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3

This section is extracted from
instruction manual.

wh

wg

wf

wa

ws

wd

wa

PLAY SPEED selector (18)

ws

MIC SENS (microphone
sensitivity) selector (14)

wd

VOR selector (15)

wf

Clip*

wg

Battery compartment (8)

wh

Hook for handstrap (not
supplied)

1

MIC (built-in microphone)
(12)

2

Display window (64)

3

FOLDER button (12, 16)

4

INDEX/BOOKMARK
button (22, 26)

5

DISPLAY button (39)

6

A-B REPEAT/PRIORITY
button (23, 30)

7

MENU button (10, 32, 35, 40,
41)

8

ERASE button (20)

9

xSTOP button (13, 17)

q;

Speaker

qa

MIC (PLUG IN POWER)
jack (15)

qs

EAR (earphone) jack (14, 17)

qd

OPR (operation) indicator
(12, 17)

qf

zREC (record) /STOP
button (13, 24)

qg

X PAUSE button (13, 17)

qh

.REVIEW/>CUE (fast
backward, review/fast
forward, cue•selection of
menu mode) button  (10, 16,
18, 19, 22, 26, 30, 32, 35, 40,
41)

qj

NxPLAY/STOP
•EXECUTE (play/
stop•enter) button (10, 17,
18, 29, 30, 32, 35, 40, 41)

qk

HOLD switch (38)

ql

VOL (volume) control (17)

w;

USB connector for
connecting to a computer
(48)

qa

qs

qd

qf

qg

qh

qj

qk

ql

w;

q;

9

8

7

6

5

4

3

2

1

4

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

Set

Sub block assy,upper lid

F-SW board

PC board

MAIN board, P-SW board

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

3

 Remove two solderings

4

5

 Sub block assy, upper lid

1

 Screw (B1.7 

× 

10)

2

 Screw (B1.7 

×

 7)

Case assy

2

3

 F-SW board

1

 Connector (CN703)

Case assy

5

5

2

 PC CAP

Claws

Case assy

3

 Connector

     (CN802)

4

 MAIN board

7

 P-SW board

6

 Remove seven solderings

1

 

Screw (1.7

 

×

 4)

2

1

 Screw (1.7 

×

 4)

3

 PC board

Case assy

6

• 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

/

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.

• Voltages 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

* 

Replacement of IC109 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 different
from that of conventional IC.

Note on Printed Wiring Boards:
• Y

 : parts extracted from the conductor side.

• b

 : 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.

* 

Replacement of IC109 used in this set requires a special
tool.

• 

Lead layouts

surface

Lead layout of

conventional IC

CSP (chip size package)