NAD-C545BEE-cd-sm 电路图维修手册.pdf

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1、NAD C 545BEE COMPACT DISC PLAYER C 545BEE 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 *C 5120-0050+0FUSE T1.6A/250V 5X20 FC201 *AH 5120-0052+0FUSE T1.6A 250V

5、 5X20 FC202, FC204, FC205 *C 5120-0018+0FUSE T1A 250V 5X20 FC202, FC204, FC205 *AH 5120-0020+0FU T1A 250V UL/CSA 5X20 FC203 *C 5120-0035+0FU T100MA 250V FC203 *AH 5120-0036+0FUSE 250V 100MA T 5X20 NOTE: : USA, CANADIAN MODEL ONLY. : EUROPEAN MODEL ONLY. 2. Safety check out (Only U.S.A. model) Before

6、 returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit. Parts marked with the symbol are critical with regard to the risk of fire and electric shock. Replace only with parts recommended

7、by the manufacturer. CONTENTS DESCRIPTION PAGE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 REAR PANEL / FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8、 . . . . . 5 DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 WIRING DIAGRAM . . . . . .

9、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 RF PATTERN TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . .

10、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12 PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-16 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11、 . . . . . . . . . . . . . . . . . .17-23 IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-31 TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 E

12、LECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33-44 MECHANISM EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 MECHANISM EXPLODED VIEW PARTS LIST . . . . . . .

13、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14、 . . . . . . . . . . . 48 PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 RadioFans.CN 收音机爱好者资料库 - 4 - SPECIFICATIONS GENERAL PARAMETERS Output level - Analog 2.2 0.1 V Optical -22.5 3.5 dBm Coaxial 650 150 mV Fr

15、equency response 0.3 dB (ref. 0 dB 20 Hz-1 kHz) 0.5 dB (ref. 0 dB 5 kHz-20 kHz) Total harmonic distortion 90 dB De-emphasis -3.73 to -5.33 dB (ref. 0dB 5 kHz) -8.04 to -10.04 dB (ref. 0 dB 16 kHz) Linearity 0.01 dB (ref. 1 kHz at -3 dB) 0.02 dB (ref. 1 kHz at -6 dB) 0.02 dB (ref. 1 kHz at -10 dB) 0.

16、05 dB (ref. 1 kHz at -20 dB) 0.15 dB (ref. 1 kHz at -60 dB) DIMENSION AND WEIGHT Unit Dimensions (W x H x D) 435 x 285 x 70 mm (Net) 435 x 293 x 86 mm (Gross)* Net weight 4.9 kg Shipping weight 6.3 kg * - Gross dimensions include feet, extended buttons and rear panel terminals. - 5 - 1. UPGRADE PORT

17、 2. LINE OUT 3. DIGITAL OUT (COAXIAL, OPTICAL) 4. +12V TRIGGER INPUT 5. IR INPUT 6. AC MAINS INPUT 1. STANDBY 2. STANDBY LED 3. DISC TRAY 4. OPEN/CLOSE 5. PLAY/PAUSE 6. STOP 7. RANDOM 8. REPEAT 9. DISPLAY 10. SKIP/SCAN 11. VFD 12. REMOTE SENSOR REAR PANEL / FRONT PANEL REAR PANEL FRONT PANEL 12345 6

18、 12345678910 1211 - 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 slightly outwards 6 and tilt approx. 3

19、5 and then remove in the direction as indicated by the arrow 7 . Refer to Figure No.2. Figure No.2. - 7 - BLOCK DIAGRAM ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? - 8 - WIRING DIAGRAM CD MECHANISM SWITCH Board KEY Board SERVO Board MAIN Board TRANSFORMER AC I

20、N 7013-0550+0 part of the fascia assembly 7013-0510+0 7013-0530+0 part of the fascia assembly NSP NSP 7013-0540+0 7012-9020+0 7013-0520+0 7013-0570+0 7013-0560+0 7013-1280+0 7012-9301+0 CORD-AC GS 250V 2.5A - C VERSION 7012-9331+0 CORD-AC UL 125V 7A - AH VERSION - 9 - RF PATTERN TESTING NAD - C 545B

21、EE PCB TESTING POINTS DIAGRAM TESTING PROCEDURE (1) Load the test disc (Sony Test CD YEDS-7) and set the unit into PLAY mode. (2) Connect the scope to C7 (Pin 81 of IC1) and DGND (C32). Scope setting: Coupling : AC. Vertical sensitivity : 0.2 V/ div. Horizontal time base : 0.5 S/div. (3) Observe the

22、 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) Poor eye pattern FIG. 1 (C) Good eye pattern 3T4T5T 11T Test Point - 10 - IMPORTANT NOTES INSTRUCTION FOR HANDLING OPTICAL SYSTEM BLOCK PICK-UP Electrostatic breakdown of the laser diode in the o

23、ptical system block may occur 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 oh

24、m) that is properly to remove 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 electrici

25、ty charge on the clothing does 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. Theref

26、ore, keep your eyes at least 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 followin

27、g 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 switch is turne

28、d ON. (3) Vertical (up and down) movement of the objective lens (2 or 3 times) will take place. INCORRECT CORRECT NOTE: Laser diodes are so susceptible to damage from static electricity that even if a static discharge does not ruin the diode, it can shorten its life or cause it to work improperly. 1

29、.Grounding band 1M ohm 1M ohm 2.Conductive Sheet or Copper Plate - 11 - PRECAUTIONS WHEN CHANGING LASER PICK-UP When removing the pick-up assembly, short circuit the PCB tracks on the optical block as show in the drawing in order to protect the pick-up before removal. NOTE: Replacement pick-up assem

30、blies are supplied with the PCB pattern already protected. DO NOT REMOVE THE SHORT CIRCUITS UNTIL YOU HAVE FINISHED FITTING THE PICK-UP. Caution: Laser diodes are extremely susceptible to damage from static electricity. Even if a static discharge does not ruin the diode, it can shorten its life or c

31、ause it to work improperly. When replacing the pick-up, use a conductive mat, a grounded soldering iron, and so on, to protect the laser diode from static damage. Ground Conductive Wrist Band for Body Ground Line Less than 10 ohm Conductive Gum Mat Soldering Iron with Ground wire Protective solderin

32、g place for laser diode - 12 - MULTI-KEY TABLE FOR C545BEE (orignal production) ItemContentMulti-key 1 2 3 VFD full segment displaySTOP + SCAN BACK Playtime totalRANDOM + SCAN FORWARD Eject times countRANDOM + SCAN BACK NOTES New special key functions (MCU v0.4.0. (? 5? +? (? ? ?% +51?+ ? ? 0)? ? 0?

33、2 ? +51?+ ? ? 0?-?) ? 0?-?1? ?( 0?-?0? ?8 3?)0-? ? ?*? ?% ?-?) % ? ?-?) ? ? ,?)1)+ ? ?1)+ ? 4?1 ? 4?+ ?( 3( ?8 3(8 ? 1)0-?41) ?% ?-3+ ? 355? ? 14?)+-3 ? 38? ? ? ? (% 05? (? 05?C (?1? (? ?1? (? ? ?%( 1?34 ?8 ? ?% ? +?% ?%? ?%? ?8( ?% +? ?8? ? ?%? ?( ?%?7?(. ?8? ?%? ? ? ? 9?% ?%;?%? ?% ?%?,7?%* ? ? ?

34、5 ? / ?%; 1? ? 4?%? 1?8?;? ?( ?%?7?(. ?8?%? ? ?8%?,7?(. +?(? ?:8 +?( ?8 +?(8 ?8? +?8? ?8 +?%? ?+ +?%? ?+ +?%? ?+ +?%? ?8? ?%? ?%?,7?* ?%? ?%? +?%?+ +?%(?+ +?%8?+ +?% ?8? +?% ?8? ?% ?%? ? ? ? ? ? ( 8 ?% ? ? ? ? ? ?( ?8 ?%? +? ? +( ?8? ? ? ? /? ? +)?1 ? *? ? /? 4? ? +?; ?%+ ?% ?% ? ? ? ? ? 9? ?3? ? ?

35、? /? ? 541 4? 8 ?*?+ ?% ?/?+ ? *?+ ? *541+3 ? *541+? ? ?/? ? ?*? ?( *5410? ?8 *54103 ? ?/?0 ?% ?*?0 ? 57?541 ? ?5?)70+?)0 ? ?41)?7?541 ?( ?7?)?32 ?8 ?0?7? ? ? ?%?,7?* ?8% ?%?,7?* ?8? ?%?,7?* ?8? ?%?,7?* ?8? ?%?,7?* ?8? ?%3 %(%? ?8( ?%3 %(%? ?88 ?%?,7?* ?5?3 ?8 ?%? ? ?%? ?;% ?%? ?;? ?%? ?;? ?%? ?;? ?

36、%? ?;? ?%? ?;? ?%3 ?;( ?(%3 ?;8 ?; ?(%3 ?%? ?%? ?%? ?%? 0?%? (%+7?%?2D % ?%? +?% ?%? +? ?%? ? ? C ? 4?%? 53? ( ? C 8 4?%? 53? ?(? +?% 8? +? 8? +? ? +? ? +? ?8? +? ?8? +?( ? +?8 ? +? ?;? +?% ?8+ +? ?;? +? ?8+ +? ? +? ?8? +? ?8? +?( ?8+ +?8 ?8+ =?% ?(?, =? ?(?, +? ?%+ =? ?(?, =? ?(?, +?% ?8? +? ?8? +?

37、 ?8? +? ?8? ?% ?%?7?(. ? ?%? ? ?%? ? ?8%?,7?%* +?8? ?%? +?8? ?%? +?8? ?%? +?8( ?%? ? ? ?8?,7?* ? ? ? +?%? ? 541 ? /? ? ? ? 541 ?%? ?8 +? ?%? =?%( =?%; ?;%( +? ?%+7%? ? C ( 8 4?%? 0?;? ? +?8 ?%? ? ( ? +?% ? =?%? ?A?;? =?%? ?A?;? +? ( ?%? ?( ?%?,7?(* =?%? ?A? ?%+ ? ?3 ? ?%? +?% ?%+ % ? ? ?%? ?% ?%?,7?

38、* ? ?%? ? ?%?,7?* ? ?%? ? ?8%?,7?* ?( ?%? ?8 ?8%?,7?* ? ?%( ? ?* ? ?%? ?% ?%?,7?(* ? ?%? ? ?%? ? ?8%?,7?* ? ? ? /? ? 541 4?%? 8 ? ?%? ? ?%?,7?* ?( ?%? ?8 ?8%?,7?* ? ? ? /? ? 541 4?%( 8 ?%?,7?(* ?%8 ?;? ? ? ? ? ?% ?%? ?% ?%? ? ?%?,7?%* ? ? ? *2?3-?;(#9?1 ? ? ? ? ? ( 8 ?% ? 9?% *2?3-?;(#9?1 ? ? ,?%? 1

39、?(?0?%* ? ? ,?%? 1?0?%* ? ? ,?%? 1?%?0?%* ? ? ,?%? 1?0?%* ? ? ,?%? 1?0?%* ? ? ? /? ? 541 ?%? 8? +8 ?: +?(? ?: =? ?;%? ?-?* C?* ?* ? ? 9/? 9/? ?* &* ?/? ?C?* ?&* ?/? ?/? +)0? ?34-?* ?/?9/? ?34-?* ?/? ?/? ?2/? ?/? ?34-?* POWER NOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESS OTHERWISE SPECIFIED. 2.

40、CERAMIC CAPACITORS, ARE 50V 10%. UNLESS OTHERWISE SPECIFIED. - 22 - NOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESS OTHERWISE SPECIFIED. 2. CERAMIC CAPACITORS, ARE 50V 10%. UNLESS OTHERWISE SPECIFIED. SERVO - 23 - NOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESS OTHERWISE SPECIFIED. 2. CERAMIC

41、CAPACITORS, ARE 50V 10%. UNLESS OTHERWISE SPECIFIED. CONTROL MICRO - 24 - IC BLOCK DIAGRAM MAIN BOARD U1: DS1233DZ-5+T&R MAIN BOARD U2, U206, U207, IC202: NJM7805FA-#ZZZB IC203: NJM7812FA-#ZZZB 243 1 GND GND VccRESET OUT IN GND MAIN BOARD U3: QUAD 2INPUT EXCLUSIVE 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1A

42、 1B 1Y 2A 2B 2Y GND VCC 4B 4A 4Y 3B 3A 3Y MAIN BOARD U201: SN74HCU04D (SOP) 11A14VAC 21Y136A 32A126Y 42Y115A 53A105Y 63Y94A 7GND84Y MAIN BOARD U210, U211: OPA2134PA DIP OP AMP 1 BA 2 3 4 Out A -In A +In A V- 8 7 6 5 V+ OUT B _In B +In B + + - 25 - MAIN BOARD U202: TA7291SG(5M)22240239 MAIN BOARD U20

43、4: NJM7912FA-#ZZZB OUTIN GND MAIN BOARD U208: REG LM1086IT-ADJ MAIN BOARD IC204, IC208: LM1117S-3.3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? SERVO BOARD IC77: LM1117S-3.3 - 26 - MAIN BOARD IC207: MEMORY 24C1024 SOIC8 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

44、? ? ? ? ? ? ? ? ? ? MAIN BOARD IC209: REGULATOR TA48015F OUT GND IN 1 2 3 1IN Overcurrent- limiting circuit 2OUT 3GND Overheating detection circuit Reference voltage circuit Constant current circuit SERVO BOARD IC3: REGULATOR TA48015F - 27 - MAIN BOARD IC206: MCU TMP86FS49AUG VSS XOUT TEST VDD (XTIN) P21 (XTOUT) P22 RESET (STOP/INT5) P20 (INT0) P00 (TXD1) P02 (SI1) P04 (INT1) P03 (SO1) P05 (SCK1) P06 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 P65