Kenwood R-SE7 Service Manual Download Page 4

Page: 4 / 27

R-SE7/SE-7

(

)

CIRCUIT DESCRIPTION

3. DESTINATION LIST OF TUNER

3-1 Destination List of Tuner

4. TEST MODE

4-1. Initializing

The system is initialized when the power is turned on while
pressing the on/standby key.

(1) Contents of operation

All the functions are initialized.

4-2. AMP test mode using main unit's keys

4-2-1. Entering the AMP test mode

Turn on the power while pressing the BAND key.

4-2-2. Canceling the AMP test mode

By turning off the power, the system is initialized and the

test mode is canceled.

4-2-3. Contents of AMP test mode

(1) Automatic on/standby ON

The POWER ON state is entered whenever the power is

turned on while pressing the BAND key. All functions are
then initialized and activated in the all-lighting mode.

Sub-clock oscillation diagnosis function

The oscillation diagnosis (existence of oscillation and
measurement of period) of a sub-clock is performed
before the test mode is entered. If the diagnosis result is
OK, the system enters the test mode.
If the diagnosis result is NG, the oscillation of the sub-
clock is diagnosed again. If the result is OK, the system
enters the test mode. If the diagnosis result is continu-
ously NG five times, the system stops with ERR 1 and
ERR 2 displayed.

(2) All-lighting mode

All the fluorescent display indicators and LED lamps light

when the power is turned on while pressing the BAND
key.

After that, the all-lighting mode is canceled when any

main unit's key is pressed. The normal display obtained
when the selector is set to TUNER then appears.

(3) Others

The AMP test mode is not terminated even if the selector

is set to positions other than TUNER.

In the AMP test mode, the muting during mode selection

is not controlled. However, the operation during the
power-on sequence is the same as the normal operation.

The SP protection operation is also the same as the nor-

mal operation.

In the AMP test mode using main unit's keys, the keys

below provide a special operation according to the posi-
tion where the selector is set. The main unit's keys
except described below and the rotary encoder provide
the normal operation.

(4) When selector is set to TUNER

Key

Operation

PURE A key

Increments the P.CALL every time this
key is pressed.

N.B. key

Decrement the P.CALL every time this
key is pressed.

ENTER key

Selects the display cyclically in the order
below every time this key is pressed.

Write data in the unused area of E2PROM, then read the
written data. If the read data is the same as the written
data, "RAM OK" is displayed in the fluorescent display
indicator. If the former is different from the latter, "RAM
NG" is displayed.

Set the TUNER ATT to OFF and display the S level in

hexadecimal when the ENTER key is pressed. ("ATT
OFF **" is displayed in the fluorescent display indicator.)

Set the TUNER ATT to ON and display the S level in

hexadecimal when the ENTER key is pressed. ("ATT ON
**" is displayed in the fluorescent display indicator.)

* The special display using the ENTER key is continued until
the next operation is carried out. (**: S LEVEL)
When keys other than ENTER are pressed in items

above, the TUNER ATT is set to OFF and the normal display
appears. The operation corresponding to the key that has
been pressed is performed in this case.

(5) When selector is set to positions other than TUNER

Desti-

Receive

Channel

PLL

DIODE SW

nation

BAND frequency

space

reference DSW1 DSW2

range

frequency D518 D519