background image

C803
10pF

C801
1UF

R802

124k1%

R803

22.1K1%

C807
100nF

R801

10k

L801

3.3uH 5A

C805

330uF/6.3V

C806

100uF/16V

C802
3.3nF

C804

100nF

1
2
3
4
5
6
7
8
9

J801

EN

1

VFB

2

VREG5

3

SS

4

GND

5

SW

6

VBST

7

VIN

8

U801

TPS54327

Vout

GND

Vout

GND

GND

C808
100nF

C809

10UF

C810

10UF

C811

10UF

+5VS
STB

1
2
3
4
5
6
7
8
9

J802

GND

+5VS

STB

 

 

DCDC 

board schematic

Summary of Contents for M52

Page 1: ...NAD SERVICE MANUAL M 52 M 52 Digital Music Vault Digital Music Vault ...

Page 2: ...he NAD M50 that appears in this guide is a reference model only and not included in the NAD M52 package The NAD M52 is compatible only with the NAD M50 The NAD M52 cannot be connected directly to a PC or MAC Check out the NAD website http nadelectronics com products masters series M52 Digital Music Vault for further information about the NAD M52 ...

Page 3: ...ATIONAL A DIVISION OF LENBROOK INDUSTRIES LIMITED All rights reserved NAD and the NAD logo are trademarks of NAD Electronics International a division of Lenbrook Industries Limited M52_QS_v04 Jan 2013 NAD M50 Digital Music Player ...

Page 4: ... rebuilding HDD steady blue rebuild failure LED of the rebuilding HDD flashing red individual disk healthy LED of the HDD steady blue disk failure LED of the HDD flashing red disk missing LED of the HDD steady red NOTE 1 unit has invalid RAID set may be caused by inserting a HDD that was part of other RAID set unit Wiping the last few sectors of the HDD will solve the problem see Rebuild note 1 Or...

Page 5: ...he disks and is completely irreversible 2 How to initialize and configure RAID array Make sure all the hard disks are healthy Power on the unit Press reset button at the rear panel soon after the hard disk LEDs starts to flash Press reset button again after the LEDs flash 20 times after the above step After this step all the HDD LEDs become steady blue At this point all the data in the hard disks ...

Page 6: ...oved and then put back at the same position Power down the unit Unplug one healthy HDD Power up the unit until it s steady 2 HDDs LED blue unplugged HDD LED red this step leaves the unit in degraded mode Power down the unit Plug the HDD back Power up the unit this step will rebuild the RAID array of the unit 3 How to rebuild a RAID array with a new healthy HDD This case happens when one HDD is rep...

Page 7: ...o Ubuntu Linux remi ubuntu sudo dd if dev zero of dev sdb bs 1024 count 2048 seek 976761000 dd writing dev sdb No space left on device this warning is ok 1585 0 records in 1584 0 records out 1622016 bytes 1 6 MB copied 1 43649 s 1 1 MB s 2 rebuild time The rebuild time takes approximately 4 hours for three 1TB SATA II disk e g Seagate Pipeline HD 2 and 2 5 hours for three 1TB SATA III disk e g Sea...

Page 8: ...imize peak power consumption during motor spin up 5 Can other HDD brands been used e g WD red M52 allows the SATA disk drives to be of different brands and sizes The capacity of a set of RAID disks is twice of the smallest disk size leaving the upper part of any larger disk unused However HDDs of identical capacities and same models are recommended In case you can t get identical HDDs for a RAID s...

Page 9: ...3 89 211001 0 EPE Bottom 1 4 00 65200 00 M52 Unit 1 5 87 211001 0 Non woven Cloth Bag 1 6 90 001001 0 Poly bag 1 7 89 211002 0 EPE Top 1 8 88 043003 0 M15Accessories Box 1 9 30 46521 00 Quick Start Guide 1 10 88 043004 0 M15 Box Sheet 1 11 A15 16250 07 AC Cord 1 A15 13125 00 AC Cord AH 1 12 29 65201 00 USB Cable 1 ...

Page 10: ...S009 F001 F002 F003 F004 F006 T001 R001 R002 R003 C001 C002 C003 C005 C006 C010 C011 C004 T002 F005 S001 S002 S003 S003 S004 S005 S007 S006 S008 S009 S010 S011 S012 C007 C012 S004 C009 C008 C009 T002 ...

Page 11: ... C011 01 65201 00 Decode Board 1 S006 61 024108 0 Self Taping Screw STB4 8 4 C012 01 65208 00 DC DC Board 1 S007 61 224508 1 Machine Screw MH4x8 8 S008 61 094510 0 Screw TGM 10SW 18 S009 61 246508 1 Machine Screw MB6X8 4 F001 70 212001 1B Fascia 1 S010 62 010402 0 Nut M4 1 F002 67 212002 1 Subfascia 1 S011 63 020411 0 Spring Washer Φ4 1 F003 70 048013 0 Power Button 1 S012 63 010408 0 Plain Washer...

Page 12: ...M52 BLOCK DIAGRAM HDD1 HDD2 HDD3 OXUFS936QSE RAID Controllers SATA SATA SATA STB KEY LED LED LED LED PIC18F26K20 STB 3 3V 1 2V SMPS ...

Page 13: ... S101 Key C200 0 1uF C201 0 1uF C202 0 1uF C203 0 1uF KGND KGND KGND 1 3 2 RED BLUE D102 2LED 1 3 2 RED BLUE D103 2LED SATA0 SATA1 SATA2 1 2 3 4 5 6 7 8 9 10 11 12 CON118 12 HEADER 1 2 D101 Blue Amber 1 3 2 RED BLUE D104 2LED KEY1 ...

Page 14: ... 1 3 4 D906 KBP208 ZV901 471KD14 R911 330k C926 2200uF 16V 1 2 3 J901 CON3 R918 330k R917 330k 1 2 3 4 L903 6mH CX901 220nF 250VAC C928 102 R924 62R C918 100uF 400V CY902 1nF 1KV CY904 1nF 1KV C917 10nF 1kV R914 47k 3W R922 6 8R C924 100nF R925 1K R928 12K 1 C929 104 R927 10k 2 3 1 IC902 TL431 D909 1n4007 D910 MURS120 R926 1k R913 750K R919 6 8k C 1 L 2 X 3 S 4 F 5 D 7 U905 TOP246Y C925 4 7uF 50V ...

Page 15: ...3uH 5A C805 330uF 6 3V C806 100uF 16V C802 3 3nF C804 100nF 1 2 3 4 5 6 7 8 9 J801 EN 1 VFB 2 VREG5 3 SS 4 GND 5 SW 6 VBST 7 VIN 8 U801 TPS54327 Vout GND Vout GND GND C808 100nF C809 10UF C810 10UF C811 10UF 5VS STB 1 2 3 4 5 6 7 8 9 J802 GND 5VS STB DCDC board schematic ...

Page 16: ...keyboard Layout ...

Page 17: ...DCDC board layout ...

Page 18: ...SMPS board layout ...

Reviews: