NAD-T752-avr-sma2 维修电路原理图.pdf

1ISSUEDATE:18MAY2005 SERVICE MANUAL ADDENDUMRadioFans.CN 收音机爱 好者资料库2MAIN BOARD (ISSUE 6 - PN-01) VERSION HISTORY . 3PCB LAYOUT. 4 - 7 SCHEMATIC DIAGRAM.8 - 11TRIGGER (ISSUE 6 - PN-01) VERSION HISTORY . 12PCB LAYOUT. 13 SCHEMATIC DIAGRAM. 14 - 15KEYBOARD (ISSUE 6 - PN-01) VERSION HISTORY . 16PCB LAYOUT. 17 - 20 SCHEMATIC DIAGRAM. 21 - 24DSP (ISSUE 6 - PN-02) VERSION HISTORY . 25PCB LAYOUT. 26 - 30 SCHEMATIC DIAGRAM. 31 - 35AUDIO (ISSUE 6 - PN-03) VERSION HISTORY . 36PCB LAYOUT. 37 - 39 SCHEMATIC DIAGRAM. 40 - 43DIGITAL IN/OUT (ISSUE 6 - PN-02) VERSION HISTORY . 44PCB LAYOUT. 44 - 45 SCHEMATIC DIAGRAM. 46 - 50PRE-OUT (ISSUE 6 - PN-02) VERSION HISTORY . 51PCB LAYOUT. 52 - 54 SCHEMATIC DIAGRAM. 55 - 59CONTENTSNOTE PART NUMBER CHANGE: Original P/N Interim P/N Final P/N with Description80-0907520-02-00 800-KEBD52-00 50-922-0752-90 - T752 KEYBOARD ASSEMBLY80-0907520-63-00 800-POBD52-00 50-924-0752-90 - T752 PRE-OUT BOARD ASSEMBLYRadioFans.CN 收音机爱 好者资料库3VERSION HISTORYMAIN BOARDISSUEISSUE 6ISSUE 7ISSUE 8PN-01DESC. / PART NO.MAIN BOARD :55-0752003-10-00A6MAIN BOARD :55-0752003-10-00A7MAIN BOARD :55-0752003-10-00A8MAIN BOARD :55-0752003-10-01CAUSE(S)Add +5.6V to Pre-OutAdd Connector option for DSPNo layout changeSERIAL NUMBERR28T75200001-R28T75200280R28T75200401-R28T75200481R28T75200281-R28T75200400R28T75200482-R28T75201253R2XT75203301-R2XT75203460R28T75201254-R29T75202800R2XT75202801-R2XT75203300R2XT75203461-R2XT75203514R2XT75203515-R2XT75204550R2YT75204551-R2YT75205594R2YT75207629-R2YT75207685R2ZT75205595-R2ZT75206600R31T75206601-R31T75207100R32T75207101-R32T75207600R33T75207601-R33T75207727R34T75207728-R34T75209227R37T75209228-R37T75210377R38T75210378-R38T752106674PCB LAYOUTMAIN BOARD (ISSUE 6)5PCB LAYOUTMAIN BOARD (ISSUE 7)6PCB LAYOUTMAIN BOARD (ISSUE 8)7PCB LAYOUTMAIN BOARD (PN-01)8SCHEMATIC DIAGRAMMAIN BOARD (ISSUE 6)E B CSS80509SCHEMATIC DIAGRAMMAIN BOARD (ISSUE 7)E B CSS805010SCHEMATIC DIAGRAMMAIN BOARD (ISSUE 8)E B CSS805011SCHEMATIC DIAGRAMMAIN BOARD (PN-01)E B CSS805012VERSION HISTORYTRIGGER BOARDISSUEISSUE 6ISSUE 7ISSUE 8PN-01DESC. / PART NO.TRIGGER BOARD :55-0752003-10-00A6TRIGGER BOARD :55-0752003-10-00A7TRIGGER BOARD :55-0752003-10-00A8TRIGGER BOARD :55-0752003-10-01CAUSE(S)Delete R354 (Trigger in)Circuit update (IR OUT)Add Resistor to GND(Trigger IN/OUT)Delete C353 (IR IN)SERIAL NUMBERR28T75200001-R28T75200280R28T75200401-R28T75200481R28T75200281-R28T75200400R28T75200482-R28T75201253R2XT75203301-R2XT75203460R28T75201254-R29T75202800R2XT75202801-R2XT75203300R2XT75203461-R2XT75203514R2XT75203515-R2XT75204550R2YT75204551-R2YT75205594R2YT75207629-R2YT75207685R2ZT75205595-R2ZT75206600R31T75206601-R31T75207100R32T75207101-R32T75207600R33T75207601-R33T75207727R34T75207728-R34T75209227R37T75209228-R37T75210377R38T75210378-R38T7521066713PCB LAYOUTTRIGGER BOARD (ISSUE 6)TRIGGER BOARD (ISSUE 8)TRIGGER BOARD (PN-01)TRIGGER BOARD (ISSUE 7)14DTC123ESAE C BDTC123ESAE C BSCHEMATIC DIAGRAMTRIGGER BOARD (ISSUE 6)TRIGGER BOARD (ISSUE 7)15DTC123ESAE C BSCHEMATIC DIAGRAMTRIGGER BOARD (ISSUE 8)DTC123ESAE C BTRIGGER BOARD (PN-01)16VERSION HISTORYKEYBOARDISSUEISSUE 6ISSUE 7ISSUE 8PN-01DESC. / PART NO.KEYBOARD :55-0752003-20-00A6KEYBOARD :55-0752003-20-00A7KEYBOARD :55-0752003-20-00A8KEYBOARD :55-0752003-20-01CAUSE(S)New connection of THERMALNo layout changeAdd RC of Rotary EncoderSERIAL NUMBERR28T75200001-R28T75200280R28T75200401-R28T75200481R28T75200281-R28T75200400R28T75200482-R28T75201253R2XT75203301-R2XT75203460R28T75201254-R29T75202800R2XT75202801-R2XT75203300R2XT75203461-R2XT75203514R2XT75203515-R2XT75204550R2YT75204551-R2YT75205594R2YT75207629-R2YT75207685R2ZT75205595-R2ZT75206600R31T75206601-R31T75207100R32T75207101-R32T75207600R33T75207601-R33T75207727R34T75207728-R34T75209227R37T75209228-R37T75210377R38T75210378-R38T7521066717PCB LAYOUTKEYBOARD (ISSUE 6)COMPONENT SIDECOPPER SIDE18PCB LAYOUTKEYBOARD (ISSUE 7)COMPONENT SIDECOPPER SIDE19PCB LAYOUTKEYBOARD (ISSUE 8)COMPONENT SIDECOPPER SIDE20PCB LAYOUTKEYBOARD (PN-01)COMPONENT SIDECOPPER SIDE21SCHEMATIC DIAGRAMKEYBOARD (ISSUE 6)E C B2SC181522SCHEMATIC DIAGRAMKEYBOARD (ISSUE 7)E C B2SC181523SCHEMATIC DIAGRAMKEYBOARD (ISSUE 8)E C B2SC181524SCHEMATIC DIAGRAMKEYBOARD (PN-01)E C B2SC181525VERSION HISTORYDSP BOARDISSUEISSUE 6ISSUE 7ISSUE 8PN-01PN-02DESC. / PART NO.DSP BOARD :55-0752054-20-00A6DSP BOARD :55-0752054-20-00A7DSP BOARD :55-0752054-20-00A8DSP BOARD :55-0752054-20-01DSP BOARD :55-0752054-20-02CAUSE(S)No layout changeAdd RC of digital inAdd Diode of 8415 RSTNo layout changeNo layout changeSERIAL NUMBERR28T75200001-R28T75200280R28T75200401-R28T75200481R28T75200281-R28T75200400R28T75200482-R28T75201253R2XT75203301-R2XT75203460R28T75201254-R29T75202800R2XT75202801-R2XT75203300R2XT75203461-R2XT75203514R2XT75203515-R2XT75204550R2YT75204551-R2YT75205594R2YT75207629-R2YT75207685R2ZT75205595-R2ZT75206600R31T75206601-R31T75207100R32T75207101-R32T75207600R33T75207601-R33T75207727R34T75207728-R34T75209227R37T75209228-R37T75210377R38T75210378-R38T7521066726PCB LAYOUTDSP BOARD (ISSUE 6)COMPONENT SIDECOPPER SIDE27PCB LAYOUTDSP BOARD (ISSUE 7)COMPONENT SIDECOPPER SIDE28PCB LAYOUTDSP BOARD (ISSUE 8)COMPONENT SIDECOPPER SIDE29PCB LAYOUTDSP BOARD (PN-01)COMPONENT SIDECOPPER SIDE30PCB LAYOUTDSP BOARD (PN-02)COMPONENT SIDECOPPER SIDE31E C B2SC1815E C BRN1241DTA114ESAE C BSCHEMATIC DIAGRAMDSP BOARD (ISSUE 6)32SCHEMATIC DIAGRAMDSP BOARD (ISSUE 7)E C B2SC1815E C BRN1241DTA114ESAE C B33SCHEMATIC DIAGRAMDSP BOARD (ISSUE 8)E C B2SC1815E C BRN1241DTA114ESAE C B34SCHEMATIC DIAGRAMDSP BOARD (PN-01)E C B2SC1815E C BRN1241DTA114ESAE C B35SCHEMATIC DIAGRAMDSP BOARD (PN-02)E C B2SC1815E C BRN1241DTA114ESAE C B36VERSION HISTORYAUDIO BOARDISSUEISSUE 6ISSUE 7ISSUE 8PN-01PN-02PN-03DESC. / PART NO.AUDIO BOARD :55-0752113-10-00A6AUDIO BOARD :55-0752113-10-00A7AUDIO BOARD :55-0752113-10-00A8AUDIO BOARD :55-0752113-10-01AUDIO BOARD :55-0752113-10-02AUDIO BOARD :55-0752113-10-03CAUSE(S)Add Oamp for Tape OutNo layout changeNo layout changeNo layout changeNo layout changeSERIAL NUMBERR28T75200001-R28T75200280R28T75200401-R28T75200481R28T75200281-R28T75200400R28T75200482-R28T75201253R2XT75203301-R2XT75203460R28T75201254-R29T75202800R2XT75202801-R2XT75203300R2XT75203461-R2XT75203514R2XT75203515-R2XT75204550R2YT75204551-R2YT75205594R2YT75207629-R2YT75207685R2ZT75205595-R2ZT75206600R31T75206601-R31T75207100R32T75207101-R32T75207600R33T75207601-R33T75207727R34T75207728-R34T75209227R37T75209228-R37T75210377R38T75210378-R38T7521066737PCB LAYOUTAUDIO BOARD (ISSUE 6)AUDIO BOARD (ISSUE 7)38PCB LAYOUTAUDIO BOARD (ISSUE 8)AUDIO BOARD (PN-01)39PCB LAYOUTAUDIO BOARD (PN-02)AUDIO BOARD (PN-03)40SCHEMATIC DIAGRAMAUDIO BOARD (ISSUE 6)DTA144ESADTC144ESAE C B41SCHEMATIC DIAGRAMAUDIO BOARD (ISSUE 7)DTA144ESADTC144ESAE C B42SCHEMATIC DIAGRAMAUDIO BOARD (ISSUE 8)DTA144ESADTC144ESAE C B43SCHEMATIC DIAGRAMAUDIO BOARD (PN-01 - PN-03)DTA144ESADTC144ESAE C B44VERSION HISTORYDIGITAL IN / OUT BOARDISSUEISSUE 6ISSUE 7ISSUE 8PN-01PN-02DESC. / PART NO.DIGITAL I/O BOARD :55-0752373-10-00A6DIGITAL I/O BOARD :55-0752373-10-00A7AUDIO BOARD :55-0752373-10-00A8AUDIO BOARD :55-0752373-10-01AUDIO BOARD :55-075373-10-02CAUSE(S)Add resistor of DIGITAL IN 4No layout changeNo layout changeNo layout changeSERIAL NUMBERR28T75200001-R28T75200280R28T75200401-R28T75200481R28T75200281-R28T75200400R28T75200482-R28T75201253R2XT75203301-R2XT75203460R28T75201254-R29T75202800R2XT75202801-R2XT75203300R2XT75203461-R2XT75203514R2XT75203515-R2XT75204550R2YT75204551-R2YT75205594R2YT75207629-R2YT75207685R2ZT75205595-R2ZT75206600R31T75206601-R31T75207100R32T75207101-R32T75207600R33T75207601-R33T75207727R34T75207728-R34T75209227R37T75209228-R37T75210377R38T75210378-R38T75210667PCB LAYOUTDIGITAL IN / OUT BOARD (ISSUE 6)45PCB LAYOUTDIGITAL IN / OUT BOARD (ISSUE 7)DIGITAL IN / OUT BOARD (ISSUE 8)DIGITAL IN / OUT BOARD (PN-01)DIGITAL IN / OUT BOARD (PN-02)46SCHEMATIC DIAGRAMDIGITAL IN / OUT BOARD (ISSUE 6)47SCHEMATIC DIAGRAMDIGITAL IN / OUT BOARD (ISSUE 7)48PCB LAYOUTDIGITAL IN / OUT BOARD (ISSUE 8)49PCB LAYOUTDIGITAL IN / OUT BOARD (PN-01)50PCB LAYOUTDIGITAL IN / OUT BOARD (PN-02)51VERSION HISTORYPRE-OUT BOARDISSUEISSUE 6ISSUE 7ISSUE 8PN-01PN-02DESC. / PART NO.PRE-OUT BOARD :55-0752373-10-00A6PRE-OUT BOARD :55-0752373-10-00A7PRE-OUT BOARD :55-0752373-10-00A8PRE-OUT BOARD :55-0752373-10-01PRE-OUT BOARD :55-0752373-10-02CAUSE(S)Add Diode on +12VAdd Diode on -12VNo layout changeNo layout changeAdd supply C.Cap C761, C762SERIAL NUMBERR28T75200001-R28T75200280R28T75200401-R28T75200481R28T75200281-R28T75200400R28T75200482-R28T75201253R2XT75203301-R2XT75203460R28T75201254-R29T75202800R2XT75202801-R2XT75203300R2XT75203461-R2XT75203514R2XT75203515-R2XT75204550R2YT75204551-R2YT75205594R2YT75207629-R2YT75207685R2ZT75205595-R2ZT75206600R31T75206601-R31T75207100R32T75207101-R32T75207600R33T75207601-R33T75207727R34T75207728-R34T75209227R37T75209228-R37T75210377R38T75210378-R38T7521066752PCB LAYOUTPRE-OUT BOARD (ISSUE 6)PRE-OUT BOARD (ISSUE 7)53PCB LAYOUTPRE-OUT BOARD (ISSUE 8)PRE-OUT BOARD (PN-01)54PCB LAYOUTPRE-OUT BOARD (PN-02)55SCHEMATIC DIAGRAMPRE-OUT BOARD (ISSUE 6)56SCHEMATIC DIAGRAMPRE-OUT BOARD (ISSUE 7)57SCHEMATIC DIAGRAMPRE-OUT BOARD (ISSUE 8)58SCHEMATIC DIAGRAMPRE-OUT BOARD (PN-01)59SCHEMATIC DIAGRAMPRE-OUT BOARD (PN-02)? 1 Q701 module with flying leads ? 1 black foam block, with double sided tape on two sides ? 1 set of instructions When Q701 becomes defective, the T752 will turn on, but he VFD will not light up. The purpose of replacing the transistor Q701 with a module is to facilitate a more reliable and quicker repair process with a minimum of parts disturbance, if and when Q701 becomes defective. ? J1 is DC output ? J2 is AC input ? J3 is ground ? Connect the long ground wire to the DSP ground, top right hand side of the DSP module ? Connect the DC Output to jumper JMP138 be sure not to heat up the solder connections on the bottom of the main PCB: Use heat-sink tongs. ? Tap into the AC Input to the AC source wire #10 of cable AC17.6V2 Service Hint for replacing Q701 in T752/T762 with 95-0907627-12-0195-0907627-12-01 ? Cut out the following parts: 1. Diodes D709 and D710 2. Q701 (cut out or pull out) 3. Cut out R702