Sony ICD-ST25 Digital Voice Editor 2, Service Manual

Page: 9 / 42

9
ICD-ST25
SECTION 3
TEST MODE
[Setting Method of the Test Mode]
To enter the test mode, turn on the HOLD . switch while pressing
the x key and VOL+ key at the same time with the power on.
[Exiting Method of the Test Mode]
Exit the test mode by turning off the power.
[Initial Status of the Test Mode]
When the test mode is set, the LCD display appears as shown below.
LCD display (Example)
[Operation in the Test Mode]
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.
1. LCD test
• LCD is tested of all light-on and all light-off.
2. Audio test
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.
H t L t H t L t H t
...
• 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
DIRECTNL 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
effective in the through-playback mode.
• The directional microphone selection is effective in the DSP
MONO through mode.
[Flow Chart of the Test Mode]
Iris(DSP) version : 69
SakuraR(CPU) version : 1.01
LPEC ST version : 01
Model code : ST25
69
101
01
ST25
101
01ST25
69
START
TEST MODE
Initial status of test mode
Model code, LPEC ST,
F/W version display
TEST MODE
>
.
.
.
>
>
.
END
>
LCD
AU IO
SLEEP
BEEP
RTC
RST
MENU
KEY
COUNT
USB
LED
BATT KEY
>
>
>
>
.
.
.
. >
>
>
>
.
.
.
.
Turn off the power
(Extract the batteries or DC jack)
. >
. >
OFF LCD
CHK LCD
ALL LCD
:
:
LCD
ALL
LCD
CHK
START
CHK
END
C B A
REC
D E
STSPLP
H
M
L
YM
88
888
888888
MM DS
m
★
★
★
(select), (set)
(LCD off)
x
x x x
x B x B
DSP STEREO through mode / MIC : L / MUTE : ON / VOL-LEVEL : 12
t "L / 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"
:
:
DSP MO
SIN
DSP ST
AU IO DSP ST
23
DSP MO
oF
H
m
12
DSP ST
on
L
m
06
SIN
on
. >
(select), (set)
x
x x x
x B
x B