Sony NW-A808, NW-A806 service manual Output check, 2. S/N check, Frequency characteristic 1 check

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NW-A805/A806/A808/NWZ-A815/A816/A818

4-2-1. Output check

“1 kHz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.

Checking method:

1.Enter the test mode.

2.Press the v / V key to select the “AUDIO”, and press the B key to enter the minor item.

3.Press the v / V key to select the “OUTPUT”.

4.Press the u key, “1 kHz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.

liquid crystal display

AUDIO OUTPUT 1kHz 0dBs L/Rch HPOUT [ VOL: 25 ]

START

5. Press the [BACK] key, return to minor item selection screen.

4-2-2. S/N check

“Infinity Zero VOLUME: 30” audio signal is outputted.

Checking method:

1.Enter the test mode.

2.Press the v / V key to select the “AUDIO”, and press the B key to enter the minor item.

3.Press the v / V key to select the “SN”.

4.Press the u key, “Infinity Zero VOLUME: 30” audio signal is outputted.

liquid crystal display

AUDIO SN

Infinity Zero

HPOUT [ VOL: 30 ]

4-2-3. Frequency characteristic 1 check

“20 Hz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.

Checking method:

1.Enter the test mode.

2.Press the v / V key to select the “AUDIO”, and press the B key to enter the minor item.

3.Press the v / V key to select the “F1”.

4.Press the u key, “20 Hz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.

liquid crystal display

AUDIO F1

20Hz 0dBs L/Rch HPOUT [ VOL: 25 ]

START

5. Press the [BACK] key, return to minor item selection screen.

4-2-4. Frequency characteristic 2 check

“20 kHz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.

Checking method:

1.Enter the test mode.

2.Press the v / V key to select the “AUDIO”, and press the B key to enter the minor item.

3.Press the v / V key to select the “F2”.

4.Press the u key, “20 kHz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.

liquid crystal display

AUDIO F2

20kHz 0dBs L/Rch HPOUT [ VOL: 25 ]

START

5. Press the [BACK] key, return to minor item selection screen.

START

5. Press the [BACK] key, return to minor item selection screen.

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Contents Specifications NW-A805/A806/A808NW-A805/A806/A808/NWZ-A815/A816/A818 Diagrams Table of ContentsDisassembly Flexible Circuit Board RepairingFormatting Memory Format Color Variation Whenusing the headphone extension cord Parts and ControlsDisassembly Flow Rear Cabinet AssyHolder Connector Main BoardNand BOARD, SVX Switch Flexible PWB Assy About Holding the bent partSVX LCD Assy LCD801, Battery Assy Front ButtonFront Cabinet Assy Consumption current audio playback check Power supply voltage checkOperation of the Test Mode 4-1. Power Charge current check Battery voltage checkStandby current check AudioOutput check Frequency characteristic 1 checkFrequency characteristic 2 check 2. S/N checkMaximum output check CH separation L-ch checkCH separation R-ch check Normalizer checkLCD display check Sound pressure regulation level checkVideo OtherKey check Destination settingSound pressure regulation setting FormatSection Diagrams Block DiagramAudio Video Location SemiconductorUses unleaded solder Main Board Side B Uses unleaded solder Semiconductor LocationMain Board 1/6 Schematic Diagram Main /6 See page 28 for IC Block Diagrams IIC IC701 IC803 Main Board 6/6 IC Block Diagrams Main Board IC301 XC6401FF58DR IC303 MAX4764ETB+TG069MAX8677AETG IC Pin Function Description Pin No Pin Name DescriptionVDDL0 IOBVccvbus NANDCEZ2Vccvbat SwadpCapvbdl IdpullupAB0CSZ2 FlashclkChgvbus AB0XACKSDRDATA26 ResetzSDRDATA28 LcdhsyncSDRDQM1 VloginLcdpxclk SdrwezDspdet VpllCKI LcdbltctlAB1 VDDL0 VanainVana AB2 XusbokKeywake OscoutXholdkey SPI0CSZ2DD2LX3 DD2LX1 VGP45INDD2VFB2 DD2LX2Vaux B5OUTVCCIO2 B1OUTExploded Views Rear Cabinet Section NW-A805/A806/A808Rear Cabinet Section NWZ-A815/A816/A818 BLACK, SILVER, VIOLET, Blue models onlyMain BOARD, Nand Board Section NW-A805/A806/A808 109Main BOARD, Nand Board Section NWZ-A815/A816/A818 159Front Cabinet Section 208 207Electrical Parts List MainCeramic Chip 5PF CS42L51-CNZR Switch Nand NW-A805 E, MX, AUS, JECD-ROM Assy Russia Help Revision History