Panasonic KX-MB771GR Service Manual page 234

KX-MB771GR
6
A
B
C
+3.3V
D
+3.3V
+1.2V
E
F
7
+24V
D300
1
2
R310 3
F51.1k
4
R311 R312
1.5k 22k
+3.3V
C395 K1u
IC305
1
BST DRVH
2
VCC PHASE
3
ISET DRVL
4
COMP GND
5
FS/SYNC VSENSE
+5VD +7V +24V
8
+3.3V
L372 10u
C375 Z0.33u
IC302
9
8
SW BST
7
VIN PAD FB
6
ROSC COMP
5
GND SS/EN
Q301
Q300
B
C
E
+1.2V
L374
4.9u
Q303
1 8
R359
2 7
10 1
3 6
9
R360
8 1
4 5
7
6
L399
0
DG
R450 R451 0
0
C488 0 C490 0
R452 0
C491 0
KX-MB771GR SCHEMATIC DIAGRAM (MAIN BOARD No.1) (3/3)
234
9
3/3
1
-3