DOWNLOAD Sony NW-E503 / NW-E505 / NW-E507 Service Manual ↓ Size: 1.53 MB | Pages: 32 in PDF or view online for FREE

9

2

 

connector

1

 

sheet (connector)

3

 

five claws

4

 

connector 

8

 spacer

     (VOL)

9

 sheet

 

     (shield)

6

 spacer

     (PWB)

0

 

MAIN board

5

 

organic EL indicator 

     module connector

10

2

 

Remove the SW board 

     in the direction of the arrow.

3

 SW board

1

 

two claws

6

 

organic EL indicator 

     module 

4

 

adhesive sheet (panel)

5

 two 

buttons (top), 

     chassis

11

Procedure 1: In HOLD state, while pushing  Nx  button, push

[REST].
When the test mode is set, the LCD display appears
as shown below.

Procedure 2: After starting up test mode, the following contents

can be checked.

•   Nx  button
   The KEY test mode is activated. All key inputs are completed,
     then  Nx    button is pressed, restart. (Be aware that the
    initialization is included on all key input.)
•  [MENU] button
    Change tuner (Fmax/Fmin).
•  [DISP] button
   Tuner off
•   + >  knob
    Change charge mode (100 mA/500 mA).
•   . –  knob
    Charge on/off.
•  [GROUP] on state
    LCD checked pattern.
•  [GROUP] off state
    “GROUP KEY OFF” appears.
•  [GROUP     ] knob
    All LCD lights on.
•  [GROUP     ] knob
    All LCD lights off.
•  [VOL +] button
    BEEP turns on.
•  [VOL --] button
    BEEP turns off.
•  [  REPEAT       SOUND] button
    Initialized. (Turns to the factory preset state, time, volume setting
   and so on.)
   The music data, files and so on in the memory are not changed.

•

256M   1.00.04   G10

<

,

12

Note on Schematic Diagram:
• All capacitors are in 

µ

F unless otherwise noted. (p: pF) 50 WV

or less are not indicated except for electrolytics and tantalums.

• All resistors are in 

Ω

 and 

1

/

4

 

W or less unless otherwise speci-

fied.

•

%

: indicates tolerance.

•

C

: panel designation.

•

: B+ Line.

• Voltages and waveforms are dc with respect to ground under

no-signal (detuned) conditions.
no mark : PLAY
      

*

 : Impossible to measure

• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal production toler-
ances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production toler-
ances.

• Circled numbers refer to waveforms.

• Signal path.

E

: PLAY BACK

a

: DIGITAL OUT

k

: DIGITAL IN

d

: TUNER

F

: AUDIO

Note on Printed Wiring Board
•  

X

: parts extracted from the component side.

•  

Y

: parts extracted from the conductor side.

•  

: Pattern from the side which enables seeing.

Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Side B)

the parts face are indicated.

•  MAIN board is multi-layer printed board.

However, the patterns of intermediate-layer have not been in-
cluded in the diagram.

*

Replacement of IC400 on MAIN board requires a special
tool.

•  Lead Layouts

surface

CSP (Chip Size Package)

Lead layout of conventional IC

•