TX-8255
BLOCK DIAGRAM
TX-8255
SPA
SPB
THERM
PRO
-B1
E
+B1
UP
DOWN
STB
DATA
CL
TUNL
FLAC2
FLAC1
-VP
MUT
REMIN
FLDRST
FLDCS
FLDCLK
FLDSDO
+B3
-B3
TMUT
PLLCLK
PLLSDO
STEREO
SD
RDSCLK
RDSDAT
POW
+5.6V
+5V_MPU
+5V_CPU
+5V_CPU
+12V
-12V
TU-L
RI
IRIN
IROUT
K0
K1
K2
KEYINT0
KETINT1
KEYINT2
K3
KEYINT3
LEDSTBY
FLAC1
FLAC2
+5.6V
Q525, 526
Q581, 582
PROTECT
TO POWER AMP
120V
PRIMARY
THERMAL
SENSOR
Q855
VOLTAGE REGURATOR
PHONO EQULIZER
Q301
PHONO
OUT
IN
TAPE 1
CD
PLAY1
V1
LINE 1
/DVD IN
V2REC
V2PLAY
TUNER
PLAY2
REC2
OUT
IN
TAPE 2
LINE 2 IN
AUDIO IN / OUT
MOTOR DRIVE
Q481
DISPLAY CONTROL
MAIN MICROPROCESSOR
Q601
FL DRIVER
Q851
FL DISPLAY
Q852
FM/AM(RDS) TUNER UNIT
CONTROL KEYS
TO SELECTOR & PHONO EQ.
Q302
PHONO
CD
REC1
SELECTOR
240V
Q591
RELAY
DRIVE
Q592
RELAY
DRIVE
POWER AMP.
RL901
PRI. RELAY
F903
OUTLET
AC IN
P501
SPEAKERS
A
SPEAKERS
B
RL591
SP. A RELAY
RL592
SP. B RELAY
P503
PHONES
C916
D911
Q921
Q922
D920
F901
Q912
R641
VOLUME
Q491
MUTING
R393
BALANCE
F902
D920
T902
SUB TRANS.
C915
REMOTE SENSOR
RI
IR IN
IR OUT
STANDBY
Q402
R409
BASS
Q401
R415
TREBLE
S901
NC
THERMAL FUSE
T901
Q706
D915 - 918
MAIN TRANS.
+12V
-12V
M30622MWP
U851
M66005
TC9273CNG
TA7291S
NJM2068
NJM2068
F902 ---> MPP type only
F901 ---> MDC type only
P910
P901
Q701
C709
C704
BACKUP
A
1
2
3
4
5
B
C
D
E
F
G
H
