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KDC-MP442U/MP6043U
/W5544U/W5644UY/X493
4. In case of applying a new ROM correction when front-
end (A48x) is replaced (There is ROM correction data.)
5. In case of applying a new ROM correction even when
front-end (A48x) is not replaced.
Mother unit (X34-)
FRONT-
END (A48x)
E2PROM
Install new E2PROM. (E2PROM that has been updated with
ROM correction)
Mother unit (X34-)
FRONT-
END (A48x)
E2PROM
22
ROM DATA TRANSFER PROCESSES
SYSTEM
μ-COM (IC302)
ROM correction
Tuner adjustment
Other
E2PROM circuit pattern
SYSTEM
μ-COM (IC302)
E2PROM
(IC300)
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)
[
]
Mother unit (X34-)
FRONT-
END (A48x)
E2PROM
System μ-COM (IC302) copies
the ROM correction data on the
mother unit (X34-) into E2PROM
in the front-end (A48x)
WRT OK1
In case of [4]
Press
(or
.) (Select READ)
[
]
[
]
Press
key for 1 second or longer. (Data transfer)
[
]
Mother unit (X34-)
FRONT-
END (A48x)
E2PROM
System μ-COM (IC302) copies
data in the front-end (A48x) into the
E2PROM on the mother unit (X34-).
(ROM correction and other data)
READ OK
SYSTEM
μ-COM (IC302)
E2PROM
(IC300)
W-O1
In case of [5]
Press [
] key. (Exit ROM
data transfer mode.)
SYSTEM
μ-COM (IC302)
E2PROM
(IC300)
R-OK
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