Sony Ericsson NWZ-A826K AD4 Xholdkey, AD5 Keywake, AD6, AD7 SPI0CSZ2, AD8 VDDL1, AD9 IOC, GND2

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NWZ-A826/A826K/A828/A828K/A829

Pin No.

Pin Name

I/O

Description

AD4

XHOLD_KEY

I

HOLD switch input terminal

AD5

KEY_WAKE

I

Wake up signal input terminal

AD6

NC

-

Not used

AD7

SPI0_CSZ2

O

Chip select signal output to the A/D, D/A converter

AD8

VDD_L1

I

Power supply input terminal (+1.2V)

AD9

IO_C

-

Not used

AD10 to

NC

-

Not used

AD13

 

 

 

AD14

AVDD_LPLL

I

Power supply input terminal (+1.2V)

AD15

AVDD_HPLL

I

Power supply input terminal (+1.2V)

AD16

NC

-

Not used

AD17

BKBAT

I

Rechargeable battery voltage detection signal input terminal

AD18

IO_A

-

Not used

AD19

NC

-

Not used

AD20

USB_PWRCTL

-

Not used

AD21

GND2

-

Ground terminal

AD22

PM0_SI

I

Serial audio data input from the A/D, D/A converter

AD23

LCD_PWM1

O

PWM signal output to the LED control

AD24

MICR_DET

I

Microphone detection signal input terminal Not used

AD25

GND3

-

Ground terminal

AD26

NC

-

Not used

AE1, AE2

NC

-

Not used

AE3

DD2VFBK

I

Power supply voltage feedback terminal

AE4

DD2VFBSW

O

Power supply output terminal (+1.8V)

AE5

DD2GNDA

-

Ground terminal

AE6

DD2INA

I

Power supply input terminal (+2.9 - 4.2V)

AE7

VDD_L0

I

Power supply input terminal (+1.2V)

AE8

VDD_L1

I

Power supply input terminal (+1.2V)

AE9

IO_C

-

Not used

AE10,

NC

-

Not used

AE11

 

 

 

AE12

DD1INA

I

Power supply input terminal (+2.9 - 4.2V)

AE13

IO_B

-

Not used

AE14

AVDD_LPLL

I

Power supply input terminal (+1.2V)

AE15

AVDD_HPLL

I

Power supply input terminal (+1.2V)

AE16

GND

-

Ground terminal

AE17

DD1VFBK

I

Power supply voltage feedback terminal

AE18

VDD_DSP

I

Power supply input terminal (+1.2V)

AE19

IO_A

-

Not used

AE20

VGP12IN

I

Power supply input terminal (+2.9 - 4.2V)

AE21

VGP3IN

I

Power supply input terminal (+2.9 - 4.2V)

AE22

VGP4

O

Reference voltage output terminal

AE23

VGP5

O

Power supply output terminal

AE24

VGP45IN

I

Power supply input terminal (+2.9 - 4.2V)

AE25,

NC

-

Not used

AE26

 

 

 

AF1 to AF3

NC

-

Not used

AF4

DD2VFB2

I

Power supply voltage feedback terminal

AF5, AF6

DD2INB1, DD2INB2

I

Power supply input terminal (+2.9 - 4.2V)

AF7 to AF9

DD2LX3, DD2LX1,

O

Power supply output terminal (+1.8V)

DD2LX2

 

 

 

AF10,

DD2GNDB1,

-

Ground terminal

AF11

DD2GNDB2

 

 

AF12,

DD1GNDB1,

-

Ground terminal

AF13

DD1GNDB2

 

 

AF14,

DD1LX1, DD1LX2

O

Power supply output terminal (+1.2V)

AF15

 

 

 

41

Image 41
Contents 889-048-01 NWZ-A826/A826K/A828/A828K/A829NWZ-A826/A826K/A828/A828K/A829 Diagrams DisassemblyFlexible Circuit Board Repairing Section Servicing NotesNWZ-A828K AEP, UKNWZ-A826K General SectionCover REAR, Rear Assy Section DisassemblyDisassembly Flow Main Board BatteryLCD Assy Operation of the Test Mode 4-1. Power Section Test ModePower supply voltage check Standby current check Battery voltage detection checkCharge current check AudioFrequency characteristic 2 check Frequency characteristic 1 checkOutput check 2. S/N checkCH separation R-ch check CH separation L-ch checkMaximum output check Normalizer checkVideo Sound pressure regulation level checkLCD display check Liquid crystal display is checked OtherSound pressure regulation setting Destination settingKey check Frequency check that presses keyClear stereo setting No cable Clear stereo setting With cableBASS-Gain/Fc setting TREBLE-Gain/Fc settingShutdown Bluetooth address setting Bluetooth address is setBluetooth connection check Section Diagrams Block Diagram PANEL, Power Supply Section For Schematic Diagrams For Printed Wiring BoardsSide a Side BSemiconductor Location Printed Wiring Board Main Board Side a Uses unleaded solderPrinted Wiring Board Main Board Side B Uses unleaded solder 123 Main Board 1/7 IC701 123 Main Board 3/7 Board See page 32 for IC Block DiagramsMain Board Main Board 6/7 Main Board 7/7 Uses unleaded solder SW Board Side a SW Board Side B123 SW Board 1/2 SW Board 2/2 IC301 XC6401FF58DR IC Block Diagrams Main BoardSW Board MAX8671CETL+TG069IC Pin Function Description IOB NandwezGND VccvbusNandale NANDRBZ0NANDDA2 VDDL1Usbsuspd LcdenableNANDRBZ1 Btxrst NANDCEZ0 Resetz LCDB0 LCDG4, LCDG5Sdrcasz VloginWakeup PsmlodetSDRA0 TustoSdrclk TM2AD5 Keywake AD4 XholdkeyAD6 AD7 SPI0CSZ2DD1VFBK2 DD1INB1, DD1INB2DD1GNDA VGP1Cover Rear Section Section Exploded ViewsRear Assy Section Main Board Section 106 1-756-702-11 BATTERY, Lithium ION StorageFront Section Main Section Electrical Parts ListMULTIPLE, Connector CONNECTOR, FFC/FPC ZIF 11PLED SMLA13BDTT86ST Bluetooth Ceramic Chip 5PFCOIL,COMMONMODECHOKE SMD1210 InductorTransistor Transistor EMX18SWITCH, Tactil Reset Short Chip SwitchSWITCH, Slide Hold Terminal TERMINAL, ContactBATTERY, Lithium ION Storage CONNECTOR, FFC/FPC ZIF 39PINBattery Assy US, CND, AEP, UK, FR, EE VaristorMANUAL, Instruction English AccessoriesNWZ-A828K AEP NWZ-A826K AEP/NWZ-A828K AEPMemo Ver Date Description of Revision Revision History