Ser vice Manual 2005 MITSUBISHI ELECTRIC SET TOP BOX V26K CHASSIS MODEL HD-4001 RECEIVER/CONTROLLER FOR MODELS LT-3280 & LT-3780 CAUTION: Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and "PRODUCT SAFETY NOTICE" contained in this manual.
MODEL: HD-4001 CONTENTS INTRODUCTION ................................................................................................................................ 5 PRODUCT SAFETY NOTICE ............................................................................................................. 5 SAFETY PRECAUTIONS ................................................................................................................... 6 PWB-LOCATIONS ..........................................................
MODEL: HD-4001 Part 2 Schematic Diagrams CONTENTS Page SCHEMATIC DIAGRAMS Overall PWB Interconnect Diagram ................................................................................................. 1 POWER / E2P / CONTROL / MV Decoder] .................................................................................... 2 TERMINAL-1 / TERMINAL-2 [Inputs / Outputs] ............................................................................... 3 SIGNAL-1 [Video Switch] ..............................
MODELS: HD-4001 INTRODUCTION This service manual provides service instructions for STB model HD-4001 which uses the V26K chassis. Service personnel should read this manual thoroughly before servicing these chassis. This service manual includes: 1. Safety Precautions 2. Assembly and disassembly instructions. 3. Servicing printed circuit boards (PCBs). 4. Electrical adjustments. 5. Chip parts replacement procedures. 6. Circuit path diagrams. The parts list section of this service manual includes: 1.
MODELS: HD-4001 SAFETY PRECAUTIONS NOTICE: WARNING: 1. 2. Observe all cautions and safety related notes located inside the receiver cabinet and on the receiver chassis. Operation of this receiver outside the cabinet or with the cover removed presents a shock hazard from the receiver's power supplies. Work on the receiver should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment.
MODELS: HD-4001 PWB-LOCATION PWB CONTROL PWB POWER FAN PWB PWB-SIGNAL (Top) PWB TUNER PWB-DM (Under Signal) PWB TERMINAL1 PWB TERMINAL2 Page 7 CARD READER
MODELS: HD-4001 DISASSEMBLY TOP COVER REMOVAL Top Cover Page 8
MODELS: HD-4001 SIGNAL-PWB REMOVAL PWB SIGNAL PWB-SIGNAL TERMINAL-PWB REMOVAL PWB TERMINAL1 PWB TERMINAL2 Page 9
MODELS: HD-4001 SIGNAL BRACKET REMOVAL FAN SIGNAL BRACKET PWB Support Post Page 10
MODELS: HD-4001 REAR PANEL REMOVAL FAN PWB Page 11
MODELS: HD-4001 CARD READER REMOVAL FRONT COVER Front Cover (Remove Lower snaps first) FRONT PANEL REMOVAL FRONT Front bracket BRACKET Control PWB PWB CONTROL Page 12
MODEL: HD-4001 ELECTRICAL ADJUSTMENTS Note: Perform only the adjustments required. Do not attempt an alignment if proper equipment is not available. Test Equipment • • Oscilloscope (Unless otherwise specified, use 10:1 probes) Signal Generator (both SD and HD capable) Test Signal A. Monoscope Signal Note: If you do not have a monoscope signal source, connect the unit to a VCR and play a Monoscope *alignment tape. (* Part Number: 859C568060) B.
MODEL: HD-4001 OPTION MENU 1. Press the “MENU” button on the remote hand unit. 2. Press the buttons “2”, “4”, “7” and “0” in order. (The screen will change to the option menu.
MODEL: HD-4001 A. A/V Memory Each of the external inputs has its’ own Audio/Video Memory. A change in an A/V setting at a specific input is stored in memory for that specific input. B. A/V Reset The AV Reset in the user’s menu initializes only the selected input’s A/V Memory. LED Indicator Diagnostics The “POWER/TIMER” LED provides an indication of the sets operation, and the possible cause of a malfunction. 1.
MODEL: HD-4001 CIRCUIT ADJUSTMENTS : Electrical Adjustments Electrical Adjusments are performed in Service Adjustment Mode. 1. Activating the adjustment mode 1. Press the “MENU” button on a remote hand unit. (The “MENU” display will appear.) 2. Press the buttons “2”, “4”, “5” and “7” in that order. (The screen will change to the adjustment mode.) If not changed to the adjustment mode, repeat steps 1 and 2. 2. Adjustment Function Selection Use the “AUDIO” button to select a specific Adjustment Function.
MODEL: HD-4001 Transferring Data 1) Enter the Service Adjustment Mode ... Press “MENU-2-4-5-7” 2) Press “0” when in the Service Mode ... Three choices appear at the top of the screen.
MODEL: HD-4001 Purpose: TEST POINTS Symptom: Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal TPSY TPY [Video Circuit] Purpose: To set the main picture Y level 1. Main-Y Gain Symptom: Incorrect analog source main picture brightness level. Measuring Instrument Oscilloscope Test Point TPMY Ext. Trigger ------ Measuring Range ------- Input Signal Input Terminal Color bars 1. 2. 3. 4. 5. 6. 7. 8.
MODEL: HD-4001 [Video Circuit] Purpose: To set the sub picture Y level 2. Sub-Y Gain Symptom: Incorret analog source sib picture brightness level. Measuring Instrument Oscilloscope Test Point TPSY Ext. Trigger ------ Measuring Range ------- Input Signal Color bars Input Terminal External Input 1. Supply a Color Bars with 100% white signal to an External Input. Select this input as the sub picture source. 2. Connect a scope to TPSY. 3. Enter the Alignment Mode (MENU-2-4-5-7) 4.
MODELS: HD-4001 CHIP PARTS REPLACEMENT Some resistors, shorting jumpers (0 Ohm resistors), ceramic capacitors, transistors and diodes are chip parts. The following precautions should be taken when replacing these parts. Chip Parts Removal (Transistors) 1. Melt the solder of one lead and lift the side of that lead upward. 2. Simultaneously melt the solder of the other two leads and lift the part from the PCB. Cautions: 1.
MODELS: HD-4001 REPLACEMENT PARTS Parts Ordering To expedite delivery of replacement parts orders, specify the following: 1. Model Number/Serial Number 2. Part Number and description 3. Quantity Note: Unless complete information is supplied, delay in processing of orders will result. Critical and Warranty Parts Designation Critical Electrical Components are indicated by Bold Type in the Parts List, and in the schematic diagrams by shading. Warranty Return Parts are indicated in the Parts List with an (*).
MODELS: HD-4001 Ref # Part # Part Name & Description INTEGRATED CIRCUITS IC2001 IC2011 IC2020 IC2021 IC2040 IC2051 IC2070 IC2080 IC2090 IC2091 IC2092 IC2093 IC2C00 IC2C01 IC2C02 IC2C03 IC2K01 IC2L00 IC2L70 IC2M01 IC2M02 IC3B01 IC3C01 IC3E01 IC3E02 IC3E03 IC3J01 IC54Z1 IC54Z3 IC54Z4 IC5A01 IC5A03 IC5G01 IC5H01 IC5J01 IC5J10 IC5J20 IC5P01 IC5T01 IC5U01 IC7A00 IC7A01 IC7A02 IC7A04 IC7D00 IC7D01 IC7DA1 IC7DB0 IC7DC0 IC7E01 IC7E02 IC7H00 IC7K21 IC7M00 IC7N01 IC7N02 IC7P01 IC7P03 IC7P04 276P257010 261P837010
MODELS: HD-4001 Ref # Part # IC8719 IC8720 IC8721 IC8722 IC8723 IC8724 IC8800 IC8801 IC8802 IC8805 IC8806 IC8A00 IC8A01 IC8A02 IC8A03 IC8E00 IC8G00 IC8G01 IC8G02 IC8G03 IC8G04 IC8G05 IC8G06 IC8H01 IC8H02 IC8H10 IC8H20 IC8T01 IC8T02 IC9A20 IC9A21 IC9C10 IC9C10 IC9C21 IC9C41 IC9M01 IC9M02 IC9M03 IC9M04 Part Name & Description 271P023010 271P023010 270P677030 271P064010 271P072020 275P278010 270P877010 270P877010 275P464010 270P988010 271P039010 275P980010 275P982020 276P111010 276P112010 276P175010 276P25
MODELS: HD-4001 Ref # L2111 L2121 L2141 L2151 L2231 L2311 L2321 L2331 L2361 L2371 L2381 L2391 L2441 L2711 L2761 L2801 L2821 L2831 L2901 L2902 L2C03 L2H00 L2H01 L2J00 L2J01 L2J20 L2J21 L2J22 L2J23 L2K01 L2K09 L2K58 L2K67 L2K71 L2K80 L2K81 L2K90 L2K91 L2K99 L2L12 L2L13 L2L70 L2M21 L2M30 L2M31 L2M35 L2M36 L2M38 L2M40 L2M41 L2M42 L2M45 L2M46 L2M50 L2M53 L2M70 L2M71 L2M77 L2M81 Part # Part Name & Description [#] 409P777080 409P777080 409P777080 409P777080 325C462050 409P777080 409P777080 409P777080 409P7770
MODELS: HD-4001 Ref # L7J13 L7J38 L7J44 L7K01 L7K02 L7M90 L7N01 L7N41 L7N42 L7N43 L7N44 L7N45 L7N46 L7N47 L7N48 L7N49 L7N50 L7N51 L7N52 L7N53 L7N54 L7N55 L7N56 L7N57 L7N58 L7N59 L7N60 L7N61 L7N62 L7N63 L7N64 L7N65 L7N66 L7N67 L7N68 L7N70 L7N71 L7P00 L7P14 L7P20 L7P30 L8001 L8002 L8003 L8004 L8005 L8006 L8007 L8008 L8009 L8012 L8013 L8017 L8018 L81A1 L81A2 L81A3 L81A4 L81A5 L81A6 Part # 409P777080 409P777080 409P777080 325C421030 325C421030 409P777080 409P777080 409P955020 409P955020 409P955020 409P955020 4
MODELS: HD-4001 Ref # L8727 L8729 L8730 L8736 L8737 L8738 L8739 L8800 L8801 L8802 L8803 L8804 L8807 L8809 L8914 L8915 L8A00 L8A02 L8A04 L8A05 L8A06 L8A07 L8A08 L8A10 L8A11 L8A99 L8E00 L8E01 L8E02 L8E03 L8G00 L8G01 L8H00 L8H01 L8H03 L8H05 L8H13 L8H24 L8H25 L8H32 L8H82 L8H83 L8H84 L8H85 L8H87 L8H88 L8H90 L8H91 L8T03 L8T05 L8T13 L8T24 L8T25 L8T32 L9A20 L9A21 L9A22 L9A23 L9D00 L9D01 Part # Part Name & Description 409P923060 409P923060 409P923060 409P923060 409P865080 409P777080 409P923060 409P936050 409P936
MODELS: HD-4001 Ref # Part # Part Name & Description LC8605 LC8606 LF7D02 LF7D04 LF7D06 LF7D08 LF7D10 LF7D12 LF7D14 LF7D16 LF7D18 LF7D20 LF7D22 LF7D24 LF7H13 LF7H14 LF7H22 LF7H24 409P945010 409P945010 409P944010 409P944010 409P944010 409P944010 409P944010 409P944010 409P944010 409P945020 409P945020 409P945020 409P944010 409P944010 409P865020 409P865020 409P865020 409P865020 EMI-F-CHIP - NFL21SP506X13CD EMI-F-CHIP - NFL21SP506X13CD EMI-F-CHIP - NFL21SP107X1 EMI-F-CHIP - NFL21SP107X1 EMI-F-CHIP - NFL21SP
MODELS: HD-4001 Ref # Part # Part No. 103P491080 103P491090 103P502020 103P492010 103P502030 103P492030 103P502040 103P492050 103P502050 103P492070 Part Name & Description Value 1/16W 510-F 1/16W 560-F 1/16W 560-J 1/16W 680-F 1/16W 680-J 1/16W 820-F 1/16W 820-J 1/16W 1K-F 1/16W 1K-J 1/16W 1.2K-F Part No.
MODELS: HD-4001 Ref # Part # C8736 C8738 C8742 C8748 C8749 C8751 C8754 C8760 C8761 C8765 C8772 C8773 C8780 C8786 C8788 C8790 C8792 C8795 C8797 C8798 C87A0 C87A1 C87A3 C87A4 C87A7 C87C1 C87C4 C8840 C8844 C8845 C8847 C8848 C8852 C8853 C9A08 C9A09 C9A10 C9A11 C9A13 C9A14 C9A20 C9A21 C9A25 C9A26 C9A29 C9A30 C9A32 C9A33 C9A34 C9A35 C9A37 C9A38 C9A41 C9A43 C9D00 C9D01 C9D02 CF8H01 CF8T01 Part Name & Description 181P185060 181P352060 181P185060 181P185060 181P184020 181P185060 181P184020 181P352030 181P352060
MODELS: HD-4001 Ref # X7J10 X7P09 X8001 X8301 X8302 X8303 X8401 X8402 X8613 X8701 X8800 X8A00 X8A01 X8E00 X8G00 X8G01 X8H12 X8H14 X8H26 X8T12 X8T14 X8T26 Z7K02 Z81A1 Z81A2 Z81A3 Z81A4 Part # Part Name & Description 285P335050 285P434010 285P441040 285P434060 285P441030 285P413010 285P431020 285P410020 285P434060 285P413010 285P453010 285P387010 285P446010 285P387010 285P374040 285P374020 299P259010 285P029030 285P374020 299P259010 285P029030 285P374020 938P031010 283P128050 283P128050 283P128050 283P128
MODEL: HD-4001 Standby Supplies Page 31
MODEL: HD-4001 PWB-DM Power Supplies PWB-SIGNAL Switched Supplies Page 32
MODEL: HD-4001 Tuners & Analog Video Select Circuitry Page 33
MODEL: HD-4001 Digital Video Signal Path Page 34
MODEL: HD-4001 Sync Signal Selection Sync Output Path Page 35
Sound Signal Path MODEL: HD-4001 Page 36
MODEL: HD-4001 Control Circuitry Page 37
MODEL: HD-4001 Command Input Circuitry Macrovision Detection Page 38
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 * NOTES 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 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 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 35 36 37 38 39 40 POWER INLET 4.
8 (TO Signal PWB) (TO Signal PWB) TP6VS 2 1 D9A29 1S2076A/ 1S2471OM D9A28 T9A20 ER35TM075 1S2076A/ 1S2471OM R9A39 47K 1/16W C9A29 10U 50V 1S2076A/ 1S2471OM C9A30 10U 50V D9A30 EQA02-32B/RD33EB3 15 3 4 5 L8E00 BLM21PG221SN1 L8E02 BLM21PG221SN1 12VS C8E38 47U 6.3V C8E42 47U 6.3V C8E39 0.01 C8E43 0.01 1 NC R9A66 100 1/10W D9A44 6VS 1S2076A/ 1S2471OM 4 R9A69 100 1/10W R9A67 100 1/10W 5 D9A26 L8E03 BLM21PG221SN1 L8E01 BLM21PG221SN1 C8E44 47U 6.3V C8E45 0.01 6 C8E40 47U 6.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 A MAIN - L-R R2J54 0 1/16W 4 S R2J83 0 1/16W R2J84 0 1/16W Pb C2J24 39 50V 4 S 4 S 3 5 T1 B 3 5 T1 B PJ2J20 R2J42 0 1/16W C2J34 100 50V 10 R2J63 0 1/16W C2J33 100 50V R2J74 0 1/16W C2J14 39 50V 11 2 R2J14 75 1/16W Y 12 1 3 R2J61 120K PJ2J10 R2J13 75 1/16W 3 L R2J41 120K 9 1/16W 75 R2J24 C R2J73 0 1/16W C2J13 39 50V 1/16W 75 R2J23 To Tuner GND L 8 4 R2J60 120K R2J40 120K R2J12 75 1/16W 2 S Pr 5 C2J23 39 50V R
5 MODE1 MUTE_MON_OUT CV_MON MON-V COMPOSITE IN - CSYNC SEPARATOR R2L12 0 1/16W VOUTa 12 GND2 11 7 BIAS C2M21 0.1 25V/16V R2M21 100 1/16W 1 CSYNCOUT YOUTb 10 9V 8 GND1 C2M23 0.1 16V R2M23 680 1/16W Q2M21 2SC2412K-R,S 2 CVIDIN YOUTa 9 C2M22 560 25V R2M22 1.5K 1/16W 12VS 7 3 VSYNCOUT RSET 6 BURST C2M24 0.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From Video SW SIGNAL 1 R8H59 0 1/16W R8H45 0 1/16W R8H58 0 1/16W Pr-MAIN H-MAIN V-MAIN C-Pb-MAIN V-Y-MAIN Pr-SUB R8H46 0 1/16W L8H00 221 OHM R8H57 0 1/16W 9V R8H33 470 1/16W V-Y-M-COMP C8H75 C-Pb-M-COMP Pr-M-COMP R8H56 0 1/16W R8H50 0 1/16W H-M-COMP R8S05 100 1/16W R8S07 100 1/16W Q8S10 Q8S08 Q8S09 HMRPR HMRPR-BUF HMRPB HMRPB-BUF HMRY HMRY-BUF R8H49 39 1/16W R8T18 820 1/16W Q8H08 5V R8H30 330K 1/16W C8H21 120 50V 2 1
5 9 3.3VS 12 13 14 15 16 2 GND GND 3.3VS 3.3VS 3 4 5 6 7 8 FAN-STOP 1 SHORT 9 12 RELAY 11 10 NC 7 6 11 KC 8 AC-OFF 5 EE_SDA GND GND 5VSCL 3 4 BUSREQ 2 10 To POWER PWB RG 1 2 5VSDA ASYNCDET ASYNC SDVGA HDSD HDIP SDFILTER MV_RST HDMISEL 1 8 To RS232C Driver SIGNAL 9 ALIGNMENT TEST CONNECTOR DRIVE RESET RH A 7 FAN-SW HARD DISK TO SIGNAL 8 6 PON-1 4 RS232-EN 3 RS232-SW 2 EE_SCL 1 3.3VS 3.3VS 3.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 A B 5V C8G18 100U 16V C8G17 1U 10V/6.3V C8G16 0.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 17 19 C8A54 1U 10V D3.3V_MPEG X8A01 DSO 751SV 83.33MHZ DDATA25 DDATA24 DDATA26 DDATA27 DDATA28 DDATA29 DDATA30 47 44 VSS1 45 DQ24 DQ26 DQ28 46 VSSQ5 49 DQ25 50 DQ27 51 VSSQ6 DQ29 52 VDDQ5 A3 A4 A5 A6 A7 A8 A9 DDATA31 DQ30 BAO BA1 A10 A0 A1 A2 DQM2 VDD3 NC3 DQ16 VSSQ3 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 C8A18 0.1 16V C8A14 0.1 16V C8A12 0.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 R2790 100 1/16W A EDIDSDA1 3.3VSDA R2901 0 1/16W 6 5 D1 3.3VSCL 4 S2 G2 L2151 221 OHM IC2091 L2141 221 OHM UPA672T R2940 0 1/16W G1 S1 1 R2903 0 1/16W EDIDSCL1 C2141 1000 50V C2143 0.1 16V C2142 0.1 16V D2 3 2 C2145 0.1 16V C2144 22U 16V L2111 221 OHM IC2020 24LCS22AT/SN R2785 100 1/16W R2767 10K 1/16W VCC 2 NC2 VCLK 7 3 WP SCL 4 VSS SDA R2765 10K 1/16W R2762 47K 1/16W C2762 10U 16V C2761 16V 0.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A L3A01 221 OHM ADC-5V 5V R3B04 C3A02 0.
2 3 4 6 7 8 9 10 11 12 13 14 15 16 CPLD JTAG - PROGRAM CONNECTOR SIGNAL 1 FBIN 8 2 CLK1 CLK4 7 3 CLK2 CLK3 6 TDO_CPLD 5 6 TCK 4 GND 3 TMS 2 TDI 1 TDO IC5J20 ICS574MIT 1 CLKIN MG 3.3V DVR-TS-DATA DVR-TS-VALID DVR-TS-CLK A DVR-TS-SYNC MPEG ENCODER SIGNAL 5 5 VCC(3.3V) 1 DPGND L5P01 BLM18AG121SN1 L5P02 BLM18AG121SN1 GND L5J20 BLM18AG121SN1 50 4 GND VDD L5P03 BLM18AG121SN1 5 GND 49 48 C5J05 0.
CTAFT MT-MONITOR SIGNAL 3 MONITOR - MUTE CONTROL 8 MONITOR OUTPUT SIGNAL 1 9 AUDIO OUT SIGNAL 3 10 11 12 13 14 15 16 MT-AUDIO SIGNAL 3 MT-AUDIO MON-V R-IN-MON L-IN-MON 9V A 7 DM-AUD-L Audio Switch SIGNAL 1 MONITOR: V SIGNAL 1 SIGNAL 1 6 DM-AUD-R MONITOR: L , R 5 V-MOUT 4 R-MOUT 3 L-MOUT 2 MT-MON 1 12VS AFT SIGNAL 3 R2L31 10K 1/16W Q2L31 VPAFT L2L13 221 OHM Q2L35 SUBTU-R MON-R Q2L54 2SA1037K-S VTM R2L33 1K 1/16W 1 1 R2L63 100 1/16W VTM 2 2 C2L31 10U 16V M
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TO POWER PWB TO TUNER 2 KT 3 4 5 6 7 6VS IC8722 30VS NC 2 12VS MAIN_IF 30VS 3.3V A FDC-INN 5VS FDC-INP 1 AGND EN2 DATA2 CLK2 FREF_IN 10 11 12 13 14 15 16 17 CT_EN2 IF-Tuner C8702 100U 50V C8752 K-0.01 25V/50V Q8702 C8740 K-0.1 16V C8733 330U 16V R8753 1K 1/16W Q8703 2SC2412K-R,S 100MH 2.2MH 2.2MH L8705 L8703 2.2MH R8756 1K 1/16W AGND 2.2MH ATSC-CTRL 3.3V AGND R8736 F-2.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From Video SW SIGNAL 1 R8H59 0 1/16W R8H45 0 1/16W R8H58 0 1/16W Pr-MAIN H-MAIN V-MAIN C-Pb-MAIN V-Y-MAIN Pr-SUB R8H46 0 1/16W L8H00 221 OHM R8H57 0 1/16W 9V R8H33 470 1/16W V-Y-M-COMP C8H75 C-Pb-M-COMP Pr-M-COMP R8H56 0 1/16W R8H50 0 1/16W H-M-COMP R8S05 100 1/16W R8S07 100 1/16W Q8S10 Q8S08 Q8S09 HMRPR HMRPR-BUF HMRPB HMRPB-BUF HMRY HMRY-BUF R8H49 39 1/16W R8T18 820 1/16W Q8H08 5V R8H30 330K 1/16W C8H21 120 50V 2 1
