Panasonic KX-MB783BR Service Manual page 238

KX-MB783BR
6
A
B
C
D
E
F
7
+24V
D300
R310
F51.1k
R311
1.5k
+3.3V
C395
IC305
1 BST
2 VCC
3 ISET
4 COMP
5 FS/SYNC
+3.3V
+3.3V
+7V
+1.2V +5VD
8
+3.3V
L372 10u
C375 Z0.33u
IC302
9
1 8
SW BST
2 7
VIN PAD FB
3 6
ROSC COMP
4 5
GND SS/EN
Q301
Q300
R312
B
C
22k
E
+1.2V
L374
K1u
4.9u
Q303
1 8
R359
1
2 7
10
DRVH
9 3 6
PHASE
R360
8
DRVL 4 5
7 1
GND
6
VSENSE
DG
R450 R451
0
+24V
C488 0 C490
R452
C491
KX-MB783BR SCHEMATIC DIAGRAM (MAIN BOARD No.1) (3/3)
238
9
L399
0
0
0
0
0
3/3
1
-3