Onkyo TX-L55 Service Manual page 6

A
BLOCK DIAGRAM
MUTE
1
MUTE
Q5001 Q5001 Q5101
MODULATOR DRIVER
TC2001 TP2150B
Q5001 Q5001 Q5101
DRIVER
MODULATOR
TC2001 TP2150B
Q5001 Q5001 Q5101
DRIVER
MODULATOR
2
TC2001 TP2150B
P4351
2
6
5
1
P4352
3
2 RI
1
3
Q7001
MAIN MICROPROCESSOR
MPD784225YGC
-XXX-8BT
Q801
U8701
SUB MICROPROCESSOR
MPD780232GC
-091-8BT
PIC-37143TC5
4
Q802
FL TUBE
HFA-12SM50T
D TYPE ONLY
5
Q2203
VIDEO
ENCODER
TA1270BF
B
KEY
LED
VOLUME
Q2202
LA7106M
+6dB
C
5 P4602
4
2
3 HEAD PHONE
7
8
1
P5512 EXCEPT D TYPE
P5511
D TYPE ONLY
FRONT L/R
+/-B
MAIN AMP
+5V
+/-7V
DRIVER
SELECTOR
SURR L/R
+5V +/-12V
TUNER AUDIO
P5501
+/-5V
VIDEO
C/ SURR B
FLAC
+9V
VIDEO
-36V
D TYPE ONLY
-VP
+3.3V
DSP
+5V
DSP
+2.5V
DSP
P5511
SPEAKER B
+5.6V
STANDBY
D TYPE ONLY
TX-L55/LR552
D
4 2 1
2
5
1
6 P9301B
7
AC_CABLE
8
9
10
11
12
13
14
15
16
17
T9001
5 4
9 1