Sony ICD-P17 Service Manual page 10

ICD-P17
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.
x • B
USB
STOP
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.
x • B
KEY KEY
COUNT - - - - - -
STOP
10
VBUS on
OFF
VBUS
Cut VBUS
ON
VBUS
HOLD ON
Cut VBUS
PC
LINK
Suspend mode
Key endurance
test mode
x • B
KEY
00 00 00
any keys or
slid switchs on/off
KEY
00 00 01
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
RST
MENU PUSH
STOP
Case of initial setting
and reset operated
normal end.
After input all keys
KEY
INIT (Blink)
Ok
ALL