Kenwood KDC-MP628 Service Manual page 17

3. With all lights turned on and by pressing [AM] key for at
least 1 second, the data on the Flash ROM (4M) is initial-
ized. While erasing the data, "Data_Erase...." is displayed.
Note : Do not touch any key white this is in progress.
When erasing is complete, "Erase_OK!!" is displayed.
If "Erase_NG!!!!!!" is displayed, it was not possible to erase
the data on the Flash ROM (4M).
In this case, pressing [AM] key for at least 1 second again.
If it is the same, then there is an abnormality with the Flash
ROM.
● Other
• At Power ON, "CODE_OFF", "CODE_ON" displays will not
be made.
• When sourcing STANDBY, by pressing [AUTO] or [TI] key
for less than 1 second, GREEN/RED of the key illumination
is switched.
When doing this, the triangle illumination GREEN/RED is
switched along with the key illumination.
• When staring up in the test mode, LINE MUTE prohibition
time is set to 1 second instead of 10 seconds.
• While in the test mode, even when a DC offset error is de-
tected, the detection information will not be written to the
E2PROM.
• While in the test mode, even after an elapse of pre-set time,
the backup memory items will not be written to the E2PROM.
• Information Clear mode for Test Mode, backup/installer
memory, and CD mechanism error log.
In the DC offset error detection information clear mode,
DEMO mode operation will not be conducted.
Also, in the above mode, the menu of the STANDBY source
will not display DEMO ON/OFF switching items.
• While in the test mode, and at the same time, PM_DET of
the 60th terminal (System µ-com) is H, the following will
apply to the EJECT key, regardless of whether a disc is in
the unit or not.
Panel full OPEN/CLOSE is conducted with a push for less
than 1 second. (Protection time : 3 seconds)
As far as this item is concerned, eject will be achieved by
for at least 1 second push on the EJECT key.
● Clearing backup memory and installer memory
data (Clearing E2PROM data)
1. By pressing [ ] (NEXT) key and [ATT] key simultaneously,
reset and start the unit. This will start the initialization pro-
cesses for backup and installer memory data and the error
log information of the CD mechanism.
TEST MODE
2. When initialization is complete, the following display will be
made.
Normal completion
C D _ E 2 P _ _ _ :
A U D I O _ E 2 P :
Abnormal ending 1 : backup/installer memory initialization : NG
C D _ E 2 P _ _ _ :
A U D I O _ E 2 P :
Abnormal ending 2 : CD mechanism error log initialization : NG
C D _ E 2 P _ _ _ :
A U D I O _ E 2 P :
Abnormal ending 3 : All initialization : NG
C D _ E 2 P _ _ _ :
A U D I O _ E 2 P :
3. While in this mode, even after an elapse of a pre-set time,
no backup memory items will be written to the E2PROM.
4. This mode is released by resetting. (What was on the last
screen will not be retained.)
● Clearing DC offset error detection information
(E2PROM data clear)
1. While simultaneously pressing down on [3] and [6] keys,
reset the unit to enter the DC offset error display mode.
2. During STANDBY sourcing, the current DC offset error con-
ditions will be displayed.
When error detected : "DC_ERR"
When error not detected : "DC_OK"
3. While the error conditions are being displayed, press [AUTO]
or [TI] key for less than 1 second to clear the detection
information. (E2PROM clear)
4. DC offset error display mode is released by resetting. (What
was on the last screen will not be retained.)
KDC-MP628/MP7028/MP728
MP8029/W7031/W7031Y
17