STR-DE235
– 9 –
– 10 –
4-2.
BLOCK DIAGRAM – MAIN Section (2/2) –
POWER AMP
IC701 (1/2)
05
B
(Page 8)
•
SIGNAL PATH
: TUNER (FM)
LCH
SP-RLY,
SURR-RLY,
PROTECT
SP-RL
Y
SURR-RL
Y
PROTECT
PRE
DRIVE
DRIVER
CENTER
REAR
TM601
TM701
L
R
BASS BOOST
FILTER AMP
Q452
BASS BOOST
SWITCH
Q401
FINAL
DRIVER
Q703, 704
OVER LOAD
DETECT
Q720
BIAS
Q701, 702
NF
J253
MIX
AUDIO OUT
(Page 8)
E
S701–3–1
PHONES
J741
+VOUT1
–VOUT1
IN1
NF1
–1
5
6
3
2
POWER AMP
IC702 (1/2)
C
(Page 8)
F
(Page 11)
RCH
BASS
BOOST
PRE
DRIVE
DRIVER
BASS BOOST
FILTER AMP
Q402
BASS BOOST
SWITCH
Q451
FINAL
DRIVER
Q753, 754
OVER LOAD
DETECT
Q770
BIAS
Q751, 752
NF
+VOUT1
–VOUT1
IN1
NF1
5
6
3
2
POWER AMP
IC701 (2/2)
A
(Page 8)
REAR
PRE
DRIVE
DRIVER
FINAL
DRIVER
Q653, 654
OVER LOAD
DETECT
Q670
BIAS
Q651, 652
NF
+VOUT2
–VOUT2
IN2
NF2
9
8
11
12
POWER AMP
IC702 (2/2)
PRE
DRIVE
DRIVER
FINAL
DRIVER
Q603, 604
OVER LOAD
DETECT
Q620
BIAS
Q601, 602
NF
+VOUT2
–VOUT2
IN2
NF2
9
8
11
12
D
(Page 8)
CENTER
PROTECT
SWITCH
Q721 – 723
D721
SPEAKER PROTECT
RELAY DRIVE
Q610
RY601
–2
–2
SPEAKER PROTECT
RELAY DRIVE
Q710
RY701
–1
D725
D728
D723
D311, 312
D203
+
+
+
+
+
S701–4–2
SPEAKERS A
Ø
ON
ø
OFF
ON
OFF
S701–3
SPEAKERS A
Ø
ON
ø
OFF
S701–1–1
SPEAKERS B
Ø
ON
ø
OFF
S701–2
SPEAKERS A
Ø
ON
ø
OFF
ON
OFF
ON
OFF
S701–2–1
ON
OFF
S701–2–2
ON
OFF
OFF
ON
S701–1–2
SPEAKERS B
Ø
ON
ø
OFF
OFF
ON
A
A
R
B
B
S701–3–2
+
–
+
–
+
–
+
–
+
–
+
–
+
–
L
SPEAKERS FRONT
IMPEDANCE
USE 4 – 16
Ω
SPEAKERS
IMPEDANCE
USE 4 – 16
Ω
