Kenwood KDC-138 Service Manual page 25

Press [ ] key. (Exit ROM data transfer mode.)
Turn power off.
Remove front-end (A1).
r
Mother unit (X34-)
FRONT-
END (A1)
Install new front-end (A1).
No ROM correction or other data status.
t
Mother unit (X34-)
FRONT-
END (A1)
E2PROM
ROM DATA TRANSFER PROCESSES
E2PROM
E2PROM
X34-56xx-xx
Turn power on.
Press and hold the [1] and [3] keys press reset button. (Enter
the system in the test mode.)
Press [B.BOOST] key. (Enter the system in ROM data trans-
fer mode.)
Press [ ] (or [ ].) (Select WRT)
Press [ ] key for 1 second or longer. (Data transfer)
y
Mother unit (X34-)
FRONT-
END (A1)
E2PROM
WRT OK
Press [ ] key. (Exit ROM data transfer mode.)
E2PROM
W-OK
25