SONY ICDP28
Manual de Servicio

ICD-P28

9. USB test � When the menu starts the USB self-check, either presence or absence of the Vbus is judged. (Vbus is present: �VBUS: ON�, Vbus is absent: �VBUS: OFF�) � 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 causes the set to move to the suspend state. Turning off the Vbus causes the set to return to the test menu. When Vbus is supplied with the menu displayed, the key will be inoperative. Be sure to press x�B key before supplying.

11. Menu reset � Pressing the x�B key causes the set to enter the menu initialization standby state. � Once all the keys below are input in this condition, the EEPROM will be initialized (The settings in the menu and the user name will be defaulted.). At the same time, the WakeUp signal is checked, too. � Check keys (in any order of their inputs) FOLDER , DIVIDE , DISPLAY , MENU , MIC SENS , ERASE , STOP , REC/STOP , PAUSE , PLAY/STOP (ENTER) , > , . , HOLD on, HOLD off (All is normally ended: �ALLOK�/NG in initialization write to EEPROM: INIT. NG) � Turn the power off in order to exit this mode.

x�B
OFF

VBUS on VBUS
STOP

USB

Cut VBUS
ON RST

x�B
KEY

After input all keys PUSH

VBUS
HOLD ON

MENU
STOP

Cut VBUS
PC

LINK Suspend mode

INIT (Blink)

10. Key durability test � Input of x�B key causes the counter to be �- - - - - -�, entering the test waiting mode. Input of x�B key causes the counter to be �000000�, entering the key durability test mode. In this mode, all key inputs and ON and OFF operations of the slide switch are counted with a count display. Turn the power off in order to exit this mode.

Case of initial setting and reset operated normal end.

Ok

ALL

Key endurance test mode x�B
KEY KEY

x�B
KEY

COUNT
STOP

------

00 00 00 any keys or slid switchs on/off

KEY

00 00 01

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