Main Frame Section; Schematic Diagram; Digital Board (Pcb1) - Panasonic KX-FLB752CX Service Manual

2.3.

MAIN FRAME SECTION

3 SCHEMATIC DIAGRAM

3.1.

DIGITAL BOARD (PCB1)

TO SMPS
+24V
CN615
+24V 1
+24V 2
PG 3
PG 4
DG 5
DG 6
+5V 7
+5V 8
HTRON 9
PDET 10
TO HVPS
CN614
R769
+24V 1
2.2 (1W)
PG 2
DEV REM 3
CHG REM 4
LED 5
TRA CLK 6
DRUM 7
TOPCVR 8
REGIST 9
Q620
+5VD
+24V
Q619
Q618
Q617
L645 0
L646 0
L647 0
Q616
R722
R721 39K
+5VD
2.7K
R727
10K
+5VD
IC611 -2
5
7
Q621 6
+5VD
C750
Z0.1u
8 2
1
3
4
Q631 C774
IC611
Z0.1u
+5VD
R726
10K
5
Addition
POWER2
HTRCTL
+5VD
AIN0
R703
10K
+5VD
-1
POUT
PDET
DEV
CHG SENCTL0
TRS
SENCTL1
L640
DRUM
L641
TOPCVR PICKUP
L642
REGIST
KX-FLB752CX