Sony NW-E99 Service Manual ▷ View online
5
NW-E99
SECTION 2
TEST MODE
STANDING PROCEDURE
Procedure 1: Set a dry battery into NW-E99, and keep the battery
lid open.
Procedure 2: In HOLD state, while pushing Nx and [GROUP]
button, turn power on by closing the battery lid of
NW-E99.
NW-E99.
Procedure 3: Set HOLD state off.
After starting up test mode, the following contents can be checked.
TEST MODE
• 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
EL0 (blue) lights on/off.
• [GROUP] button
EL1 (green) lights on/off.
• -/>
All LCD lights and ACCESS LED lights off.
• ./+
All LCD lights and ACCESS LED lights on.
• [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.
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
EL0 (blue) lights on/off.
• [GROUP] button
EL1 (green) lights on/off.
• -/>
All LCD lights and ACCESS LED lights off.
• ./+
All LCD lights and ACCESS LED lights on.
• [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.
•
6
NW-E99
SECTION 3
DISASSEMBLY
Note:
Follow the disassembly procedure in the numerical order given.
Note:
Disassemble the unit in the order as shown below.
3-1. CASE, CHASSIS (FRONT) ASSY
SET
3-1. CASE,CHASSIS (FRONT) ASSY
(Page 6)
3-2. DISPLAY BOARD ASSY
(Page 7)
3-3. MAIN BOARD ASSY
(Page 7)
1
case
3
chassis (front)
4
three button (cup)
5
window (led)
2
three claws
7
NW-E99
3-2. DISPLAY BOARD ASSY
3-3. MAIN BOARD ASSY
4
DISPLAY board assy
2
tapping screw (1.7)
3
cover section
1
lid (usb) (sub assy)
4
MAIN board assy
3
chassis (rear)
ornament assy
2
two claws
1
tapping screw (B1.7
×
7)
8
NW-E99
SECTION 4
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• 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 specified.
•
%
: indicates tolerance.
•
C
: panel designation.
•
: B+ Line.
• Power voltage is dc 1.5 V and fed with regulated dc power supply
from battery terminal.
• Voltages and waveforms are dc with respect to ground under no-
signal (detuned) conditions.
no mark : PLAY
no mark : PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production toler-
ances.
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
ances.
• Circled numbers refer to waveforms.
• Signal path.
F
: PLAY
a
: DIGITAL OUT
k
: DIGITAL IN
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.
•
: Through hole.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A)
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.
•
Waveform
1
IC700
8
(OSCOUT)
0.5 V/div, 10
µ
sec/div
1.1 Vp-p
31.25
µ
sec
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