Block Diagram - Amp Section - Sony HCD-GTZ2 Service Manual

5-3.

BLOCK DIAGRAM - AMP Section -

BASS AGC
F
(Page 14)
OUT
LINE AMP
D
IC252
(Page 14)
MUTING
Q402
SW OUT
LINE AMP BUFFER
E
IC253 Q431
(Page 14)
(GTZ3/GTZ3i)
MUTING
CONTROL
Q670
58
HCD-GTZ2/GTZ2i/GTZ3/GTZ3i
R-CH
OVER LOAD OVER LOAD
+
DETECT DETECT
Q801 Q803
POWER
AMP
IC800
D807
+
R-CH
OVER LOAD
DETECT
Q802
MUTING
Q430
51
SYSTEM CONTROLLER
IC401 (3/4)
+
R-CH
–1
–2
R-CH
RY800
R-CH
D632
PROTECT DETECT
Q806 – 809, 811
RELAY
DRIVE
Q804
53 44 50
15 15
J702
R-CH
PHONES
JK800
+
L
–
FRONT
– SPEAKER
R
+
FAN MOTOR
DRIVE
M101
M
Q693 – 695,
(FAN)
Q697
PROTECT
G
(Page 16)
LEVEL SHIFT
Q447
DC DETECT
H
(Page 16)
FAN MOTOR
M102
M
DRIVE
(FAN)
Q110 - 113
JK500
+
SUBWOOFER
–
RY500
RELAY
DRIVE AC CUT
Q500 DETECT
Q501
52
R-ch is omitted due to same as L-ch.
SIGNAL PATH
: AUDIO
HCD-GTZ2/GTZ2i/GTZ3/GTZ3i