Mackie_HDR24-96_Service_Manual电路图.pdf

《Mackie_HDR24-96_Service_Manual电路图.pdf》由会员分享，可在线阅读，更多相关《Mackie_HDR24-96_Service_Manual电路图.pdf（42页珍藏版）》请在收音机爱好者资料库上搜索。

1、HDR 24/96 Hard Disk Recorder SERVICE MANUAL 2001 MACKIE DESIGNS, INC. RadioFans.CN 收音机爱 好者资料库 This is a collection of all the 8.5 x 11 inch pages, useful if you want to print all the small pages at once. 2 SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY EXPERIENCED REPAIR TECHNICIANS ONLY RadioFans.

2、CN 收音机爱 好者资料库 3 Additional Safety Information The following notice concerns the lithium battery located on the motherboard inside the HDR 24/96 chassis. WARNING Service on the HDR 24/96 must only be undertaken by experienced service technicians. ! SMD ! The HDR 24/96 makes extensive use of surface m

3、ount components. Servicing technicians should have the tools, experience and patience to perform surface mount rework. ! ESD ! The HDR 24/96 contains components that may be damaged by elecrostatic discharge. All standard ESD precautions must be taken when servicing. CAUTION: DANGER OF EXPLOSION IF B

4、ATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF USED BATTERIES ACCORDING TO THE MANUFACTURERS INSTRUCTIONS. ATTENTION: IL Y A DANGER DEXPLOSION SIL Y A REMPLACEMENT INCORRECT DE LA BATTERIE, REMPLACER UNIQUEMENT AVEC UNE BATTE

5、RIE DU MEME TYPE OU DUN TYPE QUIVALENT RECOMMAND PAR LE CONSTRUCTEUR. METTRE AU REBUT LES BATTERIES USAGES CONFORMMENT AUX INSTRUCTIONS DU FABRICANT. Warning!: Before applying power to the HDR24/96, make sure that the Voltage Selector switch next to the AC inlet jack on the rear panel is set to the

6、line voltage used in your region. Powering-on the HDR24/96 with the Voltage Selector switch set incorrectly will cause an electrical and fire hazard that may result in irreparable damage to the unit. RadioFans.CN 收音机爱 好者资料库 4 CONTENTS Safety . 2, 3 Introduction .5 Ribbon Cables . 6 Connectors.8 Acum

7、a board notes .20 Small Remote Self-Test.21 BIOS Settings .22 Motherboard layout .25 Quick Parts .26 Parts.A-1 Assembly Instructions .B-1 Exploded Views.C-1 Wiring Diagram .WD-1 Schematics and PCB layouts I/O Cards .119-1 Front Panel .178-1 Backplane.179-1 Brain .180-1 Remote I/O.268-1 Small Remote.

8、291-1 Poststamp .359-1 Acuma .367-1 5 Introduction This manual contains service information for the HDR 24/96 Hard Disk Recorder. To service the HDR 24/96, technicians should be familiar with op-amp based and discrete analog circuitry, digital troubleshooting, microprocessors, digital audio, DSP, ES

9、D, ESP, and the operation/application of Hard Disk Recorders. Presentation of this manual does not constitute endorsement of qualifications by Mackie Designs. This manual is available in Adobe Portable Document Format (PDF), as part of Mackie Designs Digital Service CD-ROM (part# 820-163-00). This i

10、s available to all Service centers authorized to repair the HDR 24/96. Also included on the CD-ROM are the schematics, PCB layouts, parts lists, assembly drawings, and the owners manual. It is essential that you become familiar with the owners manual as it will be a great help for you to verify cust

11、omers complaints, and to check for correct operation. SERVICE TECHNICAL ASSISTANCE Mackie Designs, Service Technical Assistance, is available 8AM - 5PM PST, Monday through Friday for Authorized Mackie Service Centers, at 1-800-258-6883. Feel free to call with any questions and speak with a carefully

12、-calibrated technician. If one is not available, leave a detailed message and a qualified Mackoid will return your call asap. DISCLAIMER The information contained in this manual is proprietary to Mackie Designs, Inc. The entire manual is protected under copyright and may not be reproduced by any mea

13、ns without express written permission from Mackie Designs Inc. GETTING STARTED Think of the HDR 24/96 as a standard PC with extra Mackie boards inside. Standard PC troubleshooting techniques and commercially available diagnostic DOS software can be applied to repair the HDR 24/96. A preliminary insp

14、ection will often reveal a simple problem, such as a bad connection somewhere, perhaps a loose cable, a bad switch or control, bad EEPROM or the CPUs CMOS settings may need to be reset. Check out the service bulletins, there is one which explains how to replace the EEPROM. Our technical support team

15、 are available to discuss any problems and offer solutions. 6 Ribbon Cables Part#Description RevQty 040-383-00RIB 28GA 10C 14.0 PLZD A1 040-384-00RIB 28GA 26C 4IN PLZD B1 040-385-00RIB 28G TRANS 34C 18.5IN B1 040-386-00RIB 28G 26C .100 14.50IN B1 040-387-00RIB 28GA 14C 16.0 PLZD A1 040-390-00RIB 28G

16、A 10C 7.00 PLZD B2 040-393-00CBL ASY 22G 4C/6P 9.0IN A1 040-438-00RIB 28GA 16P .100 15.50IN A1 040-489-00DIS 18GA 4C 4.5IN PWR/MOL A1 040-496-00DIS 18GA 4C 14IN PWR EX A1 040-497-00DIS 22G 1007 2C/12P A1 7 8 This table shows each connector and the boards they connect to. The following pages show eac

17、h connector in detail, including the labeling and designation on each pin of the connectors. J #Pins FromToDescriptionCable Page J2 . 26. Front Panel . J2 Brain board . Clock, Latch, Data . 9 J2 . 4 . Backplane. J2 Post Stamp . DC Power . 040-489-00 . 10 J1 . 10 . Backplane. J1 Brain board . Mute, R

18、eset, IO TX, IO RX . 040-383-00 . 10 J3 . 34 . Backplane. J3 Acuma board . CLK, DT data transmit. 040-385-00 . 10 J4 . 26 . Backplane. J4 Acuma board . DR data receive . 040-386-00 . 10 J18 . 62 . Backplane. Card Connector. various . 11 J19 . 62 . Backplane. Card Connector. various . 11 J20 . 62 . B

19、ackplane. Card Connector. various . 11 J9 . 4 . Brain board . Power Supply. DC Power . 12 J5 . 14 . Brain board . J5 Remote I/O board . COM1, COM2, Punch. 040-387-00 . 12 J7 . 16. Brain board . VFD. Display data . 040-438-00 . 12 J3 . 2 . Brain board . Motherboard. Flasher, +5V . 12 J2 . 26 . Brain

20、board . J2 Front Panel board . Clock, latch, data. 040-384-00 . 13 J8 . 2 . Brain board . VFD Display. 13 J1 . 10 . Brain board . J1 Backplane. Mute, Reset, IO RX, IO TX . 040-383-00 . 13 J2 . 4 . Remote I/O . Power Supply. DC Power . 14 J9 . 10 . Remote I/O . Serial 2 Mother board. COM2. 040-390-00

21、 . 14 J10 . 10 . Remote I/O . Serial 1 Mother board. COM1. 040-390-00 . 14 J5 . 14 . Remote I/O . J5 Brain board . COM1, COM2, Punch. 040-387-00 . 15 J4 . 3 . Remote I/O . 1/4” TRS jack . Punch . 15 J3 . 9 . Remote I/O . Mouse . Mouse data . 15 J6 . 6 . Remote I/O . Motherbrd Mouseport . Mouse data

22、. 040-393-00 . 15 J1 . 12. Remote I/O . Small Remote. Remote data . 15 J1 . 4 . Post Stamp. Power Supply. DC Power . 16 J2 . 4 . Post Stamp. J2 Backplane. DC Power . 16 J3 . 34. Acuma board . J3 Backplane. Mackie Bus Output . 040-385-00 . 17 J4 . 26. Acuma board . J4 Backplane. Mackie Bus Input. 040

23、-386-00 . 17 J5 . 6 . Acuma board . SMPTE 1/4” Jack. SMPTE . 18 J2 . 2 . Acuma board . CLK IN BNC Jack. CLK IN. 18 J1 . 2 . Acuma board . CLK OUT BNC Jack . CLK OUT . 18 PCI . 124. Acuma board . PCI Connector. PCI data . 19 Connectors 9 Front Panel Connector This connects to J2 of the Brain board, s

24、ee page 13 10 BackPlane Connectors This connects to J1 of the Brain board, see page 13 This connects to J3 of the Acuma board, see page 17 This connects to J4 of the Acuma board, see page 17 Power from J2 of poststamp board, see page 16 11 BackPlane Connectors 12 Brain Board Connectors This connects

25、 to J5 of the remote board, see page 15 This connects to the VFD This connects to power supply 13 Brain Board Connectors This connects to J1 of the backplane board, see page 10 This connects to J2 of the front panel board, see page 9 14 Remote Board Connectors This connects to Serial 2 of the mother

26、board This connects to Serial 1 of the motherboard 15 Remote Board Connectors J6 connects to the Mouseport of the motherboard J5 connects to J5 of the brain board, see page 12 16 Post Stamp Board Connectors This connects to power supply This connects to J2 of the backplane board, see page 10 17 Acum

27、a Board Connectors This connects to J3 of the Backplane, see page 10 This connects to J4 of the Motherboard, see page 10 18 Acuma Board Connectors SMPTE (TRS 1/4”) CLK IN (BNC) CLK OUT (BNC) 19 PCI connector Acuma Board Connectors 20 Acuma Board notes The Acuma board is used to transfer audio from t

28、he converter card cage to the PC via the PCI bus. It is also where the SMPTE and Word Clock connection comes into the PC. Physically, it is a card which fits into the PCI bus of the PC, and connects via 2 ribbon cables to the card cage. It has jacks which extend out the back of the unit for WCLK in

29、(BNC), WCLK out (BNC), and SMPTE (1/4). There is also a pushbutton for selecting termination impedance. All the audio data comes over the ribbon cables from the card cages to the Acuma card. This data is in digital format. If channels are dead, the ribbon cable connectors are a good place to start l

30、ooking since they are readily accessible. For instance, for HDR input channels, look at the signals on J4. If you see activity on here, then the problem is on the Acuma card (check U9). If no activity is visible, the problem is within the card cage - possibly a bad I/O card. For output channels, loo

31、k on J3. These signals flow the other way, so if no activity is visible, the problem is on the Acuma card. A failure in the SMPTE transmit or sync capability could be related to a bad component or faulty joint in the SMPTE circuit. A small amount of analog circuitry (around U17) is used to buffer in

32、coming signals or generate outgoing signals, and then these are converted to digital signals (U16) and fed into the FPGA (U3). Tracing from the FPGA to the jacks might help to spot a problem. The card contains a PLL for generating WCLK. If WCLK out capabilities are defective, this circuit could be t

33、he culprit. Chip U8 is the guts of this. The FPGA (U3) generates signals (FIN_A and FIN_B) which are smoothed out by the PLL, visible at TP2. This circuit is extremely sensitive, and bad performance may be caused by a poor joint or worn out passive component around U8. WCLK sync capability is fairly

34、 simple. Incoming signals are buffered (U10) and then fed to the FPGA (U3) . Again, tracing from the FPGA back to the jack is a good way to start. A lot of the “complicated stuff” is handled within the DSP (U1) or FPGA (U3). If either of these components fail, rework is not possible and the card wil

35、l need replacement. J3(output)J4(input)U9 U16 DSP U1 FPGA U3 U8TP2 U17 in out SMPTE Term switch U10 21 There is a self-test for the small remote which will help you verify that it is working correctly. Follow the steps below to enter the self-test mode: 1.Connect the small remote to the back of the

36、HDR24/96. 2.Put a floppy in the HDR to keep it from booting up (so it will provide power for the small remote without resetting it). 3.On the small remote, hold down Rec Arm 1+2 while powering up the HDR24/96. 4.All leds should light, the firmware version will be displayed on the 7-segment displays (such as 1.03). In this TEST MODE: Pressing any button will extinguish the associated LED The INC / DEC buttons control the 7-seg displays and VU meter The footswitch controls the (minutes) LED