Marantz 4270 Specifications

CAUTION:Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and"PRODUCT SAFETY NOTICE&

Page 10MODELS: HD-4001SIGNAL BRACKET REMOVALSIGNALBRACKETPWBSupportPostFAN

MODELS: HD-4001Page 11REAR PANEL REMOVALFANPWB

Page 12MODELS: HD-4001CARD READER REMOVALFront CoverControl PWBFront bracketFRONTBRACKETFRONTCOVERPWBCONTROL(Remove Lowersnaps first)FRONT PANEL REMOV

MODEL: HD-4001Page 13ELECTRICAL ADJUSTMENTSNote: Perform only the adjustments required.Do not attempt an alignment if proper equipment is not availabl

Page 14MODEL: HD-4001DEFAULTSOPTION MENU1. Press the “MENU” button on the remote hand unit.2. Press the buttons “2”, “4”, “7” and “0” in order. (Th

MODEL: HD-4001Page 15A.A/V MemoryEach of the external inputs has its’ own Audio/Video Memory. A change in an A/V setting at a specific input isstored

Page 16MODEL: HD-40013. Adjustment SelectionUse the “VIDEO” button to select a specific elecrtrical ajustment.4. Adjusting DataAfter selecting an adju

MODEL: HD-4001Page 17SERVICE MODE - Adjustment Items and Initial Data ValuesMAIN MATRIXItem # Abbrev. Description Data Range Initial Data1 TNTM Main T

MODEL: HD-4001Page 18Purpose:MeasuringInstrumentTest PointMeasuringRangeInput SignalExt. TriggerInput TerminalSymptom:Purpose:MeasuringInstrumentTest

MODEL: HD-4001Page 19Purpose:MeasuringInstrumentTest PointMeasuringRangeInput SignalExt. TriggerInput TerminalSymptom:Purpose:MeasuringInstrumentTest

PAGE 20MODELS: HD-4001CHIP PARTS REPLACEMENTSome resistors, shorting jumpers (0 Ohm resistors),ceramic capacitors, transistors and diodes are chip par

PAGE 21MODELS: HD-4001Parts OrderingTo expedite delivery of replacement parts orders, specify the following:1. Model Number/Serial Number2. Part Num

Ref # Part # Part Name & Description [#]PAGE 22Ref # Part # Part Name & Description [#]MODELS: HD-4001INTEGRATED CIRCUITSIC2001 276P257010 IC-

PAGE 23Ref # Part # Part Name & Description [#] Ref # Part # Part Name & Description [#]MODELS: HD-4001IC8719 271P023010 IC - SN74CBTD1G125DBV

Ref # Part # Part Name & Description [#]PAGE 24Ref # Part # Part Name & Description [#]MODELS: HD-4001L2111 409P777080 EMI-F-CHIP - BLM21P221S

PAGE 25Ref # Part # Part Name & Description [#] Ref # Part # Part Name & Description [#]MODELS: HD-4001L7J13 409P777080 EMI-F-CHIP - BLM21P221

Ref # Part # Part Name & Description [#]PAGE 26Ref # Part # Part Name & Description [#]MODELS: HD-4001L8727 409P923060 EMI-F-CHIP - BLM21B272S

PAGE 27Ref # Part # Part Name & Description [#] Ref # Part # Part Name & Description [#]MODELS: HD-4001LC8605 409P945010 EMI-F-CHIP - NFL21SP5

Ref # Part # Part Name & Description [#]PAGE 28Ref # Part # Part Name & Description [#]MODELS: HD-4001Part No. Value Part No. Value103P491080

PAGE 29Ref # Part # Part Name & Description [#] Ref # Part # Part Name & Description [#]MODELS: HD-4001C8736 181P185060 C-ELEC - 50V 10M-M 105

MODEL: HD-4001Page 3INTRODUCTION ...

Ref # Part # Part Name & Description [#]PAGE 30Ref # Part # Part Name & Description [#]MODELS: HD-4001X7J10 285P335050 QTZ-CRYST - 80.000MHZX7

MODEL: HD-4001Page 31Standby Supplies

MODEL: HD-4001Page 32PWB-DM Power SuppliesPWB-SIGNAL Switched Supplies

MODEL: HD-4001Page 33Tuners & Analog VideoSelect Circuitry

MODEL: HD-4001Page 34Digital Video Signal Path

MODEL: HD-4001Page 35Sync Signal SelectionSync Output Path

MODEL: HD-4001Page 36Sound Signal Path

MODEL: HD-4001Page 37Control Circuitry

MODEL: HD-4001Page 38Command Input CircuitryMacrovision Detection

403938373635343332313029282726252423222120191817161514131211109876543124039383736353433323130292827262524232221201918171615141312111098765431240393837

Page 4MODEL: HD-4001Part 2Schematic DiagramsCONTENTS PageSCHEMATIC DIAGRAMSOverall PWB Interconnect Diagram ...

S-HGGF9A22125V 10A(20N 10K)1234D9A30EQA02-32B/RD33EB3HOTGNDF9A21125V 10A(20N 10K)AREFKHOTGNDHOTGNDHOTGNDF9D00S10A 125VK9A50LKS1AF-12V1S12S23C14C2L9A22

MBMBTST1BSTS T1BSTS T1BSTS T1BSTS T1BS40393837363534333231302928272625242322212019181716151413121110987654312 4039383736353433323130292827262524232221

403938373635343332313029282726252423222120191817161514131211109876543122.5V-UDP-32.5V-UDP-21/16WR2M723302201/16WR2M511UC2K4310V/6.3V0.01C2K4825V/50V16

H-HD-COMPV-HD-COMPCDEC-Pr-M-OUTCDEC-Pb-M-OUTCDEC-Y-M-OUTCDEC-Pr-S-OUTCDEC-Pb-S-OUTCDEC-Y-S-OUTY-M-CSWPb-M-CSWPr-M-CSWPr-S-CSWPb-S-CSWY-S-CSWPr-M-COMPP

BUSREQGLINKTXD5VSCL5VSCL5VSDA5VSDAEE_SCLEE_SDADATAMTODASICCLKMONLINKTXDGLINKRXD3.3VSTP-3.3VST12VCCSCLSDAWCVSSE0E1E2RSTMRWDIGNDVCC1Z0XINH0YX-COM0ZZ-COM

1.7V5VA1VD3.3VD3.3VD3.3V5V5V5V5V5V5V5V1.3VBUSYTXD1RXD0CTSRXD1VID-G+GND2A 2YVCC1A 1YRSTMRWDIGNDVCCABGNDOEVCCABGNDOEVCC1P95/ANEX0/CLK42P94/DA1/TB4IN3P93

IC9C102LD29150DT33RSAA7115HLIC8A00PCIIC8A02AK5353VTIC8A01 MT48LC2M32B2TG-740393837363534333231302928272625242322212019181716151413121110987654312GMCTS

HMRVSYNCHMRHSYNCHMRPRHMRYHMRPBHMRMCLKHMRSCLKHMRWSHMRSD0HMRINTHMRRST3.3VSCL3.3VSDA1234DC1R019JDA181920212223D1S1G1D2S2G2123412341234271P072-41IN OUTGND

HTX-ADJ-3.3VHTX-ADJ-3.3VHTX-A3.3VHTX-A3.3VHDMI_TX_MCLKHTX-P1-3.3VHMTSDAHMTSCLHTX1-3.3VHTX2-3.3VSF_RA-ADC-5VA-ADC-5VSF_LRCKSF_SCLKHTX_MCLKHTX_MCLKHTX_M

FAIC5T01SM5301AS-etLD29150PT50RIC5U01IC5J20ICS574MITIC5J01ADV7196AKSMGVBUF-Pb-INVBUF-Y-INVBUF-Pr-INVENC-Pr-OUTVENC-Pb-OUTVENC-Y-OUT3.3VSCL3.3VSDADVR-T

MODELS: HD-4001Page 5INTRODUCTIONThis service manual provides service instructions for STB model HD-4001 which uses the V26K chassis. Servicepersonne

4039383736353433323130292827262524232221201918171615141312111098765431240393837363534333231302928272625242322212019181716151413121110987654312GND2SC24

IC8719IC8721BAO9FPIC8713MC33202DIC8720IC8710LD29150DT25RENV16H01D6TU8702IC8706MSP 4440G QI-C13TUMBDFR-A103-NTIC8711IC8712CS4334-KSRIC8723LD29150DT33RI

H-HD-COMPV-HD-COMPCDEC-Pr-M-OUTCDEC-Pb-M-OUTCDEC-Y-M-OUTCDEC-Pr-S-OUTCDEC-Pb-S-OUTCDEC-Y-S-OUTY-M-CSWPb-M-CSWPr-M-CSWPr-S-CSWPb-S-CSWY-S-CSWPr-M-COMPP

Page 6MODELS: HD-4001SAFETY PRECAUTIONSNOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on thereceiver ch

MODELS: HD-4001Page 7PWB-LOCATIONPWBCONTROLPWBPOWERFANPWBCARDREADERPWB-SIGNAL(Top)PWBTERMINAL1PWB-DM(Under Signal)PWBTERMINAL2PWBTUNER

Page 8MODELS: HD-4001DISASSEMBLYTOP COVER REMOVALTop Cover

MODELS: HD-4001Page 9PWB-SIGNALPWBSIGNALPWBTERMINAL1PWBTERMINAL2TERMINAL-PWBREMOVALSIGNAL-PWBREMOVAL