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Mitsubishi Electric HD-4001 Service Manual

Receiver/controller for models lt-3280 & lt-3780, set top box v26k chassis.
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MITSUBISHI ELECTRIC
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
• Power Input
: AC 120V, 60Hz
• Power Usage
:
• Frequency Range
: VHF 54 ~ 470MHz
• Antenna Input
: 2 RF 75Ω unbalanced
• Tuning
: 1 NTSC/ATSC/QAM
• Cabinet Dimensions
: 17"(W) x 3.7"(H) x 17.25"(D)
• Weight
: 12.8 lbs
: VIDEO IN JACK (RCA Type)
• Analog Input
Levels
: AUDIO IN JACK (RCA Type)
• Design specifications are subject to change without notice.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
SPECIFICATIONS
82W
UHF 470 ~ 806MHz
Analog Cable - 1 ~ 125
Digital Cable - 1 ~ 135
1 CableCARD™ Slot
1 NTSC for PIP
1.0Vp-p 75Ω unbalanced
-4.7dBm 43kΩ unbalanced
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2005 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
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Manual
Manual
Manual
Manual
Manual
SET TOP BOX
V26K CHASSIS
MODEL
HD-4001
RECEIVER/CONTROLLER
FOR MODELS LT-3280 & LT-3780
: S-VIDEO IN JACK
(Y/C separate type)
Y:1.0 Vp-p C:0.286Vp-p(BURST)
75Ω unbalanced
: COMP / Y, Cr, Cb (RCA Type)
Y: 1.0 Vp-p Cr, Cb: 700mVp-p
• Output Level
: VIDEO OUT JACK (RCA Type)
1.0Vp-p 75Ω unbalanced
: AUDIO OUT JACK (RCA Type)
-4.7dBm 4.7kΩ unbalanced
• Digital
: IEEE-1394 I/O Jacks
Interface
: AC-3 Digtal Audio Output
: HDMI™ Input
:
MonitorLink
: CableCARD™ Slot
: NetCommand®
.
2005
2005
2005
2005
2005
TM
Control/RS-232C

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   Summary of Contents for Mitsubishi Electric HD-4001

  • Page 1 2005 2005 2005 Manual Manual Manual Manual Manual 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"...
  • Page 3: Table Of Contents

    MODEL: HD-4001 CONTENTS INTRODUCTION ..........................5 PRODUCT SAFETY NOTICE ......................5 SAFETY PRECAUTIONS ........................6 PWB-LOCATIONS ..........................7 DISASSEMBLY ..........................8 Top Cover removal ........................8 PWB-SIGNAL & PWB-TERMINAL Removal ................9 Signal Bracket Removal ....................... 10 Rear Panel Removal......................11 Card Reader Removal &...
  • Page 4 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] ........................ 4 SIGNAL-2 [Decoder / Switch] ......................5 SIGNALS-3 [Micro} .........................
  • Page 5: Model: Hd

    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.
  • Page 6: Safety Precautions

    MODELS: HD-4001 SAFETY PRECAUTIONS NOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on the receiver chassis. WARNING: 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.
  • Page 7: Pwb-locations

    MODELS: HD-4001 PWB-LOCATION CARD READER CONTROL POWER PWB-SIGNAL (Top) TUNER PWB-DM (Under Signal) TERMINAL1 TERMINAL2 Page 7...
  • Page 8: Disassembly

    MODELS: HD-4001 DISASSEMBLY TOP COVER REMOVAL Top Cover Page 8...
  • Page 9 MODELS: HD-4001 SIGNAL-PWB REMOVAL PWB-SIGNAL SIGNAL TERMINAL-PWB REMOVAL TERMINAL1 TERMINAL2 Page 9...
  • Page 10: Signal Bracket Removal

    MODELS: HD-4001 SIGNAL BRACKET REMOVAL SIGNAL BRACKET Support Post Page 10...
  • Page 11 MODELS: HD-4001 Page 11...
  • Page 12 MODELS: HD-4001 CARD READER REMOVAL FRONT FRONT PANEL REMOVAL COVER Front Cover (Remove Lower snaps first) FRONT Front bracket BRACKET Control PWB CONTROL Page 12...
  • Page 13: Electrical Adjustments

    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.
  • Page 14 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.) DEFAULTS Defaults After Initialization Setup Menu Captions Menu (continued)
  • Page 15: Remote Control Operational Mode

    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.
  • Page 16: Circuit Adjustment Mode

    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.
  • Page 17 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. 3) User UP & DN keys to highlight the desired choice, the Press “ENTER”...
  • Page 18: Test Points

    MODEL: HD-4001 Purpose: TEST POINTS Symptom: Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal TPSY Purpose: To set the main picture Y level [Video Circuit] Symptom: 1. Main-Y Gain Incorrect analog source main picture brightness level.
  • Page 19: Sub-y Gain

    MODEL: HD-4001 Purpose: To set the sub picture Y level [Video Circuit] 2. Sub-Y Gain Incorret analog source sib picture brightness level. Symptom: Measuring Oscilloscope Instrument 1. Supply a Color Bars with 100% white signal to an External Input. Select this input as the sub picture source.
  • Page 20: Chip Parts Replacement

    MODELS: HD-4001 CHIP PARTS REPLACEMENT Some resistors, shorting jumpers (0 Ohm resistors), Chip Parts Removal (Transistors) ceramic capacitors, transistors and diodes are chip parts. Melt the solder of one lead and lift the side of The following precautions should be taken when replacing that lead upward.
  • Page 21: Replacement Parts

    MODELS: HD-4001 REPLACEMENT PARTS Parts Ordering To expedite delivery of replacement parts orders, specify the following: Model Number/Serial Number Part Number and description 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.
  • Page 22 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description IC7P30 275P718010 IC-C-MOS - TC74HC4053FT INTEGRATED CIRCUITS IC7P31 271P023010 IC - SN74CBTD1G125DBVR IC2001 276P257010 IC-C-MOS - Sil9031CTU IC8001 276P030030 IC-C-MOS - 215H31AGA12H...
  • Page 23 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description IC8719 271P023010 IC - SN74CBTD1G125DBVR DIODES IC8720 271P023010 IC - SN74CBTD1G125DBVR D2301 262P805050 D-CHIP - UDZS5.1B IC8721 270P677030 IC - BAO9FP D2770 262P805050 D-CHIP - UDZS5.1B...
  • Page 24 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description L3A01 409P777080 EMI-F-CHIP - BLM21P221S L2111 409P777080 EMI-F-CHIP - BLM21P221S L3A02 409P777080 EMI-F-CHIP - BLM21P221S L2121 409P777080 EMI-F-CHIP - BLM21P221S L3A04 409P777080...
  • Page 25 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description L7J13 409P777080 EMI-F-CHIP - BLM21P221S L81A7 409P865080 EMI-F-CHIP - BLM18PG6 L7J38 409P777080 EMI-F-CHIP - BLM21P221S L81A8 409P777080 EMI-F-CHIP - BLM21P221S L7J44 409P777080...
  • Page 26 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description L8727 409P923060 EMI-F-CHIP - BLM21B272S LC202 409P876020 EMI-F-CHIP - CNF20C470S/CKD510JB1H470S L8729 409P923060 EMI-F-CHIP - BLM21B272S LC203 409P876020 EMI-F-CHIP - CNF20C470S/CKD510JB1H470S L8730 409P923060...
  • Page 27 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description LC8605 409P945010 EMI-F-CHIP - NFL21SP506X13CD RV5A28 265P804010 VARISTOR-CHIP - 0603 PULSE GUARD LC8606 409P945010 EMI-F-CHIP - NFL21SP506X13CD RV5A30 265P804010 VARISTOR-CHIP - 0603 PULSE GUARD...
  • Page 28 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description Part No. Value Part No. Value Part No. Value Part No. Value 103P491080 1/16W 510-F 103P504090 1/16W 100K-J 154P342050 CH50V 39P-J 141P134070...
  • Page 29 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description C8736 181P185060 C-ELEC - 50V 10M-M 105C SWITCHES C8738 181P352060 C-ELEC - 16V 330M-M S7L20 432P109010 SW-KEY BOARD - KSHS611BT C8742 181P185060...
  • Page 30 MODELS: HD-4001 Ref # Part # Part Name & Description Ref # Part # Part Name & Description X7J10 285P335050 QTZ-CRYST - 80.000MHZ X7P09 285P434010 QTZ-CRYST - 8.000MHZ X8001 285P441040 QTZ-CRYST - 26.1621MHZ X8301 285P434060 QTZ-CRYST - 14.7456MHZ X8302 285P441030 QTZ-CRYST - 14.31818MHZ...
  • Page 31 MODEL: HD-4001 Standby Supplies Page 31...
  • Page 32: Pwb-dm Power Supplies

    MODEL: HD-4001 PWB-DM Power Supplies PWB-SIGNAL Switched Supplies Page 32...
  • Page 33 MODEL: HD-4001 Page 33...
  • Page 34: Digital Video Signal Path

    MODEL: HD-4001 Digital Video Signal Path Page 34...
  • Page 35: Sync Signal Selection

    MODEL: HD-4001 Sync Signal Selection Sync Output Path Page 35...
  • Page 36 MODEL: HD-4001 Page 36...
  • Page 37 MODEL: HD-4001 Page 37...
  • Page 38: Command Input Circuitry

    MODEL: HD-4001 Command Input Circuitry Macrovision Detection Page 38...
  • Page 39: Part

    30 31 32 33 34 35 36 37 38 39 40 30VS 30VS ANTRLY ANTRLY CONTENTS HD-4001 V26K PG 1..BLOCK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH]...
  • Page 40 CH-DOWN/ C7Y01 3.3K-F 0.01 ADJ-RIGHT POWER ADJ-UP ADJ-DOWN ADJ-LEFT DEVICE CANCEL S7L29 S7L28 S7L27 S7L26 S7L25 S7L24 S7L23 CONTENTS HD-4001 V26K KSHS611BT KSHS611BT KSHS611BT KSHS611BT KSHS611BT KSHS611BT KSHS611BT PG 1..BLOCK 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 5.6K 3.3K 2.2K 1.5K PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER]...
  • Page 41 RSB6.8S R2H23 1/16W R2H21 R2H20 1/16W 1/16W R2H22 1/16W CONTENTS HD-4001 V26K PG 1..BLOCK SYS_5 / GLINK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PJ2J22 PJ2J21 LGM1509-0300 PG 3..TERMINAL1 / TERMINAL 2 YKB21-5251 PG 4..SIGNAL1 [VIDEO SWITCH] SYSTEM-5 PG 5..SIGNAL2 [DECODER / SWITCH]...
  • Page 42 V-MAIN-TVUC Q7Q03 V-Y-M-OUT 1/16W 2SA1037K-R,S/2SB709AI-R,S Q2K58 MAIN CCD AMP 2SA1037K-R,S/2SB709AI-R,S CONTENTS HD-4001 V26K PG 1..BLOCK SYS-5_GLINK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] GLINK_TXD PG 3..TERMINAL1 / TERMINAL 2 GLINK_RXD PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH] SYSTEM5-OUT PG 6..SIGNAL3 [MICRO]...
  • Page 43 C-Pb-S-BUF From Micro PON-1 V-Y-S-BUF SIGNAL 3 Pr-S-COMP CONTENTS HD-4001 V26K PG 1..BLOCK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH] PG 6..SIGNAL3 [MICRO] PG 7..SIGNAL4 [TVGO]...
  • Page 44 1/16W SIGNAL 9 SIGNAL 1 UPDATE CONNECTOR TO HDMI RX TO DM PWB CONTENTS HD-4001 V26K SIGNAL 6 PG 1..BLOCK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH]...
  • Page 45 C8G30 100U 0.01 10V/6.3V 25V/50V D3.3V D3.3V CONTENTS HD-4001 V26K PG 1..BLOCK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH] PG 6..SIGNAL3 [MICRO] PG 7..SIGNAL4 [TVGO]...
  • Page 46 DGND DGND GMTXD D3.3V GMRXD GMRTS GMCTS RST-TVGOS CONTENTS HD-4001 V26K SUB AUDIO: L-R TV Micro SIGNAL 1 SIGNAL 3 PG 1..BLOCK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH]...
  • Page 47 C2612 HMRRST HMRINT HMRMCLK HMRSCLK HMRWS HMRSD0 CONTENTS HD-4001 V26K PG 1..BLOCK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH] PG 6..SIGNAL3 [MICRO] PG 7..SIGNAL4 [TVGO]...
  • Page 48 AT-49 12.288MHz C3E51 C3E52 DDCSDA 5VDDCCLK HTX_MCLK DPGND CONTENTS HD-4001 V26K PG 1..BLOCK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH] PG 6..SIGNAL3 [MICRO] PG 7..SIGNAL4 [TVGO]...
  • Page 49 D-ROUT4 D-ROUT6 D-ROUT5 D-ROUT5 D-ROUT6 DPGND D-ROUT4 D-ROUT7 D-ROUT3 D-ROUT2 DV-AN CONTENTS HD-4001 V26K D-ROUT1 VS-AN PG 1..BLOCK D-ROUT0 HS-AN PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 TPDE TPVS TPHS FIXED-HOUT PG 4..SIGNAL1 [VIDEO SWITCH]...
  • Page 50 TC: A/V IN/OUT - TO TERMINAL-2 BOARD R7P06 R7P07 2.2K 2.2K 1/16W 1/16W PIC_SCL PIC_SDA CONTENTS HD-4001 V26K IC7P04 PG 1..BLOCK SN74CBTD1G125DBVR PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 C7P21 PG 4..SIGNAL1 [VIDEO SWITCH] 25V/16V PG 5..SIGNAL2 [DECODER / SWITCH]...
  • Page 51 R8744 C8747 R8780 K-470 C8789 R8721 I2S D/A CONVERTER K-3300 MSP_I2S_CL K-1U 1/16W 1/16W 1/16W 10V/6.3V MSP_I2S_WS C8785 CONTENTS HD-4001 V26K N9 9 AGND R8733 R87C3 AGND MSP_I2S_DA K-1500 F-240K F-27K R8778 1/16W 1/16W 1/16W L8729 PG 1..BLOCK BLM21B272S AGND...
  • Page 52 C-Pb-S-BUF From Micro PON-1 V-Y-S-BUF SIGNAL 3 Pr-S-COMP CONTENTS HD-4001 V26K PG 1..BLOCK PG 2..POWER / E2P / CONTROL / SIGNAL 10 [MV DECODER] PG 3..TERMINAL1 / TERMINAL 2 PG 4..SIGNAL1 [VIDEO SWITCH] PG 5..SIGNAL2 [DECODER / SWITCH] PG 6..SIGNAL3 [MICRO] PG 7..SIGNAL4 [TVGO]...

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