![Kenwood KDC-BT838U - Radio / CD Скачать руководство пользователя страница 22](http://html.mh-extra.com/html/kenwood/kdc-bt838u-radio-cd/kdc-bt838u-radio-cd_service-manual_187172022.webp)
22
KDC-BT7539U/BT8041U
/BT8141UY/BT838U
∗
The purpose is to shut down audio output. Basically,
the logic sets the audio output system signal line when
in Standby source.
●
Key speci
fi
cation
• Other keys than eject and power keys are invalid.
●
Display speci
fi
cation
• Display the “PROTECT” string and blink all characters at
1Hz.
∗
Use the indication below with the highest priority (error
message), and maintain the error message even when
the source is changed.
Display
example
PROTECT
Blink
alternately
at 1Hz
●
Cancel Condition
• Press the Reset terminal on the main body. Or set Back-
up to OFF (Unplug and plug back in the DC connector).
The history is maintained (E2PROM data is saved).
• If DC error is detected during the capacitor leak detec-
tion period, the clearing the error by the reset is limited to
4 times.
The startup is inhibited for the 5th time and later reset.
(“PROTECT” display has to be blinked.)
●
Note while in the test mode
• While in the test mode, even if DC leak is detected, it is
not written into E2PROM.
When an error is detected, the display is enabled.
●
Other
• Function for checking and clearing data in E2PROM by a
given key shall be included. (Used at production dpt. and
service center, etc.)
The explanations for the following items are same as
those for the 06 model (U717, KDC-W7534U/W7534UY/
X890/X9533U).
Refer to the service manuals for these models.
• CD LOAD error detection,
• CD EJECT error detection
• Installer memory speci
fi
cations
• Backup memory speci
fi
cations
OTHER
DC OFFSET ERROR
PWIC_STBY
PWIC_MUTE
AUD_MUTE
2.0sec or more
1.5sec or more
0.7sec or more
0.8sec
1.0sec
50ms
or more
AUD_MUTE
(independent H
→
L
→
H)
Improper connection
detection period
Capacitor leak
detection period
Other (improper detection etc.)
detection period