Sony NW-MS6 service manual Usb, USB Self-check

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NW-MS6

6. USB Self-check

The indication is displayed as below after entering this mode.

display

3.USB >

This mode is not used in servicing.

Press the [MENU] key to go to the next RTC self-check.

7. RTC Self-check

The indication is displayed as below after entering this mode.

display

4.RTC >

The check on writing/reading real time clock is performed automatically and when the result is OK, “4. RTC >OK” is displayed on the LCD and LCD back light turns on. If the result is NG, “4. RTC >NG” is displayed and the LCD back light blinks.

Press the [MENU] key to go back to “2. Display of Version and Destination”.

8. Sleep Mode (Checking Consumed Electric Current)

When the [VOLUME--]key is pressed at “2. Display of Version and Destination”, the unit goes into sleep mode.

Once entering this mode, the LCD turns off and the unit goes into the sleep (standby) status. After being into the sleep status, check that consumed electric current is within the specified value.

Specified value : below 1 mA

The unit is waked up with normal mode with pressing any key. If the short lands (SL0120)) has been short, however, waked up and enters this test mode again.

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Contents NW-MS6 SpecificationsDisassembly Table of ContentsDiagrams NW-MS6NW-MS6 Section Servicing Notes NW-MS6 Section General Looking at ControlsDisassembly Flow NW-MS6 Section DisassemblyCase Block Assy Case Chassis Main Assy Guide LEDConsole Assy Console UNIT, SUB BOARD, Main BoardConsole Board Setting the Test Mode NW-MS6 Section Test ModeReleasing the Test Mode PreparationItems to Check in the Test Mode 1. ROM/RAM Self-check Flow Chart of Operations in the Test ModeDisplay of Version and Destination Checking LOW Batt Voltage Checking the Rated VoltageUSB Self-check USBMemo Block Diagram Main Section Section DiagramsGIOE6 Block Diagram DISPLAY/POWER Supply SectionSurface Waveforms Main board Location Printed Wiring Boards Main Section Uses unleaded solderNW-MS6 Schematic Diagram Main /4 See page 27 for IC Block Diagrams NW-MS6 R9032 22k C9036 33k C9037 3300p R9033 Schematic Diagram SUB /2 NW-MS6 SUB Board Component Side SUB Board Conductor Side Printed Wiring Board SUB Section Uses unleaded solderMBM29LV400BC-90PBT-SJDE1-4 SN74LV139APWR MPC18A41FCR2 IC9006 XC62HR1902MR IC PIN Function Description WAKE0 WAKE1RXD SDI1Vbus XON USB XdetVbus INT USB XdreqFrre FrweFrcle FraleMSEL1, MSEL0 EXTAL0 CLKSEL2VSS0 CLKSEL3VSS7 VSS6ADR5, ADR6 VDD3Trst VDE7VSS13 ClkoutGeneral Section Section Exploded Views17 18 Not supplied Main Board SectionResistors Section NW-MS6 Electrical Parts List MainDiode NW-MS6 MainVibrator Main SUBNW-MS6 SUB SwitchMemo Revision History