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8

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  x STOP  key during any display of the MOJI test
will return to the initial screen for LCD test. The MOJI test includes
the following displays:

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  x STOP  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

The voltage value of the battery inserted into the set is displayed in
hexadecimal format. The value is invalid when the adapter is inserted.

STOP

Initial screen 
for BEEP TEST

beep 

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

Voice

Voice

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  x STOP
key during any display of DSP loop test will return you to the initial
screen for DSP loop test.
The volume can be changed by using the VOLUME+  or  VOLUME–
key. The volume value can be set to 0 to 30 levels, but is not displayed
on the screen when changed. The DSP loop test includes the
following displays:

STOP

STOP

STOP

SP MODE

LP MODE

HQ 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

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.

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 initial screen for key test displays the blinking characters
“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

REC MODE

VOR

CONTINUE

ALARM

BEEP

SET DATE

SP

OFF

OFF

OFF

ON

No setting

x

STOP

Bx

>

+

.

–

zX

MENU

DISPLAY

VOLUME–

VOLUME+

FOLDER

ERASE

DIVIDE

STOP

PLAY

FF

REW

REC

MENU

DISP

VOL M

VOL P

FOL

ERASE

DIVIDE

10

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 

Ω

 and 

1

/

4

 

W 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

• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

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

• 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:

Parts on the pattern face 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.

11

11

ICD-B200RS

 Signal path

             : PB

             : REC

23

26

51

52

25 27 58 24 54

LCD701

LIQUID

CRYSTAL

DISPLAY

PANEL

LED

DRIVER

Q701

IC702

+3V(VDD)

MIC101

MIC

J101

MIC

IC701

FLASH MEMORY

SL701

(TEST)

Q702

VDD

S701

HOLD

OFF       ON

+3.3V

(VCC C)

D701

REC/PB

(GRN)(PB)

(RED)(REC)

J103

EAR

 IC101

A/D,D/A CONVERTER,

DSP

(PLUG IN POWER)

X101

4.096MHz

X701

5MHz

S709-713

S703-708

S715

KEY-IN

DETECT

Q703,704,706

VCC

+3.3V

(VCCB)

VCC

VCCA

+3.3V

(VCC A)

+3.3V

(VCC B)

VDD

SP1

SPEAKER

IC104

SPEAKER AMP

+3V

(VDD)

X702

32.768kHz

VDD

+3.3V
(VCC C)

+3.3V

(VCC A)

3

IC502

+3.3V REG

+3.3V

(VCC B)

3

IC503

+3.3V REG

+3.3V

(VCC C)

IC504

+3.3V REG

IC506

VOLTAGE DETECT

+3(VDD)

IC102

MIC AMP

IC508,Q504

Q101

MUTE

DRY BATTERY

SIZE  "AAA"

(IEC DESIGNATION LR03)

2PCS,3V

KEY MATRIX

S702

MIC SENS

LOW

HIGH

Q104

HP MUTE

BATTERY

DETECT

Q501

MIC

SENS

Q102