Kenwood KDC-MP208 Service Manual page 15

• How to register the security code on the "Car Audio Passport" after replacement of the FRONT-END (A1)
with E2PROM (KDC-MP439 only)
Procedure
While pressing and holding [1] key and [3] key, reset-start
Press the [B.BOOST] key
Press and hold [ ] key for 1 second or longer
[FM] / [AM] / [ / ] key
Press and hold [ ] key for 3 seconds or longer
[FM] / [AM] / [ / ] key
Press and hold [ ] key for 3 seconds or longer
Reset, momentary power down, ACC OFF, Power OFF, panel removed Cancels the test mode.
Note: The security code in this model cannot be all-clear.
■ ROM data transfer
When replacing front-end (A1), this function is used to transfer E2PROM data (ROM correction, security and other data) to front-end (A1) to
E2PROM of to mother unit (X34-), used for saving data, and, after completing replacement of front-end (A1), to recover data from the E2PROM
of the mother unit (X34-), and for saving data to the new front-end (A1). Refer to "ROM data transfer processes" on the next page for details on
front-end (A1) replacement procedures and on the data to be transferred.
Procedure
While pressing and holding [1]
key and [3] keys, reset-start
Press [B.BOOST] key (MENU)
Press [ ] key or [ ] key
(In the above ROM READ
status), ■ [
] key for 2
seconds or longer
(In the above ROM WRT
status), ■ [
] key for
2 seconds or longer
(In every status of ROM data
[ ] transfer processing)
TEST MODE
Display
:
R O M R E A D
R O M R E A D
R O M W R T
R E A D
R E A D O K
R E A D O K 2
R E A D N G
W R T
W R T O K
W R T O K 1
W R T O K 2
W R T N G
:
KDC-MP208/MP238/MP238CR/MP239
KDC-MP3039/MP339/MP339S/MP439
Description
Enters the test mode
Enters the MENU mode.
Enters the security registration mode.
Inputs the code. FM: Number up / AM: Number down /
: Cursor to the left /
: Cursor to the right
"RE-ENTER" is displayed.
Inputs the code again. FM: Number up / AM: Number down /
: Cursor to the left / : Cursor to the right
"APPROVED" is displayed.
Description
All lights ON.
MENU mode
Front-end (A1) → Mother unit (X34-). Data transfer processing.
Mother unit (X34-) → Front-end (A1). Data transfer processing.
Front-end (A1) → Mother unit (X34-). ROM data is being transferred.
Front-end (A1) → Mother unit (X34-).
ROM correction transfer, security and other data is OK.
Front-end (A1) → Mother unit (X34-).
Transfer of security and other data is OK.
Front-end (A1) → Mother unit (X34-). ROM data transfer is NG.
Mother unit (X34-) → Front -end (A1). ROM data is being transferred.
Mother unit (X34-) → Front-end (A1).
ROM correction, security and other data transfer is OK.
Mother unit (X34-) → Front-end (A1).
ROM correction data transfer is OK.
Mother unit (X34-) → Front-end (A1).
Transfer of security and other data is OK.
Mother unit (X34-) → Front-end (A1). ROM data transfer is NG
Clear from ROM correction data transfer processing
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