Block Diagram - Amp Section - Aiwa CX-BK33 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-3. BLOCK DIAGRAM – AMP Section –
OUT-L
(Page 32) B
T E
L 1 3 9 4 2 2 9 6 5 1 3
LCD DRIVER
LIQUID CRYSTAL
DISPLAY
LCD1
INH, SHIFT SO,
CLK, LCK
(Page 32) E
w w w
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: TUNER
.
MUTING
Q525
R-CH
MUTING
CONTROL
Q527
39
IC001
DI 80 53 O-LCD_DATA
CL 79 54 O-LCD_CLK
CE 78 63 O-LCD_CE
INH 77
OSC 76 OSC
C105, R101
LED DRIVE
IC601
SHIFT SO
2 DATA
CLK
Q6 – Q2
3 CLK
LCK
4 LCK
Q10 15
Q8, Q9
Q7 12
x a o
y
i
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8
SWITCHING
Q618
R-CH
SWITCHING
Q619
R-CH
CURRENT
MIRROR
Q521, 523
PRE DRIVE CASCADE FINAL DRIVE
Q517 Q511, 513, 515 Q531, 533
BIAS
OVER LOAD
+
Q507, 509
R-CH
OVER CURRENT
R-CH
DETECT
Q013
Q Q
3 7 6 3
X901 X902
32.768kHz 5MHz
17 18 14 15
SYSTEM CONTROLLER
IC901 (3/3)
34
LED202
STANDBY/ON
LED259 – 255
(DISC INDICATOR 1 – 5)
LED203
i-Bass
LED DRIVE
LED261, 263, 264, 266
Q101, 102
(LCD BACK LIGHT)
LED301
(USB PORT ILLUMINATION)
u 1 6 3
.
33 33
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2 4
9 9 8
+VH
OUTPUT LEVEL
+
DETECT R-CH
Q612, 620, 621
+VL
– VH
OUTPUT LEVEL
DETECT
Q617, 622 – 624
– VL
+
R-CH
DETECT
Q505
TH501, 502
+
HOLD THERMAL
Q012 DETECT
Q610, 611
+
1 5 1 5 0 8 9 2 4
98
I-HEADPHONE
O-POWER
S311 – 325,
I-POWER_DOWN
327 – 342
I-KEY1, I-KEY2
RESET
ROTARY
MIDDLE ENCODER 95 I-KEY3
S300
ROTARY
VOLUME ENCODER 93 I-RE_VOL
S301
ROTARY
92 I-RE_BAS
BASS ENCODER
S302
ROTARY
TREBLE ENCODER 91 I-RE_TRE
S303
m
ROTARY
AMS/
ENCODER 94 I-RE_JOG
c o TUNING
S304
REMOTE CONTROL
RECEIVER 23 I-RMC
IC301
CX-BK33
2
9 9
M301
(FAN)
M M
FAN MOTOR
DRIVE
Q301 – 303
JK502
+
R-CH
SPEAKER
IMPEDANCE: 6Ω
+
L
–
+
R
–
RY501
RELAY DRIVE
Q530
J521
PHONES
MIXOUT-LR
(Page 32)
C
THERMAL DETECT
(Page 34)
G
9 8 2 9 9
POWER
POWER MONITOR
H (Page 34)
42
40
POWER_DOWN
41 J (Page 34)
RESET
16