Test Mode - Kenwood KDC-MP4028 Service Manual
Cd receiver
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Also See for KDC-MP4028:
- Instruction manual (45 pages) ,
- Service manual (6 pages) ,
- Instruction manual (108 pages)
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KDC-MP4028/MP428/MP6029
How to enter the test mode
While simultaneously pressing "1" and "3" keys, press "RE-
SET" button.
How to release the test mode
Press "RESET" button. (The release cannot be achieved in
the conditions of POWER OFF and ACC OFF.)
Initial conditions of the test mode
• The source is "STANDBY".
• The displays all lit up.
• The volume is at –10dB (The display shows "30").
• LOUD is "OFF".
• CRSC is "OFF".
• SYSTEM Q is "NATURAL".
• BEEP is sounded at all time with the key depressed for less
than 1 second.
• AUX is "ON".
• SWPRE is "SW".
Special displays when all indicator lights are lighted
When keys are pressed while all indicators for the STANDBY
sources are lighted, the following displays will appear.
"1"
Version display
key
(Display) Example : 416K -1.02
(416K : Development name, -1.02 : Version)
"2"
Serial number display (8 digits)
key
(Display) : x x x x x x x x
"3"
• When pressed for less than 1 second
key
: POWER ON time display
(Display) : PON x x x x x
* The display is cleared by pressing the key for more than
2 seconds.
"4"
• When pressed for less than 1 second
key
: CD operation time display
(Display) : CDT x x x x x
* The display is cleared by pressing the key for more than
2 seconds.
10
TEST MODE
MAX 65,535 (hours)
MAX 65,535 (hours)
"5"
• When pressed for less than 1 second
key
: CD EJECT number display
(Display) : EJC x x x x x
* The display is cleared by pressing the key for more than
2 seconds.
"6"
• When pressed for less than 1 second
key
: Panel open/close number display
(Display) : PC x x x x x x
* The display is cleared by pressing the key for more than
2 seconds.
"
"
• When pressed for less than 1 second
key
: CD mechanism error log display
(Display) : I2C_OK_ _ → ERR_1-xx → ERR_2-xx →
ERR_3-xx → All lights light up
I2C_NG_ _ → ERR_1-xx → ERR_2-xx →
ERR_3-xx → All lights light up
("ERR_1-xx" is the most recent error.)
Communication OK : I2C_OK_ _
Communication error : I2C_NG_ _
Communication error not detected
: ERR_n – – – (n : 1~3)
Communication error detected
: ERR_n-xx (n : 1~3 xx : Error code)
* The display is cleared by pressing the key for more than
2 seconds.
MAX 65,535 (times)
MAX 65,535 (times)
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