ICD-P110VTP - Sony Audio Service Manual (repair manual). Page 14

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11.  KEY proof-test
In this mode, counts are displayed by pressing a specific key.
It is possible to check how many times the key is pressed for KEY proof-test. Keys to be tested include slide switches (HOLD and MIC
SENS).
Counts are displayed to the upper limit of “999999” in decimal format.
However, the value will not be reset in this mode.
To exit from this mode, the power should be turned off.

Bx

Bx

Item selection display

The counter is incremented each time a key is pressed.

12.  MENU and FLASH MEMORY contents resetting
This mode initializes MENU information (including clock to be set) and all erases all the folders.
In order to complete this test, all the keys and all the slide switches must bee operated.
In control of keys and slide switches, their names a displayed.
The WAKE UP signal is also checked for tact keys. If any key or switch names are not displayed, the controls are faulty.
To exit from this mode, the power should be turned off.

Bx

Bx

Bx

Item selection display

Operating state

display

Operating state display

HOLD switch:

MIC SENS switch:

DISPLAY key:

VOL+ key:

VOL– key:

FOLDER key:

ERASE key:

DIVIDE key:

STOP key:

PLAY/STOP key:

.

  key:

>

  key:

REC/PAUSE key:

MENU key:

HOLD switch:

MIC SENS switch: