Read Sony ICD-ST25VTP Service Manual online
10
ICD-ST25VTP
3. Sleep test
•
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.
4. Beep test
•
Beep sound of 1.3 kHz or 2 kHz is output.
5. RTC test
•
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.
arbitrary data with the specified registers.
(2) RTC clock function test
Confirmation that RTC updates the time to the microcomputer
at one second interval.
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 NG, it is displayed which device RTC or EEPROM
becomes NG.
(All OK : "RTC OK" / RTC NG : "RTC BAD" / EEPROM
NG : "EEP BAD")
6. Key entry test
•
When the any key is pressed, the entry key and the A/D con-
verted value (hexadecimal) of the three channel keys are dis-
played.
verted value (hexadecimal) of the three 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.
played while the key is depressed. When the key is released,
the screen returns to the test menu.
7. Battery remaining power and DC IN test
•
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.
power is displayed. When DC jack is inserted, the battery mark
on the LCD is turned off.
8. LED test
•
LEDs (OPR: red and green, BL: green) are all turned on.
9. USB test
•
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”)
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
absence of the USB signal only when Vbus is available during
the USB test. At this time, turning on HOLD
absence 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.
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
work.
Therefore the Vbus will be supplied after surely pressing the
x
•
B key.
10. Menu reset
•
Pressing the x
•
B key causes the set to enter the menu ini-
tialization standby state.
•
When the following keys are all entered, the EEPROM
initialization (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.
initialization (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
> , FOLDER , MENU , x , z REC ,
HOLD
. ON , HOLD . OFF,
DIRECTNL ON,
and DIRECTNL OFF,
VOICE UP ON, VOICE UP OFF
•
If all tests end in success, “-ALLOK-” is displayed. If
initialization in the EEPROM is NG, “INIT. NG” appears.
initialization in the EEPROM is NG, “INIT. NG” appears.
•
Turn off the power to exit the test mode.
SLEEP
SOON
IN
SLEEP
(with HOLD
.
OFF status)
(with HOLD
.
ON status)
(LCD OFF)
any keys
any keys
x B
x B
2.0K
1.3K
:
:
BEEP
1.3K
1.3K
2.0K
.
>
(select),
(set)
x
x
x
x B
x B
OK
RTC
RTC
x
x B
oFF
FF
KEYiFF
KEY
x
x B
FF
BATT
BATT
BATT
BATT
DC jack
is inserted
is inserted
DC jack
is extracted
is extracted
x
x B
ON
LED
LED
x
x B
USB
OFF
VBUS
ON
VBUS
PC
LINK
HOLD
.
ON
x
Suspend
mode
mode
cut Vbus
cut Vbus
Vbus
on
x B
RST
MENU
KEY
PUSH
INIT
OK
ALL
x
All keys
are entered
are entered
In the case that
the initialization
and reset operation
end correctly.
the initialization
and reset operation
end correctly.
(blinking)
x B
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