Power Supply Descriptions; Main Unit Power Supply Condition - Panasonic KX-MB2230JT Service Manual

6.18.3. 24V Power Supply Descriptions
1. The switch circuit which turns off a +24V power supply at the time of Sleep mode.
6.18.4. 2.5V Power Supply Descriptions
1. IC803 is low dropout three-terminal regulator for SPT.

6.18.5. Main Unit Power Supply Condition

* Low Voltage Power Supply board (SMPS Board) output
P24VA
S3.3V
P24V(*1)
+24VA
+24VB
LVIN(*2)
+5VD
Power Supply
S5V
+3.3V
S3.3V
2.5VT
+1.2V
KX-MB2230JT/ KX-MB2270JT/ KX-MB2515JT/ KX-MB2545JT/ KX-MB2575JT/ DP-MB310JT
+24V
+24VA P24VB +24VB
Q807 Q813
S3.3V
Q806 Q812
+2.5V(SPT)
+5VD
+2.5VT
IC803
R823
3 2
VIN VOUT1
4
VOUT2
ADJ
1
Condition
Ready/Copy Power save
24V 24V
24V 24V
24V 24V
12V 12V
5V
5V
3.3V 3.3V
3.3V 3.3V
2.5V 2.5V
1.2V 1.2V
93
Sleep
12V-20V
0V
0V
6.5V-7.5V
5V 5V
5V 0V
3.3V
0V
2.5V
1.2V