Kenwood KACPS 811 D Service Manual

Page 2

KAC-PS811D/X811D

BLOCK DIAGRAM

(xoamlorm)

(X0975790710) I

IND
LINE IN © -
O '- I I
FAN
35% @' II I O; _______________
© ll ,g I Im
I II Ica AV 33 MUTE COMPARATOR TIE/TED AMP
I BEITVEH LEVEL Wop; com
I I 073. 1-0
I I I I 09 IC2 78
fl § 05255 OVER DC
I I- - -jj:-___| I Mia my Ego 3;;ng
| ______ ___ _____ g
I n
|
I ms
062
Q W i2? 0 035m 35?
MW W W ESIIIE'E SEW IgggggE Emmet gggAeE Egg/ICE
025.26 I
IcIu 2930, ICIGI I
I ICIs 84110
REMOTEI m urCOM DDCDN I 5U 1
01067108 d 9 f

IcII
RESET ROM ACCRESS
Ic CORRECT SWITCH

COMPONENTS DESCRIPTION

0 PREAMPLIFIER UNIT (X08-4170-10)

SP OUT

P CON

BATT
GND

Rel. No Application / Function Operation / Condition / Compatibility
IC1 ISF Cutting super-low range of audio signal
IC2 (1/4~3/4) BRF Cutting bandwidth of audio signal
IC2 (4/4) INV Phase reversal of audio signal
IC3 OP amplifier Voltage amplification, Buffer
IC4 E-VOL Electronic volume
ICS LPF Cutting high-range of audio signal
IC6 LCD driver LCD driver
0 AUDIO UNIT (X09-5790-10)
Rel. No Application / Function Operation / Condition / Compatibility
IC1 Isolation amplifier Prevent noise from GND potential difference
IC2 (1/2) Triangular wave generation Reference signal for digitizing analog signal
IC2 (2/2) Error amplifier Error is compensated by the feedback from output
IC3 Comparator, Triangular wave generation Digitizing by comparison of analog signal and triangular wave