Sony NW-MS6 service manual Checking the Rated Voltage, Checking LOW Batt Voltage

Page 12

NW-MS6

3.Writing Destination (Checking Voltage and Consumed Electric Current)

After entering this mode, display of version and destination blinks. (The LCD back light turns off)

3-1. Checking voltage and consumed electric current

Note: Perform checking voltage and consumed electric current with the LCD back light off.

Specified value :

 

VDDCORE voltage

: 1.8 to 2.0 V (voltage between TP9002 (VDDCORE) and TP (GND))

VDDIO2 voltage

: 2.7 to 2.9 V (voltage between TP9003 (VDDIO2) and TP (GND))

Consumed electric current : below 200 mA

Connecting Location:

– MAIN BOARD (Conductor Side) –

TP (GND)

TP9002

(VDDCORE)

IC5000

IC8000

TP9003

(VDDIO2)

3-2. Writing destination

Note: When the displayed destination is correct, writing destination is no needed. But when the EEPROM check is performed, leave the display as it is and press the [DISPLAY] key to perform this check.

After replacing the EEPROM, make it sure to write destination.

Every time the [MEGA BASS] key is pressed, the display changes as t “JP t US t EU t X t JP t...”.

Select the destination*, and press the [DISPLAY] key to fix. Then the LCD display changes from blinking to being on. Also at the same time, checking destination written on the EEPROM is performed, and when the result is OK, the LCD back light turns on, and if not, starts

blinking.

 

 

 

*) JP

: Japanese model

EU

: AEP, UK, E, Hong Kong, Korean, Chinese models

US

: US model

X

: French model

4. Checking the Rated Voltage

Note: Before entering this mode, check that the input voltage is the specified value (1.23 V).

Press the [MENU] key after “3-2. Writing Destination” to enter this mode. The check is started automatically.

display

1.HLFBT >

When the result is OK, “1. HLFBT >OK” is displayed on the LCD. And if the result is NG, “1. HLFBT >NG” is displayed.

5. Checking LOW BATT Voltage

Note: Before entering this mode, adjust the input voltage to the LOW BATT voltage value (0.95 V).

Press the [MENU] key after “4. Checking the rated voltage” to enter this mode. The check is started automatically.

display

2.LOWBT >

When the result is OK, “2. LOWBT >OK” is displayed on the LCD. And if the result is NG, “2. LOWBT >NG” is displayed. Press the [MENU] key to go to the next USB self-check.

12

Image 12 Contents
Specifications NW-MS6Table of Contents DisassemblyDiagrams NW-MS6NW-MS6 Section Servicing Notes Looking at Controls NW-MS6 Section GeneralNW-MS6 Section Disassembly Disassembly FlowCase Block Assy Case Guide LED Chassis Main AssyConsole UNIT, SUB BOARD, Main Board Console AssyConsole Board NW-MS6 Section Test Mode Setting the Test ModeReleasing the Test Mode PreparationFlow Chart of Operations in the Test Mode Items to Check in the Test Mode 1. ROM/RAM Self-checkDisplay of Version and Destination Checking the Rated Voltage Checking LOW Batt VoltageUSB USB Self-checkMemo Section Diagrams Block Diagram Main SectionBlock Diagram DISPLAY/POWER Supply Section GIOE6Surface Waveforms Main board Printed Wiring Boards Main Section Uses unleaded solder LocationNW-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 Printed Wiring Board SUB Section Uses unleaded solder SUB Board Component Side SUB Board Conductor SideMBM29LV400BC-90PBT-SJDE1-4 SN74LV139APWR MPC18A41FCR2 IC9006 XC62HR1902MR IC PIN Function Description WAKE1 WAKE0RXD SDI1USB Xdet Vbus XONVbus INT USB XdreqFrwe FrreFrcle FraleMSEL1, MSEL0 CLKSEL2 EXTAL0VSS0 CLKSEL3VSS6 VSS7ADR5, ADR6 VDD3VDE7 TrstVSS13 ClkoutSection Exploded Views General Section17 18 Main Board Section Not suppliedSection NW-MS6 Electrical Parts List Main ResistorsNW-MS6 Main DiodeMain SUB VibratorSwitch NW-MS6 SUBMemo Revision History