Power Amp; Led Drive - Panasonic SA-HT280 Service Manual

(R4)
Q505
(Q506)
MUTING
AUDIO
SUB WOOFER
Q554
MUTING
C3
Q551
(Q552)
MUTING
NJM4580DD
SL3
(SR3)
IC652
BUFFER
AMP
B
4~7,
9~15
16
+B10 V
DD

LED DRIVE

D912
V
SS
1
32 18
33~48 49~58
D908
FL901 FL DISPLAY
L4 NJM2060D L5
(R5)
IC602
BUFFER
AMP
NJM2060D
C4
IC602
BUFFER
AMP
MUTING
OUT
D617
NJM2060D
IC602
BUFFER
AMP
SL4
(SR4)
+B8
D931~942
(PHONO/TUNER/CD/
DVD/TV/VCR/
TAPE MONITOR/SFC/
DIGITAL INPUT/SURROUND/
STEREO)
Q0~11
BU2090A
IC903
Q604
DATA CLK
LIMITTER
2 3
17 64
M38B57M6141F
IC901
SYSTEM CONTROL / FL DRIVE
59
9
GND
14
+B11
24
(21)
22
Q553
17
VD
20
10
OVERDET
12
DISP
D605
RSN310R36-P
D655

POWER AMP

10
OVERDET
14
+B11
24
22
(21)
D667,668
17
VD
20
9
-B4
GND
12
DISP
3 4 5
25
1,2
KEY
SWITCH
RSN310R36-P
IC601
19
POWER AMP
Reg.
2
+B12
D601
5
+B11
1
(7)
4
15
-B3
REG.
D602
6
-B3
3
Q651,652
-B4
RELAY
16
RLY DRIVE
CONT.
8
AC
OVER-
DET
IC651
19
Reg.
2
+B12
D651
5
+B11
1
4
(7)
15
-B3
REG.
D652
6
-B3
3
-B4
16
RLY
8
AC
Q605
30 31 29
SWITCH-
ING
RLY2
AC