11. Other specifications
• Automatic panel closing when a CD is inserted is inhib-
ited. (M&T model)
• Panel operation by turning power OFF/ON is inhibited.
(M&T model)
• Messages such as “CODE OFF” are not displayed when
power is turned ON.
• Pressing the ATT key opens or closes the panel. (M&T
model)
• Pressing the TI (AUTO) key during changer operation turns
2zone ON. 2zone can be turned OFF by pressing the TI
(AUTO) key again. The P/S dot lights while 2zone is ON.
• Pressing and holding the CLK key for a second in the ALL
OFF status the Mask Key (security) write mode.
• Security-related information
1. Forced Power ON mode (All models)
Even when the security (Mask key) is approved, resetting
the unit while holding the ATT and Preset 4 keys makes it
possible to turn the power ON for 30 minutes.
After 30 minutes have elapsed, it is not possible to return
to the previous condition unless the unit is reset again.
2. Method of registration of the security code after
EEPROM (Tuner Unit Ass'y) replacement (Code
security model)
1) Enter the test mode. (See 1. How to enter the test mode)
2) Press the CLK key to enter the security registration
mode.
3) Enter the code using the Preset 1/2/3/4 keys.
Example : To enter “3510”
• Press the Preset 1 key 4 times.
• Press the Preset 2 key 6 times.
• Press the Preset 3 key twice.
• Press the Preset 4 key once.
4) Hold down the DISP key for at least 3 seconds and the
message, “RE-ENTER” appears, so once again enter
the code according to step 3) above.
5) Press and hold the DISP key for 3 seconds until “AP-
PROVED” is displayed.
6) Exit from the test mode. (See 2. How to exit from the
test mode)
(Note) All Clear is not applicable to the security code of
this model.
3. Method of writing the Mask key while the
EEPROM is in the initial status
1) Enter the test mode. (See 1. How to enter the test mode)
2) Press the CLK key to enter the Mask key registration
mode. “TRANSMIT1” should be displayed now. The dis-
play at this time should show “< >” in place of “ [ ] ”.
3) Point the Mask key remote toward the light sensor, and
press and hold its key for more than 0.5 second.
4) When “TRANSMIT2” is displayed, press and hold the
key on the Mask key remote for more than 0.5 second
again. The first and second counter codes are not com-
pared at this time.
5) When “APPROVED” is displayed, the write operation is
complete. Now the demonstration mode is initiated and
the test mode is terminated.
(Note) In the same way as previous models, if 30 minutes
have elapsed with no code written, an error occurs
and the power is turned OFF.
4. Method of initializing the Mask key (How to
reset the unit from the Mask key approved
condition to the factory condition)
1) Enter the test mode. (See 1. How to enter the test mode)
2) “TRANSMIT1” is displayed and the Mask key entry re-
quest mode is initiated. The display at this time should
show “
✽ ✽
” in place of “ [ ] ”.
3) Press and hold the key on the Master key remote for
more than 3 seconds.
4) When “TRANSMIT2” is displayed, press and hold the
key on the Master key remote for more than 3 seconds
again.
5) When “APPROVED” is displayed, the Mask key is
cleared, the demonstration mode is initiated, the test
mode is terminated and the unit returns to the factory
condition.
5. Method of clearing all Mask key-related data
1) Enter the test mode. (See 1. How to enter the test mode)
2) Press the CLK key to enter the Mask key registration
mode. “TRANSMIT1” should be displayed now.
3) Point the Master key remote toward the light sensor, and
press and hold its key for more than 3 seconds (until the
level display shows the full condition).
4) When “TRANSMIT2” is displayed, hold the key on the
Mask key remote for more than 3 seconds again. If
“TRANSMIT1” is displayed in place of “TRANSMIT2”,
restart the procedure from step 3).
5) When “APPROVED” is displayed, all security data is
cleared and the unit returns to the condition before Mask
key writing with the EEPROM in the initial status.
9
KDC-V7521/Y
TEST MODE
Summary of Contents for KDC-V7521/Y
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