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HV-L34PRO SERVICE MANUAL COLOUR TELEVISION HV-L34PRO BASIC CHASSIS HV-L34PRO HV-L34PRO HV-L34PRO HV-L34PRO CONTENTS ! SPECIFICATIONS ・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・ 2 ! SPECIFIC SERVICE INSTRUCTIONS ・・・・ ・・・・ 8 ・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・ ・・・・ ・・・・ ! SAFETY PRECAUTIONS ・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・ 3 ! SERVICE ADJUSTMENTS・・・・・・・・・・・・ ・・・・・・・・・・・・ 14 ・・・・・・・・・・・・・・...
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HV-L34PRO REPLACEMENT OF MEMORY ICs 1. Memory ICs This TV use memory ICs. In the memory ICs, there are memorized data for correctly operating the video and deflection circuits. When replacing memory ICs, be sure to use ICs written with the initial values of data.
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HV-L34PRO SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1) MODEL No. HV-L34PRO HV-L34PRO HV-L34PRO HV-L34PRO HV-L34PRO Setting item 1. TEXT ↑ ↑ 2. BLUE BACK MUTE ↑ ↑ ↑ ↑ 3. E. M. C ↑ ↑ ↑ ↑ ↑ 4. WHITE BACK ↑...
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HV-L34PRO USER SETTING VALUES (TABLE 3) Setting item Setting value Setting item Setting value MAIN POWER SW SUB POWER SHIPPING CHANNEL DISPLAY INDICATED See ; OPERATING PRESET CHANNEL VOLUME LEVEL INSTRUCTIONS. PICTURE SETTING INSTALL PICTURE MODE BRIGHT LANGUAGE ENGLISH " PRESET CHANNEL ONLY...
HV-L34PRO SERVICE ADJUSTMENTS BEFORE STARTING SERVICE ADJUSTMENT 1. There are 2 ways of adjusting this TV: One is with the 7. Preparation for adjustment (presetting): Unless otherwise specified in the adjustment items, preset the REMOTE CONTROL UNIT and the other is the conventional method using adjustment parts and components.
HV-L34PRO ADJUSTMENT LOCATIONS FRONT CONTROL PWB (R) FRONT CONTROL PWB (L) TV/VIDEO EXT VOL UP VOL DOWN S IN POWER SW POWER SPETIALIZER FRONT FRONT MENU/ IN (VIDEO-4) HEAD PHONE CH DOWN CH UP F901 C901 CN002 LF901 Power cord...
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HV-L34PRO BASIC OPERATION SERVICE MENU 1. TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 2. SERVICE MENU ITEMS With the SERVICE MENU, various settings (adjustments) can be made, and they are broadly classified in the following items of settings (adjustments): (1) 1.
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HV-L34PRO 3. BASIC OPERATION OF SERVICE MENU (1) How to enter SERVICE MENU Press the PICTURE MODE key and the DISPLAY key of the SERVICE MENU REMOTE CONTROL UNIT simultaneously, and the SERVICE MENU screen of Fig. 1 will be displayed.
HV-L34PRO SERVICE MENU SCREEN SERVICE MENU SERVICE MENU 1. IF 2. V/C 3. AUDIO 4. DEF 5. VSM PRESET 6. STATUS 7. PIP 8. WB PRESET 9. SHIPPING(OFF) 0. BUS FREE 1-0 : SELECT DISP : EXIT SUB MENU 1. IF (CW) 5.
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HV-L34PRO (3) Method of Setting " Method of Setting 1.IF [VCO] ・・・・・・・・・・・・・・・・・・・・・・・・・・・ * It must not adjust without signal ① 1 Key ・・・・・・・・・・・・・・・・・・・・・・・・・ Select 1.IF. ② 1 Key ・・・・・・・・・・・・・・・・・・・・・・・・ Select 1. VCO (CW) Check the arrow position between the ABOVE REF. and BELOW REF.
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HV-L34PRO ADJUSTMENT CHECKING ITEM Measuring Item Test point Adjustment part Description instrument Check of B1 Signal TP-91(B1) 1. RGB BLK 1. Receive any broadcast. TP-E(# # # # ) Power Supply Generator 2. Press the ZOOM key and select the FULL mode.
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HV-L34PRO ADJUSTMENT OF FOCUS & SCREEN Measuring Item Test point Adjustment part Description instrument Adjustment of Signal FOCUS 1 VR(In HVT) 1. Receive a cross-hatch signal. FOCUS generator 2. Press the ZOOM key and select the regular mode. FOCUS 2 VR (IN CRT SOCKET PWB) 3.
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HV-L34PRO VSM PRESET SETTING Measuring Item Test point Adjustment part Description instrument Setting of Remote 1.CONT. 1. Select 5.VSM PRESET from the SERVICE MENU. VSM PRESET control unit 2. BRIGHT 2. Select STD with the PICTURE MODE key of the remote control unit.
HV-L34PRO VIDEO/CHROMA CIRCUIT ADJUSTMENT The setting (adjustment) using the REMOTE CONTROL UNIT is made 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.
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HV-L34PRO Measuring Item Test point Adjustment part Description instrument Adjustment Remote 7.COLOUR [Method of adjustment without measuring instrument] of SUB control unit (PAL/SECAM/NTSC) COLOURⅠ Ⅰ Ⅰ Ⅰ PAL COLOUR (PAL COLOUR) 1. Receive PAL broadcast. 2. Select 2.V/C from the SERVICE MENU.
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HV-L34PRO Measuring Item Test point Adjustment part Description instrument Adjustment Signal TP-47B 7.COLOUR [Method of adjustment using measuring instrument] TP-E(# # # # ) of SUB generator (PAL/SECAM/NTSC) COLOUR Ⅱ Ⅱ Ⅱ Ⅱ [CRT PAL COLOUR (PAL COLOUR) Oscilloscope SOCKET 1.
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HV-L34PRO Measuring Item Test point Adjustment part Description instrument Adjustment Remote 8.TINT [Method of adjustment without measuring instrument] control unit NTSC 3.58 TINT (NTSC 3.58 TINT) SUB TINT 1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field colour bar with 75% white) from the EXT terminal.
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HV-L34PRO DEF. CIRCUIT ADJUSTMENT There are 3 aspect modes ( ① ① ① ① REGULAR, ② ② ② ② ZOOM & ③ ③ ③ ③ 16 : 9) of the adjustment ( 1 ) 100Hz i mode, ( 2 ) 60Hz p and ( 3 ) 120Hz i mode ・...
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HV-L34PRO Measuring Item Test point Adjustment part Description instrument Adjustment Signal 1. V- SHIFT [REGULAR mode] generator 1. Receive a circle pattern signal of vertical frequency 50Hz. V-SHIFT 2. Select 4.DEF from the SERVICE MENU. 3. Select 1.V-SHIFT with the function UP/DOWN key.
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HV-L34PRO Measuring Item Test point Adjustment part Description instrument 13. Receive a circle pattern signal. Adjustment of Signal 3.H-CENT. H. CENTER generator 14. Select 3.H-CENT and set the initial setting value. Remote 15. Adjust H-CENT to make C=D . control unit 16.
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HV-L34PRO Measuring Item Test point Adjustment part Description instrument 26. Receive a cross-hatch signal. Adjustment Signal 5.TRAPEZ of TRAPEZ generator 27. Select 5.TRAPEZ with the function UP/DOWN key. Remote 28. Set the initial setting value of TRAPEZ with the function control unit LEFT/RIGHT key.
HV-L34PRO Measuring Item Test point Adjustment part Description instrument " In case where there is a bow-shaped distortion of images on Adjustment Signal 11.BOW of BOW generator the screen. (Fig.B) Remote 42. Select 11.BOW with the function UP/DOWN key. control unit 43.
HV-L34PRO AUDIO CIRCUIT ADJUSTMENT " Do not touch 3. AUDIO adjustment of the SERVICE MENU as it requires no adjustment. If values had changed for the some reason, set the initial values in the following table. 3. AUDIO(Do not adjust)
HV-L34PRO PURITY, CONVERGENCE ADJUSTMENT PURITY ADJUSTMENT 1. Demagnetize CRT with the demagnetizer. WEDGE DYNAMIC CONVERGENCE ADJUSTMENT 2. Loosen the retainer screw of the deflection yoke. PURITY MAGNET(P) 3. Remove the wedges. 4. Input a green raster signal from the signal generator, and turn the screen to green raster.
HV-L34PRO STATIC CONVERGENCE ADJUSTMENT (FRONT VIEW) 1. Input a crosshatch signal. 2. Using 4-pole convergence magnets, overlap the red and blue lines in the center of the screen (Fig.1) and turn them to magenta (red/blue). 3. Using 6-pole convergence magnets, overlap the magenta (red/blue) and green lines in the center of the screen and turn Fig.
HV-L34PRO REPLACEMENT OF CHIP COMPONENT ! CAUTIONS 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.