Kenwood KDC 8021 Service Manual

Page 12

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KDC78021(K)]NT1P72 02.2.185:37 PM NH? 12

KDC-8021/M9021/X859

12

TEST MODE

Security items
1. Forced power-ON mode (all models)

Even when writing is permitted by the security function
(mask key), Power-on can be set for a 30 minute period
each time the reset key is pressed while holding down
the Q key and [4/8] keys. After 30 minutes elapses, can
only be restored by using reset.

. How to register the security code for EEPROM

(F/E) replacement (coded security models)

(1) Enter the test mode. (See "1. How to enter the test
mode")

(2) Press the [4/8] key to enter the MENU MODE.

(3) While "Security" is displayed, press and hold the
Track up or down key for a second to enter the secu-
rity registration mode.

(4) Enter the code using the FM/AM/Track up/Track
down keys.

FM key: Increments the number.

AM key: Decrements the number.

Track up key: Moves the cursor to the right.
Track down key: Moves the cursor to the left.

(5) Hold down the Track up key for at least 3 seconds
and the message, "RE-ENTER" appears, so once
again enter the code according to Step 4 above.

(6) Hold down the Track up key for at least 3 seconds,
and the message, "APPROVED" appears.

(7) Cancel test mode. (See, 2. How to cancel the test
mode.)

Note: All clear cannot be performed on the security
code for this model.

. Simple way to clear the security code (K type only)

(1) During code request mode, press the Track Up key
for at least 3 seconds while holding down the AUTO
key. (---- will disappear)

(2) Enter, "KOAR" with the remote controller as described
below. (Same as on 01 model.)
~ Press the remote controller 5 key twice, and press
the Track Up key. (Enters a K")

- Press the remote controller 2 key three times, and
press the Track Up key. (Enters a "0)

~ Press the remote controller 2 key once, and press
the Track Up key. (Enters an "A")

~ Press the remote controller 7 key twice, and press
the Track Up key. (Enters an "R)

(3) Security function is canceled and unit sets to All-Off
mode.

(4) Code request mode appears if a mistake was made in
entering the numbers.

. 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 [4/8] key to enter the Mask key registration
mode. "TRANSMIT1" should be displayed now.
The display at this time should show "< >" in place of
"[1"-

(3) Point the Mask key remote toward the light sensor,
and press and hold its key for more than 0.5 second.

(4) When "TRANSMITZ" is displayed, press and hold the
key on the Mask key remote for more than 0.5 sec-
ond again. The first and second counter codes are
not compared 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.

. Method of initializing the Mask key

(How to reset the unit from the Mask key approved condi-

tion 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
request 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 sec-
onds 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.

. Method of clearing all Mask key-related data

(1) Enter the test mode. (See "1. How to enter the test
mode")

(2) Press the [4/8] 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 sta-
tus