Kenwood DPX502 Service Manual page 12

DPX502/502U/502UY
DPX-MP5100U
● Clearing backup/installer memory, CD mecha-
nism information, service information and DC
offset error detection information (E2PROM data
clearing)
1. While pressing the [EQ] key and [ATT] key, reset-start
to start backup/installer memory data, CD mechanism
information, service information and DC offset error
detection information initialization.
(While "– – – –" is being displayed, power can be ON for
30 minutes.)
[CD mechanism information]
• Displays I2C communication condition
• Displays CD mechanism error log
• Displays CD loading error data
• Displays CD ejection error data
• Displays CD time code error count data (missing count)
• Displays CD time code error count data (count not
updated)
[Service information]
• Displays power ON time is displayed
• Displays CD operation time
• Displays number of CD EJECT times
• Displays number of times panel was opened/closed
• Displays forced Power OFF data
[DC offset error detection information]
• DC offset error detection display 1
• DC offset error detection display 2
2. When initialization is complete, the following display will
be made.
Normal completion
C D _ : A U _
Abnormal ending 1 : backup/installer memory initialization
: NG
C D _ : A U _
12
TEST MODE
_
_
Abnormal ending 2 : CD mechanism information/Service
infor mation/DC offset error detection infor mation
initialization : NG
C D _ : A U _
Abnormal ending 3 : All initialization : NG
C D _ : A U _
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. (The last screen will
not be retained.)
(Note) In this mode, the DC offset error detection display
"PROTECT" is not shown.
● Clearing DC offset error detection information
(E2PROM data clearing)
1. Press and hold [3] and [6] keys and reset-start to go into
the DC offset error display mode.
(While "– – – –" is being displayed, power can be ON for
30 minutes.)
2. While in STANDBY source, the current overall DC offset
error detection condition is displayed.
When not detected: "DC_ _OK_ _" : None of capacitor
leak, improper connection, etc. has been detected.
When detected: "DC_ _ERR_" : Any one of capacitor leak,
improper connection, etc. has been detected.
3. Use the following procedure to check the details of DC
offset error detection information.
_