NAD-T752-avr-sma2 电路图 维修手册.pdf

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1、1 ISSUEDATE:18MAY2005 SERVICE MANUAL ADDENDUM RadioFans.CN 收音机爱 好者资料库 2 MAIN BOARD (ISSUE 6 - PN-01) VERSION HISTORY . 3 PCB LAYOUT. 4 - 7 SCHEMATIC DIAGRAM.8 - 11 TRIGGER (ISSUE 6 - PN-01) VERSION HISTORY . 12 PCB LAYOUT. 13 SCHEMATIC DIAGRAM. 14 - 15 KEYBOARD (ISSUE 6 - PN-01) VERSION HISTORY . 16

2、 PCB LAYOUT. 17 - 20 SCHEMATIC DIAGRAM. 21 - 24 DSP (ISSUE 6 - PN-02) VERSION HISTORY . 25 PCB LAYOUT. 26 - 30 SCHEMATIC DIAGRAM. 31 - 35 AUDIO (ISSUE 6 - PN-03) VERSION HISTORY . 36 PCB LAYOUT. 37 - 39 SCHEMATIC DIAGRAM. 40 - 43 DIGITAL IN/OUT (ISSUE 6 - PN-02) VERSION HISTORY . 44 PCB LAYOUT. 44 -

3、 45 SCHEMATIC DIAGRAM. 46 - 50 PRE-OUT (ISSUE 6 - PN-02) VERSION HISTORY . 51 PCB LAYOUT. 52 - 54 SCHEMATIC DIAGRAM. 55 - 59 CONTENTS NOTE PART NUMBER CHANGE: Original P/N Interim P/N Final P/N with Description 80-0907520-02-00 800-KEBD52-00 50-922-0752-90 - T752 KEYBOARD ASSEMBLY 80-0907520-63-00 8

4、00-POBD52-00 50-924-0752-90 - T752 PRE-OUT BOARD ASSEMBLY RadioFans.CN 收音机爱 好者资料库 3 VERSION HISTORY MAIN BOARD ISSUE ISSUE 6 ISSUE 7 ISSUE 8 PN-01 DESC. / PART NO. MAIN BOARD : 55-0752003-10-00 A6 MAIN BOARD : 55-0752003-10-00 A7 MAIN BOARD : 55-0752003-10-00 A8 MAIN BOARD : 55-0752003-10-01 CAUSE(S

5、) Add +5.6V to Pre-Out Add Connector option for DSP No layout change SERIAL NUMBER R28T75200001-R28T75200280 R28T75200401-R28T75200481 R28T75200281-R28T75200400 R28T75200482-R28T75201253 R2XT75203301-R2XT75203460 R28T75201254-R29T75202800 R2XT75202801-R2XT75203300 R2XT75203461-R2XT75203514 R2XT75203

6、515-R2XT75204550 R2YT75204551-R2YT75205594 R2YT75207629-R2YT75207685 R2ZT75205595-R2ZT75206600 R31T75206601-R31T75207100 R32T75207101-R32T75207600 R33T75207601-R33T75207727 R34T75207728-R34T75209227 R37T75209228-R37T75210377 R38T75210378-R38T75210667 RadioFans.CN 收音机爱 好者资料库 4 PCB LAYOUT MAIN BOARD (

7、ISSUE 6) 5 PCB LAYOUT MAIN BOARD (ISSUE 7) 6 PCB LAYOUT MAIN BOARD (ISSUE 8) 7 PCB LAYOUT MAIN BOARD (PN-01) 8 SCHEMATIC DIAGRAM MAIN BOARD (ISSUE 6) E B C SS8050 9 SCHEMATIC DIAGRAM MAIN BOARD (ISSUE 7) E B C SS8050 10 SCHEMATIC DIAGRAM MAIN BOARD (ISSUE 8) E B C SS8050 11 SCHEMATIC DIAGRAM MAIN BO

8、ARD (PN-01) E B C SS8050 12 VERSION HISTORY TRIGGER BOARD ISSUE ISSUE 6 ISSUE 7 ISSUE 8 PN-01 DESC. / PART NO. TRIGGER BOARD : 55-0752003-10-00 A6 TRIGGER BOARD : 55-0752003-10-00 A7 TRIGGER BOARD : 55-0752003-10-00 A8 TRIGGER BOARD : 55-0752003-10-01 CAUSE(S) Delete R354 (Trigger in) Circuit update

9、 (IR OUT) Add Resistor to GND (Trigger IN/OUT) Delete C353 (IR IN) SERIAL NUMBER R28T75200001-R28T75200280 R28T75200401-R28T75200481 R28T75200281-R28T75200400 R28T75200482-R28T75201253 R2XT75203301-R2XT75203460 R28T75201254-R29T75202800 R2XT75202801-R2XT75203300 R2XT75203461-R2XT75203514 R2XT7520351

10、5-R2XT75204550 R2YT75204551-R2YT75205594 R2YT75207629-R2YT75207685 R2ZT75205595-R2ZT75206600 R31T75206601-R31T75207100 R32T75207101-R32T75207600 R33T75207601-R33T75207727 R34T75207728-R34T75209227 R37T75209228-R37T75210377 R38T75210378-R38T75210667 13 PCB LAYOUT TRIGGER BOARD (ISSUE 6) TRIGGER BOARD

11、 (ISSUE 8) TRIGGER BOARD (PN-01) TRIGGER BOARD (ISSUE 7) 14 DTC123ESA E C B DTC123ESA E C B SCHEMATIC DIAGRAM TRIGGER BOARD (ISSUE 6) TRIGGER BOARD (ISSUE 7) 15 DTC123ESA E C B SCHEMATIC DIAGRAM TRIGGER BOARD (ISSUE 8) DTC123ESA E C B TRIGGER BOARD (PN-01) 16 VERSION HISTORY KEYBOARD ISSUE ISSUE 6 I

12、SSUE 7 ISSUE 8 PN-01 DESC. / PART NO. KEYBOARD : 55-0752003-20-00 A6 KEYBOARD : 55-0752003-20-00 A7 KEYBOARD : 55-0752003-20-00 A8 KEYBOARD : 55-0752003-20-01 CAUSE(S) New connection of THERMAL No layout change Add RC of Rotary Encoder SERIAL NUMBER R28T75200001-R28T75200280 R28T75200401-R28T7520048

13、1 R28T75200281-R28T75200400 R28T75200482-R28T75201253 R2XT75203301-R2XT75203460 R28T75201254-R29T75202800 R2XT75202801-R2XT75203300 R2XT75203461-R2XT75203514 R2XT75203515-R2XT75204550 R2YT75204551-R2YT75205594 R2YT75207629-R2YT75207685 R2ZT75205595-R2ZT75206600 R31T75206601-R31T75207100 R32T75207101

14、-R32T75207600 R33T75207601-R33T75207727 R34T75207728-R34T75209227 R37T75209228-R37T75210377 R38T75210378-R38T75210667 17 PCB LAYOUT KEYBOARD (ISSUE 6) COMPONENT SIDECOPPER SIDE 18 PCB LAYOUT KEYBOARD (ISSUE 7) COMPONENT SIDECOPPER SIDE 19 PCB LAYOUT KEYBOARD (ISSUE 8) COMPONENT SIDECOPPER SIDE 20 PC

15、B LAYOUT KEYBOARD (PN-01) COMPONENT SIDECOPPER SIDE 21 SCHEMATIC DIAGRAM KEYBOARD (ISSUE 6) E C B 2SC1815 22 SCHEMATIC DIAGRAM KEYBOARD (ISSUE 7) E C B 2SC1815 23 SCHEMATIC DIAGRAM KEYBOARD (ISSUE 8) E C B 2SC1815 24 SCHEMATIC DIAGRAM KEYBOARD (PN-01) E C B 2SC1815 25 VERSION HISTORY DSP BOARD ISSUE

16、 ISSUE 6 ISSUE 7 ISSUE 8 PN-01 PN-02 DESC. / PART NO. DSP BOARD : 55-0752054-20-00 A6 DSP BOARD : 55-0752054-20-00 A7 DSP BOARD : 55-0752054-20-00 A8 DSP BOARD : 55-0752054-20-01 DSP BOARD : 55-0752054-20-02 CAUSE(S) No layout change Add RC of digital in Add Diode of 8415 RST No layout change No lay

17、out change SERIAL NUMBER R28T75200001-R28T75200280 R28T75200401-R28T75200481 R28T75200281-R28T75200400 R28T75200482-R28T75201253 R2XT75203301-R2XT75203460 R28T75201254-R29T75202800 R2XT75202801-R2XT75203300 R2XT75203461-R2XT75203514 R2XT75203515-R2XT75204550 R2YT75204551-R2YT75205594 R2YT75207629-R2

18、YT75207685 R2ZT75205595-R2ZT75206600 R31T75206601-R31T75207100 R32T75207101-R32T75207600 R33T75207601-R33T75207727 R34T75207728-R34T75209227 R37T75209228-R37T75210377 R38T75210378-R38T75210667 26 PCB LAYOUT DSP BOARD (ISSUE 6) COMPONENT SIDE COPPER SIDE 27 PCB LAYOUT DSP BOARD (ISSUE 7) COMPONENT SI

19、DE COPPER SIDE 28 PCB LAYOUT DSP BOARD (ISSUE 8) COMPONENT SIDE COPPER SIDE 29 PCB LAYOUT DSP BOARD (PN-01) COMPONENT SIDE COPPER SIDE 30 PCB LAYOUT DSP BOARD (PN-02) COMPONENT SIDE COPPER SIDE 31 E C B 2SC1815 E C B RN1241 DTA114ESA E C B SCHEMATIC DIAGRAM DSP BOARD (ISSUE 6) 32 SCHEMATIC DIAGRAM D

20、SP BOARD (ISSUE 7) E C B 2SC1815 E C B RN1241 DTA114ESA E C B 33 SCHEMATIC DIAGRAM DSP BOARD (ISSUE 8) E C B 2SC1815 E C B RN1241 DTA114ESA E C B 34 SCHEMATIC DIAGRAM DSP BOARD (PN-01) E C B 2SC1815 E C B RN1241 DTA114ESA E C B 35 SCHEMATIC DIAGRAM DSP BOARD (PN-02) E C B 2SC1815 E C B RN1241 DTA114

21、ESA E C B 36 VERSION HISTORY AUDIO BOARD ISSUE ISSUE 6 ISSUE 7 ISSUE 8 PN-01 PN-02 PN-03 DESC. / PART NO. AUDIO BOARD : 55-0752113-10-00 A6 AUDIO BOARD : 55-0752113-10-00 A7 AUDIO BOARD : 55-0752113-10-00 A8 AUDIO BOARD : 55-0752113-10-01 AUDIO BOARD : 55-0752113-10-02 AUDIO BOARD : 55-0752113-10-03

22、 CAUSE(S) Add Oamp for Tape Out No layout change No layout change No layout change No layout change SERIAL NUMBER R28T75200001-R28T75200280 R28T75200401-R28T75200481 R28T75200281-R28T75200400 R28T75200482-R28T75201253 R2XT75203301-R2XT75203460 R28T75201254-R29T75202800 R2XT75202801-R2XT75203300 R2XT

23、75203461-R2XT75203514 R2XT75203515-R2XT75204550 R2YT75204551-R2YT75205594 R2YT75207629-R2YT75207685 R2ZT75205595-R2ZT75206600 R31T75206601-R31T75207100 R32T75207101-R32T75207600 R33T75207601-R33T75207727 R34T75207728-R34T75209227 R37T75209228-R37T75210377 R38T75210378-R38T75210667 37 PCB LAYOUT AUDI

24、O BOARD (ISSUE 6) AUDIO BOARD (ISSUE 7) 38 PCB LAYOUT AUDIO BOARD (ISSUE 8) AUDIO BOARD (PN-01) 39 PCB LAYOUT AUDIO BOARD (PN-02) AUDIO BOARD (PN-03) 40 SCHEMATIC DIAGRAM AUDIO BOARD (ISSUE 6) DTA144ESA DTC144ESA E C B 41 SCHEMATIC DIAGRAM AUDIO BOARD (ISSUE 7) DTA144ESA DTC144ESA E C B 42 SCHEMATIC

25、 DIAGRAM AUDIO BOARD (ISSUE 8) DTA144ESA DTC144ESA E C B 43 SCHEMATIC DIAGRAM AUDIO BOARD (PN-01 - PN-03) DTA144ESA DTC144ESA E C B 44 VERSION HISTORY DIGITAL IN / OUT BOARD ISSUE ISSUE 6 ISSUE 7 ISSUE 8 PN-01 PN-02 DESC. / PART NO. DIGITAL I/O BOARD : 55-0752373-10-00 A6 DIGITAL I/O BOARD : 55-0752

26、373-10-00 A7 AUDIO BOARD : 55-0752373-10-00 A8 AUDIO BOARD : 55-0752373-10-01 AUDIO BOARD : 55-075373-10-02 CAUSE(S) Add resistor of DIGITAL IN 4 No layout change No layout change No layout change SERIAL NUMBER R28T75200001-R28T75200280 R28T75200401-R28T75200481 R28T75200281-R28T75200400 R28T7520048

27、2-R28T75201253 R2XT75203301-R2XT75203460 R28T75201254-R29T75202800 R2XT75202801-R2XT75203300 R2XT75203461-R2XT75203514 R2XT75203515-R2XT75204550 R2YT75204551-R2YT75205594 R2YT75207629-R2YT75207685 R2ZT75205595-R2ZT75206600 R31T75206601-R31T75207100 R32T75207101-R32T75207600 R33T75207601-R33T75207727

28、 R34T75207728-R34T75209227 R37T75209228-R37T75210377 R38T75210378-R38T75210667 PCB LAYOUT DIGITAL IN / OUT BOARD (ISSUE 6) 45 PCB LAYOUT DIGITAL IN / OUT BOARD (ISSUE 7)DIGITAL IN / OUT BOARD (ISSUE 8) DIGITAL IN / OUT BOARD (PN-01)DIGITAL IN / OUT BOARD (PN-02) 46 SCHEMATIC DIAGRAM DIGITAL IN / OUT

29、 BOARD (ISSUE 6) 47 SCHEMATIC DIAGRAM DIGITAL IN / OUT BOARD (ISSUE 7) 48 PCB LAYOUT DIGITAL IN / OUT BOARD (ISSUE 8) 49 PCB LAYOUT DIGITAL IN / OUT BOARD (PN-01) 50 PCB LAYOUT DIGITAL IN / OUT BOARD (PN-02) 51 VERSION HISTORY PRE-OUT BOARD ISSUE ISSUE 6 ISSUE 7 ISSUE 8 PN-01 PN-02 DESC. / PART NO.

30、PRE-OUT BOARD : 55-0752373-10-00 A6 PRE-OUT BOARD : 55-0752373-10-00 A7 PRE-OUT BOARD : 55-0752373-10-00 A8 PRE-OUT BOARD : 55-0752373-10-01 PRE-OUT BOARD : 55-0752373-10-02 CAUSE(S) Add Diode on +12V Add Diode on -12V No layout change No layout change Add supply C.Cap C761, C762 SERIAL NUMBER R28T7

31、5200001-R28T75200280 R28T75200401-R28T75200481 R28T75200281-R28T75200400 R28T75200482-R28T75201253 R2XT75203301-R2XT75203460 R28T75201254-R29T75202800 R2XT75202801-R2XT75203300 R2XT75203461-R2XT75203514 R2XT75203515-R2XT75204550 R2YT75204551-R2YT75205594 R2YT75207629-R2YT75207685 R2ZT75205595-R2ZT75

32、206600 R31T75206601-R31T75207100 R32T75207101-R32T75207600 R33T75207601-R33T75207727 R34T75207728-R34T75209227 R37T75209228-R37T75210377 R38T75210378-R38T75210667 52 PCB LAYOUT PRE-OUT BOARD (ISSUE 6)PRE-OUT BOARD (ISSUE 7) 53 PCB LAYOUT PRE-OUT BOARD (ISSUE 8)PRE-OUT BOARD (PN-01) 54 PCB LAYOUT PRE

33、-OUT BOARD (PN-02) 55 SCHEMATIC DIAGRAM PRE-OUT BOARD (ISSUE 6) 56 SCHEMATIC DIAGRAM PRE-OUT BOARD (ISSUE 7) 57 SCHEMATIC DIAGRAM PRE-OUT BOARD (ISSUE 8) 58 SCHEMATIC DIAGRAM PRE-OUT BOARD (PN-01) 59 SCHEMATIC DIAGRAM PRE-OUT BOARD (PN-02) ? 1 Q701 module with flying leads ? 1 black foam block, with

34、 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

35、 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 95-0907627-12-01 95-0907627-12-01 ? Cut out the following parts: 1. Diodes D709 and D710 2. Q701 (cut out or pull out) 3. Cut out R702