Sony ICD-U50 / ICD-U60 / ICD-U70 Service Manual ▷ View online
SERVICE MANUAL
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
Published by Sony Techno Create Corporation
US Model
ICD-U50/U60/U70
Canadian Model
ICD-U70
AEP Model
ICD-U60/U70
UK Model
ICD-U60/U70
E Model
Chinese Model
ICD-U50/U60/U70
Tourist Model
ICD-U60
IC RECORDER
9-887-170-06
2007C16-1
© 2007.03
© 2007.03
Ver. 1.5 2007.03
SPECIFICATIONS
ICD-U50/U60/U70
Photo : ICD-U70 (NAVY)
Recording media
Built-in fl ash memory 256 MB (ICD-U50)
512 MB (ICD-U60), 1GB (ICD-U70), Monaural
recording
512 MB (ICD-U60), 1GB (ICD-U70), Monaural
recording
Recording time
ICD-U50 HQ:
28
hours
40
minutes
SP: 76 hours 30 minutes
LP: 125 hours 15 minutes
ICD-U60 HQ:
57
hours
30
minutes
SP: 153 hours 25 minutes
LP: 251 hours 5 minutes
ICD-U70 HQ:
115
hours
10
minutes
SP: 307 hours 15 minutes
LP: 502 hours 45 minutes
Frequency range
HQ: 160
-
6,800
Hz
SP: 100
-
3,400
Hz
LP: 100
-
3,400
Hz
MP3: 20 - 20,000 HZ
Bit rates for MP3 fi les (kbps)
MPEG Ver. 1 Layer 3:
32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192,
224, 256, 320
MPEG Ver. 2 Layer 3/MPEG Ver. 2.5 Layer 3:
8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128,
144, 160
Sampling frequencies for MP3 fi les (kHz)
MPEG Ver. 1 Layer 3:
32.0, 44.1, 48.0
MPEG Ver. 2 Layer 3:
16.0, 22.05, 24.0
MPEG Ver. 2.5 Layer 3:
8.0, 11.025, 12.0
Speaker
approx. 10 mm (
13
/
32
in.) dia.
Power output
35 mW (when using a built-in speaker)
Output
Headphone jack (stereo minijack) for 8 - 300
ohms headphone(s)/ear receiver
ohms headphone(s)/ear receiver
Input/Output
USB connector
Power requirements
One LR03 (size AAA) alkaline battery: 1.5 V DC
Dimensions (w/h/d)
(not incl. projecting parts and controls)
30.0
30.0
× 99.7 × 20.0 mm (1
3
/
16
× 4 ×
13
/
16
in.)
Mass (incl. battery)
64 g (2.3 oz)
Supplied accessories
MPEG Layer-3 audio coding technology and patents
licensed from Fraunhofer IIS and Thomson.
licensed from Fraunhofer IIS and Thomson.
Design and specifi cations are subject to change without
notice.
notice.
Stereo headphone (1)
Operating instructions (1)
LR03 (size AAA) alkaline battery (1)
Neck strap (1)
CD-ROM (1)
CD-ROM (1)
2
ICD-U50/U60/U70
TABLE OF CONTENTS
1.
GENERAL
...................................................................
3
2.
DISASSEMBLY
2-1.
Disassembly Flow ...........................................................
4
2-2.
Cap Assy, Front Assy .......................................................
4
2-3.
MAIN Board, Knob (JOG) ..............................................
5
2-4.
Speaker (1.0cm) (Sp901), Battery Lid,
Cabinet (Rear) Assy .........................................................
Cabinet (Rear) Assy .........................................................
6
2-5.
USB Board, USB Connector ...........................................
7
2-6.
JACK Board, Electret Condenser Microphone
(MIC901) .........................................................................
(MIC901) .........................................................................
8
2-7.
Button (RS), Knob (HOLD), Knob (DPC) ......................
9
3.
TEST MODE
............................................................... 10
4.
DIAGRAMS
4-1.
Block Diagram ................................................................ 13
4-2.
Printed Wiring Board – JACK Board – .......................... 14
4-3.
Schematic Diagram – JACK Board – ............................. 15
4-4.
Printed Wiring Boards – MAIN Board, USB Board – ... 16
4-5.
Schematic Diagram – MAIN Board, USB Board – ....... 17
5.
EXPLODED VIEWS
5-1.
Overall Assy .................................................................... 21
5-2.
Main Section .................................................................... 22
6.
ELECTRICAL PARTS LIST
.................................. 23
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 °C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350
°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder. Operating instructiondd
also be added to ordinary solder. Operating instructiondd
3
ICD-U50/U60/U70
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
Index to Parts and Controls
x
Main Unit
i
(headphone) jack*
1
A-B
(repeat) button
Control key*
2
/MENU button
Front
REC (record)/
PAUSE button
PAUSE button
STOP button
Display window
USB cap
Built-in
microphone
microphone
Rear
Neck strap holder*
3
OPR (operation) indicator
HOLD switch*
4
Battery compartment
DPC switch
Speaker
This unit does not have a power on/off switch.
*
1
Connect stereo headphone(s) or stereo ear receiver
to the
i
(headphone) jack. If noise is heard, wipe
the headphone/ear receiver plug.
*
2
How to use the control key
Use the key to change the menu settings as well as
for playback. In the menu mode press the key right or
left to select a menu item and press the key (
for playback. In the menu mode press the key right or
left to select a menu item and press the key (
NX
)
to confi rm the setting.
*
3
How to attach the neck strap
*
4
Slide the HOLD switch in the direction of the arrow,
and all the functions of all the buttons are locked.
When the HOLD function is activated during stop, the
display will be turned off, too.
When the HOLD function is activated during stop, the
display will be turned off, too.
x
Display Window
Folder indicator (A, B, C, D, E, )/Message number/REC (recording) indicator/Recording time indication/
Remaining memory indicator/Total number of messages in a folder/Menu indication/Counter/Remaining time
indication/Recording date indication/Current time indication
Remaining memory indicator/Total number of messages in a folder/Menu indication/Counter/Remaining time
indication/Recording date indication/Current time indication
Repeat play indicator
Playback mode indicator
Recording mode
indicator
indicator
VOR indicator
Microphone sensitivity indicator
Remaining battery indicator
When recording or playback stops, the display changes from counter to current time, and then disappears
in 30 seconds.
in 30 seconds.
x
Setting the Clock
You must set the clock to record the date and time.
1
Press and hold
/MENU for more than
1 second.
The unit enters the menu mode.
2
Press the control key toward
>
to
display “DATE & TIME>” and press
NX
.
The clock setting display appears.
3
Press the control key toward
>
to
select the digits of the year and press
NX
.
4
Set the month, day, hour and minute in
sequence, then press
NX
.
When the minute digits are selected, the clock
will be set and the display will return to “DATE
& TIME>.”
will be set and the display will return to “DATE
& TIME>.”
5
Press STOP to exit from the menu
mode.
4
ICD-U50/U60/U70
Note:
Follow the disassembly procedure in the numerical order given.
2-2. CAP ASSY, FRONT ASSY
SECTION 2
DISASSEMBLY
2-1. DISASSEMBLY FLOW
Note:
Disassemble the unit in the order as shown below.
2-3. MAIN BOARD, KNOB(JOG)
(Page 5)
2-7. BUTTON (RS), KNOB (HOLD),
KNOB (DPC)
(Page 9)
2-5. USB BOARD, USB CONNECTOR
(Page 7)
2-4. SPEAKER (1.0cm) (SP901)
BATTERY LID,
CABINET (REAR) ASSY
(Page 6)
2-6. JACK BOARD,
ELECTRET CONDENSER
MICROPHONE(MIC901)
(Page 8)
2-2. CAP ASSY, FRONT ASSY
(Page 4)
SET
5
two claws
6
Remove the front assy in the
direction of the arrow.
3
tapping screw
(M1.4
×
6)
2
Open the battery lid.
1
cap assy
4
four claws
