Jvc-HV-32-D-25-EUW-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. No.52068 2002/12 HV-32D25EUW HV-32D25EJW COLOUR TELEVISION HV-32D25EUW HV-32D25EJW CONTENTS SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SPECIFIC SERVICE INSTRUCTIONS . . . . . .

2、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SERVICE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 BASIC CHASSIS MK RadioFans.CN 收音机爱 好者资料库 HV-32D25EUW HV-32D25EJW 2 SPECIFICATION Item Content HV-32D25EUWHV-32D25EJW Dimensions (W x H x D

3、)94.6cm x 56.2cm x 55.1cm Mass58.0kg TV RF SystemCCIR B/G, I, D/K, L/L Colour SystemPAL / SECAM / NTSC *The EXT terminals also support the NTSC 3.58MHz/4.43MHz system. Stereo SystemA2 (B/G, D/K) / NICAM (B/G, I, D/K, L) Teletext SystemFLOF(Fastext), TOP, WST(World Standard system) Receiving Frequenc

4、yVHF UHF CATV 47MHz 470MHz 470MHz 862MHz 116MHz 172MHz / 220MHz 469MHz 47MHz 470MHz (IRELAND only) 470MHz 862MHz - - Intermediate Frequency VIF SIF 38.9MHz(B/G, D/K, I) / 33.95MHz(L) 33.4MHz(5.5MHz:B/G) / 32.9MHz(6.0MHz:I) / 32.4MHz(6.5MHz:L,D/K) / 40.45MHz(6.5MHz:L) Colour Sub Carrier Frequency PAL

5、 SECAM NTSC 4.43MHz 4.40625MHz / 4.25MHz 3.58MHz / 4.43MHz Power InputAC 220VAC240V, 50Hz Power ConsumptionMax 300W / Avg. 160W Aerial Input75 ohm unbalanced, coaxial Picture TubeVisible size 76 cm(measured diagonally) Aspect ratio 16:9 High Voltage31.0kV 0.2kV (At beam current : 0uA ) SpeakerMAIN C

6、ENTER WOOFER 10W + 10W, 13 cm x 6.5 cm oval x2 7.5W, 16 cm x 4 cm oval x 1 18W, 13 cm round x 1 EXT-1 (Input/Output)21 pin Euro connector (SCART socket) Video input, Audio L/R inputs and RGB inputs are available. TV broadcast outputs (Video and Audio L/R) are available. EXT-2 (Input/Output)21 pin Eu

7、ro connector (SCART socket) Video input, S-Video (Y/C) input, Audio L/R inputs and RGB inputs are available. Video and Audio L/R outputs are available. T-V LINK functions are available. EXT-3 (Input/Output)21 pin Euro connector (SCART socket) Video input, S-Video (Y/C) input and Audio L/R inputs are

8、 available. EXT-4 (Input)Component video RCA pin jack x 3 Y : 1V(p-p), 75 ohm Pb / B-Y: 0.7V(p-p), 75 ohm Pr / R-Y : 0.7V(p-p), 75 ohm Progressive-scanning signals(626p or 525p) are available Audio (L/R)500mv(rms) (-4dBs), High Impedance RCA pin jack x 2 EXT-5 (Input)Video1V(p-p), 75 ohm RCA pin jac

9、k x 1 Audio (L/R)500mv(rms) (-4dBs), High Impedance RCA pin jack x 2 S-VideoMini DIN 4-pin Y : 1V(p-p) Positive (Negative sync provided), 75 ohm C : 0.286V(p-p) (burst signal), 75 ohm DIGITAL AUDIO INPUTOPTICAL x 1 COAXIAL x 1 (Dolby Digital is available.) AUDIO OUT (Variable)01V(rms), Low Impedance

10、 RCA pin jack x 3 SURROUND REAR OUT7.5W + 7.5W, 8 ohm (push terminal) Headphone jackStereo mini jack (3.5mm) Remote Control UnitRM-C61 (AAA/R03 Dry cell battery x 2) : HV-32D25EUW RM-C62 (AAA/R03 Dry cell battery x 2) : HV-32D25EJW Design OPERATING INSTRUCTIONS. COLOUR TEMPNORMAL ZOOM MODEPANORAMICT

11、INTNORMAL SUB POWERON DISPLAYINDICATEDINSTALL SOUND LEVEL10LANGUAGEENGLISH EDITPRESET CHANNEL ONLY OTHER : NON (SPACE) PICTURE FEATURES DIGITAL VNRAUTOSOUND DIGIPURE PROAUTOBASSCENTRE COLOUR SYSTEMTV : Depends on PR/CH EXT : AUTO TREBLECENTRE BALANCECENTRE PICTURE TILTCENTREDIGITAL SURROUNDSURROUD O

12、FF N/S CANCELCENTRE3D PHONIC TV SPEAKER SUB WOOFER LEVEL VOLUME L/C/R OFF CENTRE MAX 4: 3 AUTO ASPECTPANORAMIC PIP POSITIONRight below HEAD PHONE VOLUME TV SPEAKER OUTPUT 20 OFF MAIN FEATURES SLEEP TIMEROFF BLUE BACKONDOLBY DIGITAL TV SPEAKER REAR SPEAKER SUB WOOFER TEST TONE LEFT CENTRE RIGHT SURRO

13、UND DELAY TIME L/C/R ON OFF OFF MAX MAX MAX MAX 0 CHILD LOCK ID NO ALL CH 0000 OFF DECODER (EXT-2)ALL CH: OFF DUBBINGEXT-1-EXT-2 EXT SETTING ID S-IN NON(SPACE) NON(SPACE) HV-32D25EUW HV-32D25EJW 15 2.5.4SERVICE MENU SETTING ITEMS Table 2 Setting itemSetting valueSetting itemSetting value 1.IF1.VCO 2

14、.ATT ON/OFF 6.STATUS(Do not adjust) 2. V/C1.CUT OF R 12.TWN CONT 2.CUT OF G 13.COLOUR 3.CUT OF B 14.HUE 4.DRIVE R 15.BY GAIN 5.DRIVE G 16.TWN COL 6.DRIVE B 17.TWN TINT 7.TWN HI R 18.B OF MR 8.TWIN HI B 19.B OF MB 9.BRIGHT 20.B OF SR 10.CONT 21.B OF SB 11.TWN BRIG 7.VNR (Do not adjust) 1.MYLV 10.MCCO

15、R 2.ONMVF 11.CLTL 3.MYCOR 12.YNGA 4.MYGA 13.COR_OF 5.YEGON 14.LPF_OF 6.YEGL 15.YCTL 7.YLTL 17.YNCON 8.MCLV 9.MCGA 3.AUDIO (Do not adjust) 1.ERR LIMIT 2.A2 ID THR 3.Q-PEAK SOUND SYSTEM 4.SOUND LEVEL SOUND SYSTEM 8.IP (Do not adjust) PPA001 - PPA008 PPB001 - PPB036 PPC001 - PPC007 ADS001 - ADS034 IPA0

16、01 - IPA120 IPB001 - IPB088 IPC001 - IPC044 IPD001 - IPD058 4.DEF1.FREE-RUN 7.EW-PIN 2.V-SHIFT 8.COR-UP 3.V-SIZE 9.COR-LO 4.H-CENT 10.V.S-COR 5.H-SIZE 11.V-LIN 6.TRAPEZ 9.SHIPPING(Do not select under the adjustment) 5.VSM PRESET1.CONT 2.BRIGHT 3.SHARP 4.COLOUR 5.HUE 6.WDR R 7.WDR G 8.WDR B HV-32D25E

17、UW HV-32D25EJW 16 2.6 REPLACEMENT OF CHIP COMPONENT 2.6.1CAUTIONS (1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern. (3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it. 2.6.2SOLDERING IR

18、ON (1) Use a high insulation soldering iron with a thin pointed end of it. (2) A 30w soldering iron is recommended for easily removing parts. 2.6.3REPLACEMENT STEPS 1. How to remove Chip parts Resistors, capacitors, etc. (1) As shown in the figure, push the part with tweezers and alternately melt th

19、e solder at each end. (2) Shift with the tweezers and remove the chip part. Transistors, diodes, variable resistors, etc. (1) Apply extra solder to each lead. (2) As shown in the figure, push the part with tweezers and alternately melt the solder at each lead. Shift and remove the chip part. Note :

20、After removing the part, remove remaining solder from the pattern. 2. How to install Chip parts Resistors, capacitors, etc. (1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. Then heat and melt the solder at both ends of the

21、chip part. Transistors, diodes, variable resistors, etc. (1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First solder lead A as indicated in the figure. (4) Then solder leads B and C. SOLDER SOLDER A B C A B C HV-32D25

22、EUW HV-32D25EJW 17 SECTION 3 SERVICE ADJUSTMENTS 3.1 ADJUSTMENT PREPARATION (1) There are 2 ways of adjusting this TV: One is with the REMOTE CONTROL UNIT and the other is the conventional method using adjustment parts and components. (2) The setting (adjustment) using the REMOTE CONTROL UNIT is mad

23、e on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values. (3) Make sure that connection is correctly made AC to AC power source. (4) Turn on the power of the TV and measuring instrument for warm

24、ing up for at least 30 minutes before starting adjustment. (5) If the receive or input signal is not specified, use the most appropriate signal for adjustment. (6) Never touch parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service adjustment

25、. (7) Preparation for adjustment (presetting): Unless otherwise specified in the adjustment items, preset thefollowing functions with the REMOTE CONTROL UNIT: Setting position 3.2 MEASURING INSTRUMENT AND FIXTURES DC voltmeter (or Digital voltmeter) Oscilloscope Signal generator (Pattern generator)

26、PAL/SECAM/NTSC Remote control unit Setting itemSetting value PICTURE MODENORMAL DIGITAL VNRAUTO DIGIPURE PROAUTO SLEEP TIMEROFF TONE BALANCECENTRE DIGITAL SURROUNDOFF BLUE BACKOFF ZOOM MODEFULL HV-32D25EUW HV-32D25EJW 18 3.3 ADJUSTMENT LOCATIONS SIDE CONTROL PWB TOP POWER SW FRONT POWER LED D8801 IC

27、8851 F8901 LF8901 W POWER CORD FRONT MAIN PWBPOWER&DEF PWB LINE FILETER PWB FRONT CONTROL PWB W LF9901 IC9931 P X X P CN001 CN002 CN003 DEF OSC PWB CN009 CN2010 EHT PWB TOP CRT SOCKET PWB TP-R TP-G TP-B TP-E1 (SOLDER SIDE) R3040 T551 HYT S11 5 1 GND 2 N.C. 3 X-ray 4 N.C. 5 B1 R2533 R2528 X-RAY ADJ E

28、HT ADJ MAIN TUNER DOLBY PWBAV SW PWB CN013 CN008 CN006 CN007 CN005 DIST PWB CN8016 F MICOM PWB CN004 EHT PWB FOCUS SCREEN FOCUS (HORIZONTAL) HV-32D25EUW HV-32D25EJW 19 3.4 BASIC OPERATION IN SERVICE MENU 3.4.1TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the remote control unit. 3.4.2

29、SERVICE MENU ITEMS With the SERVICE MENU,various settings (adjustments)can be made,and they are broadly classified in the following items of set- tings: 1.IFThis mode adjusts the setting values of the IF circuit. 2.V/CThis mode adjusts the setting values of the VIDEO / CHROMA circuit. 3.AUDIOThis mo

30、de adjusts the setting values of the SOUND circuit. It is not requirement to adjustment. (Setting only) 4.DEFThis mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given 5.VSM PRESETThis mode adjusts the initial setting values of Bright, Standard & Soft. (VSM: Video Stat

31、us Memory) 6.STATUSIt is no requirement to adjustment. 7.VNRThis mode adjusts the setting values of the DIGITAL circuit. It is not requirement to adjustment. (Setting only) 8.IPThis mode adjusts the setting values of the IP circuit. It is not requirement to adjustment. (Setting only) 9.SHIPPING(OFF)

32、Dont select under the adjustment.as this menu is set in ON after the inspection. Note: When users press the MAIN POWER button, the JVC logo appears. If they press any keys, the LANGUAGE menu appears. 10.BUS FREEIt is not requirement to adjustment. HV-32D25EUW HV-32D25EJW 20 3.4.3BASIC OPERATION IN S

33、ERVICE MENU (1) How to enter SERVICE MENU Press the INFORMATION key and the MUTE key of the REMOTE CONTROL UNIT simultaneously, and the SERVICE MENU screen of Fig. 1 will be displayed. Fig.1 (2) Selection of SUB MENU SCREEN Press one of keys 15 of the REMOTE CONTROL UNIT and select the SUB MENU SCRE

34、EN (See Fig. 3), form the SERVICE MENU. SERVICE MENU - SUB MENU 1. IF 2. V/C 3. AUDIO (Do not adjust) 4. DEF. 5. VSM PRESET 6. STATUS (Do not adjust) 7. VNR (Do not adjust) 8. IP (Do not adjust) 9. SHIPPING (OFF) (Do not adjust) 0. BUS FREE (Do not adjust) Fig.2 (3) Method of Setting 1) Method of Se

35、tting 1.IF 1.VCO : It must not adjust without signal. 2) Method of setting 2.V/C, 3.AUDIO, 4.DEF and 5.VSM PRESET. 3) Do not setting 6.STATUS, 7.VNR, 8.IP, 9.SHIPPING (OFF) and 0.BUS FREE. (4) Release of SERVICE MENU After completing the setting, return to the SERVICE MENU, then again press the INFO

36、RMATION key. 1. IF 3. AUDIO 5. VSM PRESET 7. VNR 2. V/C 6. STATUS 4. DEF SERVICE MENU SERVICE MENU 9. SHIPPING(OFF) 8. IP 0. BUS FREE 1-9 : SELECTi : EXIT Names of keykey OK INFORMATION MUTING OK FUNCTION UP/DOWN FONCTION -/+ KeyFunction (a) 1Select 1.1F (b) 1Select 1.VCO (CW) Make sure that the arr

37、ow position between the ABOVE REF and BELOW REF. (c) INFORMATIONReturn to the SERVICE MENU screen. KeyFunction (a) 25Select one from 2.V/C, 3.AUDIO, 4.DEF and 5.VSM PRESET. (b) FUNCTION UP / DOWN ( ) Select setting items. (c) FUNCTION -/+ ( ) Set (adjust) the setting values of the setting items. (d)

38、 OKMemorize the setting value. (Before storing the setting values in memory, do not press the CH, TV, POWER ON / OFF key if you do, the values will not be stored in memory.) (e) INFORMATIONReturn to the SERVICE MENU screen. HV-32D25EUW HV-32D25EJW 21 Fig.3 SERVICE MENU SCREEN SERVICE MENU V/C 1. CUT

39、 OF R 2. V/C PAL - / +: STORE i : EXIT DEF FULL 1250i 1. V-SHIFT 4. DEF - / +: STORE i : EXIT 1. FREE-RUN 2. V-SHIFT 3. V-SIZE 4. H-CENT 5. H-SIZE 6. TRAPEZ 7. EW-PIN 8. COR-UP 9. COR-LOW 10. V-S.CR 11. V-LIN IF SERVICE MENU 1. VCO 2. ATT ON/OFF 1-2 : SELECT i : EXIT SERVICE MENU 1. IF2. V/C 3. AUDI

40、O4. DEF 5. VSM PRESET6. STATUS 7. VNR8. IP 9. SHIPPING (OFF)0. BUS FREE 1-9 : SELECT: EXITi 1. ERR LIMIT 2. A2 ID THR 3. Q 4. SOUND LEVEL PEAK AUDIO 3. AUDIO 1. ERROR LIMIT 0100 C_AD_BITS = ERROR LIMIT = - / +: STORE i : EXIT 1.IF(VCO) BRIGHT STD SOFT 5. VSM PRESET VSM PRESET NORMAL 1.CONT - / +: ST

41、ORE i : EXIT 1. CONT. 2. BRIGHT 3. SHARP 4. COLOUR 5. HUE 6. WDR R 7. WDR G 8. WDR B Do not move Do not adjust OK OK OK OK PICTURE MODE COOL NORM WARM COLOR TEMP 1. CUT OF R 2. CUT OF G 3. CUT OF B 4. DRIVE R 5. DRIVE G 6. DRIVE B 7. TWN HI R 8. TWIN HI B 9. BRIGHT 10. CONT 11. TWN BRIG 12. TWN CONT

42、 13. COLOUR 14. HUE 15. BY GAIN 16. TWN COL 17. TWN TINT 18. B OF MR 19. B OF MB 20. B OF SR 21. B OF SB HV-32D25EUW HV-32D25EJW 22 3.5 ADJUSTMENTS 3.5.1CHECK ITEM Item Mesuring instrument Test pointAdjustment partDescription B1 POWER SUPPLY Check Signal generator DC voltmeter Remote control unit CN

43、0S1 connector pin-1 (GND) CN0S1 connector pin-5 (B1) POWER & DEF PWB 2. V/C - 1. CUT OF R (1) Receive any broadcast. (2) Select 2. V/C from the SERVICE MENU. (3) Select 1. CUT OF R. (4) Press the YELLOW key to display a signal horizontal line. (5) Connect the voltmeter between 5pin (B1), and 1pin (G

44、ND) of the connector CN0S1. (6) Confirm that the voltage is DC185V 2V. VCO CheckRemote control unit 1. IF - 1. VCO Under normal conditions, no adjustment is required. (1) Receive any broadcast. (2) Select 1.IF from the SERVICE MENU. (3) Select 1.VCO. (4) Check the arrow position of MAIN between the

45、“ABOVE REF.” and “BELOW REF.” . (5) Check the arrow position of SUB between the “ABOVE REF.” and “BELOW REF.”. 1. VCO 2. ATT i: EXIT IF SERVICE MENU 1-2 : SELECT TOO HIGH ABOVE REF JUST REF BELOW REF TOO LOW : EXIT VCO(CW)*MHz MAINSUB The arrow position mean AFC voltage level. HV-32D25EUW HV-32D25EJ

46、W 23 3.5.2HIGH VOLTAGE 3.5.3X-RAY PROTECTOR 3.5.4HORIZONTAL FREQUENCY Item Mesuring instrument Test pointAdjustment partDescription HIGH VOLTAGESignal generator HV voltmeter Remote control unit CRT anode Chassis GND 2. V/C - 1. CUT OF R EHT VR (R2528) EHT PWB (1) Receive any broadcast. (2) Select 2.

47、 V/C from the SERVICE MENU. (3) Select 1. CUT OF R. (4) Press the YELLOW key to display a signal horizontal line. (5) Connect a HV voltmeter between CRT ANODE and chassis GND (6) Adjust EHT VR so that the voltage is 31.0kV 0.2kV. Item Mesuring instrument Test pointAdjustment partDescription X-RAY PR

48、OTECTION Signal generator DC voltmeter CN0S1 connector pin-1 (GND) CN0S1 connector pin-3 (X-RAY) POWER & DEF PWB X-RAY VR (R2533) EHT PWB (1) Receive any broadcast. (2) Connect a DC voltmeter between pin1 and pin3 of the connector CN0S1. (3) Adjust X-RAY VR so that the voltage value is 4.9V 0.2V. It

49、em Mesuring instrument Test pointAdjustment partDescription HORIZONTAL FREQUENCY Signal generator Remote control unit 4.DEF - 1. FREE-RUN (1) Receive the cross-hatch signal. (2) Set the FULL mode. (3) Select 4. DEF from the SERVICE MENU. (4) Select 1.FREE-RUN. (5) Adjust so that the movement of the picture slows most while watching the picture. (6) Press the OK key and memorized the set data.