Kenwood KDCX 8009 U Service Manual

Page 22

KDC- M P738U/W7541 U
/W7541UY/X792/X8009U

22

TEST MODE

0 Clearing backup / installer memory & CD mech-

anism information & service information & DC
offset error detection information
(Clear E2PROM data in the front end)

. While pressing and holding the [FNC] and [ATI] keys, re-

set-start to start initializing the backup/installer memory

data, CD mechanism information, service information

and DC offset error detection information.

(While ----" is being displayed, power can be ON for 30

minutes.)

[CD mechanism information]

0 Displays I2C communication condition

' Displays CD mechanism error log

0 Displays CD loading error data.

U Displays CD ejection error data.

' Displays CD time code error count data (missing
count).

U Displays CD time code error count data (count not up-
dated).

[Service Information]

- Displays power ON time is displayed.

0 Displays CD operation time.

0 Displays number of CD EJECT times.

0 Displays number of times panel was opened/closed.

- Displays forced Power OFF data.

[DC offset error detection information]

0 DC offset error detection display 1

0 DC offset error detection display 2

. After the initialization process is completed, the following

is displayed.
When successfully completed
E2P70LR: O

When finished but unsuccessful: Initialization NG

E2P70LR: X

. In this mode, even if the specified time has passed, the

backup memory items are not written into E2PROM.

. This mode is cancelled by resetting. (The last screen will

not be retained.)
(Note) In this mode, the DC error detection display, Pro-
tect" is not shown.

0 Clearing DC offset error detection information

(Clear E2PROM data in the front end)
. 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 DC offset error
detection condition is displayed.
DC offset error detection display 1 (To show such detec-
Upper tion as the improper connection, and other detection)
row (Display) DCLOK, (not detected)
ERR (Improper connection or other error
is detected.)
DC offset error detection display 2 (To show the number
of capacitor leaks.)
Middle (Display) DC270i (notdetected)
row 1 (Leak Is detected once.)
2 (Leak is detected twice.)
3 (Leak is detected 3 times.)
4 (Leak is detected 4 times or more.)

3. While the DC offset error detection condition is being

displayed as above, press and hold [1] key for 2 seconds
to clear the information about the improper connection,
and other detection. Press and hold [2] key for 2 seconds
to clear the information about the number of capacitor
leaks. (Clear E2PROM)

. DC offset error display mode is cancelled by resetting.
(The last screen will not be retained.)
(Note) In this mode, the DC offset error detection display,
Protect is not shown.

0 FM/AM channel space switching (K/ M type FM

(50k<->200k), AM (gm-non)

I While power is OFF, press and hold [1] and [5] keys, and

press [SRC] key to power ON.

0 Security
- How to enter the forced POWER ON mode (all models)

While 7 7 7 7 is being displayed, while simultaneously
pressing [FNC] key and [4] key, press [RESE'I] button,
With this, it is possible to turn the power on for 30 min-
utes only.

- How to register the security code on the Car Audio

Passport" sheet after replacing EZPROM (code security

models)

1. Enter the test mode. (Refer to How to enter the test
mode")

2. Press the [FNC] key briefly to make the multi-function
display and press the [NI] key briefly to enter the