2 3 4 25 5 6
PAGE 26
35UF6 H G F E D PWB-B: CRT Unit (Wiring Side) C B A PWB-C: 3-LINE Y/C Unit (Wiring Side) 1 2 PWB-C: 3-LINE Y/C Unit (Chip Parts Side) 3 4 26 5 6
PAGE 27
35UF6 H G F PWB-H: DF MODULE Unit (Wiring Side) E D C B A 1 2 3 4 27 5 6
PAGE 28
35UF6 « Ref. No. Part No. PARTS LIST MAIN UNIT TUNER NOTE:THE PARTS HERE SHOWN ARE SUPPLIED AS AN ASSEMBLY BUT NOT INDEPENDETLY Replacement parts which have these special safety characteristics identified in this manual; electrical components having such features are identified by å and shaded areas in the Replacement Parts Lists and Schematic Diagrams.
PAGE 29
35UF6 « Description Ref. No. Part No.
PAGE 30
35UF6 « Description Ref. No. Part No. Code PWB-A: DUNTKC290WED5 MAIN UNIT CAPACITORS [EL.··· Electrolytic, M-Poly.
PAGE 31
35UF6 « Description Ref. No. Part No. Code PWB-A: DUNTKC290WED5 MAIN UNIT CAPACITORS [EL.··· Electrolytic, M-Poly.
PAGE 32
35UF6 « Description Ref. No. Part No. Code PWB-A: DUNTKC290WED5 MAIN UNIT RESISTORS [M-Ox.
PAGE 33
35UF6 « Description Ref. No. Part No. Code Ref. No. Part No.
PAGE 34
35UF6 Ref. No. « Part No. Description Code PWB-A: DUNTKC290WED5 U U INTEGRATED CIRCUITS R2606 R3001 R3002 R3003 R3004 R3005 R3007 R3008 R3010 R3017 R3018 R3019 R3024 VRS-CY1JF000JY VRS-CY1JF221JY VRS-CY1JF221JY VRS-CY1JF105JY VRS-CY1JF104JY VRS-CY1JF623JY VRS-CY1JF332JY VRS-CY1JF302JY VRS-CY1JF392JY VRS-CY1JF102JY VRS-CY1JF102JY VRS-CY1JF101JY VRD-RA2BE102JY X X X X X X X X X X X X X 00 220 220 1M 100k 62k 3.3k 3k 3.
PAGE 35
UF6 Ref. No. « Description Part No. Code PWB-B: DUNTKA527WEE2 CRT UNIT RESISTORS [M-Ox.
PAGE 36
35UF6 Ref. No. « Description Part No. Code Ref. No. Part No.
PAGE 37
35UF6 Ref. No. Part No. « Description Ref. No.
PAGE 38
35UF6 PACKING OF THE SET ★ Polyethylene Bag Operation Manual Infrared R/C Unit ★ Batteries ★ Polyethylene Sheet ★Buffer Material FRONT ★ Packing Case Use tape to fix the top side of packing case. REAR Use 12 staples to fix the bottom side of packing case. ★ MARK : Not replacement items.
PAGE 39
35UF6 COPYRIGHT © 2004 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. QRC0023-U June. 2004 Modify : SEMEX Design and Production Information Design base : JAPAN Production : SEMEX JB SHARP ELECTRONICA MEXICO S. A. DE C. V. Quality & Reliability Control Center Blvd. SHARP No.