Sony ICD-PX440 (serv.man2) Service Manual ▷ View online
ICD-PX440
4
3. Confi rmation and initialize method
Procedure:
1. Equip this unit with battery.
2. Slide the [HOLD•POWER ON/OFF] switch in the direction of
Procedure:
1. Equip this unit with battery.
2. Slide the [HOLD•POWER ON/OFF] switch in the direction of
“POWER” until the window display appears.
3. While pressing the [STOP/
x
] and [VOL
−] keys, slide the
[DPC (SPEED CTRL)] switch in the direction of “ON” or
“OFF” (Either “ON” or “OFF” is OK).
“OFF” (Either “ON” or “OFF” is OK).
VOL –
STOP / x
ON OFF DPC (SPEED CTRL)
4. While pressing the [STOP/
x
] and [VOL
−] keys, slide the
[DPC (SPEED CTRL)] switch in the direction opposite to that
specifi ed in step 3.
specifi ed in step 3.
5. While pressing the [STOP/
x
] and [VOL
−] keys, slide the
[DPC (SPEED CTRL)] switch in the direction opposite to that
specifi ed in step 4.
specifi ed in step 4.
6. The test mode menu (“SERVICE MENU”) is displayed, and
enter the test mode. Release the [STOP/
x
] and [VOL
−] keys.
(Displayed characters/values in the following fi gure are ex-
ample)
ample)
<SERVICE MENU>
ICD-PX440 /E
1.00.00
1.00.00
Destination
Model name
Firmware version
Model name
Firmware version
LCD Display
7. Press the [
>
] or [
.
] keys to select the “MENU INIT”, and
press the [
N
] key.
8. Initialization is performed.
Formatting...
<MENU INIT>
LCD Display
9. “Success” is displayed, and this unit reboots.
Success
LCD Display
ICD-PX440
5
SECTION 2
DISASSEMBLY
•
This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
SET
2-2. ORNAMENT
(MIC)
(Page
6)
2-3. CASE
(FRONT)
ASSY
(Page
7)
2-4
LOUDSPEAKER (2.8 cm)
(Page
8)
2-6. LCD
HOLDER
(Page
9)
2-7. MAIN
BOARD
(Page
9)
2-10. USB ASSY (USB1)
(Page
(Page
11)
2-8. ELECTRET CAP MICROPHONE
(L/R-ch) (MIC1, MIC2)
(Page
10)
2-9. CHASSIS
(Page
(Page
11)
2-5. LCD
BLOCK
(Page
8)
JIG
When disassembling the unit, use the following jig.
When disassembling the unit, use the following jig.
Part No.
Description
9-913-402-33 Tool for Disassembling
ICD-PX440
6
Note:
Follow the disassembly procedure in the numerical order given.
2-2. ORNAMENT
(MIC)
9
Insert a jig into the space opened between the case (front) and
the ornament (MIC) and remove the ornament (MIC) straight in
the direction of the arrow.
the direction of the arrow.
The case (rear) assy should
be visible through this slit.
be visible through this slit.
Only the mesh (MIC) should
be visible through this slit.
be visible through this slit.
The microphone electret cap
should be visible through this slit.
should be visible through this slit.
OK
NG
Note 5: When installing the ornament (MIC), confirm that the case (rear)
assy and mesh (MIC) are visible through the slits.
8 Create an open space between
the case (front) and the
ornament (MIC) by pushing the
case (rear) in the direction of
the arrow.
ornament (MIC) by pushing the
case (rear) in the direction of
the arrow.
7
six claws
7
two claws
qa
ornament
(MIC)
(MIC)
lid (slot)
speaker wires
USB connector
case (front)
case (rear)
– Rear top view –
– Rear top view –
–Right side –
–Left side –
– Rear bottom view –
2 screw
1 Open the battery case lid.
4 Close the battery case lid.
3 screw
(1.4)
(1.4)
5 Open the lid (slot).
Note
Note
1: Be careful when removing the lid (slot),
as forcefully pulling to remove it from the
case (rear) may damage the retainer claw.
case (rear) may damage the retainer claw.
6 With the lid (slot) held open, press your fingers
against the bases of the case (front) and the
USB connector, and open them slightly.
USB connector, and open them slightly.
Note
2:
When opening the case (front), exercise
great care. If opened with too much force,
the speaker wires may snap.
great care. If opened with too much force,
the speaker wires may snap.
Note
3: Using a jig instead of your fingers is also
acceptable.
case (rear)
Note 4: Check that the two claws on
the ornament (MIC) have come
out of the case (rear) block.
out of the case (rear) block.
Note 6: To see if the claws on the removed
ornament (MIC) have broken or
otherwise been damaged, check that
the claws do not turn white when
pressure is applied.
otherwise been damaged, check that
the claws do not turn white when
pressure is applied.
Not broken
Not white
0
claw
0
claw
0
two claws
ornament (MIC)
case
(front)
(front)
ornament (MIC)
case
(front)
(front)
ICD-PX440
7
2-3. CASE (FRONT) ASSY
5
three claws
2 Remove the solder.
[black]
[black]
2 Remove the solder.
[red]
[red]
3 case (front) assy
1 Remove two speaker
wires from the claw.
4 Attach the case (front) assy
starting with the right side.
7
Attach the case (front)
assy to the left side.
assy to the left side.
3 Open the lid (slot).
2 Hook two wires to
the claw.
1 Solder the wire.
[black]
[black]
1 Solder the wire.
[red]
[red]
6 Align the position of S401 and
knob (power).
S401
S941
– Front top view –
– Front top view –
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8
three claws
knob
(power)
(power)
S401
Note: Be careful not to damage the switches
when attaching the case (front) assy.
6 Align the position of S941 and
knob (power).
knob
(power)
(power)
S941
speaker wires
MAIN board
[red]
[black]
claw
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