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YES
Check Adaptor
Check main Board
5V RIGHT?
Change Adaptor
YES
NO
NO
Amber LED ON?
No Power or Power shuts off
immediately
3V3S RIGHT?
NO
NO
Short circuit of 3V3s?
Replace U105
Check U100 U101 U103 U104
Change FPP board
YES
Check U103
Change Touch board
YES
Front panel and top
SPI signal to FPP
YES
NO
YES
short circuit on 5VD 3V3D?
YES
NO
5VD correct?
YES
YES
NO
correct?
Check U624
Check U626 U408
Check Q611 Q612 Q613
NO
NO
Check U103
Display sample rate
B
Check J400
Check U499
Check U400 U401
Check Touch board and cable
Touch Power key
LEDs turn white?
Connect USB cable to computer
Computer found hardware
and D1050
Check driver on computer
TROUBLE SHOOTING GUIDE A
11
Summary of Contents for D5100
Page 1: ...NAD SERVICE MANUAL D1050 USB DAC D1050 USB DAC ...
Page 7: ...WIRING DIAGRAM 7 ...
Page 22: ...1 DAC BOARD VM1 0 PCB LAYOUT 22 Top Layer ...
Page 23: ...1 DAC BOARD VM1 0 23 Bottom Layer ...
Page 24: ...2 HPAMP BOARD VM1 0 24 Bottom Layer Top Layer 3 HP CKX BOARD VM1 0 Top Layer Bottom Layer ...
Page 25: ...4 MAIN BOARD VM1 0 25 Top Layer ...
Page 26: ...4 MAIN BOARD VM1 0 26 Bottom Layer ...
Page 27: ...5 FPP BOARD VM1 0 27 Top Layer Bottom Layer ...
Page 28: ...6 ENCODE BOARD VM1 0 28 Top Layer 7 TOUCH A BOARD VM1 0 Bottom Layer Top Layer Bottom Layer ...
Page 29: ...8 TOUCH B BOARD VM1 0 29 Top Layer Bottom Layer ...
Page 40: ...SERVICE MANUAL NAD 2014 D1050 USB DAC NAD ELECTRONICS LTD TORONTO ...