HCD-C770/C990
34
34
7-3.
BLOCK DIAGRAM – AUDIO OUT, PANEL Section –
• SIGNAL PATH
: AUDIO
HP-MUTE
P-MUTE
HP-SW
POWER AMP
IC301
D105
J900
J401
(+)
(–)
STREAM PROCESSOR
IC305
LATCH1
INIT
PGMUTE
SCDT
SHIFT
OVER LOAD
DETECT
Q109, 110
MUTING
CONTROL
Q902
POWER ON
MUTING
Q192
D180
D181
D192
32V
FRONT
L
POWER AMP
IC304
60 FL-DATA
57 FL-CLK
61 FL-CS
56 FL-MUTE
D102
(+)
(–)
OVER LOAD
DETECT
Q103, 104
FRONT
R
POWER AMP
IC307
D103
(+)
(–)
STREAM PROCESSOR
IC308
SYSTEM CONTROLLER
IC901 (2/3)
FL DRIVER
IC802
OVER LOAD
DETECT
Q105, 106
POWER AMP
IC306
D106
(+)
(–)
OVER LOAD
DETECT
Q111, 112
POWER AMP
IC309
D104
(+)
(–)
STREAM PROCESSOR
IC310
OVER LOAD
DETECT
Q107, 108
REAR
L
POWER AMP
IC311
D101
(+)
(–)
OVER LOAD
DETECT
Q101, 102
REAR
R
CENTER
SPEAKER
WOOFER
PHONES
D1
SCK
AU-MUTE
DAS-CS
BCKO
LRCKO
LATCH2
INIT
PGMUTE
INIT
PGMUTE
SCDT
SHIFT
LATCH1
LATCH2
LATCH3
SCDT
SHIFT
D2
SCK
BCKO
LRCKO
LATCH3
INIT
PGMUTE
SCDT
SHIFT
D3
SCK
BCKO
LRCKO
D4
SCK
BCKO
LRCKO
D/A CONVERTER
IC608
DIGDI
DIGCLK
C818, R840
MUTING
Q207, 208
FLUORESCENT
INDICATOR TUBE
FL801
MUTING CONTROL
Q900
MUTING
Q900, 901
SIRCS DETECT
Q906, 907
PROTECT DETECT
Q113, 114
J205 (2/4)
VIDEO 1
AUDIO OUT
L
R
P-MUTE
RSTAD
D1 – D4, SCK,
BCKO, LRCKO
X300
49.152MHz
HP-SW
HP-MUTE
AU-MUTE
DAS-CS
OSC
LED DRIVER
IC801
D801 – 805
I2CDATA,
I2CCLK, I2HLP
ZIVARESET
DISC1 – DISC5
ROTARY
ENCODER
S800
DISC INSERT
DETECT
Q914
VOLUME
SCAN SELECT
KEY0, KEY2
S801 – 805,
S811 – 825
S201
I2HLP
I2CCLK
I2CDATA
INTERLACE
SELECTABLE
X901
20MHz