Sharp SD-AT1000 - Remote Control Operation; Battery Installation and Testing

– 19 –
SD-AT1000
Figure 19 BLOCK DIAGRAM (8/10)
+40V
R-CH – L-CH – L-CH + L-CH – R-CH – L-CH + R-CH + R-CH +
UCON_GND
M_+12V LIMIT FAN_CONT
SP_RLY
SUB_W–_IN
SUB_W+_IN
CENT+_IN
CENT–_IN
SR+_IN
SR–_IN
SL+_IN
SL–_IN
FL + FL – FR – FR + SL + SL – SR – SR +
SP__RLY
SP__RLY
SP_RLY
SP__RLY
3
2
1
1 BIT AMP
5
6
7
8
4
3
2
1
AC_RELAY
CENT –
CENTER
SUBWOOFER
CENT + WOOFER + WOOFER –
SURROND
FR+_IN
FR–_IN
FL–_IN
FL+_IN
FRONT
UCON_+5V PROTECT +B_CHECK
4 3 5
1
11
WOOFER +
WOOFER –
CEN +
CEN –
CENTER
6
7
8
10
9
11
12
5
SL +
SL –
SR +
SR –
FR +
FL +
FL –
FR –
2 1 3 4
SURROUND
FRONT
SUBWOOFER
7 6
324
1
10
65
17 18 19 20 21 22 23 24 25 26 27 28
TO 1-BIT AMP. SECTION
CNP531
TO MAIN SECTION
D887
D963
Q951
Q950
Q892
PC902
ZD937
IC306
TJM4558CD
OPE AMP.
BI931
CNS931
RL897
RL898
RL899
D954
D953
GD1N4004
D951
GD1N4004
D952
GD1N4004
D950
GD1N4004
IC937
AN77L05
VOLTAGE
REGULATOR
D891
D890
D889
PC901
T903
POWER TRANSFORMER
D947
SO889
SPEAKER
TERMINAL
VDD
VSS
+
+
–
–