Sony ICD-B200RS User manual

1
Ver. 1.0 2005.04
SERVICE MANUAL
US Model
ICD-B200RS
SPECIFICATIONS
Recording media Built-in flash memory 32MB,
Monaural recording
Recording time HQ : 3 hours 40 minutes
SP : 9 hours 50 minutes
LP : 16 hours 10minutes
Frequency range HQ : 250 Hz – 6,800 Hz
SP/LP: 220 Hz – 3,400 Hz
Speaker approx. 2.0 cm (13/16 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
Power requirements Two LR03 (size AAA) alkaline batteries: 3 V DC
Dimensions (w/h/d) (not incl. projecting parts and controls)
30.0 ×103.5 ×16.0 mm (1 3/16 ×4 1/8 ×21/32 in.)
Mass (incl. batteries) 58 g (2.1 oz)
Supplied accessories Operating instructions (1)/Ear receiver
(MDR-E0110LP) (1)
Design and specifications are subject to change without
notice.
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
IC RECORDER
9-879-655-01
2005D04-1
© 2005.04

2
ICD-B200RS
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.
zUNLEADED 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
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.
TABLE OF CONTENTS
1. GENERAL ................................................................... 3
2. DISASSEMBLY
2-1. Case (Front) Assy ............................................................ 4
2-2. SWITCH Board, MAIN Board ....................................... 5
2-3. AUDIO Board.................................................................. 5
3. SERVICE MODE ....................................................... 6
4. DIAGRAMS
4-1. Block Diagram ................................................................ 11
4-2. Printed Wiring Board – AUDIO Section – ..................... 12
4-3. Schematic Diagram – AUDIO Section – ........................ 13
4-4. Printed Wiring Board – MAIN Section – ....................... 14
4-5. Printed Wiring Board – SWITCH Section – .................. 15
4-6. Schematic Diagram – MAIN Section –.......................... 16
5. EXPLODED VIEWS
5-1. MAIN Board Section....................................................... 20
5-2. Case (Rear) Section ......................................................... 21
6. ELECTRICAL PARTS LIST .................................. 22

3
ICD-B200RS
SECTION 1
GENERAL This section is extracted
from instruction manual.
Index to Parts and Controls
Main unit
MIC (built-in microphone)
Display window
MENU
DISPLAY
zX REC (record) /PAUSE
Nx PLAY/STOP (ENTER)
– .
(review/fast backward) /
>+
(cue/fast forward) (SELECT)
Speaker
Rear Hook for handstrap
(not supplied)
MIC SENS
(microphone
sensitivity)
Battery
compartment
Display window
Folder indication
Alarm indicator
Repeat play indicator
Selected message
number
REC DATE (recorded
date) indication
REMAIN indicator
MIC jack (PLUG IN POWER)
EAR (earphone) jack
OPR (operation) indicator
ERASE
FOLDER
VOL (volume) +/–
DIVIDE
HOLD
xSTOP
Remaining memory
indicator
Remaining battery
indicator
Recording mode
indication
REC (recording)
indicator
Number of messages
in a folder/Menu
indication/Counter
/Remaining time
indication /
Recording date
indication /Current
time indication /
Messages

4
ICD-B200RS SECTION 2
DISASSEMBLY
•This set can be disassembled in the order shown below.
Note: Follow the disassembly procedure in the numerical order given.
2-1. CASE (FRONT) ASSY
2-1. CASE (FRONT) ASSY
(Page 4)
2-2. SWITCH BOARD,
MAIN BOARD
(Page 5)
SET
2-3. AUDIO BOARD
(Page 5)
2 screw
3 screw
4 claw
5 two claws
7 case (front) assy
6 two claws
1 battery case lid

5
ICD-B200RS
2-2. SWITCH BOARD, MAIN BOARD
2-3. AUDIO BOARD
1 CN705
2 SWITCH board
4 MAIN board
S701
3 CN701
5 claw
6
9
8
7
claw
S702
3 screw
2 cushion (battery case lid)
1 battery case lid
0 AUDIO board
4 speaker (2cm)

6
ICD-B200RS SECTION 3
SERVICE MODE
3-1. Setting the Service Mode
To enter the service mode, use the following procedure:
With the power on, turn the HOLD switch on while pressing the
xSTOP key and the VOLUME– key.
3-2. Resetting the Service Mode
The service mode is reset by turning the power off (removing the
power cord).
3-3. Initial State of the Service Mode
3-3-2. FlashMemory ID display
The ID of FlashMemory is displayed. This ID represents the
manufacturer code and device code.
The service mode has the initial screen of “Version display”. A
desired test mode under service mode is selected by pressing the
.+ keyor >– key. Then, the testingoperation in theselected
mode is determined by using the Bx key.
3-3-1. Version display
The version display is the initial screen in service mode and shows
the set name and the version No.
3-3-3. BadBlock count display
The count of initially faulty blocks for FlashMemory data is
displayed.
(Initial screen)
Version
display
Key Test
Reset Menu
Dsp Loop
Test Battery
Value
Flash
Memory
ID display
BadBlock
count
display
Lcd
Test
Beep
Test
Set name
Version No
"1.00"
Device code
Manufacturer cod
e
TOSHIBA
SAMSUNG
Manufacturer code
98
EC
Device code
(Memory Size)
16MB 32MB
73 75
73 75
BadBlock
count

7
ICD-B200RS
3-3-4. LCD test
The initial screen for LCD test displays the blinking characters
“LCD”. The LCD test mode includes seven different LCD tests.
The LCD test mode is executed by pressing the Bx key while the
“LCD”characters are blinking.
Pressing of the xSTOP key during any LCD test (display) will
return to this initial screen for LCD test. The LCD tests present the
following displays:
1. All LCD segments on
2. All LCD segments off
3. All LCD segments blinking
4. Even segments displayed
5. Odd segments displayed
6. LCD1 segments displayed
7. LCD set characters displayed
1) Segment test
The segment test is intended to check whether Com-Seg Map is
correct or not. When this test mode is selected, the initial screen
displays the blinking characters “SEG”.
The number of segments are 120. The segment test is executed by
pressing the Bx key while the “LCD” characters are blinking.
Pressing of the xSTOP key during any display of the segment
test will return to the initial screen for LCD test. The segment test
includes the following displays:
Initial screen for LCD TEST
All ON
STOP
Character display
Segment
ODD EVEN
All OFF
All blinking
STOP
This cycle is repeated until
the
key is pressed (toggle).
Segment
Initial screen
for LCD TEST

8
ICD-B200RS
2) MOJI test
The MOJI test is intended to show the character display (characters/
digits). When this test mode is selected, the initial screen displays
the blinking characters “MOJI”. The MOJI test is executed by
pressing the Bx key while the “MOJI”characters are blinking.
Pressing of the xSTOP key during any display of the MOJI test
will return to the initial screen for LCD test.The MOJI test includes
the following displays:
3-3-5. BEEP test
The beep test is intended to sound 2.4 kHz beeps. When this test
mode is selected, the initial screen displays the blinking characters
“BEEP”. The beep test is executed by pressing the Bx key while
the “BEEP” characters are blinking. By pressing the xSTOP key,
the beep sound will stop returning you to the initial screen for beep
test. The beep test includes the following displays:
Initial screen
for LCD TEST
STOP
This cycle is repeated until
the
key is pressed (toggle).
Character display
3-3-6. Battery value
The voltage value of the battery inserted into the set is displayed in
hexadecimalformat.Thevalueisinvalidwhen the adapterisinserted.
STOP
Initial screen
for BEEP TEST
beep
3-3-7. DSP LOOP test
The DSP loop test has the following flow:
DSP
MIC MIC AMP
POWER
AMP
SPEAKER
Note : Incoming voice data from the MIC is outputted to the
speaker as it is.
Voice Voice
VOICE
VoiceVoice
Battery voltage value
(HEX value)
BATTERY display screen
The initial screen for DSP loop test displays the blinking characters
“DSP”. The DSP loop test is executed by pressing the Bx key
while the “DSP” characters are blinking. Pressing of the xSTOP
key during any display of DSP loop test will return you to the initial
screen for DSP loop test.
Thevolumecanbe changedby using theVOLUME+ or VOLUME–
key. Thevolumevaluecan besetto 0 to30 levels,butisnot displayed
on the screen when changed. The DSP loop test includes the
following displays:
STOP
STOP
STOP
SP MODE LP MODEHQ MODE
Initial screen for
DSP LOOP TEST
Note: The volume value can be set to 0 to 30 levels,
but is not displayed on the screen when changed.

9
ICD-B200RS
3-3-8. Reset menu
The reset menu is used to initialize menu contents.When this mode
is selected, the initial screen for reset menu displays the characters
“RST MENU”. Pressing of Bx key during “RST MENU”
character display will cause the menu information to be initialized.
The reset menu includes the following items:
Initialization
of MENU contents
Initial screen
for RESET MENU
Note: The display remains unchanged
when the MENU is being reset.
3-3-9. KEY test
The key test is intended to check whether any key pressed is
recognized or not (AD misdetection check). When this test mode is
selected,the initialscreenforkeytestdisplays the blinkingcharacters
“KEY TEST”. By pressing the Bx key while the “KEY TEST”
characters are blinking, the characters “PLAY” will be displayed
entering the key test screen.
Once the key test is started, the test will not be completed until all
of keys are pressed. To exit from the key test mode, turn the power
off (remove the power cord). The key test includes the following
key tests:
DIVIDE FOLDER ERASE
All of keys or switches completed
to be pressed.
FlashMemory being accessed
(Initialization of MENU information) Completed
KEY TEST screen
Initial screen for KEY TEST
STOP
DISPLAY VOLUME–VOLUME+
MENU
MENU item
REC MODE
VOR
CONTINUE
ALARM
BEEP
SETDATE
Initial setting
SP
OFF
OFF
OFF
ON
No setting
KEY name
xSTOP
Bx
>+
.–
zX
MENU
DISPLAY
VOLUME–
VOLUME+
FOLDER
ERASE
DIVIDE
LCD display
STOP
PLAY
FF
REW
REC
MENU
DISP
VOL M
VOL P
FOL
ERASE
DIVIDE

10
ICD-B200RS SECTION 4
DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
Common Note on Schematic Diagrams:
•All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•f: internal component.
•C: panel designation.
•A: B+ Line.
•Power voltage is dc 3V and fed with regulated dc power
supply from battery terminal.
•Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : REC
():PB
•Voltagesaretakenwith aVOM(Input impedance10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
E: PB
a: REC
Common Note on Printed Wiring Boards:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•f: internal component.
•: Pattern from the side which enables seeing.
Caution:
Pattern face side: Partsonthe patternfacesideseen 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.
•Waverforms
– AUDIO board –
0.8 Vp-p
4.096 MHz
1IC101 ta (XOUT)
0.5 V/DIV, 0.1 µ sec/DIV
– MAIN board –
1 IC704 1(32KOUT)
2.2 Vp-p
1.2 Vp-p
3.2 Vp-p
5 MHz
32.768 kHz
32.768 kHz
2 IC704 8(OSCOUT)
1.0 V/DIV, 10 µ sec/DIV
3 IC703 ul (X2)
0.5 V/DIV, 10 µ sec/DIV
1.0 V/DIV, 0.2
µ sec/DIV