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Model
KX-TG6421CAM KX-TG6421CAT KX-TG6422CAT KX-TGA641RUM KX-TGA641RUT
Pages
106
Size
2.62 MB
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PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS ANSWERING SYSTEM
File
kx-tg6421cam-kx-tg6421cat-kx-tg6422cat-kx-tga641ru.pdf
Date
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Panasonic KX-TG6421CAM / KX-TG6421CAT / KX-TG6422CAT / KX-TGA641RUM / KX-TGA641RUT Service Manual ▷ View online

69
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
11.8. RF Specification
11.8.1. Base Unit
*: Refer to Check Point (Base Unit) (P.47)
11.8.2. Handset
**: Refer to Check Point (Handset) (P.51)
Item
Value
Refer to -. *
TX Power
19 dBm ~ 25 dBm
Check Point (Base Unit) (J)
Modulation
-370±30/+370±30 kHz/div & Modulated
width   690 kHz
Check Point (Base Unit) (K)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Base Unit) (L)
Frequency Drift 
< ± 35 kHz / ms
Check Point (Base Unit) (M)
RX Sensitivity
< 1000 ppm
Check Point (Base Unit) (N)
Timing Accuracy
< ± 5.0 ppm/<±15.0ppm
Check Point (Base Unit) (O)
Power RAMP
Power RAMP is matching
Check Point (Base Unit) (P)
Item
Value
Refer to -. **
TX Power
19 dBm ~ 25 dBm
Check Point (Handset) (I)
Modulation
-370±30/+370±30 kHz/div & Modulated
width   690 kHz
Check Point (Handset) (J)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Handset) (K)
Frequency Drift 
< ± 35 kHz / ms
Check Point (Handset) (L)
RX Sensitivity
< 1000 ppm
Check Point (Handset) (M)
Power RAMP
Power RAMP is matching
Check Point (Handset) (N)
70
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
11.9. How to Check the Handset Speaker or Receiver
1. Prepare the digital voltmeter, and set the selector knob to ohm meter.
2. Put the probes at the speaker terminals as shown below.
11.10. Frequency Table (MHz)
Note:
Channel No. 10: In the Test Mode on Base Unit and Handset.
BASE UNIT
HANDSET
Channel No
Transmit Frequency
Receive Frequency
Transmit Frequency
Receive Frequency
1
1897.344 1897.344 1897.344 1897.344 
2
1895.616 1895.616 1895.616 1895.616 
3
1893.888 1893.888 1893.888 1893.888 
4
1892.160 1892.160 1892.160 1892.160 
5
1890.432 1890.432 1890.432 1890.432 
6
1888.704 1888.704 1888.704 1888.704 
7
1886.976 1886.976 1886.976 1886.976 
8
1885.248
1885.248
1885.248
1885.248
9
1883.520 1883.520 1883.520 1883.520 
10
1881.792 1881.792 1881.792 1881.792 
71
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
12 Miscellaneous
12.1. CPU Data (Base Unit)
12.1.1. IC7 (BBIC)
Pin No.
Description
I/O
Connection
at Normal mode
at Reset mode
1
VSS_LNA1
-
GND
-
-
2
RF_RXp
A.I
RF_RXp
A.I
A.I
3
RF_RXn
A.I
RF_RXn
A.I
A.I
4
VSS_LNA2
-
GND
-
-
5
RFP1
D.O
RXON
O_0/1
Hi-Z
6
RFP0
D.O
ANT1
O_0/1
Hi-Z
7
REF_RES
A.O
REF_RES
A.O
A.O
8
AVS_XTAL
-
GND
-
-
9
XTAL2
A.I
XTAL2
A.I
A.I
10
XTAL1
A.I
XTAL1
A.I
A.I
11
AVD_XTAL
-
AVD_XTAL
-
-
12
RF_SUPPLY1
-
RF_SUPPLY1
-
-
13
LDO_CTRL
A.O
LDO_CTRL
A.O
O-1
14
AVD
-
AVD
-
-
15
LSRn
A.O
LSRn
A.O
A.O
16
LSRp
A.O
LSRp
A.O
A.O
17
VREFm
-
VREFm
-
-
18
MICh
A.I
MICh
A.I
A.I
19
CIDOUT/MICn
A.O
CIDOUT
A.O
A.O
20
CIDINn/MICp
A.I
CIDINn
A.I
A.I
21
CIDINp/VREFp
A.I
CIDINp
A.I
A.I
22
PULSE_CTRL
D.O
N.C.
O_0
O
23
RINGn/P3_6
D.O
HOOK
O_0/1
O
24
RINGOUT/RINGING/P3_5
A.O
RINGING
A.I
A.I
25
PARADET/P3_4
A.I
PARADET
A.I
A.I
26
ADC0/P3_3
A.I
ADC0
A.I
A.I
27
ADC1/INT0/P1_0
A.I
ADC1
A.I
A.I
28
NTC/ADC2
-
GND
-
A.I
29
SOCp
-
GND
-
A.I
30
SOCn
-
GND
-
A.I
31
CHARGE_CTRL
A.O
N.C.
A.O
O-0
32
P1_7/CHARGE
A.I
CHARGE
I
I
33
PAOUTp/P3_1
A.O
PAOUTp
A.O
O-0
34
VDDPA
-
VDDPA
-
-
35
PAOUTn/P3_0
A.O
PAOUTn
A.O
O-0
36
VBAT1
-
VBAT1
-
-
37
CP_C1x
A.I/O
N.C.
A.I/O
A.I
38
CP_C2x
A.I/O
CP_C2x
A.I/O
A.I
39
CP_C1y
A.I/O
N.C.
A.I/O
A.I
40
VBAT2
-
VBAT2
-
-
41
CP_C2y
A.I/O
CP_C2y
A.I/O
A.I
42
CP_VOUT1/LED1
A.O
CP_VOUT1
A.O
A.O
43
CP_VOUT2/LED2
A.O
CP_VOUT2
A.O
A.O
44
PON/P1_6
D.I
PullUp
I_1
I
45
VDD1
-
+1.8V
-
-
46
P2_7/BXTAL
D.O
TAM_WP
O_0/1
O-1
47
P1_5/INT5/RDI/VDDE
D.I
ROW2
I_0/1
I-PU
48
P1_4/INT4/TDOD
D.I
ROW1
I_0/1
I-PU
49
P1_3/INT3/SIO
D.I
ROW0
I_0/1
I-PU
50
P1_2/INT2/SK
D.O
KEY1
O_0/1
O-0
51
P1_1/INT1/LE
D.O
KEY0
O_0/1
O-0
52
P2_6/WTF_IN
D.O
KEY2
O_0/1
O-0
53
P0_7/SPI_DI
D.I
SPI_DI
I_0/1
I-PU
54
P0_6/SPI_DO
D.O
SPI_DO
O_0/HighZ
O-0
55
P0_5/SPI_CLK
D.O
SPI_CLK
O_0/HighZ
O-0
56
P0_4/SPI_EN
D.O
TAM_CSn
O_0/HighZ
O-1
57
P0_3/SCL2
D.O
SCL2
O_0/HighZ
O-0
58
P0_2/SDA2
D.I/O
SDA2
I/O_0/HighZ
O-0
59
P0_1/URX
D.I
URX
I_0/1
-
72
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
60
P0_0/UTX
D.O
UTX
O_0/1
-
61
RSTn
D.O
RSTn
O_0/1
O
62
JTAG
D.I/O
JTAG
I/O_0/1
I-PU
63
P2_5/PCM_FSC/SF
D.O
EEP_WP
O_0
O_0
64
P2_4/SCL1/PCM_DO/DP3
D.O
TEST
O_0
O-0
65
P2_3/SDA1/PCM_DI/DP2
D.O
N.C.
O_0
O-0
66
P2_2/PCM_CLK/CLK100
D.O
N.C.
O_0
O-0
67
P2_1/ECZ2/PWM1/LED4
D.O
LED2
A.I
A.I
68
P2_0/ECZ1/PWM0/LED3
D.O
LED1
A.I
A.I
69
VDD2
-
+1.8V
-
-
70
LDORF_CTRL
A.I
LDORF_CTRL
A.I
A.I
71
RF_SUPPLY2
-
RF_SUPPLY2
-
-
72
RF0n
D.O
ANT2
O_0/1
Hi-Z
73
RFP4
D.O
PON
O_0/1
Hi-Z
74
RFP3
D.O
PSEL
O_0/1
Hi-Z
75
VDD_PADR
A.O
VDD_PADRV
A.O
A.O
76
VSS_PADR1
-
GND
-
-
77
RF_TXp
A.O
TXp
A.O
A.O
78
RF_TXn
A.O
TXn
A.O
A.O
79
VSS_PADR2
-
GND
-
-
80
RFP2
-
TXON
-
Hi-Z
81
GND
-
GND
-
-
Pin No.
Description
I/O
Connection
at Normal mode
at Reset mode
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