《NAD-T762-avr-sma 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《NAD-T762-avr-sma 维修电路原理图.pdf（18页珍藏版）》请在收音机爱好者资料库上搜索。
1、1REISSUE DATE: JULY 2008VERSION HISTORY . 2PCB LAYOUT - DSP BOARD (ISSUE 8 - 10) . 3 - 5PCB LAYOUT - KEYBOARD (ISSUE 8 - 10) . 6 - 8SCHEMATIC DIAGRAM - DSP BOARD (ISSUE 8 - 10) .9 - 11SCHEMATIC DIAGRAM - KEYBOARD (ISSUE 8 - 10) . 12 - 14NEW DSP BOARD AND DSP SCHEMATIC (SERVICE PART REPLACEMENT) . 15
2、-16REPLACEMENT ASSEMBLY FOR Q701 . 17-18 SERVICE MANUAL ADDENDUMRadioFans.CN 收音机爱 好者资料库2VERSION HISTORYISSUEISSUE 6ISSUE 7ISSUE 8ISSUE 9ISSUE 10DESC. / PART NO.DSP :55-0762054-20-00(CNC BOARD)KEYBOARD :55-0762003-20-00(CNC BOARD)DSP :55-0762054-20-00(TOOLED PCB)KEYBOARD :55-0762003-20-00(TOOLED PCB)
3、DSP :55-0762054-20-01(TOOLED PCB)KEYBOARD :55-0762003-20-01(TOOLED PCB)DSP :55-0762054-20-02(TOOLED PCB)KEYBOARD :55-0762003-20-02(TOOLED PCB)DSP :55-0762054-20-03(TOOLED PCB)KEYBOARD :55-0762003-20-03(TOOLED PCB)CAUSE(S)Change FFC connector to pinconnectorChange FFC connector to pinconnectorMove A/
4、D Component Add Coil in Digital InputDel Wire form Crystal toChassisAdd Supply E.CapAdd Transistor for IR_OUTAdd test pinAdd missing connection ofR229.2 to C223.1Add test pinAdd C.Cap C1181 for safetyissueSwap connection ofTRIG_OUT_2 / TRIG_OUT_3Add E.Cap C1182 foreliminate Pop noiseDelete Component
5、 of IR_OUTC223 Change to Axial TypeSERIAL NUMBERR2ZT76200001-R2ZT76200400R2ZT76200401-R2ZT76201400R31T76201401-R31T76202198R33T76202201-R33T76204100R35T76214101-R35T76214600NOTES:The PCBs are compatible use from Issue 7 to 10. (Issue 6 is not a compatible with later ssues)The DSP assemblies are keyb
6、oard specific. Please refer to pages 15 and 16 for jumper settings.iOriginal P/N Interim P/N Final P/N with Description80-0907620-02-00 800-KEBD62-00 50-922-0762-90 - T762(i) KEYBOARD ASSEMBLY80-0907620-32-00 800-LEBD62-00 50-915-0762-90 - T762(i) LED BOARD ASSEMBLY80-0907620-42-00 800-VEBD62-00 50-
7、920-0762-90 - T762(i) COMPOSITE VIDEO BOARD ASSEMBLY80-0907620-63-00 800-POBD62-00 50-924-0762-90 - T762(i) PRE-OUT BOARD ASSEMBLY80-0907620-65-00 800-DSBD62-00see pages 15-16 - T762(i) ORIGNAL DSP ASSEMBLY (NLA)95-0907625-12-01 OHF-N0762S-01 50-940-1762-90 - T762AH POWER AMP MODULE W/O HSN/A OHF-N0
8、762I-01 50-940-0762-90 - T762(i) POWER AMP MODULE RadioFans.CN 收音机爱 好者资料库3PCB LAYOUTDSP BOARD (ISSUE 8)COPPER SIDECOMPONENT SIDE4PCB LAYOUTDSP BOARD (ISSUE 9)COPPER SIDECOMPONENT SIDE5PCB LAYOUTDSP BOARD (ISSUE 10)COPPER SIDECOMPONENT SIDE6PCB LAYOUTKEYBOARD (ISSUE 8)COPPER SIDECOMPONENT SIDE7PCB LA
9、YOUTKEYBOARD (ISSUE 9)COPPER SIDECOMPONENT SIDE8PCB LAYOUTKEYBOARD (ISSUE 10)COPPER SIDECOMPONENT SIDE9SCHEMATIC DIAGRAMDSP BOARD (ISSUE 8)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 5%.10SCHEMATIC DIAGRAMDSP BOARD (ISSU
10、E 9)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.11SCHEMATIC DIAGRAMDSP BOARD (ISSUE 10)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.1
11、2SCHEMATIC DIAGRAMKEYBOARD (ISSUE 8)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.13SCHEMATIC DIAGRAMKEYBOARD (ISSUE 9)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHER
12、WISE SPECIFIED, ARE 50V, 10%.SCHEMATIC DIAGRAMKEYBOARD (ISSUE 10)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.PCB LAYOUTDSP BOARD (FINAL SERVICE PARTS VERSION)Part Number: 50-918-0762-90 T762/T762i DSP (For ALi Keyboa
13、rds, backwards compatible via jumper option below)Part Number: 50-918-1762-90 T762/T762i DSP (For ATMEL Keyboards, forwards compatible via jumper option below)COPPER SIDE (SHOWING JUMPER OPTION)COMPONENT SIDE15For ALI keyboard T762 & T762i; R1251 - N. I. , R1252 - R1254 - 0 ohmFor ATMEL keyboard mod
14、el s, R1251 - 0 ohm, R1252 - R1254 - N. I.ALL +6dB GAIN(NOTE 1)(NOTE 1): 68pF used in first 100pcs T773II production, refer to HF-EN-N2773-006NOTE 2NOTE 2NOTE 2NOTE 2(NOTE 2): For ALI k eyboard T762 & T762i; R1251 - N.I., R1252 - R1254 - 0 ohm(NOTE 2): For ATM EL k eyboard models, R1251 - 0 ohm, R12
15、52 - R1254 - N.I.1V D 12D GND 13XM T9 584EM WR5EM OE6SCD IN7SCCLK8EM AD 79EM AD 610EM AD 511EM AD 412V D 213D GND 214EM AD 315EM AD 216EM AD 117EM AD 018CS19SCD OU T20INTREQ21EXTM EM22SD ATAN123V D 324D GND 325SCLKN126LRCLKN127SD ATAN228SCLKN229LRCLKN230CLKIN31CLKSEL32FILT233FILT134V A35AGND36RESET3
16、7D D38D C39AU D ATA240AU D ATA141AU D ATA042LRCLK43SCLK44M CLKU 1001CS49 326-CLC10610.1uC10621u50VC10030.1uC10041u50VR10014.7kR10024.7kR10033.3kR10043.3kR10053.3kR10063.3k1D IR2A03A14A25A36A47A58A69A710GND11B712B613B514B415B316B217B118B019OE20V CCU 100274LV C245A1D IR2A03A14A25A36A47A58A69A710GND11B
17、712B613B514B415B316B217B118B019OE20V CCU 100374LV C245A1SELECT2A03B04Y 05A16B17Y 18GND9Y 210B211A212Y 313B314A315O/ P_ENABLE16V CCU 100474HC1571CD OU T2CS3EM PH4RXP05RXNO6V A7AGND8FILT9RST10RM CK11RERR12RXP113RXP214RXP315RXP416OSCLK17OLRCK18SD OU T19INT20U21OM CK22D GND23V D24H/ S25RXP526RXP627CD IN
18、28CCLKU 1005CS8415AR100733R100810kC1006220pC10070.01uR1009200kC10100.01uR10131.2kC101210u16V1V PP2A163A154A125A76A67A58A49A310A211A112A013Q 014Q 115Q 216V SS17Q 318Q 419Q 520Q 621Q 722E23A1024G25A1126A927A828A1329A1430A1731P32V CCU 1007SST27SF020(256K x 8)1OE2D 03D 14D 25D 36D 47D 58D 69D 710GND11CL
19、K12Q 713Q 614Q 515Q 416Q 317Q 218Q 119Q 020V CCU 100874LV Q 5741OE2D 03D 14D 25D 36D 47D 58D 69D 710GND11CLK12Q 713Q 614Q 515Q 416Q 317Q 218Q 119Q 020V CCU 100974LV Q 574C10170.1uR102010kC10180.1uC10190.1uC10203.3u 50VC10213.3u 50VR102210kR10232.2kC10223300p3+2-1U 1010-ANJM 5532MR1024620R102610kR102
20、72.2kR10282.2kC10241000pC10251500pR10302.2kC10263300p5+6-7U 1010-BNJM 5532MR1031620R10332.2kC10281000pC10291500pR10352.2kC10303.3u 50VC10313.3u 50VR103610kR10372.2kC10323300p3+2-1U 1011-ANJM 5532MR1038620R104010kR10412.2kR10422.2kC10341000pC10351500pR10442.2kC10363300p5+6-7U 1011-BNJM 5532MR1045620R
21、10472.2kC10381000pC10391500pR10492.2kC10403.3u 50VC10413.3u 50VR105010kR10512.2kC10423300p3+2-1U 1012-ANJM 5532MR1052620R105410kR10552.2kR10562.2kC10441000pC10451500pR10582.2kC10463300p5+6-7U 1012-BNJM 5532MR1059620R10612.2kC10481000pC10491500pR10632.2kC10503.3u 50VC10513.3u 50VR106410kR10652.2kC105
22、23300p3+2-1U 1013-ANJM 5532MR1066620R106810kR10692.2kR10702.2kC10541000pC10551500pR10722.2kC10563300p5+6-7U 1013-BNJM 5532MR1073620R10752.2kC10581000pC10591500pR10772.2k1D IR2A03A14A25A36A47A58A69A710GND11B712B613B514B415B316B217B118B019OE20V CCU 101474LV C245AECBQ 10012SC1815YECBQ 10022SC1815YR1078
23、2.2kR10794.7kR10802.2kR10813.3kR10821.8kAD JOU TINU 1015LM 317C1060470u16VR10834.7kECBQ 10032SC1815YR10842.2kC107210u16VR109 02.7kR109 12.7kAD JOU TINU 1020LM 317C1073470u16VC10740.1uC10750.1uC10760.1uC10780.1uC107910u16VC10820.1uC10810.1uC10831u50VR1182100R1183100R1184100C109 00.1uC109 13.3u50VC109
24、 30.1uC109 43.3u50VC109 50.1uC109 61u50VL100210uHL100310uHL100510uHC109 90.1uC11001u50VC1101100pC1102100pC1103100pC1104100pC1105100pC1106100pC1107100pC1108100p84U 1010-CNJM 5532M84U 1011-CNJM 5532M84U 1012-CNJM 5532M84U 1013-CNJM 5532M84U 1023-CNJM 5532MC110947u16VC111047u16VC111147u16VC111247u16VC1
25、1144700pR102110k1234567891011121314151617181920J604BTo M ulti-Ch J604AC1117100u16VR111410kC1118N.I.16VC1119N.I.16VR1115100C1121220pC11240.1uC11250.1uC11260.1uC11270.1uC11280.1uC1129N.I.C11304700pC11314700pV +NCOU TGNDX100112.288M HzCrystal OscillatorL100710uHC11321000pC1133N.I.16V1RST2V L3SD ATA4SCL
26、K5LRCK6M CLK7M 38M 29M 110M 011FILT+12CM OU NT13BM U TEC14AOU TB-15AOU TB+16AGND17V A18AOU TA+19AOU TA-20AM U TECU 1025CS439 2C113710u 16VC113810u 16VR11165.62kR11175.62kR11181.18kR11191.18kC11392700pR11201.5k3+2-1U 1028-ANJM 5532MC1142560pR11211.5kC1141560pC11402700pC114310u 16VC114410u 16VR11225.6
27、2kR11235.62kR11241.18kR11251.18kC11452700pR11261.5k5+6-7U 1028-BNJM 5532MC1148560pR11271.5kC1147560pC11462700pC11551u50V1V LS2SD IN13SD IN24SD IN35SCLK6LRCK7M CLK8V D9GND 110RST11D IF1/ SCL/ CCLK12D IF0/ SD A/ CD IN13M 1/ AD 0/ CS14V LC15M 216FILT+17V Q18M U TEC319AOU TB320AOU TA321GND 222V A23AOU T
28、B224AOU TA225M U TEC226AOU TB127AOU TA128M U TEC1U 1026CS4360C11342200pC11352200pC11362200p84U 1028-CNJM 5532MC10130.1uC10141u50VC10150.1uC10161u50VR113110kR113210kR113310kR113410kR113510kR113610kR113710kR113810kR10100C10080.1uC10090.1uR1113100R1112100C1166N.I.R11661k1234J1010Bto D igitalC10052.2u16
29、VR1181100R109 2100R109 3100R109 4100D 1001N.I.R119 133R119 233R119 333R119 43312J1009 BTo D IGITAL12345678910111213141516171819202122232425262728J203Bto KeyboardR119 52kR119 72kR119 62kR119 82kC10110.1u_(M )63VR109 90L10090C1181N.I.J10010R1221 2.7kR12224.7kC11600.01u50VR1231 4.7kC1201 330pR12324.7kR
30、12344.7kC1202 330pR1233 4.7kR12394.7kC1205 330pR12404.7kR12424.7kC1206 330pR1241 4.7kR1243 4.7kC1207 330pR12444.7kR12464.7kC1208 330pR1245 4.7kR12364.7kC1203 330pR1235 4.7kR1237 4.7kC1204 330pR12384.7kL100110uHL100410uHL101010uHC11521u_(M )63VC11510.1uC11570.1uC11561u_(M )63VR113010kC109 21u_(M )63V
31、C11500.1uC11780.1uC11541u_(M )63VC11770.1uC11531u_(M )63VC1186N.I.C1185N.I.C1184N.I.C1183100pR121675R12150R121475R1213751M 02M CLK3V L4SD OU T5GND6V D7SCLK8LRCK9RST10AINL11V Q12AINR13V A14REF_GND15FILT+16M 1U 1027CS5341R1224100kR1223100kR1218 634C1188470p C0GR1220N.I.R1219N.I.C1187470p C0GR1217634R1
32、176100kR1175100kR117247kR117147kC11760.01uC0GR117447kC11724.7u16VR11789 15+6-7U 1023-BNJM 5532MC11750.01uC0G123J715BTo M ainboardR117347kC11714.7u16VR11779 13+2-1U 1023-ANJM 5532ML10115.6uHC120968pC12100.1u_(M )63VL101210uHL101510uHL101410uHR1248N.I.R12470R12490R1250N.I.L101310uHR12510R1254N.I.R1252
33、N.I.R1253N.I.AGND+2.5V DD GNDAGND+2.5V DD GNDD GND+3.5V DD GNDD GNDAGNDD GNDAGNDAGNDD GND+8VD GNDD GNDD GNDD GND+5V D+5V D+3.5V DD GNDD GNDD GND+3.5V DD GNDD GNDD GND+8VD GND+2.5V DD GND+2.5V D+5V DAGNDAGNDAGND+5V DAGND+3.5V DD GNDAGNDAGNDAGND+12V+12V-12V-12VD GNDAGND+3.5V D+5V DD GND+5V D+12V -12V+
34、3.5V D+2.5V DAGNDD GND+5V DD GNDD GNDCENAGNDAGNDAGNDAGNDAGNDAGNDAGNDAGND+12V-12VSU BSLSRBSLBSRFLFR+12V-12VD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GND+3.5V DD GND+8VD GND+3.5V D+3.5V DAGNDAGNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GNDD GND+2.5V DD GNDD GNDD GNDAGNDD GND+5V D+5V D251_C251_B2
35、51_AD GNDD GNDD GNDD GNDCD INCLK8415_CD OU T8415_CS49 326_CS49 326_RESETINTREQABOOTD / A49 326_CD OU T251_A251_B251_CA17A16A15D GND4360/ 439 2/ 5333/ 8415_RST+8V+8V+5V D+5V DD GND+5V DD GND+2.5V AAGNDAGNDAGNDAGND+5V D+3.5V D+3.5V DD GNDD GNDAGNDAGND+3.5V DD GNDAGNDAGNDAGNDAGNDAGNDAGNDAGNDD GND+3.5V
36、D+5V D+5V D+3.5V D16SCHEMATIC DIAGRAMDSP BOARD (FINAL SERVICE PARTS VERSION)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 5%.? 1 Q701 module with flying leads ? 1 black foam block, with double sided tape on two sides ? 1 s
37、et 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
38、 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
39、 AC source wire #10 of cable AC17. 6V2 Service Hint for replacing Q701 in T752/T762 with 95-0907627-12-0195- 0907627- 12- 0117 ? Cut out the following parts: 1. Diodes D709 and D710 2. Q701 (cut out or pull out) 3. Cut out R702 18Anot her vi ew of t appi ng i nt o t he AC I nput s ourc e wi re #10 of c abl e AC17.6V2
免费区 
