NAD-T762-avr-sma 电路图 维修手册.pdf

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1、1 REISSUE DATE: JULY 2008 VERSION HISTORY . 2 PCB LAYOUT - DSP BOARD (ISSUE 8 - 10) . 3 - 5 PCB LAYOUT - KEYBOARD (ISSUE 8 - 10) . 6 - 8 SCHEMATIC DIAGRAM - DSP BOARD (ISSUE 8 - 10) .9 - 11 SCHEMATIC DIAGRAM - KEYBOARD (ISSUE 8 - 10) . 12 - 14 NEW DSP BOARD AND DSP SCHEMATIC (SERVICE PART REPLACEMEN

2、T) . 15-16 REPLACEMENT ASSEMBLY FOR Q701 . 17-18 SERVICE MANUAL ADDENDUM RadioFans.CN 收音机爱 好者资料库 2 VERSION HISTORY ISSUE ISSUE 6 ISSUE 7 ISSUE 8 ISSUE 9 ISSUE 10 DESC. / PART NO. DSP : 55-0762054-20-00 (CNC BOARD) KEYBOARD : 55-0762003-20-00 (CNC BOARD) DSP : 55-0762054-20-00 (TOOLED PCB) KEYBOARD :

3、 55-0762003-20-00 (TOOLED PCB) 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 pin c

4、onnector Change FFC connector to pin connector Move A/D Component Add Coil in Digital Input Del Wire form Crystal to Chassis Add Supply E.Cap Add Transistor for IR_OUT Add test pin Add missing connection of R229.2 to C223.1 Add test pin Add C.Cap C1181 for safety issue Swap connection of TRIG_OUT_2

5、/ TRIG_OUT_3 Add E.Cap C1182 for eliminate Pop noise Delete Component of IR_OUT C223 Change to Axial Type SERIAL NUMBER R2ZT76200001-R2ZT76200400 R2ZT76200401-R2ZT76201400 R31T76201401-R31T76202198 R33T76202201-R33T76204100 R35T76214101-R35T76214600 NOTES: The PCBs are compatible use from Issue 7 to

6、 10. (Issue 6 is not a compatible with later ssues) The DSP assemblies are keyboard specific. Please refer to pages 15 and 16 for jumper settings. i Original P/N Interim P/N Final P/N with Description 80-0907620-02-00 800-KEBD62-00 50-922-0762-90 - T762(i) KEYBOARD ASSEMBLY 80-0907620-32-00 800-LEBD

7、62-00 50-915-0762-90 - T762(i) LED BOARD ASSEMBLY 80-0907620-42-00 800-VEBD62-00 50-920-0762-90 - T762(i) COMPOSITE VIDEO BOARD ASSEMBLY 80-0907620-63-00 800-POBD62-00 50-924-0762-90 - T762(i) PRE-OUT BOARD ASSEMBLY 80-0907620-65-00 800-DSBD62-00see pages 15-16 - T762(i) ORIGNAL DSP ASSEMBLY (NLA) 9

8、5-0907625-12-01 OHF-N0762S-01 50-940-1762-90 - T762AH POWER AMP MODULE W/O HS N/A OHF-N0762I-01 50-940-0762-90 - T762(i) POWER AMP MODULE RadioFans.CN 收音机爱 好者资料库 3 PCB LAYOUT DSP BOARD (ISSUE 8) COPPER SIDE COMPONENT SIDE RadioFans.CN 收音机爱 好者资料库 4 PCB LAYOUT DSP BOARD (ISSUE 9) COPPER SIDE COMPONENT

9、 SIDE 5 PCB LAYOUT DSP BOARD (ISSUE 10) COPPER SIDE COMPONENT SIDE 6 PCB LAYOUT KEYBOARD (ISSUE 8) COPPER SIDECOMPONENT SIDE 7 PCB LAYOUT KEYBOARD (ISSUE 9) COPPER SIDECOMPONENT SIDE 8 PCB LAYOUT KEYBOARD (ISSUE 10) COPPER SIDECOMPONENT SIDE 9 SCHEMATIC DIAGRAM DSP BOARD (ISSUE 8) NOTE: 1. RESISTORS

10、, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%. 2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 5%. 10 SCHEMATIC DIAGRAM DSP BOARD (ISSUE 9) NOTE: 1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%. 2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%. 11 SCHEMATIC DIA

11、GRAM DSP BOARD (ISSUE 10) NOTE: 1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%. 2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%. 12 SCHEMATIC DIAGRAM KEYBOARD (ISSUE 8) NOTE: 1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%. 2. ALL CERAMIC CAPACITORS, UNLESS OTHERWI

12、SE SPECIFIED, ARE 50V, 10%. 13 SCHEMATIC DIAGRAM KEYBOARD (ISSUE 9) NOTE: 1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%. 2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%. SCHEMATIC DIAGRAM KEYBOARD (ISSUE 10) NOTE: 1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%. 2

13、. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%. PCB LAYOUT DSP BOARD (FINAL SERVICE PARTS VERSION) Part Number: 50-918-0762-90 T762/T762i DSP (For ALi Keyboards, backwards compatible via jumper option below) Part Number: 50-918-1762-90 T762/T762i DSP (For ATMEL Keyboards, forward

14、s compatible via jumper option below) COPPER SIDE (SHOWING JUMPER OPTION) COMPONENT SIDE 15 For ALI keyboard T762 R1251 - N. I. , R1252 - R1254 - 0 ohm For ATMEL keyboard model s, R1251 - 0 ohm, R1252 - R1254 - N. I. ALL +6dB GAIN (NOTE 1) (NOTE 1): 68pF used in first 100pcs T773II production, refer

15、 to HF-EN-N2773-006 NOTE 2 NOTE 2 NOTE 2 NOTE 2 (NOTE 2): For ALI k eyboard T762 R1251 - N.I., R1252 - R1254 - 0 ohm (NOTE 2): For ATM EL k eyboard models, R1251 - 0 ohm, R1252 - R1254 - N.I. 1 V D 1 2D GND 1 3 XM T9 58 4EM WR 5EM OE 6SCD IN 7SCCLK 8EM AD 7 9EM AD 6 10EM AD 5 11EM AD 4 12 V D 2 13D

16、GND 2 14EM AD 3 15EM AD 2 16EM AD 1 17EM AD 0 18CS 19SCD OU T 20INTREQ 21EXTM EM22 SD ATAN1 23 V D 3 24D GND 3 25 SCLKN1 26 LRCLKN1 27 SD ATAN2 28 SCLKN2 29 LRCLKN2 30 CLKIN 31 CLKSEL 32 FILT2 33 FILT1 34 V A 35AGND 36RESET 37D D 38D C 39 AU D ATA2 40 AU D ATA1 41 AU D ATA0 42 LRCLK 43 SCLK 44 M CLK

17、 U 1001 CS49 326-CL C1061 0.1u C1062 1u50V C1003 0.1u C1004 1u50V R1001 4.7k R1002 4.7k R1003 3.3k R1004 3.3k R1005 3.3k R1006 3.3k 1D IR 2A0 3A1 4A2 5A3 6A4 7A5 8A6 9A7 10 GND 11 B7 12 B6 13 B5 14 B4 15 B3 16 B2 17 B1 18 B0 19OE 20 V CC U 1002 74LV C245A 1D IR 2A0 3A1 4A2 5A3 6A4 7A5 8A6 9A7 10 GND

18、 11 B7 12 B6 13 B5 14 B4 15 B3 16 B2 17 B1 18 B0 19OE 20 V CC U 1003 74LV C245A 1SELECT 2A0 3B0 4 Y 0 5A1 6B1 7 Y 1 8 GND 9 Y 2 10B2 11A2 12 Y 3 13B3 14A3 15O/ P_ENABLE 16 V CC U 1004 74HC157 1 CD OU T 2 CS 3 EM PH 4RXP0 5RXNO 6 V A 7AGND 8FILT 9RST 10 RM CK 11 RERR 12RXP1 13RXP2 14RXP3 15RXP4 16 OS

19、CLK 17 OLRCK 18 SD OU T 19 INT 20 U 21OM CK 22D GND23 V D 24H/ S 25RXP5 26RXP6 27 CD IN 28 CCLK U 1005 CS8415A R100733 R100810k C1006 220p C1007 0.01u R1009 200k C1010 0.01u R1013 1.2k C1012 10u 16V 1 V PP 2 A16 3 A15 4 A12 5A7 6A6 7A5 8A4 9A3 10A2 11A1 12A0 13Q 0 14Q 1 15Q 2 16V SS 17Q 3 18Q 4 19Q

20、5 20Q 6 21 Q 7 22 E 23 A10 24 G 25 A11 26 A9 27 A8 28 A13 29 A14 30 A17 31 P 32 V CC U 1007 SST27SF020 (256K x 8) 1OE 2D 0 3D 1 4D 2 5D 3 6D 4 7D 5 8D 6 9D 7 10GND11 CLK 12 Q 7 13 Q 6 14 Q 5 15 Q 4 16 Q 3 17 Q 2 18 Q 1 19 Q 0 20 V CC U 1008 74LV Q 574 1OE 2D 0 3D 1 4D 2 5D 3 6D 4 7D 5 8D 6 9D 7 10GN

21、D11 CLK 12 Q 7 13 Q 6 14 Q 5 15 Q 4 16 Q 3 17 Q 2 18 Q 1 19 Q 0 20 V CC U 1009 74LV Q 574 C1017 0.1u R1020 10k C1018 0.1u C1019 0.1u C1020 3.3u 50V C1021 3.3u 50V R1022 10k R1023 2.2k C1022 3300p 3 + 2 - 1 U 1010-A NJM 5532M R1024 620 R1026 10k R1027 2.2k R1028 2.2k C1024 1000p C1025 1500p R1030 2.2

22、k C1026 3300p 5 + 6 - 7 U 1010-B NJM 5532M R1031 620 R1033 2.2k C1028 1000p C1029 1500p R1035 2.2k C1030 3.3u 50V C1031 3.3u 50V R1036 10k R1037 2.2k C1032 3300p 3 + 2 - 1 U 1011-A NJM 5532M R1038 620 R1040 10k R1041 2.2k R1042 2.2k C1034 1000p C1035 1500p R1044 2.2k C1036 3300p 5 + 6 - 7 U 1011-B N

23、JM 5532M R1045 620 R1047 2.2k C1038 1000p C1039 1500p R1049 2.2k C1040 3.3u 50V C1041 3.3u 50V R1050 10k R1051 2.2k C1042 3300p 3 + 2 - 1 U 1012-A NJM 5532M R1052 620 R1054 10k R1055 2.2k R1056 2.2kC1044 1000p C1045 1500p R1058 2.2k C1046 3300p 5 + 6 - 7 U 1012-B NJM 5532M R1059 620 R1061 2.2k C1048

24、 1000p C1049 1500p R1063 2.2k C1050 3.3u 50V C1051 3.3u 50V R1064 10k R1065 2.2k C1052 3300p 3 + 2 - 1 U 1013-A NJM 5532M R1066 620 R1068 10k R1069 2.2k R1070 2.2k C1054 1000p C1055 1500p R1072 2.2k C1056 3300p 5 + 6 - 7 U 1013-B NJM 5532M R1073 620 R1075 2.2k C1058 1000p C1059 1500p R1077 2.2k 1D I

25、R 2A0 3A1 4A2 5A3 6A4 7A5 8A6 9A7 10GND11 B7 12 B6 13 B5 14 B4 15 B3 16 B2 17 B1 18 B0 19 OE 20 V CC U 1014 74LV C245A E C B Q 1001 2SC1815Y E C B Q 1002 2SC1815Y R1078 2.2k R1079 4.7k R1080 2.2k R1081 3.3k R1082 1.8k AD J OU T IN U 1015 LM 317 C1060 470u 16V R1083 4.7k E C B Q 1003 2SC1815YR1084 2.

26、2k C1072 10u 16V R109 0 2.7k R109 1 2.7k AD J OU T IN U 1020 LM 317 C1073 470u 16V C1074 0.1uC1075 0.1u C1076 0.1u C1078 0.1u C1079 10u 16V C1082 0.1u C1081 0.1u C1083 1u 50V R1182 100 R1183 100 R1184 100 C109 0 0.1u C109 1 3.3u 50V C109 3 0.1u C109 4 3.3u 50V C109 5 0.1u C109 6 1u 50V L1002 10uH L1

27、003 10uH L1005 10uH C109 9 0.1u C1100 1u 50V C1101 100p C1102 100p C1103 100p C1104 100p C1105 100p C1106 100p C1107 100p C1108 100p 8 4U 1010-C NJM 5532M 8 4U 1011-C NJM 5532M 8 4 U 1012-C NJM 5532M 8 4 U 1013-C NJM 5532M 8 4U 1023-C NJM 5532M C1109 47u 16V C1110 47u 16V C1111 47u 16V C1112 47u 16V

28、 C1114 4700p R1021 10k 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 J604B To M ulti-Ch J604A C1117 100u 16V R1114 10k C1118 N.I. 16V C1119 N.I. 16V R1115 100 C1121 220p C1124 0.1u C1125 0.1u C1126 0.1u C1127 0.1u C1128 0.1u C1129 N.I. C1130 4700p C1131 4700p V + NC OU T GND X1001 12.288M Hz Cr

29、ystal Oscillator L1007 10uH C1132 1000p C1133 N.I. 16V 1RST 2V L 3SD ATA 4SCLK 5LRCK 6M CLK 7M 3 8M 2 9M 1 10M 011 FILT+ 12 CM OU NT 13 BM U TEC 14 AOU TB- 15 AOU TB+ 16 AGND 17 V A 18 AOU TA+ 19 AOU TA- 20 AM U TEC U 1025 CS439 2 C1137 10u 16V C1138 10u 16V R1116 5.62k R1117 5.62k R1118 1.18k R1119

30、 1.18k C1139 2700p R1120 1.5k 3 + 2 - 1 U 1028-A NJM 5532M C1142560p R11211.5k C1141 560p C1140 2700p C1143 10u 16V C1144 10u 16V R1122 5.62k R1123 5.62k R1124 1.18k R1125 1.18k C1145 2700p R1126 1.5k 5 + 6 - 7 U 1028-B NJM 5532M C1148560p R1127 1.5k C1147 560p C1146 2700p C1155 1u 50V 1V LS 2SD IN1

31、 3SD IN2 4SD IN3 5SCLK 6LRCK 7M CLK 8V D 9GND 1 10RST 11D IF1/ SCL/ CCLK 12D IF0/ SD A/ CD IN 13M 1/ AD 0/ CS 14V LC15 M 2 16 FILT+ 17 V Q 18 M U TEC3 19 AOU TB3 20 AOU TA3 21 GND 2 22 V A 23 AOU TB2 24 AOU TA2 25 M U TEC2 26 AOU TB1 27 AOU TA1 28 M U TEC1 U 1026 CS4360 C1134 2200p C1135 2200p C1136

32、 2200p 8 4U 1028-C NJM 5532M C1013 0.1u C1014 1u 50V C1015 0.1u C1016 1u50V R113110k R113210k R113310k R113410k R113510k R113610k R113710k R113810k R1010 0 C1008 0.1u C1009 0.1u R1113 100 R1112 100 C1166 N.I. R1166 1k 1 2 3 4 J1010B to D igital C1005 2.2u 16V R1181 100 R109 2 100 R109 3 100 R109 4 1

33、00 D 1001 N.I. R119 133 R119 233 R119 333 R119 433 1 2 J1009 B To D IGITAL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 J203B to Keyboard R119 52k R119 7 2k R119 6 2k R119 8 2k C1011 0.1u_(M ) 63V R109 9 0 L1009 0 C1181 N.I. J1001 0 R1221 2.7k R1222 4.7k C1160 0.01u 50V

34、 R1231 4.7k C1201 330p R1232 4.7k R1234 4.7k C1202 330p R1233 4.7k R12394.7k C1205 330p R1240 4.7k R1242 4.7k C1206 330p R1241 4.7k R1243 4.7k C1207 330p R1244 4.7k R1246 4.7k C1208 330p R1245 4.7k R1236 4.7k C1203 330p R1235 4.7k R1237 4.7k C1204 330p R1238 4.7k L1001 10uH L1004 10uH L1010 10uH C11

35、52 1u_(M ) 63V C1151 0.1u C1157 0.1u C1156 1u_(M ) 63V R1130 10k C109 2 1u_(M ) 63V C1150 0.1u C1178 0.1u C1154 1u_(M ) 63V C1177 0.1u C1153 1u_(M ) 63V C1186 N.I. C1185 N.I. C1184 N.I. C1183 100p R1216 75 R1215 0 R1214 75 R1213 75 1M 0 2M CLK 3V L 4SD OU T 5GND 6V D 7SCLK 8LRCK9 RST 10 AINL 11 V Q

36、12 AINR 13 V A 14 REF_GND 15 FILT+ 16 M 1 U 1027 CS5341 R1224 100k R1223 100k R1218 634 C1188470p C0G R1220 N.I. R1219 N.I. C1187470p C0G R1217634 R1176 100k R1175 100k R1172 47k R1171 47k C1176 0.01u C0G R1174 47k C1172 4.7u16V R1178 9 1 5 + 6 - 7 U 1023-B NJM 5532M C1175 0.01u C0G 1 2 3 J715B To M

37、 ainboard R1173 47k C1171 4.7u16V R1177 9 1 3 + 2 - 1 U 1023-A NJM 5532M L1011 5.6uH C1209 68p C1210 0.1u_(M ) 63V L1012 10uH L1015 10uH L1014 10uH R1248 N.I. R1247 0 R1249 0 R1250 N.I. L1013 10uH R1251 0 R1254 N.I. R1252N.I. R1253N.I. AGND +2.5V D D GND AGND +2.5V D D GND D GND +3.5V D D GND D GND

38、AGND D GND AGNDAGND D GND +8V D GND D GND D GND D GND +5V D +5V D +3.5V D D GND D GND D GND +3.5V D D GND D GND D GND +8V D GND +2.5V D D GND +2.5V D +5V D AGNDAGND AGND +5V D AGND +3.5V D D GND AGND AGND AGND +12V +12V-12V -12V D GND AGND +3.5V D +5V D D GND +5V D +12V -12V +3.5V D +2.5V D AGND D G

39、ND +5V D D GND D GND CEN AGND AGND AGND AGND AGND AGND AGND AGND +12V -12V SU B SL SR BSL BSR FL FR +12V -12V D GND D GND D GND D GND D GND D GND D GNDD GND D GND D GND D GND +3.5V D D GND +8V D GND +3.5V D +3.5V D AGND AGND D GND D GND D GND D GND D GND D GNDD GNDD GNDD GND +2.5V D D GND D GND D GN

40、D AGND D GND +5V D +5V D 251_C 251_B 251_A D GND D GND D GND D GND CD IN CLK 8415_CD OU T 8415_CS 49 326_CS 49 326_RESET INTREQ ABOOT D / A 49 326_CD OU T 251_A 251_B 251_C A17 A16 A15 D GND 4360/ 439 2/ 5333/ 8415_RST +8V +8V +5V D +5V D D GND +5V D D GND +2.5V A AGND AGND AGND AGND +5V D +3.5V D +

41、3.5V D D GND D GND AGND AGND +3.5V D D GND AGND AGND AGNDAGND AGNDAGND AGND D GND +3.5V D+5V D +5V D+3.5V D 16 SCHEMATIC DIAGRAM DSP 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%. ?

42、 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

43、 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 solde

44、r 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 17 ? Cut out the following parts: 1. Diodes D709 and D710 2. Q701 (cut out or pull out) 3. Cut out R702 18 Anot 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