Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player Service Manual

Text of Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player User Guide:

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 NWZ-A726/A726B/A728/A728B/A729 2727 5-10. SCHEMATIC DIAGRAM - MAIN Board (6/6) - • See page 31 for IC Block Diagrams. IC B/D 4 MAIN (1/6) BOARD BOARD 2 MAIN (5/6) BOARD MAIN (4/6) 1 BOARD (1/6) MAIN 3 BOARD (5/6) MAIN 5 BOARD 9 MAIN (4/6) 0 0 3.7 3.3 3.7 0 0 0 0 3.7 2 3.7 2.9 2 2.9 1.8 2 0 3.3 3.7 0 2.7 2.7 3.7 3.7 0 0 3.7 2.9 0 TOTAL CURRENT PLAY: 150mA JL907 CN901 1BATT + 2BATT - VCC_DCIN VCC_VBUS 4.7uHL902 4.7uH L901 3300 R923 SSM3K15FV(TL3SONYZ) Q901 S TH901 150k R922 0.1 C922 220k R908 VDD_

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 8 3-5. LCD ASSY  two screws (M1.4)  two spacers (WM-P)  two claws  two claws  SW board  LCD flexible board (CN801)  sheet (LCD-B)  two screws (B1.4)  screw (B1.4) RE LCD assy R Open the LCD assy in the direction of the arrow. waterproof jack  Remove the waterproof jack in the direction of the arrow. RB boss RT Pull out the LCD flexible board. LCD flexible board LCD assy

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 34 MAIN BOARD IC601 MC-10051BF1-FAE-A (SYSTEM CONTROLLER, POWER CONTROL) Pin No. Pin Name I/O Description A1 to A3 NC - Not used A4 NAND_WEZ O Write enable signal output to the NAND fl ash memory A5 IO_B - Not used A6 to A10 NC - Not used A11 to A13 GND - Ground terminal A14 to A16 NC - Not used A17 VCCVBUS I Power supply input terminal (+5V) A18 NC - Not used A19 IO_A - Not used A20 VDD_L0 I Power supply input terminal (+1.2V) A21 AB0_A8 O Address signal output to the USB controller A22 to A26 NC - Not used B1, B2 NC - Not used B3 NAND_CEZ2 O Chip enable signal output to the NAND fl ash memory (NWZ-A729 only) B4 NAND_DA0 I/O Two-way data bus with the NAND

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 38 Pin No. Pin Name I/O Description U1 to U5 SDR_A12 to SDR_A8 O Address signal output to the SD-RAM U8 SDR_CASZ O Column address strobe signal output to the SD-RAM U9 GND - Ground terminal U10 to U12 NC - Not used U13 WAKEUP O Wake up signal output terminal U14 PSM_LODET O USB power control signal output terminal U15 L1_DET - Not used U16 ERR_RST_REQZ - Not used U17 NC - Not used U18 REFCLKO O Master clock signal output to the A/D, D/A converter U19 NC_OUT_SEL O Line output selection signal output terminal Not used U22 C_TDO O Data o

• NWZ-A726/A726B/A728/A728B/A729 36 Pin No. Pin Name I/O Description G23 to G25 AB0_D15 to AB0_D13 I/O Two-way data bus with the USB controller G26 NC - Not used H1 USBSUSPD - Not used H2 NC - Not used H3 to H5 SDR_DATA25, SDR_DATA27, SDR_DATA31 I/O Two-way data bus with the SD-RAM H8 NAND_RBZ1 O Read/busy signal output to the NAND fl ash memory (NWZ-A728/A728B/A72

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, 15 NWZ-A726/A726B/A728/A728B/A729 4-4-8. NAND capacity check Capacity of NAND fl ash memory, present bud block, maximum bud block, and vender ID are displayed. Checking method: 1. Enter the test mode. 2. Press the [ v ]/[ V ] key to select the “OTHER”, and press the [ B ] key to enter the minor item. 3. Press the [ v ]/[ V ] key to select the “NCAPCHK”. 4. Press the [ u ] key, capacity of NAND fl ash memory, present bud block, maximum bud block, and vender ID are displayed. liquid crystal display OTHER NCAPCHK XGB BAD B

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 2 Maximum recordable number of songs and time (Approx.) The approximate times are based on the case in which you transfer or record only 4 minutes songs (not including videos and photos) in the MP3 format. Other playable audio file format song numbers and times may differ from MP3 format. NWZ-A726 NWZ-A728 Bit rate Songs Time Songs Time 48 kbps 2,450 163 hr. 20 min. 5,050 336 hr. 40 min. 64 kbps 1,850 123 hr. 20 min. 3,750 250 hr. 00 min. 128 kbps 925 61 hr. 40 min. 1,850 123 hr. 20 min. 256 kbps 460 30 hr. 40 min. 945 63 hr. 00 min. 320 kbps 370 24 hr. 40 min. 755 50 hr. 20 min. NWZ-A729 B

• 13 NWZ-A726/A726B/A728/A728B/A729 4-2-9. Sound pressure regulation level check “1 kHz 0 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 “SPCHK”. 4. Press the [ u ] key, “1 kHz 0 dBs

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 NWZ-A726/A726B/A728/A728B/A729 2424 5-7. SCHEMATIC DIAGRAM - MAIN Board (3/6) - 6 MAIN (1/6) BOARD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 100kR767 100kR765 100kR756 100kR755 NAND_D01 NAND_D02 NAND_D03 NAND_D04 NAND_D05 NAND_D06 NAND_D07 NAND_D00 VDD_GP3 NAND_XCS2 NAND_XCS3 NAND_XRD NAND_CLE NAND_ALE NAND_XWR DGND 0.1 C752 0.1 C753 0.1 C754 0.1 C755 470kR764

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 31 • IC Block Diagrams – MAIN Board – IC301 XC6401FF58DR CONTROL ON / OFF CONTROL ON / OFF REGULATOR 2 REGULATOR 1 REFERENCE VOLTAGE 1 EN2 2 VIN 3 EN1 6 VOUT2 5 VOUT1 4 VSS 7 GND CON26 VCC 8 NO2 4 NC2 7 CB1 1 GND 3 COM1 10 NC1 9 NO1 2 CB2 5 IC305 MAX4745ELB+TG069 B8 CHANNEL OSCILLATOR USB NC CPU INTERFACE CONTROLLER MULTI TRANSCELVER FIRST-IN FIRST-OUT C8 F3 H2 E3 G4 F4 E1 C5 E2 D3 G1 F1 F2 H4 A1 C6 E8 D6 F8 E7 F7 G8 XWRH CD0 CA8 CA7 CA6 CA5 CA4 CA3 CA2 XDACK XDREQ XINT XCS CD15 CD14 CD13 CD12 CD11 CD10 CD9 XI XO G3 XRD TEST MUX H1 TESTEN H8 ATPGEN A8 BURNIN MACRO DEVICE SERIAL INTERFACE ENGINE HOST SERIAL INTERFACE ENGINE A6 R1 A3 DP

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, SERVICE MANUAL Sony Corporation Audio Business Group Published by Sony Techno Create Corporation SPECIFICATIONS DIGITAL MEDIA PLAYER 9-889-029-01 2008B05-1 © 2008.02 US Model NWZ-A726/A726B/A728/A728B/A729 Canadian Model NWZ-A726/A728 E Model Australian Model Tourist Model East European Model NWZ-A726/A728/A729 Ver. 1.0 2008.02 NWZ-A726/A726B/A728/ A728B/A729 Photo: NWZ-A728  ATRAC is trademark of Sony Corporation.  “WALKMAN” and “WALKMAN” logo are registered trademarks of Sony Corporation.  and are trademarks of Sony Corporation.  Microsoft, Windows, Windows

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, 11 NWZ-A726/A726B/A728/A728B/A729 4-2-1. Output check “1 kHz 0 dBs L-ch/R-ch VOLUME: 25” 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 “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 “Infi nity Z

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 40 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 AD13 NC - Not used 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 A

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 NWZ-A726/A726B/A728/A728B/A729 2222 5-5. SCHEMATIC DIAGRAM - MAIN Board (1/6) - • See page 31 for IC Block Diagrams. • See page 33 for IC Pin Function Description. IC B/D MAIN BOARD (2/6) 7 6 (3/6) MAIN BOARD (6/6) 3 BOARD MAIN (6/6) BOARD 4 MAIN 8 (4/6) MAIN BOARD 10 (5/6) MAIN BOARD SW BOARD (1/2) CN881 A SDR_D14 SDR_D27 SDR_D29 SDR_D09 SDR_D24 SDR_D23 SDR_D20 SDR_D22 SDR_D00 SDR_D21 SDR_D28 SDR_D06 SDR_D18 SDR_D16 SDR_D01 SDR_D04 SDR_D03 SDR_D31 SDR_D25 SDR_D05 SDR_D07 SDR_D26 SDR_D10 SDR_D19 SDR_D11 SDR_D30 SDR_D13 SDR_D02 SDR_D17 SDR_D08 SDR_D12 SDR

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 41 Pin No. Pin Name I/O Description AF16, AF17 DD1INB1, DD1INB2 I Power supply input terminal (+2.9 - 4.2V) AF18 DD1VFBK2 I Power supply voltage feedback terminal AF19 DD1GNDA - Ground terminal AF20 VGP1 O Power supply output terminal (+2.85V) AF21 COM - Not used AF22 NC - Not used AF23 VGP3 O Power supply output terminal (+2.85V) AF24 to AF26 NC - Not used

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, 43 NWZ-A726/A726B/A728/A728B/A729 51 X-2190-922-1 REAR ASSY (BLACK) (NWZ-A726: US) 51 X-2190-923-1 REAR ASSY (PINK) (NWZ-A726: US) 51 X-2190-924-1 REAR ASSY (BLACK) (NWZ-A726: US (CircuitCity)) 51 X-2190-925-1 REAR ASSY (PINK) (NWZ-A726: US (CircuitCity)) 51 X-2190-926-1 REAR ASSY (BLACK) (NWZ-A726: CND) 51 X-2190-927-1 REAR ASSY (SILVER) (NWZ-A726: CND) 51 X-2190-928-1 REAR ASSY (PINK) (NWZ-A726: CND) 51 X-2190-929-1 REAR ASSY (BLACK) (NWZ-A726: E, AUS, JE) 51 X-2190-930-1 REAR ASSY (WHITE)

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, 44 NWZ-A726/A726B/A728/A728B/A729 101 3-242-558-01 SPACER (LINE IN) 102 3-279-346-01 ESCUTCHEON (CN) (for BLACK, GOLD) 102 3-279-346-11 ESCUTCHEON (CN) (for WHITE, PINK, SILVER) 103 X-2190-622-1 MAIN BOARD, COMPLETE (for SERVICE) (4G) (NWZ-A726: US, CND) 103 X-2190-623-1 MAIN BOARD, COMPLETE (for SERVICE) (8G) (NWZ-A728: US, CND) 103 X-2190-624-1 MAIN BOARD, COMPLETE (for SERVICE) (16G) (NWZ-A729: US) 103 X-2190-625-1 MAIN BOARD, COMPLETE (for SERVICE) (4G) (NWZ-A726: EE) 103 X-2190-626-1 MAIN BOARD, COMPLETE (for SERVICE) (8G) (NWZ-A728: EE) 103 X-2190-627-1 MAIN BOARD, COMPLETE (for SERVICE) (16G) (NWZ-A729: EE) 103 X-2190-628-1 MAIN

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 32 35 SYS REF 1USUS 2DC Li+/Li-PoLY BATTERY CHARGER & SYSTEM LOAD SWITCH SMART POWER SELECTOR SMART POWER SELECTOR & CHARGER BIAS 36 PEN1 37 CST2 38 /UOK 39 CST1 40 PEN2 41 EP 31 CISET 32 CT 33 THM 12 /DOK 17 BVSET 13 REG3L 19 FB1 18 GND 30 DISET 29 FB3 28 VL 27 PV3 26 LX3 25 PG3 24 PG1 23 LX1 22 PV1 21 SSKP 4FB5 5PV5 6OUT5 7PG2 8LX2 9PV2 20 EN 16 PV4 15 OUT4 14 BP 11 FB2 3USB 34 BAT 10/CEN 3.3V LOW DROPOUT HIGHEST VOLTAGE SELECTOR REG1 DC-DC CONVERTER REG3 DC-DC CONVERTER REG4 LOW DROPOUT REG5 LOW DROPOUT REG2 DC-DC CONVERTER 14 GND 15 EN1 16 EN2 13 VIN 11 C1 − 12

• NWZ-A726/A726B/A728/A728B/A729 3 Notes on chip component replacement • Never reuse a disconnected chip component. • Notice that the minus side of a tantalum capacitor may be dam- aged by heat. Flexible Circuit Board Repairing • Keep the temperature of soldering iron around 270 °C during repairing. • Do not touch the soldering iron on the same conductor

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, 42 NWZ-A726/A726B/A728/A728B/A729 SECTION 6 EXPLODED VIEWS 1 3-279-345-01 LID (ACC) (for BLACK) 1 3-279-345-11 LID (ACC) (for SILVER, WHITE) 1 3-279-345-21 LID (ACC) (for PINK) 1 3-279-345-31 LID (ACC) (for GOLD) 2 3-279-357-41 COVER (REAR) (for BLACK) 2 3-279-357-51 COVER (REAR) (for SILVER, WHITE) 2 3-279-357-61 COVER (REAR) (for PINK) 2 3-279-357-71 COVER (REAR) (for GOLD) 3 3-234-449-25 SCREW (M1.4) (for BLACK, GOLD) 3 3-234-449-27 SCREW (M1.4) (for WHITE, PINK, SILVER) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Note: • -XX and -X mean

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 39 Pin No. Pin Name I/O Description AA3 TU_STO I Status signal input terminal Not used AA4 SDR_A0 O Address signal output to the SD-RAM AA5 SDR_CLK O Clock signal output to the SD-RAM AA22, AA23 GND - Ground terminal AA24 TM2 - Not used AA25 VANAIN I Power supply input terminal (+2.9 - 4.2V) AA26 VANA O Power supply output terminal (+2.85V) AB1 VDD_L0 I Power supply input terminal (+1.2V) AB2 TXD_PUCTL I Serial data input terminal AB3 CRD_DET I Wake up signal input from the WM-PORT connector AB4 CHG_XFL

• Sony NWZ-A726 - 4 Gb Walkman Video Mp3 Player, NWZ-A726/A726B/A728/A728B/A729 6 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW Note: Follow the disassembly procedure in the numerical order given. 3-2. COVER (REAR), REAR ASSY SET 3-2. COVER (REAR), REAR ASSY (Page 6) 3-3. BATTERY (Page 7) 3-4. MAIN BOARD (Page 7) 3-5. LCD ASSY (Page 8)  two screws (M1.4)  two ornamental screws  screw (M1.4)  two claws  rear assy  two claws  lid (ACC)  claw  claw   cover (rear)

• 14 NWZ-A726/A726B/A728/A728B/A729 4-4-2. Key check The operation of the key is confi rmed. Checking method: 1. Enter the test mode. 2. Press the [ v ]/[ V ] key to select the “OTHER”, and press the [ B ] key to enter the minor item. 3. Press the [ v ]/[ V ] key to select the “KEY”. 4. Press the [ u ] key, all keys are displayed. liquid crystal d

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