Kenwood KD 770 D Service Manual

Page 2

BLOCK DIAGRAM

BLOCK DIAG RAM r
MAIN
moron
s 4 A88 v
QUARZ PLL
$3 CONTROLLER CONTROLLER Oil 12 IE4 P R1
START]
ll-TL-___l gggm
S 2 06 I» 9
spa
81 0819
D 33
Q 2 Q 14 010
JL LED sw LED 0 45 rpm

AC
LOGIC CONTROL
3. Input switches are described below.
SW. FUNCTlONS
START/STOP O lnitialized to STOP state when power is turned on.

Switches between START and STOP state at every one push.

O 4 seconds after END detection, the switch returns to STOP state (auto stop function).

0 When STOP button is pressed, braking operation is executed till the turntable rotational speed be-
comes below prescribed speed.

33/45 0 initialized to 33 1/3 r.p.m. when power is turned on.
Switches between 33 1/3 rpm. and 45 mode at every one push.

UP/DOWN O lnitialized to UP state when power is turned on.
I Switches between UP and DOWN state at every one push.

0 When END detection is operated, the tonearm returns to UP state. (auto up function)
* When power switch or AC line is turned off. the tonearm returns to UP state.

r Function of each input switch is independent.

j