Service manual

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AS
FILE NO.
SERVICE MANUAL Remote Control Digital
Color Television
HT32744 (U.S.A.)
(CANADA)
ORIGINAL VERSION
Chassis No. 32744-00
NOTE: Match the Chassis No. on 
the unit’s back cover with 
the Chassis No. in the
Service Manual.
If the Original Version
Service Manual Chassis
No. does not match the
unit’s, additional Service
Literature is required. You
must refer to “Notices” to the
Original Service Manual
prior to servicing the unit.
Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments. . . . . . . . . . . . . 3 - 17
Service Hints. . . . . . . . . . . . . . . . . . . . . . 18
Mechanical Disassemblies. . . . . . . . . . . 19
Chassis Electrical Parts List . . . . . . 20 - 40
Cabinet Parts List . . . . . . . . . . . . . . . . . . 41
Component and Test Point
Locations . . . . . . . . . . . . . . . . . . . 42 - 49
Block Diagrams . . . . . . . . . . . . . . . . 50 - 55
Troubleshooting Flow Charts . . . . . 56 – 58
Control Port Function . . . . . . . . . . . . . . . 59
Schematic Inserts . . . . . . . . . . . . . . 61 – 76
Schematic Notes . . . . . . . . . . . . . . . . . 61
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 61
Capacitor and Resistor Codes . . . . . . 61
Board Connections & Locations. 62 – 64
Waveforms. . . . . . . . . . . . . . . . . . 62 – 64
Main Board. . . . . . . . . . . . . . . . . . 65 – 68
A/V Select and Video Boards . . . 69 – 72
VM Board. . . . . . . . . . . . . . . . . . . . . . . 73
CRT Socket Board . . . . . . . . . . . . . . . . 73
Power and Deflection Board. . . . 74 – 76
Front Board . . . . . . . . . . . . . . . . . 74 – 75
Specifications
Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
140W (Avg), 2.5A (Max)
Antenna Input Impedance. . . . . . . . . . . . . . . . . 75Ω
UHF/VHF/CATV
Digital
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
14 - 69 (UHF),
01, 14 - 94, 95 - 125 (CATV)
1 - 99 (Digital)
Remote Ready . . . . . . . . . . 52 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 5.0 W/CH
Intermediate Frequency
Picture IF Carrier. . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Picture Tube. . . . . . . . . . . . . . . . . . . A80ERF082X44
Semiconductors
Integrated Circuits . . . . . . . . . . . . . . . . . . . . . . . 40
Transistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Except within Tuner, RC Pre-Amp. & Digital Module
Cabinet Dimensions
Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 888 mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 687 mm
Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 570 mm
REFERENCE No. SM780095
HT32744, H3ELM, PRODUCT CODE 111369990
A
S

Summary of content (64 pages)

PAGE 1
AS FILE NO. SERVICE MANUAL Remote Control Digital Color Television HT32744 (U.S.A.) (CANADA) ORIGINAL VERSION Chassis No. 32744-00 NOTE: Match the Chassis No. on the unit’s back cover with the Chassis No. in the Service Manual. If the Original Version Service Manual Chassis No. does not match the unit’s, additional Service Literature is required. You must refer to “Notices” to the Original Service Manual prior to servicing the unit. AS Contents Specifications Safety Instructions . . . . . . . . .
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SAFETY INSTRUCTIONS SAFETY PRECAUTIONS WARNING: The chassis of this receiver has a floating ground with the potential of one half the AC line voltage in respect to earth ground. Service should not be attempted by anyone not familiar with the precautions necessary when working on this type of equipment. READING SHOULD NOT EXCEED 750 mV. AC VOLTMETER (5000 ohms per volt or more sensitivity) The following precautions must be observed: 1.
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SERVICE ADJUSTMENTS GENERAL This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments. ON-SCREEN SERVICE MENU SYSTEM 1. Enter the Service Menu: • While pressing the – VOLUME key on the front control panel, reconnect the AC power cord. The Service Menu Display will now appear. The remote can now be used to make adjustments. See Figure 1. 2.
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SERVICE ADJUSTMENTS (Cont.) INITIAL BUS DATA SETUP (Cont.) 15. 16 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. Select NO. 117 VPS (V Position) with ▲ or ▼ key. Adjust the data with number keys for 64. Select NO. 119 HSI2UUC (H Size / Up UCP) with ▲ or ▼ key. Adjust the data with number keys for 48. Select NO.
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Table 1. ON-SCREEN SERVICE MENU When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be checked and be set up or readjusted according to the procedures described in the following pages. Initial Setup Data marked with an * should be changed from Initial Reference Data. (See pages 3 and 4 for Initial Bus Data Setup.) No.
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SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) No.
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No.
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SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) No.
PAGE 9
TITLE INITIAL REFERENCE DATA HEX INITIAL SETUP DATA HEX INITIAL SETUP DATA BINARY 1CD CFHSI 00 00 00000000 VIDEO1/2-FULL H_SIZE 1CE CFHPO 00 00 00000000 VIDEO1/2-FULL H_POSITION No.
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SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) No.
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TITLE INITIAL REFERENCE DATA HEX INITIAL SETUP DATA HEX INITIAL SETUP DATA BINARY 236 RZVAS 00 00 00000000 RF-ZOOM V_ASPECT 237 RZZSW 00 00 00000000 RF-ZOOM ZOOM_SW 238 RZVSR 00 00 00000000 RF-ZOOM V_SCROLL 239 239 00 00 00000000 RF PRELIMINARY 23A CZVS 00 00 00000000 VIDEO1/2-ZOOM V_SIZE No.
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SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) No.
PAGE 13
No.
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SERVICE ADJUSTMENTS (Continued) ANTENNA CONNECTIONS VERTICAL SIZE ADJUSTMENT This receiver is designed for UHF/VHF and Digital RF reception. A 75 ohm terminal is provided for UHF/VHF reception and a separate 75 ohm terminal is provided for Digital RF reception. When connecting a CATV antenna system, connect the 75 ohm coaxial cable directly to the 75 ohm UHF/VHF terminal. For 300 ohm VHF antenna, use an adapter (not included with the TV set). CIRCUIT PROTECTION Fuse F601 (4A) is included in the AC line.
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Drive Level Adjustment 13. Select “Drive Level Adjustment” Menu (between NO. 08E and NO. 0B0) with ▲ or ▼ key. The Menu display will appear. 14. Adjust Red and Blue Drive Levels alternately with 1, 3, 7, or 9 key to produce normal black and white picture in highlight areas. The Drive Level adjustment data will be written in the Service Menu No. 106 and 108 automatically. (See Figure 3.) 2 3 RD(–) (N/A) RD(+) 4 5 6 (N/A) (N/A) (N/A) 1 7 8 9 BD(–) (N/A) BD(+) 7.
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SERVICE ADJUSTMENTS (Continued) HIGH VOLTAGE HOLD-DOWN TEST MULTI-SOUND SECTION ADJUSTMENTS Every time the receiver is serviced, the HIGH VOLTAGE HOLD-DOWN circuit must be tested for proper operation by following these steps: 1. Connect receiver to 120V AC line. Tune receiver to active channel. Reset the picture controls to the Sports level. 2. Check that the voltage measured between TP7 and TE7 (ground side) on the P/D PC board is within 20 VDC to 24 VDC.
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PINCUSHION CORRECTION ADJUSTMENT OSD ADJUSTMENT 1. Connect a color-bar generator to the analog antenna terminal and select a crosshatch pattern. 2. Set the picture controls to the Sports level. 3. Turn off the receiver and disconnect the AC power cord (AC 120V line). 4. While pressing the VOLUME – key, reconnect the AC power cord. The Service Menu will now appear. 5. Select the items below with ▲ or ▼ key according to the symptoms of Figure 8. NO.
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SERVICE HINTS POWER FAILURE DETECTOR This unit is equipped with a Power Failure Detector function included in the CPU which checks for an abnormal condition in the chassis power supplies, including the power supply derived from the Horizontal Output Transformer. If, while the power is on, a failure is caused by any of the following that results in a low voltage supply, the CPU will turn the unit off in 1.5 seconds to prevent further damage: • Failure within the power supply circuits.
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MECHANICAL DISASSEMBLIES CABINET BACK REMOVAL CHASSIS REMOVAL 1. Refer to Figure 1, remove 13 screws. 2. Pull off cabinet back and remove. 1. Remove cabinet back. 2. Discharge the picture tube anode (2nd anode lead) to the dag coating (picture tube grounding lead). 3. Disconnect degaussing coil socket (KD), picture tube socket, deflection yoke connector (KX), speakers connector (KSP), picture tube ground leads (2), velocity modulation coil connector (K17A) and 2nd anode lead. 4.
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CHASSIS ELECTRICAL PARTS LIST CAUTION: To Protect against electrical shock and for continued product safety, refer to SAFETY PRECAUTIONS, X-RADIATION PRECAUTIONS, HIGH VOLTAGE HOLD-DOWN TEST, and PRODUCT SAFETY NOTICE on Page 2. PRODUCT SAFETY NOTICE PRODUCT SAFETY SHOULD BE CONSIDERED WHEN A REPLACEMENT IS MADE IN ANY AREA OF A RECEIVER. COMPONENTS INDICATED BY A STAR (★) IN THIS PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNIFICANCE.
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Schematic Location Part No.
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Schematic Location Part No.
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Schematic Location Description Part No. Schematic Location COILS L001 L101 L651 L652 L653 L654 L661 L801 L802 L803 L804 L811 L837 L1851 645 008 2894 645 016 3104 645 008 2894 645 016 3104 645 045 9436 645 049 3751 645 047 6655 645 047 6655 645 049 3751 645 008 2894 645 016 3104 645 008 2894 645 016 3104 645 008 2894 645 016 3104 645 008 2894 645 016 3104 645 006 2490 645 016 2411 645 006 2490 645 016 2411 645 008 2894 645 016 3104 Q1293 INDUCTOR, 5.6U K INDUCTOR, 5.6U K INDUCTOR, 5.6U K INDUCTOR, 5.
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Schematic Location Part No. Q2910 (Cont.
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Schematic Location R833 R834 R835 R836 R837 R838 R839 R840 R841 R842 R843 R844 R845 R846 R849 R851 R852 R853 R854 R855 R856 R866 R876 R880 R881 R883 R886 R887 R894 R895 R896 R897 R898 R899 R1262 R1263 R1264 R1265 R1266 R1267 R1268 R1269 R1270 R1271 R1272 R1279 R1280 R1281 R1282 R1283 R1284 R1285 R1286 R1287 R1288 R1289 R1290 R1291 R1294 R1295 Part No.
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Schematic Location Part No.
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Schematic Location C622 C624 C625 C626 C628A C629 ★ C633 ★ C635 C640 C641 C642 C644 C656 C686 Part No.
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Schematic Location Part No.
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Schematic Location Part No. Schematic Location Description Q001 CAPACITORS 404 084 3900 404 084 4204 404 089 2700 403 073 8308 403 073 8308 404 089 4100 404 089 4100 404 084 3900 404 084 3405 403 076 4000 404 096 0706 403 075 7101 403 075 7101 404 096 0508 404 084 2804 403 069 8305 404 095 1704 403 069 8305 404 084 2606 403 069 8305 403 069 8305 404 084 2705 404 084 2408 ELECT 10U M ELECT 4.
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Schematic Location SW1904 SW1905 Part No.
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Schematic Location Part No.
PAGE 32
Schematic Location Q1223 Q1224 Q1232 Q1233 Q1234 Q7010 Q7011 Part No.
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Schematic Location Q7030 Q7031 Q7032 Q7033 Q7034 Q7035 Q7036 Part No.
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Schematic Location Q8234 Q8235 Q8236 Q8237 Q8238 Q8239 Q8240 Part No.
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Schematic Location R7010 R7011 R7012 R7013 R7014 R7015 R7016 R7017 R7018 R7019 R7020 R7021 R7022 R7023 R7024 R7025 R7026 R7027 R7028 R7029 R7030 R7031 R7032 R7033 R7034 R7035 R7036 R7037 R7038 R7039 R7040 R7041 R7042 R7043 R7044 R7045 R7046 R7047 R7048 R7100 R7101 R7102 R7103 R7106 R7107 R7108 R7111 R7112 R7113 R8201 R8202 R8203 R8205 R8206 R8208 R8209 R8210 R8211 R8212 R8213 Part No.
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Schematic Location C2330 C2331 C2332 C2333 C2334 C2336 C2339 C2341 C2342 C2343 C2344 C2345 C2346 C2372 C2373 ★ C2380 C2500 C2501 C2502 C2503 C2503B C2503R C2505 C2506 C2507 C2508 C2509 C2510 C2511 C2512 C2513 C2515 C2521 C2522 C2523 C2524 C2525 C2526 C2527 C2530 C2531 C2532 C2533 C2534 C2535 C2536 C2537 C2538 C2539 C2543 C2544 Part No.
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Schematic Location Q2333 Q2501 Q2502 Q2503 Q2504 Q2505 Part No.
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Schematic Location R2348 R2349 R2350 R2352 R2353 R2354 R2355 R2356 R2357 R2358 R2360 R2361 R2362 R2363 R2364 R2365 R2367 R2368 R2369 R2371 ★ R2380 R2382 R2503 R2506 R2507 R2508 R2510 R2511 R2512 R2513 R2514 R2516 R2517 R2520 R2522 R2523 R2525 R2527 R2538 R2543 R2544 R2545 R2546 R2547 R2548 R2560 R2561 R2562 R2616 R2617 R2624 R2626 R2962 R2963 R2964 R2968 R2969 R2985 R2986 Part No.
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Schematic Location Part No.
PAGE 40
Schematic Location Part No.
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CABINET PARTS LIST 5 4 6 3 2 1 7 13 8 12 9 10 11 ACCESSORY PARTS LIST CABINET PARTS LIST KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 PARTS NO. 610 311 0110 610 268 9648 610 268 9662 412 053 3905 610 311 0134 412 064 4304 411 026 2303 610 313 2440 610 311 6402 610 311 9908 610 289 5148 610 311 9397 645 067 1333 610 313 4093 KEY NO.
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COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD PARTS SIDE J815 J3406 8 1 C865 J3403 D858 J821 J803 C3409 C3411 J804 R3414 J807 J813 J810 K6PDA C866 1 2 R826 L801 J1623 J841 5 1 REGULATORS C3631 C1275 J2907 J1634 J2820 J1221 IC663P1 J1230 J1222 J1231 J1223 J1232 5VIP J1228 4 K8VDA16 J1248 5VTV-PF J1249 J1237 R1271 1 C105 J113 R103 J2932 R106 TPV1 KSLR1 R101 J3410 R2934 R2926 R2935 1 2 JP2903 R666 C2825 C5507 R102 R2916 JWGS1 J3411 J1264 J115 K100
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AGND J687 C2807 R2807 20 C2811 16 C2810 J2819 C2812 J3620 C3629 C105 R107 C101 R103 GND DM_L GND C107 R101 R102 C5507 J3410 KCRTG J100 J3404 J116 J117 J118 IC661P1 1 8 42 1 40 30 IC801 10 4 IC803 4 IC663P1 5VIP IC662P1 7 1 J1810 J2931 J1811 C2940 R2942 R2945 R2940 JP2905 C2943 R2948 R2954 R2946 C2945 GND C2954 R2947 R2957 R2955 R2951 R2958 R2952 Q2950 C2956 R2959 R2931 C2902 C2950 R2960 JP2901 R2906 R2909 C1270 R2907 R2932 Q2902 C2904 JP2902
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COMPONENT AND TESTPOINT LOCATIONS (Cont.
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POWER / DEFLECTION BOARD FOIL SIDE IC601 3 J640 E 1 R641 R642 C632 2 X X K6L2P X R612 D619 K6GND3 L631 C628AH2 D620 X C628A C628AH1 J615 C620 R620 C609 J616 J620 22 L614 X 10 D627 D627H1 J607 L624 C609H1 C608 C609H2 C608A J637 J609 J608 1 J618 J619 C614 X J617 C685 T601H2 R604 C627 C619 3 R605 D613 J642 C641 21V AGND 14V_TV 14V_TV GND GND 14V_DM 14V_DM GND GND K6L1P X X 1 D614 X C632A X J647 R616 C642 D631 K6B2P K6B3P K6B1P C684 1 D612
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COMPONENT AND TESTPOINT LOCATIONS (Cont.
PAGE 47
SWDR GND U_OUT V_OUT AV3 _SW BPF _SW PFAIL SWD_Y2 GND SWD _YCAP 5V 14V Y_OUT GND HSYNC VSYNC SDA_AV GND SCL_AV DMR GND TVV GND DML GND TVL GND TVR GND SWDL R1017 AV3-R R1011 AV3-R-SW AV3-L C1008 C1009 AV3-R R8202 L8201 C8201 C8205 X8201 C8204 C8202 R8228 R1215 C1215 R8201 C8208 R8229 R1214 R1219 R1220 C1205 C1211 R1204 C1201 C1204 C1231 L1201 C1207 R1207 C1007 AV3-V D1008 R1206 C1004 AV2-V C1005 AV2-L D1005 D1009 D1006 D1007 D1004 R1228 R1205 R1209
PAGE 48
— 48 — GND GND HCOMP OSDB OSDG OSDR 1 R2337 C2339 R2338 C2545 R2369 K23VDA D2342 20 L2501 R2508 C2506 R2348 R2507 R2509 R2504 R2505 C2505 C2501 R2645 C2509 R2644 3 R2538 GND K25VM C2373 1 R2374 R2562 R2381 R2380 J2504 R2561 C2332 IC2502 E R2325 C2372 R2372 R2517 R2371 Q2371 R2379 C2327 C2380 R2340 C2301 R2302 J2503 R2306 R2305 J2301 R2617 R2624 C2324 R2616 J2302 R2319 R2324 C2330 R2328 R2327 C2302 R2303 C2510 R2318 R2326 X2301 C2507 R2359
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COMPONENT AND TESTPOINT LOCATIONS (Cont.
PAGE 50
AC120V 6A 125V — 50 — CRT Switching Oscillator IC602 F601 (CATHODE) Photo Coupler D612 Switching Transformer (T601) Switching Regulator 140V 22 HV 35V 21 900mA 100mA 1.5A 300mA 800mA 1.
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— 51 — 42pin (SCL) 40pin (SDA) 13pin (CS) 12pin (SIN) 11pin (SOUT) 10pin (SCLK) For DM 1pin (SCL) 41pin (SDA) For TV For NV 30pin (SCL) 31pin (SDA) For AV 4pin (CS) 3pin (SCLK) 2pin (SIN) 1pin (SOUT) 3 WIRES SERIAL NV (EEPROM) 24LC08B/P IC803 59pin (SCL) 60pin (SDA) AUDIO CONTROL NJW1142MP IC3401 14pin (SCL) 13pin (SDA) 3D Y/C uPD64083GFM IC7101 ATSC Decoder Scaler PIP (PAP) A900 Digital Module MTS DECODER CXA2104S IC3601 TU_IF FIFAM0160 A101 6pin (SCL) 5pin (SDA) 4pin (SCL) 3pin (SDA)
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AV1 TU-IF — 52 — TU-IF L/R MTS AV3 (Component) [ BUS ] V OR Y/C V OR Y/C CV L/R L/R L/R AV MM1313BD Y/C Y/C V AV_SELECTOR FIXED Y Y C CVIN CAPTION TA1318AF Y SYNC_SEP LA7217M Y (CV, Y/C Input) Y/U/V TC40528FP H/V NJM2268M 6dB_AMP NJM2534MP Y/U/V_SW Selected_H / V (AV3) Y/U/V (AV2: Component) Y/U/V SYNC_EXP CXA2019AQ (AV3) H/V (AV2: Component) H/V (CV, Y/C Input) H/V HS / VS [ BUS ] Y 1080i YP/VP/UP 2H/2V SPDIF L R (5W X 2) VIDEO OSD (With CAPTION) Selecte
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60 59 21 20 18 10 11 CR_IN SCL 19 22 23 SCP VTM VS_IN CERA AFC_FIL HS-IN F1 F0 SDA 52 CB_IN ECR_IN COUNT SCP AFC 61 8 2 REG Y • COLOR • HUE • CB_OFFSET • CR_OFFSET COL HUE Y R-Y G-Y B-Y B G 4 V-FUNC W-FUNC 64 1 • V_LIN • V_COMP • V_ON PIC CLP • H_POSITION • AFC_BOW • AFC_ANGLE • HBLK_SW YS YM • V_SCROLL • V_ASPECT • UP, LO_VLIN • JMP_SW • ZOOM_SW LOOP2 MAT R R2_IN B2_IN G2_IN YS YM CLP 0 to -9dB • PICTURE • SUB_CONT 7 • V_SIZE • V_POSITION • S_CORRECTION •
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19 15 SAPTC RMSDET VE 22 18 21 20 3 4 27 28 RMSDET VCA MATRIX 6 23 24 25 26 SPECTRAL 5 LPF 13 LPF HPF 12 SW AMP (+4dB) DeEm IIC BUS I/F "PONRES" "SAP" "NOISE" LPF IREF SAPIND NOISE DET SAPVCO LOGIC NRSW/FOMO/SAPC VGR NOISETC BPF WIDEBAND IREF 14 (+6dB) LPF DGND GND STIND DeEm VCA SCL ATT/INSW "STEREO" LPF 1/2 SDA 16 LPF FLT 1/4 7 SAPOUT Vcc VCA PCINT1 SAPIN 11 VCO PCINT STIN COMPIN PCINT2 LFLT SUBOUT 17 VETC 10 VEWGT 9 VEOUT 8
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IC3401 AUDIO CONTROL BLOCK DIAGRAM SR FIL 6 TONE TONE -Ha -La 7 8 OUTa LINEa 10 9 +4.5dB AGC 20 -2dB MONa 5 1 2 3 4 VOL 1 SEL VOL 1 SEL IICBUS Interface TONE 26 MONb 24 23 TONE TONE -Hb -Lb — 55 — 11 12 19 18 25 CVA CVB CTH CTL CSR VOL 2 Bias OUTb LINEb Vref -2dB 30 29 28 27 VOL 2 NJRC Surround "eala" & Simulated Stereo AGC IN1b IN2b IN3b IN4b TONE 13 SDA 14 SCL +4.
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TROUBLESHOOTING FLOW CHARTS NO POWER Is Fuse (F601) open? Yes Check: • PS601 (Posistor), D601, IC601, IC602 (Q402: H-out Tr) No Is the voltage of T681 supplied? No Check: • R601 (Rush Resistor) Yes Is the 39pin of IC801(CPU) output to "H" (+5V)? No Check: • "5V" Line (from IC1611 to IC801[22pin]), • Parts around IC801, IC802 (Reset), IC803(Memory) and X8219(Crystal) • Bus line (See "Block Diagram of Bus Line.") Yes Check: • "Power Fail" circuit. (Refer to "SERVICE HINTS.
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NO PICTURE All Modes? No Check: Line: Main to AV A101 (TU_IF) 17pin - IC1201 41pin Parts: TU_IF RF only Yes Check: Line: AV IC1201 1pin (Composite Video) IC1201 3pin (S-Input: Y) IC1201 5pin (S-Input: C) AV1 only Check: AV2 only Line: AV IC1201 7pin (Composite Video) IC1201 9pin (S-Input: Y) IC1201 11pin (S-Input: C) (Composite Video or S-Video) AV2 only (Component Video) AV3 only Check: Line: Main IC1263 3pin (Y), IC1262 3pin (U), IC1261 3pin (V), IC2801 24pin (Y for Sync) Check: Line: Main
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TROUBLE SHOOTING FLOW CHARTS (Cont.) NO SOUND Is there signal at speaker terminal? Yes Check: Speaker (SP901, SP902) No Is there signal at IC001 10pin (L) or 8pin (R)? Yes Check: Line: Front - Main (Mute) IC001 1pin - IC801 (CPU) 2pin Parts: IC001 (Audio AMP.
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CONTROL PORT FUNCTION System Control (CPU : IC801) Pin Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 P11/SCL1 P00 P01 P02 P03/AD1 P04/PWM4/AD2 P05/AD3 P06/INT2/AD4 P07/INT1 P20/SCLK//AD5 P21/SOUT/AD6 P22/SIN/AD7 P23/TIM3 P24/TIM2 P25/INT3 P26/XCIN P27/XCOUT CNVss Xin Xout Vss Vcc FILT HLF Vhold Cvin RESET Pullup P15 P31/SCL3 P30/SDA3 CLK/cont/P10 P55/OUT P54/R P53/G P52/B P51/Vsync P50/Hsync P16/AD8/TIM2 P14/SDA2 P13/SDA1 P22 Fun
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For parts or service contact SANYO Fisher Service Corporation 21605 Plummer Street Chatsworth, CA 91311 (U.S.A.) 300 Applewood Crescent, Concord, Ontario L4K 5C7 (CANADA) March / 2004 / 2000 SMC Printed in U.S.A.
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MODEL HT32744 Chassis No. 32744-00 P01 A1 K6GND KFRONT X W601 X KFRONT2 X + X ★ ASSY,PWB,FRONT (FOR SPARK) X 1 K1904 X ★ 3 4 DEGAUSSING COIL 4 1 1 20 REGULATORS 1 7 7 6 6 5 5 4 4 9 1 A 5 2 1 1 1 2 K 1 19 17 1 15 13 11 9 7 5 3 X 16 1 1 17 KSLR1 KSPG1 X FOCUS 4 3 1 2 (90 X 123.5) (140 X 123.
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C834 C855 CC4CGQ CJ56 CL R895 1K OSD_B R876 1K D654 HS PWR_SW SDA_TV R653 1/10GJ 1.2KC R842 1/10GJ 10KC 2.5VDM SCL_TV AVSW2 KEY_IN 5 PWR_SW BPF-SW 4 40 IIC SDA2 (NV) W-DOG OUT 3 21V AGND 6 C841 CJ 22CL D841 IIC SDA1 41 (TV) AMUTE 2 C842 CJ 22CL D842 42 IIC SCL2 (NV) IIC SCL1 (TV) 1 R823 1/10 GJ 10KC 1/10 GJ 10KC IC651 6.5V 25KZ 0.1 LZF HD2-OUT AV2_HS 19 V+ 16 17 18 Vref 19 CTH AGC CTL C3420 HJ0.33G :63GJ0.
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Chassis No. 32744-00 NC 33 R-OUT 32 Y-IN 31 R1012 1/10GJ 1.8KC C1006 EM2.2 LBWA LIN R1015 1/10GJ 470KC R1016 1/10GJ 1.8KC C1008 EM2.
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MODEL HT32744 Chassis No. 32744-00 K6GND KFRONT2 A1901 D1614 D1612 3 PQ050EA1MXP 3 2 ★ IC1611 U20B40500 1 ★ T681 Reg. (5V) L1902 J 5V_AL 1 2 C610 ★ C601 275GM 0.1VDB ★ 275GM 0.22VDC 1 4 1 3 F601A ★ LF602 – Power ON/OFF R1612 C1618 33K KZ0.01F AC 1 ★ RL601 ★ ★ ★ C600 R601 15WK1M :15WK1VE PS601 C604 500KK 1000A 500KK KD1P 4700A ★ ★ ★ L901 DEG. COIL CRT Drive AC + 2 1 2 ★ D601 RBV-608 D1611 CH.POWER VOL.VOL.+ CH.