Hitachi 50VS69A Service Manual
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PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFET Y NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. • All DC voltage to be measured with a tester (100 kΩ/V). Voltage take
Hitachi 50VS69A, PRINTED CIRCUIT BOARDS LC67 POWER PWB (Component side) LC67 102 Component sideComponent side SEMICONDUCTOR LOCATION (Component side) A B C D 1 2 3 4 5 D916 C-1 D917 C-2 I901 B-3 D930 A-4 I902 C-2 D931 B-4 I903 B-4 D932 A-3 I904 B-3 D935 C-3 I905 D-1 D936 C-3 I906 D-1 D937 B-3 I951 B-5 D940 A-1 I972 B-4 D941 A-1 D942 A-1 D943 A-1 D944 A-1 Q931 D-1 D945 A-1 Q951 A-1 D946 A-1 Q952 A-1 D947 A-1 Q953 A-1 D948 A-1 Q954 B-5 D950 C-5 Q955 B-5 D951 C-5 Q956 D-5 D952 C-4 Q990 B-4 D953 C-4 D954 D-4 D95
Hitachi 50VS69A, HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC. 㪚㪦㪧㪰㪩㪠㪞㪟㪫㩷㪺㩷㪈㪐㪐㪐㪄㪉㪇㪇㪍㩷㪤㪦㪥㪫㪘㪭㪠㪪㪫㪘㩷㪪㪦㪝㪫㪮㪘㪩㪜㪃㩷㪠㪥㪚㪅㩷㪘㪣㪣㩷㪩㪠㪞㪟㪫㪪㩷㪩㪜㪪㪜㪩㪭㪜㪛㪅 ACKNOWLEDGMENTS AND TRADEMARKS This LCD Television complies with VESA DDC2B specifications, Plug & Play is a system with computer, peripherals (including monitors) and operating system. It works when the monitor is connected to a DDC ready computer that is running an operating system software that is capable for the
Hitachi 50VS69A, Chassis Plastic Frame Support Metal QUICK DISASSEMBLE GUIDE (Main PWB, Sub PWB, POD PWB) 64 LC67 Ԙ Remove Control Block P#UE26111 (Includes Control PWB Assy P#JT25691) ԙ Remove Screw T2B 3*12 P#MJ03458 Ԛ Remove Digital Core Assy P#UE26121 ԛ Remove Screw T2B 3*12 P#MJ03458(3 pcs.) Ԝ Remove Power PWB Assy P#JT25691
Hitachi 50VS69A, PRINTED CIRCUIT BOARDS LC67 SUB PWB (Solder side) LC67 97 SEMICONDUCTOR LOCATION (Solder side) A B C D 1 2 3 4 5 I001 B-4 IM01 D-4 IM02 C-4 IM03 C-4 IM04 D-3 IM06 C-3 IM07 C-4 IM08 C-4 IT06 B-2 IT08 A-2 Q013 C-4 Q015 C-4 QM01 D-4 QM03 C-4 QM04 C-3 QP05 B-5 QPS1 B-2 QT01 C-2 QT02 C-2 DP09 B-5 DPS1 B-2 DPS2 B-2 DT02 A-1 DT03 C-2 DT04 D-2 XM01 D-4 XT06 B-1 XT07 B-1 XT08 B-1 XT10 A-1 XT11 C-2 CRYSTAL & FILTER IC TRANSISTOR DIODE
Hitachi 50VS69A, NOTICE: Comply with all cautions and safety-related notes located on or inside the cover case and on the chassis or plasma module. WARNING: Since the chassis of this receiver is connected to one side of the AC power supply during operation, whenever the receiver is plugged in service should not be attempted by any- one unfamiliar with the precautions necessary when working on this type of receiver. 1. When service is required, an isolation transformer should be inserted between power line and the receiver before any service is performed on a “HOT” chassis receiver. 2. When replacing a chassis in the receiver, all the protective devices must be put back in place, such as barriers,
Hitachi 50VS69A, 34 • S-VIDEO, Y-P B P R , or HDMI connections are provided for high performance laserdisc players, VCRs etc. that have this feature. Use these connections in place of the standard video connection if your device has this feature. • If your device has only one audio output (mono sound), connect it to the left audio jack on (L/(MONO)) the Rear Panel. • Refer to the operating guide of your other electronic equipment for additional information on connecting your hook-up cables. • A single VCR can be used for VCR #1 and VCR #2, but note that a VCR cannot record its ow
Hitachi 50VS69A, 38 LAMP REPLACEMENT 5. Be sure to install the lamp cover by re-engaging the two clips and slide to the right. Then tighten the screw of the lamp cover before turning the power on, otherwise it may cause unusual colors. If the lamp cover is not installed and you try to turn ON the TV ,the power will be off and the Lamp Indicator will flash (see page 9). NOTE: If power is connected before the Lamp Cover is installed, the power will be off and the Lamp Indicator will flash (see page 9). 6. Plug power cord into AC outlet and turn on the main p
Hitachi 50VS69A, General Soldering Guidelines 1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range 500°F to 600°F. 2. Use an appropriate gauge of resin-core solder composed of 60 parts tin/40 parts lead. 3. Keep the soldering iron tip clean and well-tinned. 4. Thoroughly clean the surfaces to be soldered. Use a small wire- bristle (0.5 inch or 1.25 cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners. 5. Use the following desoldering technique. a. Allow the soldering iron tip to reach normal temperature (500°F
AUDIO CIRCUIT BLOCK DIAGRAM TABLE OF CONTENTS 54 LC67 Seine IF12 TPA3100 Digital Power Amp. IF15 NJU26107 Volume Mute Balance Bass/Treble Surround Bass Boost AGC IF11 TPA3100 Digital Power Amp. I2S I2S IF09 WM8520 DAC W/amp I2S IF10 WM8520 DAC W/amp IF20 SN74LV C244AP W Woofer L Woofer R Speaker L Speaker R
Hitachi 50VS69A, III. ASSEMBLED P.W.B. ADJUSTMENT 2-9 Color Uniformity (White Uniformity) COLOR UNIFORMITY data should not be adjusted. This data are adjusted by the factory and MEMORY INITialize cannot erase these data. If and only if the customer request to change the color uniformity, follow the instruction below. (1) Heat run for 10 minutes or more after power on. The four white signals generated from the internal IC (3) Change only the step that are requested to change. The screen is divided in 25 spaces. It can adjust for 4 different luminance levels. These data is linearly interpolated on scree
Final ASSEMBLY ADJUSTMENT 2-11 LAMP DOOR PROTECTION OPERATION CHECK Adjustment procedure (1) Remove Lamp door and turn the set on. (2) Check that the lamp does not light and “Lamp indicator” flash red. (3) Turn the set off and attach Lamp cover again 2-12 LAMP HOLDER PROTECTION OPERATION CHECK Adjustment procedure (1) Remove L
Hitachi 50VS69A, PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFET Y NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. • All DC voltage to be measured with a tester (100 kΩ/V). Voltage taken on a complex color bar including a standard color bar signal. • Since this is a basic circuit diagram, the value of the parts is subject to be altere
2-3 RASTER POSITION ADJUSTMENT (1) Receive a static and symmetric image (Circle pattern signal). (2) Recall Adjustment menu. (3) Select ‘V POSITION’ by using the cursor stick (▲/▼ direction) on handset. Adjust the vertical picture position where |E-F| <= 3mm by using the cursor stick ( direction). (4) Select ‘H POSITION’ by using the
Hitachi 50VS69A, PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFET Y NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. • All DC voltage to be measured with a tester (100 kΩ/V). Voltage taken on a complex color bar including a standard color bar signal. • Since this is a basic circuit diagram, the value of the parts is subject to
Hitachi 50VS69A, QUICK DISASSEMBLE GUIDE (Screen Frame Assy, Mirror Cover Assy) 62 LC67 Ԙ Screw T1T 4*25 P#MJ03589(6 pcs.) ԙ Screw T2V 4*16 P#MJ03442(17 pcs.) Ԛ Screw T1T 4*25 P#MJ03589(6 pcs.) ԛ Screw T1T 4*25 P#MJ03589(4 pcs.)
Hitachi 50VS69A, PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. LC67 SYMBOL PART No. DESCRIPTION LC67 SYMBOL PART No. DESCRIPTION LC67 RT87 0790051R RES.CHIP 1/16W 10K OHM 0 CW17 0893179R CAP.CHIP-CERAMIC 100000PF 16V TAPE 0 RT88 0790041R RES.CHIP 1/16W 1.8K OHM 0 CW18 0893193R CAP 1608CHIP 100
Hitachi 50VS69A, Digital Main P.W.B has five LED on board. After Power ON these LED will be turned on in sequence. It may take a few seconds for the sequence. TROUBLE SHOOTING for DIGITAL MODULE (Device error check) TABLE OF CONTENTS TROUBLESHOOTING FLOW CHARTS LC67 After Program is loaded without error, all LED will be turned off. Any LED should not light. If some errors occur, LED will show the error pattern. (1) Check that LED is not lit. (2) If LED is lit, refer to the following table and check the involved devices. Location of LEDs Digital Main Board LED5 (D205) LE
Hitachi 50VS69A, Information for service about lead-free solder Introduction Hitachi introduced lead-free solder to conserve the "Earth Environment". Please refer to the following before servicing. (1) Characteristic of lead-free solder Melting point of lead free solder is 40-50 o C higher than solder containing lead. (2) Solder for service Following composition is recommended. " Sn - 3.0Ag - 0.5Cu " , or " Sn - 0.7 Cu " Lead solder can be used, but there is a possibility of failure due to insufficient strength of the solder. Caution when using solder containing lead. Please remove previous solder as much as po
Hitachi 50VS69A, 24 LC67 (5) PIP Position Operation (Note) ・ The Sub screen position of POP Mode moves up and down by the upper and lower sides Key. ・ A Sub screen position of PIP Mode moves clockwise direction by the upper and lower sides Key. Key Key Key Key Key Key Key Key Key Key Display Specifications (cont...)
Hitachi 50VS69A, IT02 Pin 41 MPEG-DATA 0 1 2 3 4 5 6 7 11 IT02 Pin 66 MPEG_PKT_SYNC 10 IT02 Pin 63 MPEG_DATA EN TABLE OF CONTENTS 4.0 V SUB PWB QAM/VSB DEMODULATOR click here to go to circuit diagram using a Color Bar signal with H sync 31 khz and V. sync 60 hz and a X10 probe. Numbers inside circle correspond to locations shown in the circuit diagram. Waveforms taken Signal amplitude and DC level shown at and @ respectively. ∆ LC67 4.0 V 4.0 V 4.0 V 4.0 V 4.0 V 4.0 V 4.0 V 4.0 V IT02 Pin 42 MPEG-DATA 1 IT02 Pin 47 MPEG-DATA 2 IT02 Pin 48 MPEG-DATA 3 IT02 Pin 50 MPEG-DATA 4 IT02 Pin 51 MPEG-CLK 8 9 5 I
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