Sony Ericsson NWZ-A829 CH separation L-ch check, CH separation R-ch check, Maximum output check

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NWZ-A826/A826K/A828/A828K/A829

4-2-5. CH separation (L-ch) check

“1 kHz 0 dBs L-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 “SEPLR”.

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

liquid crystal display

AUDIO SEPLR 1kHz 0dBs Lch HPOUT [ VOL: 25 ]

START

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

4-2-6. CH separation (R-ch) check

“1 kHz 0 dBs 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 “SEPRL”.

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

liquid crystal display

AUDIO SEPRL 1kHz 0dBs Rch HPOUT [ VOL: 25 ]

START

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

4-2-7. Maximum output check

“1 kHz 0 dBs L-ch/R-ch VOLUME: 30” (Headphone output when

AVLS operates: “1 kHz 0 dBs L-ch/R-ch VOLUME: 13”) 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 “MAXOUT”.

4.Press the [u] key, “1 kHz 0 dBs L-ch/R-ch VOLUME: 30”

(Headphone output when AVLS operates: “1 kHz 0 dBs L-ch/

R-ch VOLUME: 13”) audio signal is outputted.

liquid crystal display

AUDIO MAXOUT 1kHz 0dBs L/Rch HPOUT [ VOL: 30 ]

AVLS OFF

START

5.In this state, each time the [OPTION] key is pressed, AVLS on/off switch is performed.

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

4-2-8. Normalizer check

“1 kHz – 24 dBs L-ch/R-ch VOLUME: 30” audio signal is output- ted.

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 “NMLZR”.

4.Press the [u] key, “1 kHz – 24 dBs L-ch/R-ch VOLUME: 30” audio signal is outputted.

liquid crystal display

AUDIO NMLZR

1kHz –24dBs L/Rch HPOUT [ VOL: 30 ]

START

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

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Contents NWZ-A826/A826K/A828/A828K/A829 889-048-01NWZ-A826/A826K/A828/A828K/A829 Disassembly DiagramsFlexible Circuit Board Repairing Section Servicing NotesAEP, UK NWZ-A826KNWZ-A828K Section GeneralSection Disassembly Disassembly FlowCover REAR, Rear Assy Battery Main BoardLCD Assy Section Test Mode Power supply voltage check Operation of the Test Mode 4-1. Power Battery voltage detection check Standby current checkCharge current check AudioFrequency characteristic 1 check Frequency characteristic 2 checkOutput check 2. S/N checkCH separation L-ch check CH separation R-ch checkMaximum output check Normalizer checkSound pressure regulation level check VideoLCD display check Liquid crystal display is checked OtherDestination setting Sound pressure regulation settingKey check Frequency check that presses keyClear stereo setting With cable Clear stereo setting No cableBASS-Gain/Fc setting TREBLE-Gain/Fc settingBluetooth address setting Bluetooth address is set Bluetooth connection checkShutdown Section Diagrams Block Diagram PANEL, Power Supply Section For Printed Wiring Boards For Schematic DiagramsSide a Side BPrinted Wiring Board Main Board Side a Uses unleaded solder Semiconductor LocationPrinted Wiring Board Main Board Side B Uses unleaded solder 123 Main Board 1/7 IC701 123 Main Board 3/7 See page 32 for IC Block Diagrams BoardMain Board Main Board 6/7 Main Board 7/7 SW Board Side a SW Board Side B Uses unleaded solder123 SW Board 1/2 SW Board 2/2 IC Block Diagrams Main Board IC301 XC6401FF58DRMAX8671CETL+TG069 SW BoardIC Pin Function Description Nandwez IOBGND VccvbusNANDRBZ0 NandaleNANDDA2 VDDL1Lcdenable UsbsuspdNANDRBZ1 BtxrstResetz NANDCEZ0LCDB0 LCDG4, LCDG5Vlogin SdrcaszWakeup PsmlodetTusto SDRA0Sdrclk TM2AD4 Xholdkey AD5 KeywakeAD6 AD7 SPI0CSZ2DD1INB1, DD1INB2 DD1VFBK2DD1GNDA VGP1Section Exploded Views Cover Rear SectionRear Assy Section 106 1-756-702-11 BATTERY, Lithium ION Storage Main Board SectionFront Section Section Electrical Parts List MainCONNECTOR, FFC/FPC ZIF 11P MULTIPLE, ConnectorLED SMLA13BDTT86ST Bluetooth Ceramic Chip 5PFInductor COIL,COMMONMODECHOKE SMD1210Transistor Transistor EMX18Short Chip Switch SWITCH, Tactil ResetSWITCH, Slide Hold Terminal TERMINAL, ContactCONNECTOR, FFC/FPC ZIF 39PIN BATTERY, Lithium ION StorageBattery Assy US, CND, AEP, UK, FR, EE VaristorAccessories MANUAL, Instruction EnglishNWZ-A828K AEP NWZ-A826K AEP/NWZ-A828K AEPMemo Revision History Ver Date Description of Revision