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