Test Mode - Sony ICD-MX20DR9 Service Manual

ICD-MX20DR9

[Test Mode]

The following checks can be implemented using the Test Mode.
How to Enter the Test Mode
To enter the test mode, turn ON the HOLD switch while pressing
the MENU key and VOLUME + key at the same time with the
power on.
How to Exit the Test Mode
Exit the test mode by turning OFF the power.
Initial Status of the Test Mode
When the machine enters the test mode, the LCD display appears
as shown below.
Select the desired item by using the > / . key, and press the
Nx button to set the selection.
Selecting items.
setting by the
button
10
SECTION 3
TEST MODE
1. Version test
• Version of the respective modules are verified.
F/W version of
CPU (DSP block)
2. Key Chk + Format test
• Perform the key check by pressing the keys. The NAND
formatting (deleting all events) and the default settings of the
menus (default language and LCD contrast remain unchanged)
are executed at the same time.
Nx / > / . / MENU /
*
STOP x / VOLUME + / VOLUME – / DIVIDE / A-B
DPC (ON/OFF) / VOICE UP (ON/OFF) /
DIRECTNT (ON/OFF) / HOLD
3. Language test
• Check the language and select the language. (Default language
is Japanese.)
• Press VOLUME + button for English (ENG).
• Press A-B
4. Loop Back test
Execute the DSP LOOP BACK.
5. Beep test
• Beep sound of 1.3 kHz or 2 kHz is output.
Press the Nx key to start outputting and press the x button
•
to stop.
6. LCD Cont test
• Adjust the LCD contrast.
Default value is 07.
• Adjust the LCD contrast using the > / . key.
7. RTC Int test
• Perform the self test of the RTC..
8. Battery test
• The detected A/D value of the battery remaining power is
checked.
F/W version of
CPU (ARM block)
F/W version of
SUB-SPU
The checked key is display.
Total of 15 keys* are counted.
When all checks are completed,
the back-Light turns on for 0.5
seconds
The NAND formatting
(deleting all events)
and the befault settings
of the menus are completed.
/ REC/PAUSE zX /
button for Japanese (JPN).
/