Sony ICDST-10, ICDST-20 Service manual

ICD-ST10/ST20

SERVICE MANUAL

Ver 1.2 2003. 07

Photo : ICD-ST10

SPECIFICATIONS

Recording media Built-in flash memory 32MB (ICD-ST20)/16MB

Recording time • ICD-ST20: 85 minutes (ST), 261 minutes (SP), 696

Speaker Approx. 28 mm (1 Power output 350 mW Input/Output • Microphone jack (minijack, stereo)

Playback speed control +100% to -50% (DPC) Power requirements Two LR03 (size AAA) alkaline batteries: 3 V DC Dimensions (w/h/d)

Mass (incl. batteries) 75 g (2.65 oz) Supplied accessories Stereo Ear Receiver × 1

Design and specifications are subject to change without notice.

(ICD-ST10), Stereo/Monaural recording

minutes (LP)

• ICD-ST10: 41 minutes (ST), 125 minutes (SP), 334 minutes (LP)

– input for plug in power, minimum input level

0.6 mV, 3 kilohms or lower impedance microphone

• Headphones jack (minijack, stereo) –

output

• USB connector

(not incl. projecting parts and controls)

41.5 × 103.6 × 13.3 mm (1 11/16 × 4 1/8 × 17/

USB Connecting cable × 1 Application Software (CD-ROM) × 1 Carring Case x 1 LR03 (size AAA) alkaline batteries × 1*

*For the United States model only

for 8 - 300 ohms ear receiver

/8 in.) dia.

US Model

ICD-ST10

Canadian Model

ICD-ST10

AEP Model

ICD-ST10

UK Model

ICD-ST10

Tourist Model

ICD-ST10/ST20

Korean Model

ICD-ST20

in.)

9-877-313-03

IC RECORDER

Sony Corporation

Personal Audio Company Published by Sony Engineering Corporation

ICD-ST10/ST20

TABLE OF CONTENTS

1. GENERAL ·········································································· 3

2. DISASSEMBLY

2-1. Upper Lid Block Assembly ·········································· 4 2-2. F-SW Board ·································································· 5 2-3. MAIN Board ································································· 5 2-4. S-SW Board, Microphone Block Assembly ················· 6 2-5. Microphone Unit··························································· 6 2-6. The Cautions at the Time of a Microphone Block

Assembly ······································································ 7

3. TEST MODE······································································ 8

4. DIAGRAMS······································································ 11

4-1. Block Diagrams

– Main Section-1 –······················································12 – Main Section-2 –······················································13

– Panel/Power Section – ············································· 14 4-2. Printed Wiring Board – MAIN Board (Side A) – ······· 15 4-3. Printed Wiring Board – MAIN Board (Side B) –······· 16 4-4. Printed Wiring Board – F-SW Board – ······················· 17 4-5. Printed Wiring Board – S-SW Board – ······················· 18 4-6. Schematic Diagram – MAIN Board (1/5) – ··············· 19 4-7. Schematic Diagram – MAIN Board (2/5) – ··············· 20 4-8. Schematic Diagram – MAIN Board (3/5) – ··············· 21 4-9. Schematic Diagram – MAIN Board (4/5) – ··············· 22 4-10. Schematic Diagram – MAIN Board (5/5) – ··············· 23 4-11. IC Block Diagrams ····················································· 24 4-12. IC Pin Function Descriptions······································ 27

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.

✩Replacement of IC6001 used in this set requires a special tool.

• The voltage and waveform of CSP (chip size package) cannot be measured, because its lead layout is diff erent from that of con v entional IC.

• Lead layouts

surface

Lead layout of

conventional IC

CSP (chip size package)

5. EXPLODED VIEWS

5-1. Upper Lid Block ························································· 32 5-2. Case Block ·································································· 33

6. ELECTRICAL PARTS LIST ······································· 34

Unleaded solder

Boards requiring use of unleaded solder are printed with the leadfree 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°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 viscous (sticky, less prone to flow) 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.

Index to Parts and Controls

2 Press the jog lever (x•B).

The month digits will flash.

3 Set the month and day in

sequence, then press the jog lever (x•B). The hour digits will flash.

Set the time.

1 Press the jog lever up or down

(>/.)toselect the digits of the hour.

2 Press the jog lever (x•B).

The minute digits will flash.

3 Set the minute. 4 Press the jog lever (x•B).

The menu mode will be

displayed again.

Note

If you do not press the jog lever (x•B) for more than one minute, the clock setting mode is cancelled and the window will return to normal display.

Turnthe jog lever toward MENU.

The window will return to normal display.

1 If the unit is left unused for more than 3

seconds in the stop mode after the clock is set, the display will show the current time.

Refer to the pages indicated in parentheses for details.

Front

1 2 3 4 5 6 7 8 9 0

SECTION 1

GENERAL

Rear

ICD-ST10/ST20

This section is extracted from instruction manual.

1 Built-in microphone 2 Built-in microphone 3 OPE (operation) indicator 4 DIRECTNL (directional) switch 5 ERASE button 6 A-B 7 DIVIDE/ 8 Display window 9 DPC ON/OFF switch 0

(repeat)/PRIORITY button

(bookmark) button

Speaker

Step 2: Setting the Clock

You need to set the clock to use the alarm function or record the date and time. Clock setting display appears when you insert batteries for the first time, or when you insert batteries after the unit has been without batteries for a certain period of time. In this case, proceed from step 4.

Turn the jog lever toward MENU.

The menu mode will be displayed in the display window.

Press the jog lever up or down (>/.

Press the jog lever (x•B).

The date and time setting window is displayed. The year digits will flash.

Set the date.

1 Press the jog lever up or down

) to select “SET DATE”.

(

>/.

the year.

Jog lever

Press up (>).

Press down (.).

) to select the digits of

K zREC (record) /REC

PAUSE button

L xSTOP button M Jog lever

FOLDER/MENU/

.(review/fast backward)/ > (cue/fast forward)/ x• B (play/stop•enter)

N VOL (volume) +/– buttons O USB connector

Turn toward MENU.

Press the center (x•B).

P m (microphone) jack Q i (headphones) jack R HOLD switch S DC IN 3V jack T Battery compartment

ICD-ST10/ST20

Note : Disassemble the unit in the order as shown below.

SET

UPPER LID BLOCK ASSEMBLY

SECTION 2

DISASSEMBLY

MAIN BOARD

MICROPHONE BLOCK ASSEMBLY

S-SW BOARD,

MICROPHONE UNIT

Note : Follow the disassembly procedure in the numerical order given.

2-1. Upper Lid Block Assembly

two tapping screws

(B 1.7

two claws

F-SW BOARD

claw

Remove the

two solderings.

flexible board

two claws

claw

upper lid block assembly

2-2. F-SW Board

(SP3001)

two screws

(1.7 × 2.5)

speaker (2.8 cm)

tapping screw

(1.7 × 2.5)

F-SW board

ICD-ST10/ST20

2-3. MAIN Board

MAIN board

upper lid sub block assembly

microphone unit

flexible board

flexible boar

claw

case block

ICD-ST10/ST20

2-4. S-SW Board, Microphone Block Assembly

ornament (L)

S-SW board

button (5D)

microphone block assembl

pan tapping screw

(M 1.4 × 3)

2-5. Microphone Unit

Microphone part is turned in the direction of arrow A,

and it removes in the direction of arrow B.

screw hole part

click plate

lid (connector)

ornament (R)

microphone case

microphone cushio

microphone unit

microphone cover

Microphone unit flexible

board is removed.

adhesive sheet

pan tapping screw

(M 1.4 × 2)

pan tapping screw

(M 1.4 × 4.5)

microphone base

2-6. The Cautions at the Time of a Microphone Block Assembly

microphone unit

flexible board

It inserts in a microphone base.

screw hole part

It turns in the direction of an arrow.

microphone case

pan tapping screw

(M 1.4

4.5)

ICD-ST10/ST20

microphone cushion

microphone unit

microphone cover

click plate

pan tapping screw

(M 1.4

microphone base

ICD-ST10/ST20

SECTION 3

TEST MODE

[Setting Method of the Test Mode]

To enter the test mode, turn on the HOLD . switch while pressing the x key and VOL+ key at the same time with the power on.

[Exiting Method of the Test Mode]

Exit the test mode by turning off the power.

[Initial Status of the Test Mode]

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

LCD display (Example)

A B

102

01ST20

102

ST20

Iris(DSP) version : 5A SakuraR(CPU) version : 1.02 (In α version or β version, A or B is displayed) LPEC ST version : 01 Model code : ST20

[Flow Chart of the Test Mode]

START

TEST MODE

RST

KEY

COUNT

USB

LED

BATTKEY

AU IO

LCD

SLEEP

BEEP

RTC

Initial status of test mode

Model code, LPEC ST,

F/W version display

[Operation in the Test Mode]

After entering the test mode, you can move within the test menu by pressing the . / > key. You can move to the submenu by pressing the x•B key. Then each test mode can be executed.

1. LCD test

• LCD is tested of all light-on and all light-off.

x B x B

LCD

ALL

LCD

OFF LCD CHK LCD ALL LCD

CBA

STSP

★ ★

★

888888

D E

REC

888

MM DS

(select), (set)

(LCD off)

x x x

CHK

START

CHK

END

2. Audio test

Perform the through-playback and sine wave output.

• Contents of the submenu

DSP ST: DSP STEREO through mode DSP MO: DSP MONO through mode SIN: 1 kHz sine wave output mode

• Select the microphone sensitivity with the A-B

HtMtLtHtMt

...

switch.

•The VOR detection operation can be checked by the LED.

Sound: The red LED is turned on. No sound: The red LED is

turned off.

• MUTE can be set to “ON” or “OFF” with the ERASE key.

•The sound volume can be adjusted with the VOL+ key or

VOL- key during the audio test except the MUTE mode.

• In the directional microphone selection, ON/OFF of the

DIRECTNL switch is performed with the DIVIDE key. DIRECTNL switch ON : The green LED is turned on.

OFF : The green LED is turned off.

• In the audio test mode the operation is performed according to

JACK detection.

•The microphone sensitivity, sound volume and MUTE (on/off)

are displayed on the LCD.

•The microphone sensitivity selection and the VOR test are

effective in the through-playback mode.

•The directional microphone selection is effective in the DSP

MONO through mode.

Tu rn off the power (Extract the batteries or DC jack)

END

TEST MODE

DSP STEREO through mode / MIC : M / MUTE : ON / VOL-LEVEL : 12

DSP MONO through mode / MIC : H / MUTE : OFF / VOL-LEVEL : 23

1k sine wave output mode / MUTE : ON / VOL-LEVEL : 06 t "on / 06 / SIN"

x B

AU IO DSP ST

DSP MO SIN DSP ST

DSP ST

t "M / on / 12 / DSP ST"

t "H / oF / 23 / DSP MO"

(select), (set)

DSP MO

x B

SIN

x x x

ICD-ST10/ST20

BATTBATT BATTBATT

DC jack is inserted

DC jack is extracted

x B

LED

x B

3. Sleep test

•Pressing the x•B key causes the set to enter the sleep state.

•When the HOLD . switch is ON, the LCD is turned off. When OFF, the LCD is turned on.

•Press any keys to exit the sleep state.

x B

(with HOLD.

OFF status)

SLEEP

x B

(with HOLD.

ON status)

SOON

INSLEEP

(LCD OFF)

any keys any keys

4. Beep test

• Beep sound of 1.3 kHz or 2 kHz is output.

x B

BEEP 1.3K

2.0K

1.3K

(select), (set)

1.3K 2.0K

x x

x B

5. RTC test

•Perform the function test of the RTC and EEPROM.

(1) RTC EEPROM test

Confirmation of writing, reading (verifying) and erasing of arbitrary data with the specified registers.

(2) RTC clock function test

Confirmation that RTC updates the time to the microcomputer at one second interval.

• OK, NG judgement is performed to the test result.

When NG, it is displayed which device RTC or EEPROM

becomes NG. (All OK : "RTC OK" / RTC NG : "RTC BAD" / EEPROM NG : "EEP BAD")

x B

RTCRTC

6. Key entry test

•When the any key is pressed, the entry key and the A/D converted value (hexadecimal) of the two channel keys are displayed.

•When the x key is pressed, the A/D value of the key is displayed while the key is depressed. When the key is released, the screen returns to the test menu.

x B

oFF

KEYiFFKEY

7. Battery remaining power and DC IN test

•The detected A/D value (hexadecimal) of the battery remaining power is displayed. When DC jack is inserted, the battery mark on the LCD is turned off.

8. LED test

• LEDs (OPR: red and green, BL: green) are all turned on.

9. USB test

• When the menu starts the USB self-check, either presence or absence of the Vbus is judged. (Vbus is present: “ON VBUS”, Vbus is absent: “OFF VBUS”)

•The USB driver always works regardless of presence or absence of the USB signal only when Vbus is available during the USB test. At this time, turning on HOLD . causes the set to move to the suspend state. Turning off the Vbus causes the set to return to the test menu.

• In the menumode if the Vbus is supplied, any key will not work. Therefore the Vbus will be supplied after surely pressing the x •B key.

USB

x B

OFF

VBUS

Vbus

VBUS

HOLD.

LINK

cut Vbuscut Vbus

Suspend mode

10. Menu reset

•Pressing the x•B key causes the set to enter the menu initialization standby state.

•When the following keys are all entered, the EEPROM initialization (returning setting in the menu and user name to default value) and formatting process (deleting all message files in the flash memory) are executed. At the same time, the WakeUp signal is checked, too.

Check keys: VOL- , VOL+ , A-B , ERASE ,

DIVIDE , DPC ON , DPC OFF , . ,

x•B , > , FOLDER , MENU , x , z REC , HOLD

OFF ,

DIRECTNL ON

ON , HOLD

, and DIRECTNL

OFF

• If all tests end in success, “-ALLOK-” is displayed. If initialization in the EEPROM is NG, “INIT. NG” appears.

•Turn off the power to exit the test mode.

All keys

x B

RST

are entered

KEY

PUSH INIT

(blinking)

In the case that the initialization and reset operation end correctly.

ALL

ICD-ST10/ST20

11. Key durable test

•Pressing the x•B key makes the count to "------" and sets test standby status. Once more pressing the x•B key makes the count to "000000" and sets the key durable test. In this mode any key input and slide switch operation are counted and the number is displayed. Turn off the power to exit this mode.

x B x B

KEY

COUNT

KEY

------

000000

Key durable test

KEY

any keys or slide switches operation

KEY

000001

SECTION 4

DIAGRAMS

ICD-ST10/ST20

Note on Schematic Diagrams:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

•

• C : panel designation.

• A : B+ Line.

•Power voltage is dc 3V and fed with regulated dc power

•Voltages and waveforms are dc with respect to ground

•Voltages are taken with a VOM (Input impedance 10 MΩ).

•Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

✩Replacement of IC6001 used in this set requires a spe-

• The voltage and waveform of CSP (chip size package)

: internal component.

supply from DC IN jack (J5001). under no-signal (detuned) conditions.

no mark : PB []: REC

Voltage variations may be noted due to normal production tolerances.

F : PB L : REC

cial tool. cannot be measured, because its lead layout is different

from that of conventional IC.

: Impossible to measure

∗

W or less unless otherwise

Note on Printed Wiring Boards:

• Y : parts extracted from the conductor side.

• b : Pattern from the side which enables seeing.

The other layers’ patterns are not indicated.

Caution: Pattern face side: Parts on the pattern f ace side seen from (SIDE B) the pattern face are indicated. Parts face side: Parts on the parts face side seen from

(SIDE A) the parts face are indicated.

• MAIN board is multi-layer printed board. However, the patterns of intermediate-layer have not been included in the diagram.

✩Replacement of IC6001 used in this set requires a spe-

cial tool.

• Lead layouts

surface

Lead layout of

conventional IC

CSP (chip size package)

• WA VEFORMS

IC6003 3 (XXT)

88.5 ns

1 V/DIV, 40 ns/DIV

IC6003 1 (FOUT)

1 V/DIV, 40 ns/DIV

88.5 ns

3.3 Vp-p

4.1 Vp-p

IC3004 6 (MCLK)

1 V/DIV, 40 ns/DIV

IC7003 <z/, (XTAL)

1 V/DIV, 100 ns/DIV

88.5 ns

244 ns

4.1 Vp-p

3.4 Vp-p

IC8001 qd (X OUT)

(When the USB is connected)

8.33 ns

1 V/DIV, 40 ns/DIV

IC7004 5 (FOUT)

1 V/DIV, 10 µs/DIV

3.7 Vp-p

3.2 Vp-p

30.5 ns

1111

ICD-ST10/ST20

4-1. Block Diagrams – Main Section-1 –

MIC1

(ZOOM)

MIC2

(L-CH)

MIC3

(R-CH)

J3001

PLUG IN POWER

Q3002

Q3004

IC3002

MIC AMP

IN+

REG

OUT

STBY

MICVCC

INTINL

INTINR

EXTINR

EXTINL

CTL1

IC3001

MIC AMP

OUTL

OUTR

INT/EXT

VCC

IC3004

ADC, DAC, HEADPHONE AMP

AINR2

STDO

BICK

LRCK

SDTI

AINL2

Q3001

Q5008

B+ SWITCH

AVDD

AINL1

AINR1

STDO

BCLK

LRCK

XRST

J3002

SP3001

(SPEAKER)

POWER AMP

VO1

VO2

D902

(OPR)

(REC/PB)

XBATTEN

IC3003

XSHUT-

DOWN

-IN

RED(REC)

GREEN(PB)

SI/PO DRIVER

MONOMIC

SPAMP

XREDLED

XGRLED

XBATTEN

CLK

DATA

IC7001

XADAPDN

XDSPRST

Q3003 MUTE

HPMUTE

XSTMIC

XLIGHT1

XLIGHT2

MCLK

CDTI

CCLK

MIN

CSN

IC6003

CLOCK GEN

FOUT

XXT XCONT

HPR

HPL

MOUT

PDN

X6001

11.2896MHz 5

D7002

(LCD PANEL LIGHT)

D7003

3 4

MCLK

IC7004

REAL TIME CLOCK

CLK

XIRQ

FOUT

Signal path

: PB

: REC

HPJACK

115

SPICLK

SPIDATA

IC7003 (1/3)

CPU

XMICJACK

DSPSYSCLK

102

BEEP

XADACS

100

AUSCK

AUSOT

10112116

AUSIN

RTCCS

X0A32K

111

XRTCINTR

1212

+ 26 hidden pages

Sony ICDST-10, ICDST-20 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Index to Parts and Controls

UPPER LID BLOCK ASSEMBLY

DISASSEMBLY

F-SW board

MAIN board

microphone unit

TEST MODE