17
KDC-237SA/237SAY
KDC-237SG/237SGY
4. In case of applying a new ROM correction when front-end
(A1) is replaced (There is ROM correction data.)
5. In case of applying a new ROM correction even when front-
end (A1) is not replaced.
FRONT-
END (A1)
E2PROM
SYSTEM
µ
-COM (IC1)
Mother unit (X34-)
E2PROM circuit pattern
q
ROM correction
Tuner adjustment
Other
FRONT-
END (A1)
E2PROM
E2PROM
SYSTEM
µ
-COM (IC1)
Mother unit (X34-)
w
Install new E2PROM. (E2PROM that has been updated with
ROM correction)
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. (ROM data System enters data trans-
fer mode.)
Press [
] (or [
].) (Select WRT)
Press [
] key for 1 second or longer. (Data transfer)
FRONT-
END (A1)
E2PROM
E2PROM
SYSTEM
µ
-COM (IC1)
Mother unit (X34-)
e
System
µ
-COM (IC1) copies
the ROM correction data on the
mother unit (X34-) into E2PROM
in the front-end (A1)
WRT OK1
W-O1
FRONT-
END (A1)
E2PROM
E2PROM
SYSTEM
µ
-COM (IC1)
Mother unit (X34-)
System
µ
-COM (IC1) copies
data in the front-end (A1) into the
E2PROM on the mother unit (X34-).
(ROM correction and other data)
READ OK
R-OK
Press [
] key. (Exit ROM
data transfer mode.)
Press [
] (or [
].) (Select READ)
Press [
] key for 1 second or longer. (Data transfer)
In case of [4]
In case of [5]
ROM DATA TRANSFER PROCESSES
