Sony ICDP-320 Service manual

ICD-P320

SERVICE MANUAL

Ver. 1.0 2005. 12

SPECIFICATIONS

Recording media Built-in flash memory 64 MB,

Monaural recording

Recording time HQ: 7 hours 20 minutes

SP: 19 hours 35 minutes LP: 32 hours 10 minutes

Frequency range HQ: 260 Hz – 6,800 Hz

SP/LP: 220 Hz – 3,400 Hz Speaker approx. 2.8 cm (1 1/8 in.) dia. Power output 250 mW Input/Output • Earphone jack (minijack) for

8 – 300 ohms ear receiver/headphones

• Microphone jack (minijack, monaural) Plug in power Minimum input level 0.6 mV 3 kilohms or lower impedance microphone

• USB connector

Power requirements Two LR03 (size AAA) alkaline batteries:

3 V DC

Dimensions (w/h/d) (not incl. projecting parts and controls)

34.6 × 109.5 × 18.0 mm (1 3/8 × 4 3/8 × 23/32 in.)

Mass (incl. batteries) 68g (2.4 oz)

US Model UK Model

Chinese Model

Korea Model

Supplied accessories Operating instructions (for the IC recorder (1)/for

the application software (1)) Headphone (1) (CH, KR model) Carrying pouch (1) (CH, KR model) USB connecting cable (1) Application software (CD-ROM) (1)

Design and specifications are subject to change without notice.

• Abbreviation CH: Chinese model KR: Korean model

9-879-994-01

IC RECORDER

Sony Corporation

Connect Company Published by Sony Engineering Corporation

ICD-P320

1. GENERAL

...................................................................... 3

2. DISASSEMBLY

2-1. Case (Front) Assy ............................................................... 4

2-2. MAIN Board....................................................................... 5

2-3. USB Board ......................................................................... 5

3. TEST MODE.................................................................. 6

4. DIAGRAMS

4-1. Block Diagram ................................................................... 9

4-2. Printed Wiring Board – MAIN Section – ........................ 11

4-3. Schematic Diagram – MAIN Section (1/2) – .................. 12

4-4. Schematic Diagram – MAIN Section (2/2) – .................. 13

4-5. Printed Wiring Board – USB Section – .......................... 14

4-6. Schematic Diagram – USB Section –.............................. 15

5. EXPLODED VIEWS

5-1. Case (Front) Section ......................................................... 19

5-2. Case (Rear) Section .......................................................... 20

6. ELECTRICAL PARTS LIST ................................... 21

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 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 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.

• Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. Operating instructiondd

SECTION 1

GENERAL

Index to Parts and Controls

Main unit

ICD-P320

This section is extracted from instruction manual.

Rear

MIC (built-in microphone)

REC (record) /PAUSE

– .

(review/fast backward)

(cue/fast forward)

USB connector

Battery compartment

Hook for handstrap (not supplied)

(microphone) jack

Display window

DISPLAY/MENU

DIVIDE

STOP

(SELECT)

Speaker

Display window

Microphone sensitivity

Selected message number

REC DATE (recorded date)

Folder indication

Alarm indicator

indication

REMAIN indicator

Remaining memory

indicator

(earphone) jack

OPR (operation) indicator

ERASE VOL (volume) control*

HOLD

PLAY/STOP (ENTER)**

There is a tactile dot beside the control to show the direction to turn up the volume.

The button has a tactile dot.

Remaining battery indicator

Recording mode indication

REC (recording) indicator

Repeat play indicator EASY-S (Easy Search)

indicator Number of messages in

a folder/Menu indication/Counter / Remaining time indication /Recording date indication /Current time indication / Messages

ICD-P320

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

SET

2-1. CASE (FRONT) ASSY

(Page 4)

2-2. MAIN BOARD

(Page 5)

2-3. USB BOARD

(Page 5)

SECTION 2

DISASSEMBLY

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

2-1. CASE (FRONT) ASSY

speaker

two brackets (speaker)

two screws

two claws

claw

case (front) assy

claw

battery case lid

claw

screw

2-2. MAIN BOARD

MAIN board

S701

CN2001

insulating sheet

screw

ICD-P320

2-3. USB BOARD

two screws

USB board

ICD-P320

SECTION 3

TEST MODE

1. Outline of the TEST MODE

The TEST MODE is designed to help verify the set when servicing it. The TEST MODE is only menu driven to select modes for servicing.

2. Entering and Canceling the TEST MODE

With the power on, turn on the [HOLD] switch while pressing the

x STOP button and the [DISPLAY/MENU] button at the same time.

3. Canceling the TEST MODE

The TEST MODE can be cancelled by turning off the power (unplugging the dry battery).

4. Menu Key Designation

The menu has the five modes descr ibed belo w. The f ollowing keys are assigned on the initial screen (version display).

5. Key Assignment

From within TEST MODE, the intended menu can be entered by using the appropriate one key of the following key.

LCD Test (All OnyAll Off) DISPLAY/MENU

BEEP Test (1.3 kHz) ERASE

HQ-DSP LOOP zX REC/PAUSE

SP-DSP LOOP . – LP-DSP LOOP > +

USB T est Nx PLAY/STOP(ENTER)

REST MENU Test DIVIDE

Initial Display from each mode x STOP

5-3. BEEP Test

To enter the BEEP Test, press the [ERASE] button.

Beep: Frequency 1.3 kHz only

Press the

x STOP button to return to the initial screen (memory and

CPU version).

5-4. DSP LOOP

The DSP LOOP modes can be entered selectively by pressing the appropriate one of the following three keys. Within the LOOP test menu, “LOOP” is displayed. The sensitivity character H or L is displayed depending on the position into which the [HOLD] switch is placed. The sensitivity H is displayed when [HOLD] switch is in the ON position. The sensitivity L is displayed when [HOLD] switch is in the OFF position.

zX REC/PAUSE

5-1. Initial Display in TEST MODE

LCD indications (destination information, memory capacity, CPU FW information and MIC sens) when TEST MODE is entered:

Memory capacity

MIC sens

(128-128 MB) (64-64 MB)

Destination information

(32-32 MB) (16-16 MB)

CPU FW information

5-2. LCD Test

To enter the LCD Test, press the [DISPLAY/MENU] button. T he LCD Test has two modes: All On and All Off First all the indicators are on. All the indicators are off when the button is pressed again.

ALL ON

ABCD

REC

DATE

REMAIN

LOCAL YH MM MHz DS

Press the

SPHQ

REQ

EASY-S

DISPLAY/MENU

Switch between the modes.

x STOP button to return to the initial display (destination

ALL OFF

information, memory capacity, CPU FW information and MIC sens).

To change the DSP LOOP test mode, press the

x STOP button, then

select the zX REC/PAUSE button, . – button, or > + button. In a DSP Test mode, to select another DSP Test mode and to select the other sensitivity, the x STOP button also has to be pressed.

Sensitivity H

HOLD

ICD-P320

• SUSPEND Test With the VBUS ON, turn the [HOLD] switch ON to enter the SUSPEND mode. When this mode is cancelled, the VBUS is turned OFF.

with VBUS

Nx PLAY/STOP (ENTER)

x STOP

OFF

Sensitivity L

To change the sensitivity again, press the x STOP button and change the [HOLD] switch. In a DSP T est mode, changing the mode and changing the sensitivity require the x STOP button be pressed.

5-5. USB Test

In this test, the ON/OFF status of VBUS is displayed and the SUSPEND test is performed.

The Nx PLAY/STOP(ENTER) button is pressed to display the status of VBUS by “On” or “OFF” indication. With the VBUS ON, the [HOLD] switch is operated (ON) to perform the SUSPEND test.

• VBUS Test

with VBUS

Nx PLAY/STOP (ENTER)

x STOP

VBUS OFF

5-6. RESET MENU

To enter the RESET MENU test, press the [DIVIDE] button. When all of the buttons or controls located on the set are operated, the system shows “Ok” if all of them are normally operated. An operation of a switch is indicated by the number for verification in order to make a simple indication.

Note 1: When 10 different operations of the switches are normally

made in any order (regardless of the order that pushbuttons are pressed and the slide switch is set to ON and OFF), the system shows “Ok”.

Note 2: Clear memory when “ ACCESS” is blinking on the display .

(Do this before “Ok” is shown.) To exit from this menu, the power has to be turned off (battery to be removed).

HOLD

SUSPEND mode

x STOP

without VBUS

ICD-P320

Press DIVIDE button.

Indication after DIVIDE button is pressed.

• Switches and corresponding LCD indications Switch Indication

DIVIDE 1

DISPLAY/MENU 2

zX REC/PAUSE 3

Nx PLAY/STOP(ENTER) 4

. –5

x STOP 6

> +7

ERASE 8

HOLD-OFF 9

HOLD-ON 10

ERASE

：：：

Indication after DISPLAY/MENU

button is pressed.

VOL

DIVIDE

Indication after zX REC/PAUSE

1 2

PLAY/STOP(ENTER)

REC/PAUSE

DISPLAY/MENU

HOLD

OFF

button is pressed.

− STOP ＋

5 6 7

Indication after HOLD is set to OFF.

Indication after HOLD is set to ON. t If any key is not pressed, the system waits for the key to be pressed.

Clear memory when "ACCESS" is blinking on the display. The system shows "Ok".

+ 16 hidden pages

Sony ICDP-320 Service manual

TABLE OF CONTENTS

GENERAL

DISASSEMBLY

case (front) assy

MAIN board

USB board

TEST MODE