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1、NAD C 546BEE COMPACT DISC PLAYER C 546BEE COMPACT DISC PLAYER SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 - 2 - SAFETY INFORMATION CAUTION THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:- (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2)
2、 THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION. The lightning flash with arrowhead, within an equilateral tri- angle is intended to alert the user of the presence of uninsulated dangerous voltage within the products enclosure; that may b
3、e of sufficient magnitude to consti- tute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intend- ed to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. CLASS 1 LA
4、SER PRODUCT RadioFans.CN 收音机爱 好者资料库 - 3 - SERVICE SAFETY PRECAUTIONS 1. Replacing the fuses CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. Reference NoPart NumberDescription FC201 5120-0050+0FUSE T1.6A/250V 5X20 FC202, FC204, FC205 5120-0018+0FUSE T1A
5、 250V 5X20 FC203 5120-0035+0FU T100MA 250V F101 5120-1169+0-CFUSE 0.8A 250V 8.35X4.3 2. Safety check out (Only U.S.A. model) Before returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit.
6、 Parts marked with the symbol are critical with regard to the risk of fire and electric shock. Replace only with parts recommended by the manufacturer. CONTENTS DESCRIPTION PAGE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7、 . . . . . . . 4 REAR PANEL / FRONT PANEL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 BLOCK DIAGRAM . . . . . . . .
8、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 RF PATTERN TESTING. . . . . . . . . . . . . . . . . . .
9、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 IMPORTANT NOTES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12 MCU UPGRADE PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10、 . . . . . . . . . . . . .13-19 SERVO UPGRADE PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 PCB LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-24 SCHEMATI
11、C DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25-30 IC BLOCK DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31-37 TROUBLESHOOTING GUIDE. . . . . . . . . . . .
12、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39-53 TRAVERSE EXPLODED VIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、. . . . . . . . . . . . . . . . 54 TRAVERSE EXPLODED VIEW PARTS LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 EXPLODED VIEW
14、PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57-58 PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 HISTORY CHANGE. . . . . . . . . . . . . . . . . . . . .
15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 RadioFans.CN 收音机爱 好者资料库 - 4 - SPECIFICATIONS GENERAL PARAMETERS Output levelAnalog: 2.2 0.1 V Optical: -22.5 3.5 dBm Coaxial: 950 100 mV Frequency response0.3 dB (ref. 0 dB 20 Hz-1 kHz) 0.5 dB (ref. 0 dB 5 kHz-20 kHz) To
16、tal harmonic distortion90 dB De-emphasis-3.73 to -5.33 dB (ref. 0dB 1 kHz, 5 kHz) -8.04 to -10.04 dB (ref. 0dB 1 kHz, 16 kHz) Linearity0.01 dB (ref. 0dB 1 kHz at -3 dB) 0.02 dB (ref. 0dB 1 kHz at -6 dB) 0.02 dB (ref. 0dB 1 kHz at -10 dB) 0.05 dB (ref. 0dB 1 kHz at -20 dB) 0.15 dB (ref. 0dB 1 kHz at
17、-60 dB) Standby power0.5W USB Output level2.2 0.2 V Frequency response1 dB (ref. 0 dB 20 Hz - 16 kHz) Total harmonic distortion0.03% (ref. 0 dB 1 kHz, Audio LPF) Signal/Noise ratio118 dB (ref. 0 dB 1 kHz, A-weighted Pause) DIMENSION AND WEIGHT Unit Dimensions (W x H x D)435 x 306 x 89 mm (Gross)* 17
18、 1/8 x 12 /16 x 3 9/16 inches Net weight4.9 kg 10.8 lbs Shipping weight6.3 kg 13.9 lbs * - Gross dimensions include feet, extended buttons and rear panel terminals. Specifications are subject to change without notice. For updated documentation and features, please log onto www. NAD for the latest in
19、formation about C 546BEE. - 5 - 1. LINE OUT 2. DIGITAL OUT (COAXIAL, OPTICAL) 3. +12V TRIGGER IN 4. IR IN 5. AC MAINS INPUT 1. STANDBY BUTTON 2. STANDBY LED 3. DISC TRAY 4. STOP/OPEN 5. SOURCE 6. RANDOM 7. DISPLAY 8. SCAN 9. USB INPUT 10. PLAY/PAUSE/SKIP 11. VFD 12. REMOTE SENSOR REAR PANEL / FRONT
20、PANEL REAR PANEL FRONT PANEL 12345 12345678910 1112 - 6 - 7 6 6 5 4 3 1 2 DISASSEMBLY INSTRUCTIONS 1. Remove machine screws M 4.0 x 6.0 ( 1 to 4 ) from the side panels. Remove tapping screw 3.0 x 8.5 ( 5 )from the back panel. Refer to Figure No.1. Figure No.1 2. Pull both sides of the TOP COVER slig
21、htly outwards 6 and tilt approx. 35 and then remove in the direction as indicated by the arrow 7 . Refer to Figure No.2. Figure No.2. - 7 - BLOCK DIAGRAM VFDKey Keyboard MCU IC206 TMP86FS49 VFD, Key, DAC U202 Electromotor drive And loader control U209 DAC WM8740 TA7291 IR in Trigger in Coaxial out O
22、ptical out RCA R/L out U201 74HCU04 SPDIF IR U3 74HC86 Transformer AC in EMI inductor +12V -12V-28VD+5V +5V+8V 7805/7809/7812/7912 Loader MM1669 Motor drive IC3 IC703 T5CJ3-7D13 IC701 TC94A93 SERVO Mainboard Servoboard - 8 - WIRING DIAGRAM 123 Reset RXD TXD GND CPU_5V L R 120V 230V CD8V GND 1.5V CL_
23、SW JGND OP_SW LM_CL LM_OP SPDIF DATA BCLK LRCLK MCLK GND USB_DET USB_UPDATE ACK AM1 DETECT USB_RST MCU_RST AC1 AC2 -28V D+5V KGND KEY1 KEY0 V_R2 V_R1 VFD_CLK VFD_DATA VFD_CE VFD_INH CPU_5V DGND LED REMOTE 2 17 18 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.12. 13. 14. 15. 16. 17. 18.DGND 1 PCB-C54626+MAIN 172
24、6-072A+000B Issue B RESET DET T1.6AL250V T1AL250V T1AL250V 100mAL250V T1AL250V P217 P218 P219 JGND JGND JGND JGND JGND J222 Remote to MCU Remote from Keyboard DGND DETECT CPU_5V TXD RXD DGND CPU_5V USB_TX USB_RX T800mAL 250V RCA_CH X201 C216 C219 Q216 C220 C223 C203 C312 C314 C316 C310 C264 C265 C26
25、6 C267 C268 Q205 Q202 C269 C270 C271 Q203 C273 L201 Q204 C226 C230 C233 C237 C238 C240 Q210 Q211 Q212 Q213 C245 C247 C249 C251 C253 D210 C254 Q206C255 Q207 C257 D213 D214 C258 C259 C208 C214 Q201 D202 L202 D204 D205 D208 C235 C272 H207 H202 H203 H204 H206 H201 C277 C285 D218 C323 C324 P202 P203 R289
26、 R241 R335 R334 R243 R302 R306 Q208 Q209 J219 P204 P205 L2 C15 R290 D209 CN103 R24 C115 D6 C113 D7 D11 Q10 D8 D13 D14 D15 R264 Q9 C16 D12 X202 L203 J220 D203 U203 D206 J217 J218 D211R262 RL202 RL201 J209 J210 FC201 FC202 FC203 FC204 FC205 U210 U211 AC201 U202 IC202 IC203 U205 U206 U207 J214 C210 C21
27、1 CON201 J201 J202 J203 J204 J207 RCA201 U204 R243 D201 D1 C243 RCA202 J215 C201 C10 L1 C11 U2 C12 C13 C14 J205 JMP120 JMP46 JMP121 JMP83 JMP88 JMP92 JMP82 JMP47 JMP84 JMP90 JMP40 JMP22 JMP24 JMP43 JMP76 JMP72 JMP51 JMP2 JMP13 JMP26 JMP27 JMP30 JMP25 JMP28 JMP32 D239 R140 JMP38 JMP33 JMP48 JMP49 JMP
28、54 JMP52 JMP50 JMP57 JMP59 JMP56JMP55 JMP62 JMP99 JMP78 JMP29 JMP60 JMP71 JMP100 JMP73 D238 JMP18 JMP94 JMP63 JMP61 JMP19 JMP91 JMP53 JMP58 JMP69 JMP77 J216 JMP11 JMP10 JMP131 JMP133 JMP139 JMP75 JMP132 JMP21 JMP45 JMP124 JMP115 JMP86 JMP80 JMP6 JMP14 JMP15 JMP16 JMP17 JMP7 JMP68 JMP67 JMP119 JMP41
29、JMP42 JMP1 JMP5 JMP3 JMP128 JMP122 JMP98JMP125 JMP102 JMP126 JMP113 JMP36 JMP34 JMP31 JMP123 JMP127 JMP135 JMP136 JMP85 JMP81 JMP70 JMP37 JMP66 JMP74 JMP12 JMP137 JMP138 JMP35 SW201 D21 D23 D22 D24 L102 C114 D107 R21 D105 R22 C17 U116 R23 D108 C18 C110 C109 R117 R27 L103 C116 C112 C111 U101 JMP64 JM
30、P20 CN1A JMP9 JMP4 JMP93 JMP8 JMP106 JMP129 JMP130 JMP141 JMP142 JMP143 JMP114 JMP87 JMP144 JMP145 JMP146 JMP147 JMP148 JMP151 JMP152 JMP140 JMP79 JMP153 JMP44 JMP134 JMP158 D16 JMP155 D17 R33 D2 JMP150 F101 JMP156 JMP157 JMP159 JMP163 JMP164 D5 T100 AC1 AC2 -28V +5V GND KEY1 KEY0 V_R2 VR_1 VFE_CLK
31、VFD_DATA VFD_CE VFD_INH VFD_5V GND LED REMOTE GND STOP/OPEN SOURCE RANDOM DISPLAY SCAN LEFT SCAN RIGHT GND 1726-072A+000B PCB-C54626+KEY Issue B CN102B R105 R104 R115 C104 REMO101 C102 Z101 JMP39 JMP117 JMP105 JMP108 JMP111 JMP110 JMP109 JMP97 JMP107 JMP112 JMP104 JMP95 JMP101 JMP89 JMP23 S105S103 S
32、104 S107 S108 S109 S1S2 JP110 CON101 JMP154 JMP65 JMP160 JMP116 JMP96 JMP161 JMP162 JMP118 JMP103 JMP149 GND POWER 1726-072A+000B PCB-C54626+SKIP Issue B JP109 T1 PCB-C54626+SW1 1726-072A+000B Issue B 3-BLUE 1-AMBER CN102A D4 S3 1726-072A+000B PCB-C54626+USB Issue B CN2JP108 GN_CH 13 46 SLT- SLT+ FM
33、- FM+ DM- DM+ FE- TE- TE+ FE+ PD VR LD GND F C B A D E SVCC VREF T5CJ3-7D13 TC94A93FG CL-SW OP/CL-COM OP-SW LM-CL LLM-OP GND USB- USB- USB- DET UPDATE POWER AM1 MCU- TEST USB- RST MCU- RST USB- RX USB- TX VCC D- D+ DGND PCB-C54626+SERVO 1725-970B+000B Q701 Q71 Q2 C707 C708 C712 C715 C717 C734 C735 C
34、743 C744 C745 C746 C27 C28 C29C52 C56 C6 C7 C701 C702 C705 C706 C710 C713 C714 C716 C719 C721 C723 C724 C728 C731 C733 C737 C738 C740C742 C756 C760 C761 C765 C768 C770 C771 C772 C774 C775 C777 C781 C783 C757 C791 C711 C718 C726C727 C763C764 C703 C704 C720 C722 C725 C730 C732 C741 C766 C767 C769 C773
35、 C776 C778 C779 C780 C782 C25 C51 C76 C60 C75 C739 C785 C26 C8 C758 C759 C762 C53 C54 C59 C74 C77 C78 D5 D6 L703 L705 L706 L707 L708 L709 CN701 L10 L11 U11 IC3 CN08 JR0 JR701 R1 R10 R11 R16 R19 R2 R23 R3 R4 R46 R50 R52 R53 R55 R56 R57 R63 R64 R65 R66 R67 R7 R701 R702 R703 R704 R705 R706 R707 R708 R7
36、09 R710 R711 R712 R713 R714 R715 R716 R717 R718 R719 R720 R721 R722 R723 R724 R725 R727 R728 R729 R730 R731 R732 R733 R734 R735 R736 R737 R738 R739 R740 R741 R742 R743 R744 R745 R746 R747 R748 R749 R750 R751R752R753 R756 R757 R758 R759 R760 R761 R762 R763 R764 R765 R766 R767 R768 R769 R770 R771 R772
37、 R773 R774 R775 R776 R777 R778 R779 R780 R781 R782 R783 R8 R823 R824 R825 R826 R827 R828 R829 R51 R54 R20 R21 R22R48 R49 R13 R14 CN4 IC707 IC4 IC6 IC701 IC703 X702 R15 R30 C729 C736 X701 R31 R32 R33 R34 R35 R36 C784 C2 C5 C1 J215 IC1 Q220 C3 C4 R17 R18R25 R27 R5 R6 R9 CN1B Q1 R12 R24 R26 R830 R28 R2
38、9 R37 JP108 1V5 8V BCLK DATA GND LRCLK MCLK SPDIF J220 J1 CD MECHANISM SWITCH Board KEY Board SERVO Board SKIP Board USB Board MAIN Board TRANSFORMER AC IN - 9 - RF PATTERN TESTING NAD - C 546BEE PCB TESTING POINTS DIAGRAM TESTING PROCEDURE (1) Load the test disc (Sony Test CD YEDS-7) and set the un
39、it into PLAY mode. (2) Connect the scope to C3 (Pin 4 of IC701) and DGND (J215). Scope setting: Coupling : AC. Vertical sensitivity : 0.2 V/ div. Horizontal time base : 0.5 S/div. (3) Observe the waveform is 1.5V p-p +/-5% and the eye pattern is at its best shape (see FIG. 1). FIG. 1 (a) FIG. 1 (b)
40、Poor eye pattern FIG. 1 (C) Good eye pattern 3T 4T5T 11T 13 46 SLT- SLT+ FM- FM+ DM- DM+ FE- TE- TE+ FE+ PD VR LD GND F C B A D E SVCC VREF T5CJ3-7D13 TC94A93FG CL-SW OP/CL-COM OP-SW LM-CL LLM-OP GND USB- USB- USB- DET UPDATE POWER AM1 MCU- TEST USB- RST MCU- RST USB- RX USB- TX VCC D- D+ DGND PCB-C
41、54626+SERVO 1725-970B+000B Q701 Q71 Q2 C707 C708 C712 C715 C717 C734 C735 C743 C744 C745 C746 C27 C28 C29C52 C56 C6 C7 C701 C702 C705 C706 C710 C713 C714 C716 C719 C721 C723 C724 C728 C731 C733 C737 C738 C740C742 C756 C760 C761 C765 C768 C770 C771 C772 C774 C775 C777 C781 C783 C757 C791 C711 C718 C7
42、26C727 C763C764 C703 C704 C720 C722 C725 C730 C732 C741 C766 C767 C769 C773 C776 C778 C779 C780 C782 C25 C51 C76 C60 C75 C739 C785 C26 C8 C758 C759 C762 C53 C54 C59 C74 C77 C78 D5 D6 L703 L705 L706 L707 L708 L709 CN701 L10 L11 U11 IC3 CN08 JR0 JR701 R1 R10 R11 R16 R19 R2 R23 R3 R4 R46 R50 R52 R53 R5
43、5 R56 R57 R63 R64 R65 R66 R67 R7 R701 R702 R703 R704 R705 R706 R707 R708 R709 R710 R711 R712 R713 R714 R715 R716 R717 R718 R719 R720 R721 R722 R723 R724 R725 R727 R728 R729 R730 R731 R732 R733 R734 R735 R736 R737 R738 R739 R740 R741 R742 R743 R744 R745 R746 R747 R748 R749 R750 R751R752R753 R756 R757
44、 R758 R759 R760 R761 R762 R763 R764 R765 R766 R767 R768 R769 R770 R771 R772 R773 R774 R775 R776 R777 R778 R779 R780 R781 R782 R783 R8 R823 R824 R825 R826 R827 R828 R829 R51 R54 R20 R21 R22R48 R49 R13 R14 CN4 IC707 IC4 IC6 IC701 IC703 X702 R15 R30 C729 C736 X701 R31 R32 R33 R34 R35 R36 C784 C2 C5 C1
45、J215 IC1 Q220 C3 C4 R17 R18R25 R27 R5 R6 R9 CN1B Q1 R12 R24 R26 R830 R28 R29 R37 JP108 1V5 8V BCLK DATA GND LRCLK MCLK SPDIF J220 J1 Test Point - 10 - IMPORTANT NOTES INSTRUCTION FOR HANDLING OPTICAL SYSTEM BLOCK PICK-UP Electrostatic breakdown of the laser diode in the optical system block may occu
46、r due to a potential difference caused by electrostatic charge accumulated on clothing, human body, etc. A ground must be provided as follows to prevent any electrostatic charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a ground band (1M ohm) that is properly to remov
47、e any static electricity that may be charged on the body. 2. Ground for Work Bench Be sure to place a conductive sheet (1M ohm) or copper plate with proper grounding on the work bench or other sur- face on which the pick-up is to be placed. 3. Because the static electricity charge on the clothing do
48、es not discharge through the body grounding band, do not let clothing to get in contact with the pick-up unit. PRECAUTIONS FOR CHECKING BEAM EMISSION The laser beam of this unit is focused on the reflecting surface of the objective lens in the optical system block. Therefore, keep your eyes at least
49、 12 inches (30 cm) away from the objective lens when the laser diode is ON. (Operation Check Method for Laser Diode and Focus Search Function.) When the POWER switch is turned ON after the chucking plate is removed, observe the objective lens and confirm that the following operations are performed properly. (The optical system should be at the lead-in area position when it is checked at this time.) (1) The laser should be at the innermost position after the chucking plate is removed. (2) The diffused light of the laser beam can be seen when the POWER
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