Nexo NXAMP 4X4

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NXAMP4x4

• PN-AN Circuit Board

Pattern side

（パターン側）

2NA-WJ97170-10

Main Page

Contents1
Connecting the Plug and Cord2
Panel Layout3
Front Panel3
Rear Panel3
Circuit Board Layout4
Service Precautions5
Safety Measures5
PSANH Circuit Board5
PSANH Circuit Diagram6
Overall Assembly Wiring7
Wiring of the PN-AN Circuit Board7
Wiring of the Power Switch8
Wiring of the FAN9
Attaching of the Support Cushion9
CHN Destination10
U/J Destination10
Wiring of the AC-INLET10
Wiring of the PA Unit12
Wiring and Fastening14
Way of Fastening Wire14
Change of the Destination21
Insulation Distance between Wire (WK17110)22
Adhesive Cloth Tape22
Confirmation of Switch LED Lighting23
Method of Fixing PN FFC Assembly24
Disassembly Procedures25
Top Cover and NX-DFLT Card25
PSANHA Circuit Board27
OUTANH Circuit Board28
PSANHB Circuit Board29
INANH Circuit Board30
RS232-GPI Circuit Board30
Upper Left (CH1) PA Unit31
Upper Right (CH2) PA Unit31
Lower Left (CH3) PA Unit32
Lower Right (CH4) PA Unit32
Front Panel Assembly33
PN-AN Circuit Board33
Upper Left DC Fan34
Upper Right DC Fan34
Lower Left DC Fan35
Lower Right DC Fan35
Power Switch36
Lsi Pin Description37
IC Block Diagram38
Sn74Abt245Bnsr (Xu009A0)42
Circuit Boards44
CONTROL Circuit Board46
PAANH Circuit Board56
PSANHA, PSANHB Circuit Board58
Test Connection Image64
Test Program64
Required Items64
Operation65
Entry of the Test Program65
ENCODER Test65
Executing the Test and Judgment Display65
RS-232C Test66
GPI Test66
LCD Test66
Lighting Order66
PORT Test67
DSP Test67
12C Test67
WORD CLOCK Test67
FLASH Test68
SLOT Test68
FAN Test68
ATTENUATION Test68
Calibration69
BRIDGE Test69
ANALOG Test69
STANDBY Test70
Quit70
Inspections78
Inspection with Ordinary Mode79
Power on Sequence79
Power Consumption When Idling79
PEAK Indicator79
Link out80
Efficiency80
Frequency Response80
Distortion80
Channel Separation81
Output Noise Level81
Stability81
Confirming Operation of NX-DFLT Card82
Gain82
Inspection with BRIDGE Mode82
Updating the Firmware88
Downloading and Installing the Software for Update88
Connection88
Updating Operation88
JTAG Programmer Screen89
JTAG-ISP Operations Screen89
Hardware Setting Screen89
Table of Contents92
Parts List92
Warning92
Overall Assembly93
Pa Unit98
Lcd Assembly100
- Details on PSANHB Circuit Board101
- Details on PSANHA Circuit Board101
- Details on PAANH Circuit Board101
Locations of Heat Sink Units101
Heat Sink Unit L100102
Heat Sink Unit L100103
Heat Sink Unit L60104
Heat Sink Unit L60105
Heat Sink Unit L50106
Heat Sink Unit L50107
Heat Sink Unit Osh108
Heat Sink Unit109
Heat Sink Unit Mp-5110
Electrical Parts111
- Block Diagram131
- Circuit Diagram131
- Notation for Circuit Diagrams131
- IC & Diode Figures132
- Wiring Diagram133
- Block Diagram134
- Block Diagram135
- Block Diagram136
- Block Diagram137
- Block Diagram138
- Nxamp4X4 LEVEL DIAGRAM138
- Parts List139
- Parts List140
- Parts List141
- Parts List142
- Parts List143
- Parts List144
- Inanh145
- Parts List145
- Outanh146
Parts List146
Pn-An147
- Parts List147
- Parts List148
- Rs232-Gpi148
- Opt-An, Nx-Dflt149
- Parts List149
- Paanh150
- Parts List150
- Psanha/Psanhb151
- Parts List151
- Parts List152
- Parts List153

Table of Contents

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