Panasonic KX-TCD961EB Service Manual ▷ View online
|
33
|
KX-TCD961EB
4.4GREETING PLAYBACK CIRCUIT (SEE Fig. 26)
Circuit Operation:
Pin(63) IC101
Pin(63) IC101
→
C101
→
R100
→
R43
→
Speaker
Circuit Diagram
4.5 INTERCOM MODE
1) When the base unit LOCATOR/INT button is pressed, a call monitor signalisoutput from Pin(63 )IC101.
2) The receiving signal flows:
from portable unit
→
Pin(63) IC101
→
C101
→
R100
→
C313
→
Emitter of T303
→
Collector of T303
→
Base of
T304
→
Emitter of T304
→
Pin(5) IC302
→
Pin(7) IC302
→
Pin(4) IC301
→
Pin(8) IC301
→
C343
→
Spealcer
4.6 INITIALIZING CIRCUIT for SUB CPU (SEE Fig. 27)
Function:
This circuit is used for to initialize the SUB microcomputer (IC501) when it incorporates an AC adaptor.
This circuit is used for to initialize the SUB microcomputer (IC501) when it incorporates an AC adaptor.
Circuit Operation:
When the AC Adaptor is insered into the unit, then the voltage is shifted by D201 and power is supplied to the CPU.
The set can operate beyond point (A) in the circuit voltage diagram.
When the AC Adaptor is insered into the unit, then the voltage is shifted by D201 and power is supplied to the CPU.
The set can operate beyond point (A) in the circuit voltage diagram.
Circuit Diagram
Pin 20 IC501 (RESET)
Pin 17 IC501 (VDD)
Fig. 26
Fig. 27
|
34
|
KX-TCD961EB
4.7 POWER SUPPLY CIRCUIT (for TAM) (SEE Fig. 28)
Circuit Operation:
Power from the AC adaptor is supplied directly to the plunger. The voltage at point (A) is regulated to 5.7V by IC8 .The
5.7V voltage is dropped by D204, to 5V.
Power from the AC adaptor is supplied directly to the plunger. The voltage at point (A) is regulated to 5.7V by IC8 .The
5.7V voltage is dropped by D204, to 5V.
Circuit Diagram
+
-
+
-
D201
D204
C60
R75
C61
C56
D205
C49
3V
4V
3V
A
5V
IC201
IC8
DC
JACK
JACK
1
2
3
4
5
6
2
3
4
5
6
5.7V
IC302
IC301
IC501
RESET
CIRCUIT
CIRCUIT
OP AMP
OP AMP
TAM CPU
IN OUT
GND
IC6
IC5
Fig. 28
|
35
|
KX-TCD961EB
Fig. 29
BLOCK DIA
GRAM RF UNIT (HANDSET)
Doubler
1.89GHz
BPF
TR Switch
RF
Amp
112.32MHz
BPF
BPF=Bandpass Filter
LPF=Low Pass Filter
LPF=Low Pass Filter
Mixer
Phase-Lock-Loop
Tx
Buffer
PA
Switch
P.A.
SAW
BPF
IF
Amp
RSSI
DC
Comp
IF
Amp
Det.
VCO
Buff.
DC Contr.
Rx/Tx
3V
Reg.
3V
Data
LPF
945MHz
1.89GHz
10.368MHz
4V-FILT
SLICE OUT
31
SLICE CTRL
30
RSSI
32
SYS CLOCK
34
PLL ENABLE
22
PLL DATA
21
PLL CLOCK
20
PLL PD
12
Vcc OC
18
RF ON
8
Rx DATA
29
Tx DATA
19
Vcc PA (4V)
5
,
4
PLL PWR DWN
17
Tx/Rx SWITCH
2
PA RAMP
39
RF1
49
NC
42
GND
43
GND
44
GND
45
GND
46
GND
47
GND
48
RF1
49
GND
15
NC
14
NC
13
PLL PD
12
NC
11
GND
10
GND
9
RF ON
8
GND
7
GND
6
Vcc PA
5
Vcc PA
4
GND
3
Tx/Rx SWITCH
2
GND
1
GND
26
GND
27
GND
28
Rx DATA
29
SLICE CTRL
30
SLICE OUT
31
RSSI
32
GND
33
SYS CLOCK
34
GND
35
GND
36
GND
37
GND
38
PA RAMP
39
GND
40
GND
41
GND
25
GND
24
GND
23
PLL ENABLE
22
PLL DATA
21
PLL CLOCK
20
Tx DATA
19
Vcc OC
18
PLL PWR DWN
17
NC
16
|
36
|
KX-TCD961EB
Fig. 30
BLOCK DIA
GRAM B
ASE-B
AND SECTION (HANDSET)
Battery
IC3
EEPROM
T3
Tr
T5
Buf
T1, T2
Charge
Circuit
Circuit
J4
IC2
Flash
PROM
LCD
Display
Driver
Keyboard
30
84
CE
ADDRESS
KEYBOARD ROWS
KEYBOARD COLUMNS
DATA
32
86
10
23
23
SYS-CLK
Tx-DATA
Rx-DATA
PLLCLK
OE
7
93
WR
RCS
RD
WR
RD
WR
Key Scan
Key In
2
18
47
CS
17
18
20
1
46
RS
19
12
13
X1
D12
5
+3V
+3V
+3.9V
Buzzer
38
6
50
41
45
69
52
40
Ear.
Amp
Amp
DAC
ADC
Clock
+Data
Recov
+Data
Recov
Gaus
Filter
RSSI
ADC
ADC
Microprocessor
Clock
Gen.
Gen.
BMC
IC1
BBIC
39
27/26
4
3
3
49
SLICE OUT
RSSI
10.368MHz
22
21
21
PLLDATA
PLLLENABLE
PLLLENABLE
5
PLLPD
4
RFON
PA-RAMP
PA-RAMP
24
Tx/Rx-SW
CHARGE SW.
D7
On
RESET
SERIAL DATA
INPUT/OUT
INPUT/OUT
SERIAL DATA
SERIAL DATA
SER. CLOCK
RF CLK
SER. CLOCK
CHARGE
CONTACTS
CONTACTS
66
65
58
Mic.
Earpiece
+
+
PON
VBAT2
LD02-
CTRL
CTRL
RSTN
BUZZER
CHARGE
PASUP
61
63
J3
J6
J8
J8
Mic.
Amp
Amp
Click on the first or last page to see other KX-TCD961EB service manuals if exist.