KRC-2902Y
A/G
2
BLOCK DIAGRAM
IC1
KEY
PAN 5V
MUTE
B.U. DET.
B.U.
ACC
POWER IC
EQ. AMP.
CH ISO AMP
NC/MPX/
E-VOL.
FRONT Lch
FRONT Rch
REAR Lch
REAR Rch
J2
LCD DRIVER
LCD
MAIN
TAPE MECHA.
IC5
IC2
IC4, Q151
IC3,Q150
SP OUT
PAN IN SW
ACC DET.
P-CONT.
J2
IC1
FM+B
Q200,201
AM+B
Q202,203
AM BPF
FM BPF
Q320
Q50
Q350-353
Q53
SW 5V
Q54-57
COM+B
Q58-61
ILLUMI.
B.U. 5V
Q51,52
SYSTEM u-COM
RST SW
Q301
MOTOR SW
RST
Q260,261
ED1
Q1
FM ANT
AM ANT
RF GND
FM+B
AM+B
OSC GND
OSC GND
OSC GND
VT
PLL +B
IFC OUT
SDA
SCL
DIG GND
IF1+B
IF1 GND
S-METER
IF2 GND
SD
FM+B
SW5V
ACC DET
B.U. DET
SCL
MUTE
SDA
P CON
P
ANEL
HOLD
L CLK
L D
A
T
A
S
L D
A
T
A
L
FWD/REV
M
OTO
R
Rch
COM
Lch
MP IN
AM
MPX
OUT RR
OUT LR
OUT RF
LEVEL
SCL
SDA
OUT LF
STBY
MUTE
Rch
Lch
T-MUTE
FWD
REV
B.U.5V
B.U.
8V
B.U.
S MUTE
4
6
5
B.U.5V
AM+B
VDD 5V
P
A
CK IN
L RES
ANT CON
BEEP
SVR
AMP. STBY
SVR
AC GND (BEEP)
Rch
Lch
8V
RF GND
OSC GND
IF2 +B
AUDIO OUT
8V
S-METER
SD
PLL CLK
PLL DATA
PLAY
HEAD
R
L
55.6mV
B.U.5V
SW5V
8V
B.U.5V
AM: 170mV
FM: 400mV
TAPE
PACK IN
(FF/REW)
AMP. MUTE
FF/REW
B.U.5V
ILLUMI.
(X16- )
(X14- )
M
A1
5V
D200
P-CONT.
/ANT-CONT.
