Sony Ericsson NWZ-A828, NWZ-A826K, NWZ-A829 Standby current check, Charge current check, Audio

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NWZ-A826/A826K/A828/A828K/A829

4-1-3. Standby current check

This mode is used in case standby current is checked.

Checking method:

1.Enter the test mode.

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

3.Press the [v]/[V] key to select the “DSVCHK”.

4.Press the [u] key, enter the state of the deep sleep.

5.Press the [BACK] key, release the state of the deep sleep.

liquid crystal display

POWER DSVCHK

OK

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

4-1-4. Charge current check

This mode is used in case charge current is checked.

Checking method:

1.Enter the test mode.

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

3.Press the [v]/[V] key to select the “CHGCHK”.

4.Press the [u] key, the charge setting is displayed.

liquid crystal display

POWER CHGCHK

AC

AC

5.In this state, each time the [OPTION] key is pressed, the port setting for the charge is changed as shown in the table below.

 

 

Port control

 

Display

CHG_XCHGEN

CHG_PEN1

CHG_PEN2

AC

L

H

H

USB500

L

H

H

USB100

L

H

L

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

4-1-5. Battery voltage detection check

This mode is used in case battery voltage is checked.

Checking method:

1.Enter the test mode.

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

3.Press the [v]/[V] key to select the “BATTCHK”.

4.Press the [u] key, the battery voltage is displayed.

When the battery voltage cannot be confirmed, “ERROR” is displayed.

liquid crystal display

POWER BATTCHK

X.XXXV

X.XXXV: Battery voltage

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

4-2. Audio

While playing the audio track, it's in a repeat state. If [BACK] key is pressed, it's stopped.

Press the [VOL +] key to switch the HP/LINE.

liquid crystal display

MPTAPP MENU

POWER

AUDIO OUTPUT

VIDEO SN

OTHER F1

CLESTE F2

DAC SEPLR

BLUETOOTH SEPRL

SHUTDOWN MAXOUT

EXITTEST NMLZR

SPCHK

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Contents NWZ-A826/A826K/A828/A828K/A829 889-048-01NWZ-A826/A826K/A828/A828K/A829 Flexible Circuit Board Repairing DisassemblyDiagrams Section Servicing NotesNWZ-A826K AEP, UKNWZ-A828K Section GeneralDisassembly Flow Section DisassemblyCover REAR, Rear Assy Battery Main BoardLCD Assy Power supply voltage check Section Test ModeOperation of the Test Mode 4-1. Power Charge current check Battery voltage detection 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 Liquid crystal display is checked Sound pressure regulation level checkVideo OtherKey check Destination settingSound pressure regulation setting Frequency check that presses keyBASS-Gain/Fc setting Clear stereo setting With cableClear stereo setting No cable TREBLE-Gain/Fc settingBluetooth connection check Bluetooth address setting Bluetooth address is setShutdown Section Diagrams Block Diagram PANEL, Power Supply Section Side a For Printed Wiring BoardsFor Schematic Diagrams 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 GND NandwezIOB VccvbusNANDDA2 NANDRBZ0Nandale VDDL1NANDRBZ1 LcdenableUsbsuspd BtxrstLCDB0 ResetzNANDCEZ0 LCDG4, LCDG5Wakeup VloginSdrcasz PsmlodetSdrclk TustoSDRA0 TM2AD6 AD4 XholdkeyAD5 Keywake AD7 SPI0CSZ2DD1GNDA DD1INB1, DD1INB2DD1VFBK2 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 MainLED SMLA13BDTT86ST Bluetooth CONNECTOR, FFC/FPC ZIF 11PMULTIPLE, Connector Ceramic Chip 5PFTransistor InductorCOIL,COMMONMODECHOKE SMD1210 Transistor EMX18SWITCH, Slide Hold Terminal Short Chip SwitchSWITCH, Tactil Reset TERMINAL, ContactBattery Assy US, CND, AEP, UK, FR, EE CONNECTOR, FFC/FPC ZIF 39PINBATTERY, Lithium ION Storage VaristorNWZ-A828K AEP AccessoriesMANUAL, Instruction English NWZ-A826K AEP/NWZ-A828K AEPMemo Revision History Ver Date Description of Revision