This Service Manual is for the LH7-M32BB (A93F0FP) / LH7-M32BB (A93F2EP) model. For the LH7-M32BB (A93F0FP) / LH7-M32BB (A93F2EP) model, the letter (A93F0FP) / (A93F2EP) is printed on the Serial Number Label on the back of the unit. Refer to the Serial Number Label below.
IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
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4. Hot Chassis Warning - 7. Product Safety Notice - Some electrical and mechanical parts have special safety-related a. Some TV receiver chassis are electrically characteristics which are often not evident from connected directly to one conductor of the AC visual inspection, nor can the protection they give power cord and maybe safety-serviced without necessarily be obtained by replacing them with...
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Precautions during Servicing A. Parts identified by the ! symbol are critical for safety. Replace only with part number specified. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements.
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Safety Check after Servicing Examine the area surrounding the repaired location Chassis or Secondary Conductor for damage or deterioration. Observe that screws, parts and wires have been returned to original posi- tions. Afterwards, perform the following tests and con- Primary Circuit firm the specified values in order to verify compliance with safety standards.
STANDARD NOTES FOR SERVICING Circuit Board Indications How to Remove / Install Flat Pack-IC 1. The output pin of the 3 pin Regulator ICs is 1. Removal indicated as shown. With Hot-Air Flat Pack-IC Desoldering Machine: 1. Prepare the hot-air flat pack-IC desoldering Top View Bottom View machine, then apply hot air to the Flat Pack-IC...
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With Soldering Iron: With Iron Wire: 1. Using desoldering braid, remove the solder from 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, flux which is applied to all pins of the flat pack-IC, you can remove it easily.
2. Installation Instructions for Handling Semi- 1. Using desoldering braid, remove the solder from conductors the foil of each pin of the flat pack-IC on the CBA Electrostatic breakdown of the semi-conductors may so you can install a replacement flat pack-IC more occur due to a potential difference caused by easily.
CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart Removal Step/ Remove/*Unhook/ This flowchart indicates the disassembly steps for the Loc. Part Fig. Unlock/Release/ cabinet parts, and the CBA in order to gain access to Note Unplug/Unclamp/ item(s) to be serviced. When reassembling, follow the Desolder steps in reverse order.
ELECTRICAL ADJUSTMENT INSTRUCTIONS 1. Purity Check Mode General Note: “CBA” is abbreviation for “Circuit Board Assembly.” This mode cycles through full-screen displays of red, Note: Electrical adjustments are required after green, blue, and white to check for non-active pixels. replacing circuit components and certain 1.
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2. VCOM Adjustment. 4. Auto Calibration [PC] Purpose: To bring the color adjustment of PC into Test Point Adj. Point standard alignment. Screen Symptom of Misadjustment: If this adjustment is buttons incorrect, PC signals do not reproduce the M. EQ. Spec.
The following adjustment normally are not attempted in 4. Enter the Service mode. Press [ -] button on the the field. Only when replacing the LCD Panel then adjust service remote control unit and select “C/D” mode. as a preparation. 5.
HOW TO INITIALIZE THE LCD TELEVISION How to initialize the LCD television: 1. Turn the power on. 2. To enter the service mode, press the service button on the service remote control unit. (Refer to page 5-1.) - To cancel the service mode, Press [ ] button on the remote control unit.
TROUBLESHOOTING FLOW CHART NO.1 The power cannot be turned on. See FLOW CHART No.2 <The fuse blows out.> Is the fuse (F601) normal? Check if there is any leak or short-circuiting on the primary circuit component, and service it if defective. (IC607, Q601, Q602, D609, D610, D611, D612, T601, R601) Is the P-ON+5V line voltage normal?
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FLOW CHART NO.5 INV+16V is not output. Check D504, D505, C503 and their periphery circuit, and service it defective. Check D506, D507 and their periphery circuit, and service it defective. FLOW CHART NO.6 AL+3.3V is not output. Is approximately 7V voltage supplied to the collector Check D525, C516 and their periphery circuit, and of Q521? service it if defective.
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FLOW CHART NO.8 LCD+24V is not output. Is approximately 36V voltage supplied to the cathode of D514? Is approximately 36V voltage outputted to the collector of Q504? Is approximately 24V voltage supplied to the emitter of Q405? Check Q404, Q405 and their periphery circuit, and service it if defective.
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FLOW CHART NO.11 AL+5V is not output. Check if there is any leak or short-circuit on the loaded circuit, and service it if defective. FLOW CHART NO.12 P-ON+3.3V is not output. Replace Q510. FLOW CHART NO.13 P-ON+9V is not output. Is approximately 10V voltage supplied to the base of Q517? Replace Q517.
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FLOW CHART NO.15 No operation is possible from the remote control unit. Check AL+3.3V line and service it if defective. Replace the RS102 (remote control receiver) or remote control unit. Check the line between Pin(1) of RS102 (remote control receiver) and Pin(13) of CN403, and service it if defective.
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FLOW CHART NO.17 Picture does not appear normally. Check the line between Pin(16, 18) of CN403 and Are the DIF signals outputted to Pin(16, 18) of CN403? Pin(4, 5) of TU1, and TU1(Tuner Unit), and service it if defective. Replace Digital Main CBA Unit or LCD Module Assembly.
SCHEMATIC DIAGRAMS / CBA AND TEST POINTS Standard Notes WARNING Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc.
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LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. 2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply.
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Power Supply 1/3 Schematic Diagram CAUTION ! NOTE: CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. The voltage for parts in hot circuit is measured using For continued protection against fire hazard, If Main Fuse (F601) is blown , check to see that all components in the power supply hot GND as a common terminal.
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Power Supply 2/3 Schematic Diagram A93F0SCP2...
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Power Supply 3/3 Schematic Diagram A93F0SCP4...
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Inverter Schematic Diagram NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal. A93F0SCINV...
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IR Sensor, Function & Junction Schematic Diagram A93F0SCIRF...
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Digital Main 1/7 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3301. IC3301 is divided into six and shown as IC3301 (1/6) ~ IC3301 (6/6) in this Digital Main Schematic Diagram Section. A93F0SCD1...
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Digital Main 2/7 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3301. IC3301 is divided into six and shown as IC3301 (1/6) ~ IC3301 (6/6) in this Digital Main Schematic Diagram Section. A93F0SCD2...
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Digital Main 3/7 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3301. IC3301 is divided into six and shown as IC3301 (1/6) ~ IC3301 (6/6) in this Digital Main Schematic Diagram Section. 9-10 A93F0SCD3...
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Digital Main 4/7 Schematic Diagram 9-11 A93F0SCD4...
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Digital Main 5/7 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3301. IC3301 is divided into six and shown as IC3301 (1/6) ~ IC3301 (6/6) in this Digital Main Schematic Diagram Section. 9-12 A93F0SCD5...
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Digital Main 6/7 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3301. IC3301 is divided into six and shown as IC3301 (1/6) ~ IC3301 (6/6) in this Digital Main Schematic Diagram Section. 9-13 A93F0SCD6...
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Digital Main 7/7 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3301. IC3301 is divided into six and shown as IC3301 (1/6) ~ IC3301 (6/6) in this Digital Main Schematic Diagram Section. 9-14 A93F0SCD7...
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Power Supply CBA Top View Because a hot chassis ground is present in the power CAUTION ! NOTE: supply circut, an isolation transformer must be used. Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. The voltage for parts in hot circuit is measured using Also, in order to have the ability to increase the input If Main Fuse (F601) is blown , check to see that all components in the power supply...
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Power Supply CBA Bottom View Because a hot chassis ground is present in the power CAUTION ! NOTE: supply circut, an isolation transformer must be used. Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. The voltage for parts in hot circuit is measured using Also, in order to have the ability to increase the input If Main Fuse (F601) is blown , check to see that all components in the power supply...
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Inverter CBA Top View Because a hot chassis ground is present in the power NOTE: supply circuit, an isolation transformer must be used. The voltage for parts in hot circuit is measured using Also, in order to have the ability to increase the input hot GND as a common terminal.
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Inverter CBA Bottom View Because a hot chassis ground is present in the power NOTE: supply circuit, an isolation transformer must be used. The voltage for parts in hot circuit is measured using Also, in order to have the ability to increase the input hot GND as a common terminal.
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Function CBA Top View Function CBA Bottom View 9-19 BA93F0F01021B...
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IR Sensor CBA Top View Junction CBA Junction CBA Top View Bottom View BA93F0F01021 IR Sensor CBA Bottom View BA93F0F01021C 9-20...
WAVEFORMS WF1 ~ WF6 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: PAL Color Bar Signal (with 1kHz Audio Signal) Pin 2 of CN404 Pin 4 of CN404 20µs VIDEO-Y 0.2V 20µs VIDEO 0.2V 20µs Pin 27 of CN401 Pin 6 of CN404...
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WF7 ~ WF10 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: PAL Color Bar Signal (with 1kHz Audio Signal) Pin 22 of CN401 Pin 26 of CN404 WF10 AUDIO(L) 0.5V 0.5ms VIDEO-R 0.5V 20µs Pin 29 of CN404 VIDEO-B 0.5V...
EXPLODED VIEWS Cabinet Inverter CBA CL802 CL600 SP802 Function CBA CL102A Junction CBA CL103A IR Sensor CBA CL801 CL1003 Power Supply CBA SP801 LCD1 CL3901 CL401 See Electrical Parts List for parts with this mark. CL404 CL403 Stand Assembly AC601 CL402 Digital Main CBA Unit X3301...
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Packing Comparison Chart of Models and Marks Model Mark LH7-M32BB(A93F0FP) LH7-M32BB(A93F2EP) Stand Some Ref. Numbers are Assembly not in sequence. Packing Tape [ B ] X2-2 X2-1 X2-3 X6 Tape Packing Tape Tape Packing Tape 12-2 A93F0PEX...
Comparison Chart of Models and Marks C307 CHIP CERAMIC CAP .(1608) CH J 33pF/50V CHD1JJ3CH330 Model Mark C308 CHIP CERAMIC CAP .(1608) CH J 33pF/50V CHD1JJ3CH330 LH7-M32BB(A93F0FP) C309 CHIP CERAMIC CAP .(1608) CH J 33pF/50V CHD1JJ3CH330 LH7-M32BB(A93F2EP) C310 ELECTROLYTIC CAP . 470µF/10V M CE1AMASDL471 C311 CHIP CERAMIC CAP .(1608) CH J 33pF/50V...
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Ref. No. Description Part No. Ref. No. Description Part No. ELECTROLYTIC CAP 220µF/50V M CE1JMZPDL221 C825 ELECTROLYTIC CAP . 10µF/50V M CE1JMASDL100 C513 ELECTROLYTIC CAP . 10µF/50V M CE1JMASDL100 C826 ELECTROLYTIC CAP . 3.3µF/50V M CE1JMASDL3R3 C514 ELECTROLYTIC CAP . 220µF/16V M CE1CMASDL221 C827 CHIP CERAMIC CAP .(1608) B K 0.1µF/50V...
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Ref. No. Description Part No. Ref. No. Description Part No. D325 DIODE ZENER 5V6BSB-T26 NDTB5R6BST26 D529 DIODE ZENER 5V6BSB-T26 NDTB5R6BST26 D326 DIODE ZENER 5V6BSB-T26 NDTB5R6BST26 D530 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 D401 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 DIODE SWITCHING HSS4148TE-E or QDTZ0HSS4148 DIODE SWITCHING HSS4148TE-E or QDTZ0HSS4148...
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Ref. No. Description Part No. Ref. No. Description Part No. D803 DIODE ZENER 18BSB-T26 NDTB018BST26 TRANSISTOR KTA-1266-GR-AT/P or NQS4KTA1266P D804 DIODE ZENER 18BSB-T26 NDTB018BST26 TRANSISTOR 2SA1015-Y(TE2 F T) or QQSY2SA1015F D805 DIODE ZENER 18BSB-T26 NDTB018BST26 TRANSISTOR 2SA1015-GR(TE2 F T) or QQS12SA1015F D806 DIODE ZENER 18BSB-T26...
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Ref. No. Description Part No. Ref. No. Description Part No. NPN TRANSISTOR 2SC5343Y-AT or NQSY02SC5343 TRANSISTOR KTC3199-GR-AT/P or NQS4KTC3199P NPN TRANSISTOR 2SC5343G-AT or NQSG02SC5343 TRANSISTOR KTC3198-GR-AT/P or NQS4KTC3198P NPN TRANSISTOR 2SC5343MG-AT or NQSG2SC5343M TRANSISTOR 2SC1815-Y(TE2 F T) or QQSY2SC1815F NPN TRANSISTOR 2SC5343M Y NQSY2SC5343M TRANSISTOR 2SC1815-GR(TE2 F T) or QQS12SC1815F...
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Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W 0 Ω or RESISTORS R219 RRXAZR5Z0000 RES CHIP 1608 1/10W J 0 Ω CHIP RES. 1/10W J 100 Ω or RRXA000YF002 RRXAJR5Z0101 CHIP RES.(1608) 1/10W 0 Ω or RES CHIP 1608 1/10W J 100 Ω...
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Ref. No. Description Part No. Ref. No. Description Part No. RES CHIP 1608 1/10W J 2.2k Ω CHIP RES.(1608) 1/10W F 3.3k Ω or RRXA222YF002 RRXAFR5Z3301 CHIP RES. 1/10W J 100 Ω or RES CHIP 1608 1/10W F 3.30k Ω R332 RRXAJR5Z0101 RTW3301YF002...
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Ref. No. Description Part No. Ref. No. Description Part No. RES CARBON FILM 1/4W J 3.3k Ω or RES CARBON FILM T 1/4W J 820k Ω R559 RCX4332FS002 RCX4824T1001 RES CARBON FILM T 1/4W J 3.3k Ω RES CARBON FILM 1/4W J 820k Ω or RCX4332T1001 R624 RCX4824FS002...
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INVERTER CBA Ref. No. Description Part No. JK205 JACK SW RCA PCB S RED RCA-102H(RD) or JYRJ010YUQ03 Ref. No. Description Part No. JACK SW RCA PCB S(RED) 01 MTJ-032-04A- JYRJ010LY031 INVERTER CBA ---------- 75 FE Consists of the following: JK206 JACK HPEP SML PCB S PJ-358H or JXSJ020YUQ01 CAPACITORS...
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Ref. No. Description Part No. Ref. No. Description Part No. CAP CERAMIC HV 15pF/6.3KV/SL/J CCA1500MR002 WIRE COPPER JP0.6MM XZ40C0AKM001 C1216 CAP CERAMIC (AX) 1500pF/50V/B/K CA1J152TU061 D1005 WIRE COPPER 6111-06003-0120 or XZ40C0SHG002 C1217 ELECTROLYTIC CAP . 10µF/50V M CE1JMASDL100 WIRE COPPER JP0.6MM XZ40C0AKM001 C1218 CHIP CERAMIC CAP .(1608) B K 0.01µF/50V...
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Ref. No. Description Part No. Ref. No. Description Part No. DIODE SWITCHING 1N4148-F0021 NDTZ01N4148F D1171 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 D1114 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 DIODE SWITCHING HSS4148TE-E or QDTZ0HSS4148 DIODE SWITCHING HSS4148TE-E or QDTZ0HSS4148 DIODE SWITCHING 1N4148-F0021 NDTZ01N4148F DIODE SWITCHING 1N4148-F0021 NDTZ01N4148F D1172...
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Ref. No. Description Part No. Ref. No. Description Part No. DIODE SWITCHING 1N4148-F0021 NDTZ01N4148F TRANSISTOR KTC3199-GR-AT/P or NQS4KTC3199P D1702 SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 TRANSISTOR KTC3198-GR-AT/P or NQS4KTC3198P DIODE SWITCHING HSS4148TE-E or QDTZ0HSS4148 TRANSISTOR 2SC1815-Y(TE2 F T) or QQSY2SC1815F DIODE SWITCHING 1N4148-F0021 NDTZ01N4148F TRANSISTOR 2SC1815-GR(TE2 F T) or QQS12SC1815F...
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Ref. No. Description Part No. Ref. No. Description Part No. NPN TRANSISTOR 2SC5343Y-AT or NQSY02SC5343 NPN TRANSISTOR 2SC5343M Y NQSY2SC5343M NPN TRANSISTOR 2SC5343G-AT or NQSG02SC5343 Q1621 TRANSISTOR KTC3198-Y-AT/P or NQSYKTC3198P NPN TRANSISTOR 2SC5343MG-AT or NQSG2SC5343M TRANSISTOR KTC3199-GR-AT/P or NQS4KTC3199P NPN TRANSISTOR 2SC5343M Y NQSY2SC5343M TRANSISTOR KTC3198-GR-AT/P or NQS4KTC3198P...
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Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 10k Ω or NPN TRANSISTOR 2SC5343G-AT or NQSG02SC5343 R1017 RRXAJR5Z0103 RES CHIP 1608 1/10W J 10k Ω NPN TRANSISTOR 2SC5343MG-AT or NQSG2SC5343M RRXA103YF002 RES CARBON FILM 1/4W J 1.2k Ω or NPN TRANSISTOR 2SC5343M Y NQSY2SC5343M R1018...
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Ref. No. Description Part No. Ref. No. Description Part No. RES CHIP 1608 1/10W F 18.0k Ω CHIP RES.(1608) 1/10W F 8.2k Ω or RTW1802YF002 RRXAFR5Z8201 CHIP RES. 1/10W F 8.2k Ω or RES CHIP 1608 1/10W F 8.20k Ω R1070 RRXAFR5H8201 RTW8201YF002...
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Ref. No. Description Part No. Ref. No. Description Part No. RES CHIP 1608 1/10W J 10k Ω RES CARBON FILM T 1/4W J 300k Ω RRXA103YF002 RCX4304T1001 CHIP RES. 1/10W J 100k Ω or RES CARBON FILM 1/4W J 270k Ω or R1620 RRXAJR5Z0104 R1945...
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JUNCTION CBA Ref. No. Description Part No. T1200! TRANS INV ETJV23ZF2WAC or LTZ3PZ0MS005 Ref. No. Description Part No. TRANS INVERTER HVT-153 or LTZ3PZ0XB009 JUNCTION CBA ---------- TRANS INVERTER TK.7609A.101 LTZ3PZDAR007 Consists of the following: T1950! TRANS POWER BCK-35-0655 or LTT3PE0XB051 CONNECTOR TRANS POWER 9711 LTT3PE0KT060...