Table of Contents
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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.
Ë NTSC (AV thru)
Ë Full Auto Channel Preset and Auto Channel Skip
Ë 100 CH Program Memory
Ë CATV (Hyper Band) Ready
〈Use Frequency Synthesizer Tuner〉
Ë AVL (Sound Keeper) Function
Ë High Contrast Picture (Black Stretch Circuit)
Ë ON Timer/Sleep Timer/Reminder Timer
» SPECIFICATIONS ............................................. 2
» IMPORTANT SERVICE NOTES ........................ 2
» ADJUSTMENT PRECAUTIONS ........................ 3
» UA1 HOTEL MODE APPLICATION ................. 15
» TROUBLE SHOOTING TABLE ........................ 16
» SOLID STATE DEVICE BASE DIAGRAM ....... 18
» CHASSIS LAYOUT .......................................... 19
» BLOCK DIAGRAM ........................................... 20
» WAVEFORMS .................................................. 23
» SCHEMATIC DIAGRAM
Ë REMOTE CONTROL UNIT .......................... 24
Ë TUNER ......................................................... 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
FEATURE
Ë Blue Back Noise Mute
Ë Front AV In and Rear AV In/Out Terminals
Ë Colour-Comb Filter (NTSC AV In)
Ë Hotel Mode
Ë Front Headphone Jack
Ë Multi Language OSD (English/Chinese/French/
CONTENTS
Page
WARNING
SHARP CORPORATION
1
COLOUR TELEVISION
Chassis No. UA-1
CX34K3
Arabic/Malay/Russian)
Ë MAIN UNIT ................................................... 26
Ë CRT UNIT ..................................................... 28
Ë HEADPHONE UNIT ..................................... 28
» PRINTED WIRING BOARD ASSEMBLIES ..... 29
» REPLACEMENT PARTS LIST
Ë ELECTRICAL PARTS
MAIN UNIT ................................................... 34
CRT UNIT ..................................................... 38
HEADPHONE UNIT ..................................... 38
Ë SUPPLIED ACCESSORIES ........................ 39
Ë PACKING PARTS ......................................... 39
Ë CABINET PARTS ......................................... 39
CX34K3
S10V9CX34K3//
Page
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Summary of Contents for Sharp CX34K3
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Page 1: Table Of Contents
CX34K3 SERVICE MANUAL S10V9CX34K3// COLOUR TELEVISION Chassis No. UA-1 CX34K3 MODEL 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. -
Page 2: Specifications
SPECIFICATIONS Convergence ................. Self Converging System IMPORTANT SERVICE NOTES Focus ..................Quadra-Potential Electrostatic Maintenance and repair of this receiver should be done by Sweep Deflection ....................Magnetic qualified service personnel only. Intermediate Frequencies Picture IF Carrier ....................38.9 MHz SERVICING OF HIGH VOLTAGE SYSTEM AND Sound IF Carrier Frequency 5.5 MHz ...................... -
Page 3: Adjustment Precautions
Ë SERVICE MODE ADJUSTMENT PRECAUTIONS (1) In the Service Mode, Key is used to select the mode in the following order. This model’s setting are adjusted in two different ways: though the I C bus control and in the conventional analog manner. The adjustments via the I C bus control include preset-only items and variable data. -
Page 4: Cx34K3
USER DATA IN SERVICE MODE Y-DELAY OFFSET ADJ. ADJ. OPTION MODE MODE MODE * While SERVICE mode ON, EEPROM DATA will switch to the service data. ↓ ↓ ↓ Also, once SERVICE mode OFF, EEPROM will switch back to previous USER DATA. Y-D TIME FOR PAL (TV) (DL-PT) COLOUR OFFSET (PAL) (COL-OP) VERTICAL SCAN DISABLE(VSD) -
Page 5: Cx34K3
After short JA122 & 124, and turn on the main power switch, read data from E PROM EEPROM ITEMS DATA LENGTH INITIAL DATA FIX/ADJ REMARK address 00H ~ 03H, and compare to the list below, if different, initialize the E PROM. -
Page 6: Cx34K3
INITIAL SETTING SHIPPING SETTING & CHECKING (1) In service mode, After execute select POS 1, store the following tuning data in E PROM. (1) The following default data has been factory-set for the E PROM. MCL1 MCL2 ITEMS DATA SETTING CH-No. -
Page 7: Cx34K3
PIF ADJUSTMENT PURITY ADJUSTMENT NO. Adjustment part Adjusting procedure and conditions Waveform and others NO. Adjustment part Adjusting procedure and conditions Waveform and others Tuner IFT 1. Get the tuner ready to receive the E-9 CH PURITY ADJ. 1. Receive the GREEN-ONLY signal. Adjust the (PRESET) signal, but with no signal input. -
Page 8: Cx34K3
CONVERGENCE ADJUSTMENT CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT NO. Adjustment part Adjusting procedure and conditions Waveform and others NO. Adjustment part Adjusting procedure and conditions Waveform and others CONVERGENCE 1. Receive the "Crosshatch Pattern" signal. CRT CUTOFF 1. Switch TV to VIDEO mode, BLUE BACK OFF 3.0Vdc ADJ. -
Page 9: Cx34K3
HORIZONTAL AND VERTICAL DEFLECTION LOOP ADJUSTMENT NTSC CHROMA ADJUSTMENT NO. Adjustment part Adjusting procedure and conditions Waveform and others NO. Adjustment part Adjusting procedure and conditions Waveform and others V-LINEARITY 1. Receive Monoscope Pattern Signal. SUB-TINT 1. Receive the "NTSC3.58 Colour Bar" signal C BUS 2. -
Page 10: Cx34K3
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO) FUNCTION OPERATION CHECKING (VIDEO AND AUDIO) (Continued) NO. Adjustment part Adjusting procedure and conditions Waveform and others CONTRAST 1. Receive "Monoscope Pattern" signal. NO. Adjustment part Adjusting procedure and conditions Waveform and others 2. Set P-Mode to select CONTRAST. Colour 1. -
Page 11: Cx34K3
HEADPHONE JACK CHECKING MEMORY MAP NO. Adjustment part Adjusting procedure and conditions Waveform and others DATA ADDRESS MICO EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL HEADPHONE 1. Receive PAL COLOUR PAR with SOUND (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK OUTPUT 400Hz, 100% MODULATION (±50kHz Dev). -
Page 12: Cx34K3
DATA DATA MICO EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL ADDRESS MICO EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL ADDRESS (HEX) (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK... -
Page 13: Cx34K3
DATA DATA ADDRESS MICO EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL ADDRESS MICO EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK TUNING FREQUANCY (LOWER PART) POS 25... -
Page 14: Cx34K3
DATA DATA ADDRESS MICO EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL ADDRESS MICO EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK TUNING FREQUANCY (HIGHER PART) POS 68... -
Page 15: Ua1 Hotel Mode Application
DATA UA1 HOTEL MODE APPLICATION ADDRESS MICO EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK How to enable/disable the "Hotel Mode" ? Ans: a) Press the R/C (FUNCTION) {1} key until language selection appear, within five second press the (one/two digit) {2} key and keep pressing it for five second, then you can see the hotel mode with four digits password. -
Page 16: Trouble Shooting Table
TROUBLE SHOOTING TABLE TROUBLE SHOOTING TABLE (Continued) CIRCUITS TO BE CHECKED: NO RASTER NO PICTURE, NO SOUND » Tuner. » PIF. » Automatic Gain Control. » (5V), (32V) Power Source. Check F701. Blown out. Does the noise level increase at max. Contrast, Brightness and Sound controls ? Normal Replace the fuse. -
Page 17: Cx34K3
TROUBLE SHOOTING TABLE TROUBLE SHOOTING TABLE (Continued) (Continued) NEITHER VERTICAL NOR NO SPECIFIC COLOUR HORIZONTAL SYNCHRONIZATION Is some colour produced in CIRCUIT TO BE CHECKED: B/W broadcast reception ? » Sync. Separator Circuit. Check pins (16), (17) and (34) of IC801. Check IC801, R801, R802, Is the white balance properly R803, D804, 805, D806 and... -
Page 18: Solid State Device Base Diagram
CX34K3 SOLID STATE DEVICE BASE DIAGRAM TOP VIEW COLLECTOR COLLECTOR :BR: BASE EMITTER BASE EMITTER M24C04W B709A FX0008GE D601A COLLECTOR BASE EMITTER 2SC2735 IX3368CE SIDE VIEW BASE 1 2 3 COLLECTOR BASE EMITTER COLLECTOR SE115N EMITTER 2SA1015 PST573J DX0386CE 2SC1815... -
Page 19: Chassis Layout
CX34K3 CHASSIS LAYOUT... -
Page 20: Block Diagram
CX34K3 BLOCK DIAGRAM... - Page 21 CX34K3...
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Page 22: Waveforms
CX34K3 WAVEFORMS 1.0 Vp-p 2.5 Vp-p (H) 2.55 Vp-p (H) 3.35 Vp-p (H) 68.0 Vp-p (H) 66.0 Vp-p (H) 72.0 Vp-p (H) 3.0 Vp-p (H) 1.85 Vp-p (H) 150.0 Vp-p (H) 8.4 Vp-p (H) 1.3 Vp-p (H) 0.98 Vp-p (H) 43.0 Vp-p (H) -
Page 23: Description Of Schematic Diagram
CX34K3 DESCRIPTION OF SCHEMATIC DIAGRAM SAFETY NOTES: NOTES: 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE 1. The unit of resistance “ohm” is omitted. REPLACING PARTS. (K = 1000 ohms, M = Meg ohm). 2. All resistors are 1/16 watt, unless otherwise noted. -
Page 24: Ë Tuner
CX34K3 Ë Tuner å VTUVTST5HD84/ NOTE : The parts here shown are supplied as an assembly but not independently. - Page 25 CX34K3 SCHEMATIC DIAGRAM: MAIN Unit...
- Page 26 CX34K3 SCHEMATIC DIAGRAM: CRT and HEADPHONE Unit...
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Page 27: Printed Wiring Board Assemblies
CX34K3 PRINTED WIRING BOARD ASSEMBLIES PWB-B: CRT Unit (Wiring Side) (Component Side) (Chip Parts Side) PWB-C: HEADPHONE Unit... - Page 28 CX34K3 PWB-A: MAIN Unit (Component Side)
- Page 29 CX34K3 PWB-A: MAIN Unit (Chip Parts Side)
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Page 30: Main Unit
CX34K3 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PARTS LIST IC753 VHiSE115N//-1 R SE115N IC801 RH-iX3368CEN0 R I.C. IC1002 VHiPST573J/-1 R I.C. PARTS REPLACEMENT IC1003 VHiM24C04W/-1 R I.C. Replacement parts which have these special safety characteristics... - Page 31 CX34K3 Ref. No. Part No. Description Code Ref. No. Part No. Description Code D716 RH-EX0615GEZZ R Zener Diode C303 VCEA0A1CW106M R 10 Electrolytic D718 RH-EX0649GEZZ R Zener Diode C304 VCQYTA1HM473J R 0.047 50V Mylar D719 RH-EX0649GEZZ R Zener Diode C305 VCQYTA1HM473J R 0.047 50V...
- Page 32 CX34K3 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C707 RC-EZ1044CEZZ R 150 400V Electrolytic RJ30 VRN-MD2AL000J 1/10W Metal Film C708 RC-KZ0160GEZZ R 0.01 250V Ceramic RJ31 VRN-MD2AL000J 1/10W Metal Film C709 RC-QZA471TAYJ R 470p Mylar...
- Page 33 CX34K3 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R331 VRN-MD2AL102J R 1.0k 1/10W Metal Film R723 VRD-RA2BE684J R 680k 1/8W Carbon R332 VRN-MD2AL561J R 560 1/10W Metal Film R724 VRD-RA2BE102J R 1.0k 1/8W Carbon R333...
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Page 34: Crt Unit
CX34K3 Ref. No. Part No. Description Code Ref. No. Part No. Description Code D888 VHD1SS82///1A R Diode S1002 QSW-K0077GEZZ R CH-Down D890 RH-DX0627GEZZ R Zender Diode QSW-K0079GEZZ CAPACITORS S1003 QSW-K0077GEZZ R VOL-Up C871 VCKYPA1HB471K R 470p Ceramic C872 VCKYPA1HB471K R 470p... -
Page 35: Miscellaneous Parts
Not Available – Front Cabinet — LHLDF0044PEZZ J Holder GCOVA0105PESA J Cover, LED, R/C Receiver LHLDW1033PEZZ J Holder HBDGB0018PESB J Badge, “SHARP” LHLDW1033PEZZ J Holder JBTN-0313PESA J Button, Control LHLDW1060PEZZ J Holder JBTN-0314PESA J Button, Power QCNW-2377PEZZ J Connecting Cord... - Page 36 Code Ref. No. Part No. Description Code COPYRIGHT © 2000 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.
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