Circuit Operation (Handset); Charge Circuit; Signal Route - Panasonic KX-TG1711MEB Service Manual

3.1.4.

Circuit Operation (Handset)

[Changed from original section "4.4. Circuit Operation (Handset)"]
3.1.4.1.

Charge Circuit

Circuit Operation:
When charging the handset on the Base Unit, the charge current is as follows;
DC+  F1  R39  CHARGE+ (Base)  CHARGE+ (Handset)  Q101  F1  BATTERY+... Battery...
BATTERY-  R102  GND  CHARGE- (Handset) CHARGE- (Base)  GND  DC- (GND)
In this way, the BBIC on Handset detects the fact that the battery is charged.
The charge current is controlled by switching Q101 of Handset.
Refer to Fig.101 in Power Supply Circuit (P.5).
3.1.5.

Signal Route

[Changed from original section "4.6. Signal Route"]
SIGNAL ROUTE
IN
DTMF TONE (BASE UNIT)
TEL OUT IC3 - AOP - R2 - C5 - Q1 - Q3 - D2
(to Tel Line)
(BASE UNIT)
DTMF TONE
A
TEL IN
(from Tel Line)
B
(HANDSET)
CDL TX
MIC
(to Tel Line)
(BASE UNIT)
from HANDSET
R2 - C5 - Q1 - Q3 - D2
(BASE UNIT)
CDL RX
A
(from Tel Line)
B
(HANDSET)
from BASE UNIT - ANTENNA - C149 - D803 - C820 - IC3 - RXI, RXIX
Caller ID (BASE UNIT)
(from Tel Line) A - C26 - R33
B - C27 - R34
SIGNAL
D2 - Q3 - R12 - C15 - R14 - LINEA - IC3
C105 - IC103 - MICP
R105 - C106 - IC103 - MICN
ANT1
ANT2 - C39
A
B
D2 - Q3 - R12 - C15 - R14 - IC3 - LINEA - IC3 - PO, POX - C826 - D801 - C808
- D6 ANT1 to HANDSET
C39 - ANT2 to HANDSET
R50 R200 - IC3 - LINEN
C70
R51 R201 - IC3 - LINEP
C71
ROUTE
A
B
IC3 PO C826 - D803 - C149 - ANT1 to BASE UNIT
POX
D6 - C808 - D801 - C820 - IC3 - RXI, RXIX - IC3 - AOP -
7
OUT
IC103 - H01P - SPEAKER (+)
IC103 - H01N - SPEAKER (-)