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■ ROM data transfer
* This function is shown in the MENU only when the source is STANDBY and thus in reality it is operational only in the case of
STANDBY source.
Procedure
While pressing and holding
[SEARCH] key and [SRC]
keys, reset-start
Press [SEARCH] key (MENU)
Press [
] key or [
] key
(In the above ROM READ
status), ■ [
] key
(2 seconds)
(In the above ROM WRT
status), ■ [
] key
(2 seconds)
(In every status of ROM data
transfer processing), press
[SEARCH] key
This function is used, in case of front-end (A48x) failure, to transfer E2PROM data (ROM correction, security and other data)
inside of the front-end (A48x) to E2PROM (IC300) of the data saving mother unit (X34-), and this function is also used, after
the replacement of the front-end (A48x), to transfer the data that have been saved in the E2PROM (IC300) of the data saving
mother unit (X34-) to the new front-end (A48x).
Refer to the following "ROM Data Transfer Process" pages for the details of security and other data".
TEST MODE
Display
R
O
M
R
E
A
D
R
O
M
R
E
A
D
R
O
M
W
R
I
T
R
O
M
R
E
A
D
R
O
M
R
E
A
D
R
O
M
R
E
A
D
R
O
M
R
E
A
D
R
O
M
W
R
I
T
R
O
M
W
R
I
T
R
O
M
W
R
I
T
R
O
M
W
R
I
T
R
O
M
W
R
I
T
All lights ON.
MENU mode
Front-end (A48x) → Mother unit (X34-). Data transfer
processing.
Mother unit (X34-) → Front-end (A48x). Data transfer
E
processing.
Front-end (A48x) → Mother unit (X34-). ROM data is be-
ing transferred.
Front-end (A48x) → Mother unit (X34-).
O
K
ROM correction transfer, security and other data is OK.
Front-end (A48x) → Mother unit (X34-).
O
K
2
Transfer of security and other data is OK.
Front-end (A48x) → Mother unit (X34-). ROM data trans-
N
G
fer is NG.
Mother unit (X34-) → Front -end (A48x). ROM data is be-
E
ing transferred.
Mother unit (X34-) → Front-end (A48x).
E
O
K
ROM correction, security and other data transfer is OK.
Mother unit (X34-) → Front-end (A48x).
E
O
K
1
ROM correction data transfer is OK.
Mother unit (X34-) → Front-end (A48x).
E
O
K
2
Transfer of security and other data is OK.
Mother unit (X34-) → Front-end (A48x). ROM data trans-
E
N
G
fer is NG
Clear from ROM correction data transfer processing
KDC-BT6544U/BT6544UY
/BT7043U/BT742U
Description
19
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