Sharp CX51K3 Service Manual
  1. Manuals
  2. Brands
  3. Sharp Manuals
  4. TV
  5. CX51K3
  6. Service manual
Sharp CX51K3 Service Manual

Sharp CX51K3 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
CX51K3
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
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
» CHASSIS LAYOUT .......................................... 19
» BLOCK DIAGRAM ........................................... 21
» WAVEFORMS .................................................. 24
» SCHEMATIC DIAGRAM
Ë REMOTE CONTROL UNIT .......................... 25
Ë TUNER ......................................................... 26
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
CX51K4
FEATURE
CONTENTS
Page
WARNING
SHARP CORPORATION
COLOUR TELEVISION
Chassis No. UA-1
MODELS
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 Laguage OSD (English/Chinese/French/
Arabic/Malay/Russian)
Ë CRT UNIT ..................................................... 27
Ë HEADPHONE UNIT ..................................... 27
Ë MAIN UNIT (CX51K3) .................................. 28
Ë MAIN UNIT (CX51K4) .................................. 30
» REPLACEMENT PARTS LIST
Ë ELECTRICAL PARTS
MAIN UNIT ................................................... 37
CRT UNIT ..................................................... 41
HEADPHONE UNIT ..................................... 41
Ë SUPPLIED ACCESSORIES ........................ 42
Ë PACKING PARTS ......................................... 42
Ë CABINET PARTS ......................................... 42
1
CX51K3
CX51K4
S30X7CX51K3//
CX51K3
CX51K4
Page

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CX51K3 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Sharp CX51K3

Summary of Contents for Sharp CX51K3

  • Page 1: Table Of Contents

    Ë CRT UNIT ............. 27 » SPECIFICATIONS ..........2 Ë HEADPHONE UNIT ........27 » IMPORTANT SERVICE NOTES ......2 Ë MAIN UNIT (CX51K3) ........28 » ADJUSTMENT PRECAUTIONS ......3 Ë MAIN UNIT (CX51K4) ........30 » UA1 HOTEL MODE APPLICATION ....15 »...

  • Page 2: Specifications

    4. Handle the picture tube only when wearing shatterproof goggles and after Speaker discharging the high voltage completely Size CX51K3 .................... 8 cm Round (1 pc) X-RAY CX51K4 ..................5 × 9 cm Elliptic (2 pcs) Voice Coil Impedance ................. 16 ohms at 400 Hz This receiver is designed so that any X-Ray radiation is kept to an absolute minimum.

  • 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 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 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 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 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 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 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 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 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 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 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 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) key until language selection appear, within five second press the (one/two digit) 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 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, D805, D806...

  • Page 18: Solid State Device Base Diagram

    CX51K3 CX51K4 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...

  • Page 19: Chassis Layout

    CX51K3 CX51K4 MODEL CX51K3 CHASSIS LAYOUT...
  • Page 20 CX51K3 CX51K4 MODEL CX51K4 CHASSIS LAYOUT P1002...

  • Page 21: Block Diagram

    CX51K3 CX51K4 BLOCK DIAGRAM...
  • Page 22 CX51K3 CX51K4...

  • Page 23: Waveforms

    CX51K3 CX51K4 WAVEFORMS 1.12 Vp-p 3.17 Vp-p (H) 3.11 Vp-p (H) 3.11 Vp-p (H) 83.8 Vp-p (H) 80.0 Vp-p (H) 87.2 Vp-p (H) 3.11 Vp-p (H) 1.93 Vp-p (H) 133.0 Vp-p (H) 8.48 Vp-p (H) 1.17 Vp-p (H) 0.91 Vp-p (H) 48.0 Vp-p (H)

  • Page 24: Description Of Schematic Diagram

    CX51K3 CX51K4 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 25: Ë Tuner

    CX51K3 CX51K4 Ë Tuner å VTUVTST5HD84/ NOTE : The parts here shown are supplied as an assembly but not independently.
  • Page 26 CX51K3 CX51K4 SCHEMATIC DIAGRAM: CRT and HEADPHONE Unit...
  • Page 27 CX51K3 CX51K4 MODEL CX51X3 SCHEMATIC DIAGRAM: MAIN Unit...
  • Page 28 CX51K3 CX51K4 MODEL CX51X4 SCHEMATIC DIAGRAM: MAIN Unit...
  • Page 29 CX51K3 CX51K4 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Component Side)
  • Page 30 CX51K3 CX51K4 PWB-A: MAIN Unit (Chip Parts Side)
  • Page 31 CX51K3 CX51K4 PWB-B: CRT Unit (Wiring Side) (Component Side) (Chip Parts Side) PWB-C: HEADPHONE Unit...

  • Page 32: Ë Crt Unit

    D512 RH-DX0475CEZZ R Diode (NOT REPLACEMENT ITEM) D513 RH-DX0475CEZZ R Diode D514 RH-EX0903CEZZ R Zener Diode PWB-A DUNTK9988WEY4 – MAIN Unit (CX51K3) — D515 RH-EX0903CEZZ R Zener Diode PWB-A DUNTK9988WEY5 – MAIN Unit (CX51K4) — D602 RH-DX0475CEZZ R Diode PWB-B DUNTK9990WEX0 –...
  • Page 33 CX51K3 CX51K4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code D753 RH-DX0471CEZZ R Diode C315 VCKYPA1HF103Z R 0.01 Ceramic D756 RH-DX0471CEZZ R Diode C317 VCEA0A1HW224M R 0.22 Electrolytic D757 RH-DX0471CEZZ R Diode C318 VCKYCY1HB102K R 1000p 50V...
  • Page 34 CX51K3 CX51K4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C713 RC-KZ007JCEZZ R 0.01 250V Ceramic RJ64 VRN-MD2AL000J 1/10W Metal Film C714 RC-KZ0338CEZZ R 560p Ceramic RJ66 VRN-MD2AL000J 1/10W Metal Film C715 VCKYPA2HB102K R 1000p 500V Ceramic...
  • Page 35 CX51K3 CX51K4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R404 VRD-RA2BE820J R 82 1/8W Carbon R752 VRD-RA2BE682J R 6.8k 1/8W Carbon R406 VRN-MD2AL103J R 10k 1/10W Metal Film R753 VRS-VV3LB472J R 4.7k 3W Metal Oxide...

  • Page 36: Crt Unit

    R 1.0k 1/8W Carbon P301 QPLGN0441CEZZ R Plug, 4-pin (S)(CX51K4) R893 VRD-RA2BE102J R 1.0k 1/8W Carbon P302 QPLGN0241CEZZ R Plug, 2-pin (S)(CX51K3) R894 VRD-RA2BE102J R 1.0k 1/8W Carbon P303 QPLGN0441CEZZ R Plug, 4-pin (HP)(CX51K3) R895 VRD-RA2BE471J R 470 1/8W Carbon...
  • Page 37 Not Available – Front Cabinet — SP302 VSP9050PB25WA R Speaker (CX51K4) GCOVA0116PESA J Cover, LED, R/C Receiver QCNW-2378PEZZ J Connecting Cord (CX51K3) AE HBDGB0019PESB J Badge, “SHARP” QCNW-2379PEZZ J Connecting Cord (CX51K3) AE JBTN-0314PESA J Button, Control QCNW-2381PEZZ J Connecting Cord (CX51K4) AG...

This manual is also suitable for:

Cx51k4

Table of Contents