DOWNLOAD Sony ICD-SX46 / ICD-SX56 / ICD-SX66 Service Manual ↓ Size: 2.11 MB | Pages: 39 in PDF or view online for FREE

9

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

Exit the test mode by turning off the power.

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

START

>

.

.

.

>

>

.

Initial status of test mode 

Model code, LPEC ST, 

F/W version display

TEST MODE

END

TEST MODE

Turn off the power
(Extract the batteries or DC jack)

>

USB

KEY COUNT

RESET MENU

LED

B A T T

KEY

LCD

AUDIO

SLEEP

BEEP

RTC

>

>

>

>

.

.

.

.

>

>

>

>

.

.

.

.

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.

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

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 

   switch.

HtMtLtHtMt ...

• 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 DI-
RECTNL 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 ef-

fective in the through-playback mode.

• The directional microphone selection is effective in the DSP

MONO through mode.

6d
01
b110

-56

6d

01 b110-56

Iris(DSP) version : 6d
LPEC ST version : 01
SakuraR(CPU) version : 1.10
(In 

α

 version or 

β

 version, A or B is displayed)

Model code : SX56

x

•

B

.

>

LCD OFF

LCD CHK

LCD ALL

:

:

LCD ALL

CHK START

CHK END 

LCD

x

x

x

x

B

A

D

C

E

REC

STLPSP

L

H

YH

88

8888 888888

MM

DS

m

(LCD off)

.

>

(select),

(set)

x

•

B

x

•

B

:

:

DSP MONO

SIN WAVE
DSP ST

AUDIO  

DSP ST 

oFDSP ST12

oFSIN WAV06

x

x

x

H

m

oFDSP M 23

L

m

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

t

 "M / on / 12 / DSP ST"

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

t

 "H / oF / 23 / DSP MO"

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

.

>

(select),

(set)

x

•

B

10

• 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.

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

• 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”)

• When the any key is pressed, the entry key and the A/D con-

verted value (hexadecimal) of the two channel keys are dis-
played.

• When the x key is pressed, the A/D value of the key is dis-

played while the key is depressed. When the key is released, the
screen returns to the test menu.

• 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.

any keys

any keys

(LCD OFF)

(with HOLD 

.

OFF status)

x

•

B

(with HOLD 

.

ON status)

x

•

B

SLEEP SOON

SLEEP IN 

SLEEP  

x

•

B

RTC  

RTC OK

x

bATT FF

bATT C2

x

•

B

DC jack

is inserted

DC jack

is extracted

B A T T

bATT FF

x

x

•

B

KEY oFFiFF

KEY   

x

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

• 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 ab-

sence 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.

• 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.

• Pressing the  x

•

B  key causes the set to enter the menu initial-

ization standby state.

• When the following keys are all entered, the EEPROM initial-

ization (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 . ON,   HOLD .  OFF,

DIRECTNL  ON, and   DIRECTNL  OFF,
VOICE UP  ON,  and   VOICE UP  OFF

x

•

B

LED ON

LED   

x

LED ON (orange)

LED OFF

x

•

B

ON 

cut Vbus

Vbus

on

cut Vbus

Suspend 
mode

HOLD 

.

SUSPEND

VBUS ON

VBUS OFF

USB  

x

x

•

B

x

•

B

any keys or slide

switches operation

KEY 000001

KEY 000000

KEY-----

KEY COUNT

x

Key durable

test

x

•

B

BEEP 2.0K

BEEP 1.3K

:

:

BEEP1.3K

  BEEP1.3K

 BEEP 2.0K

BEEP  

x

x

x

.

>

(select),

(set)

x

•

B

11

x

•

B

In the case that
the initialization

and reset operation

end correctly.

(0.5 sec. blinking) 

All keys 

are entered

ALL OK 

INIT

KEY PUSH 

RESET MENU

x

• If all tests end in success, “ALL OK” is displayed. If initializa-

tion in the EEPROM is NG, “INIT. NG” appears.

• Turn off the power to exit the test mode.

12

Note on Schematic Diagrams:
• All capacitors are in 

µ

F 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 tolerance.

•

C

: panel designation.

•

A

: B+ Line.

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

from DC IN jack (J5001).

• Voltages and waveforms are dc with respect to ground under no-

signal (detuned) conditions.
no mark : PLAY
[           ]

  

: REC

      ∗

  

: Impossible to measure

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

Ω

).

Voltage variations may be noted due to normal production toler-
ances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production toler-
ances.

• Circled numbers refer to waveforms.

• Signal path.

F

: PB

L

: REC

*

Replacement of IC6001 and IC7003 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 conven-
tional IC.

Note on Printed Wiring Boards:
•

Y

: parts extracted from the conductor side.

•

: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

*

Replacement of IC6001 and IC7003 used in this set requires a
special tool.

• Lead layouts

Lead layout of

conventional IC

CSP (chip size package)

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.

surface