Panasonic KX-TG7227UAJ / KX-TG7227UAM / KX-TG7227UAS / KX-TG7227UAT / KX-TG7228UAS / KX-TG7228UAT / KX-TGA721RUM / KX-TGA721RUS / KX-TGA721RUT / KX-TGA721UAJ / KX-TGA721UAM / KX-TGA721UAS / KX-TGA721UAT Service Manual ▷ View online
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KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
11.5. Adjustment Standard (Handset)
When connecting the simulator equipments for checking, please refer to below.
11.5.1. Component View
Note:
(A) - (R) is referred to Check Point (Handset) (P.47)
(A) - (R) is referred to Check Point (Handset) (P.47)
L4
L4
R45
L8
D7
R6
R5
C113
C130
C23 C131
F1
TP20
TP22
TP23
TP21
D8
MIC
J3
CHARGE+
CHARGE-
J1
C15
R7
R12
R122
C38
C21
R11
R124
J2
J4
C114
C73
C75
C35
C74
R21
C19
1
21
C24
C20
L6
C26
C39
C22
C5
C10
C9
C4
C133
C8
C18
R66
R2
C99 C111
C112
C70
C71
C129
C122
C121
R115
R113
R
114
R112
C128
C57
C58
C62
C120
C125
C59
1
32
27
26
17
10
C61
C56
C54
C55
C50
R53
R107
R52
C52
R106
C53
C51
C101
C3
R63
C37
18
45
R42
C98
RA2
RA3
R1
JT
A
G
GND
VDD1
VDD2
L1
VDD3
PO
WER
BA
T
C119
C118
C118
C25
R22
R46
RA1
RA5
R111
Q5
Q9
Q4
Q7
C30
C11
C12
R25
R15
R24
R23
R123
R14
R19
X1
R13
R61
R62
R47
C36
C34
C6
C7
C27
UTX
URX
CLK
CLK_G
Q3
E
E
S
Q2
Q1
SP_TEST1
REV_TEST2
ANT1
ANT
REV_TEST1
SP_TEST2
D1
IC1
IC3
IC4
C1
C2
PQUP11526Z
KX-TGA721
A
PbF
6.3 V
47
F
AF
GENERA
T
O
R
TP22
TP23
(Q
)
MIC-
MIC+
TP21
TP20
DC
6.5 V
Current
Probe
Oscilloscope
DC PO
WER
2.30-2.60 V
(F
) (
G
) (
H
) (
I)
(A
) (
B
) (
C
)
(Q
) (
R
)
(J
)
(A
) (
D
) (
E
) (
H
) (
I) (
J
) (
K
)
2.7 V
Zener
F
requency
Counter
GND
GND
GND
CLK
VDD1
VDD2
VDD3
UTX
URX
PC
Digital
V
olt Meter
22pF
100
Ω
OSC
AF V
O
LT
METER
LOOP
Sim
ulator
Dumm
y Base
Unit
AF
OSC
600
Ω
GND
ANT
DECT T
ester
CMD60
(K
) (
L
) (
M
)
(N
) (
O
) (
P
)
(Q
) (
R
)
SP+
REV-
REV+
SP-
Oscilloscope
AF V
O
LT
METER
150
Ω
8
Ω
56
Ω
56
Ω
1 F
DC PO
WER
2.00-2.25 V
at BA
TT LO
W
PO
WER KEY
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KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
11.6. Things to Do after Replacing IC or X'tal
Cautions:
Some of the content on this page may not apply to models from some countries.
11.6.1. Base Unit
Before making the following adjustment, ensure you have carried out PC Setting (P.59) in The Setting Method of JIG (Base
Unit).
Unit).
Note:
(*1) XX: country code, YY: revision number, ZZ: Voice Prompt
“XX”, “YY” and “ZZ” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and PC
(P.59).
(*2) Refer to Check Point (Base Unit) (P.44)
“XX”, “YY” and “ZZ” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and PC
(P.59).
(*2) Refer to Check Point (Base Unit) (P.44)
Items
Necessary Adjustment
BBIC (FLASH type)
(IC7)
(IC7)
Programs for Voice processing, interface for RF
and EEPROM
and EEPROM
1. Make sure to connect the JIG cable, then detach the DC
Power.
2. Execute the command “flw438 ************.hex”.
3. Connect the DC Power.
4. Press the PC Enter key once.
5. After a few minutes, “Successful upgrade” is displayed
3. Connect the DC Power.
4. Press the PC Enter key once.
5. After a few minutes, “Successful upgrade” is displayed
on the PC indicating downloading has finished.
6. Detach the JIG cable, then disconnect the DC Power.
7. Connect the DC Power.
8. Connect the JIG cable again, and execute the command
7. Connect the DC Power.
8. Connect the JIG cable again, and execute the command
“getchk”, then confirm the checksum value is correct.
• If the downloading fails, start again from step 1.
9. Default batch file: Execute the command “default.bat”.
10. Country version batch file: Execute the command
“TG7220XXrevYY.bat”. (*1)
11. Clock adjustment: Refer to Check Point (F). (*2)
BBIC (QFP/COB type)
(IC7)
(IC7)
Programs for Voice processing, interface for RF
and EEPROM
and EEPROM
1. Default batch file: Execute the command “default.bat”.
2. Country version batch file: Execute the command
2. Country version batch file: Execute the command
“TG7220XXrevYY.bat”. (*1)
3. Clock adjustment: Refer to Check Point (F). (*2)
EEPROM (IC5)
Adjustment parameter data
(country version batch file, default batch file,
etc.)
(country version batch file, default batch file,
etc.)
1. Change the address “0000” of EEPROM to “55”.
2. Default batch file: Execute the command “default.bat”.
3. Country version batch file: Execute the command
2. Default batch file: Execute the command “default.bat”.
3. Country version batch file: Execute the command
“TG7220XXrevYY.bat”. (*1)
4. Clock adjustment: Refer to Check Point (F). (*2)
FLASH (IC11)
Voice prompt data
(vary depending on country version)
(vary depending on country version)
1. Wait more than 15 seconds after connecting the JIG
Cables.
2. Execute the command “VPDL08 -8M ZZ.bin” (*1)
(writing time: aprox. About 1 min (115200 bps).)
X'tal (X1)
System clock
1. Refer to Check Point (F). (*2)
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KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
11.6.2. Handset
Before making the following adjustment, ensure you have carried out PC Setting (P.63) in The Setting Method of JIG (Hand-
set).
set).
Note:
(*3) XX: country code, YY: revision number
“XX” and “YY” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and PC
(P.59).
“XX” and “YY” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and PC
(P.59).
(*4) Refer to Check Point (Handset) (P.47)
Items
Necessary Adjustment
BBIC (FLASH type)
(IC1)
(IC1)
Programs for Voice processing, interface for RF
and EEPROM
and EEPROM
1. Make sure to connect the JIG cable, then detach the DC
Power.
2. Execute the command “flw430 ************.hex”.
3. Connect the DC Power.
4. Press and hold the handset Power key.
5. While holding down the handset Power key, press the PC
3. Connect the DC Power.
4. Press and hold the handset Power key.
5. While holding down the handset Power key, press the PC
Enter key once.
6. After a few minutes, “Successful upgrade” is displayed
on the PC indicating downloading has finished.
7. Detach the JIG cable, then press the handset Power key
to turn it on.
8. Connect the JIG cable again, and execute the command
“getchk”, then confirm the checksum value is correct.
• If the downloading fails, start again from step 1.
9. Default batch file: Execute the command “default.bat”.
10. Default batch file (remaining): Execute the Command
“TGA721DEFrevYY.bat”. (*3)
11. Country version batch file: Execute the command
“TGA721XXrevYY”. (*3)
12. Clock adjustment: Refer to Check Point (J). (*4)
13. 1.8 V setting and battery low detection: Refer to Check
13. 1.8 V setting and battery low detection: Refer to Check
Point (A), (H) and (I). (*4)
BBIC (QFP/COB type)
(IC1)
(IC1)
Programs for Voice processing, interface for RF
and EEPROM
and EEPROM
1. Default batch file: Execute the command “default.bat”.
2. Default batch file (remaining): Execute the Command
2. Default batch file (remaining): Execute the Command
“TGA721DEFrevYY.bat”. (*3)
3. Country version batch file: Execute the command
“TGA721XXrevYY”. (*3)
4. Clock adjustment: Refer to Check Point (J). (*4)
5. 1.8 V setting and battery low detection: Refer to Check
5. 1.8 V setting and battery low detection: Refer to Check
Point (A), (H) and (I). (*4)
EEPROM (IC3)
Adjustment parameter data
(country version batch file, default batch file,
etc.)
(country version batch file, default batch file,
etc.)
1. Default batch file: Execute the command “default.bat”.
2. Default batch file (remaining): Execute the Command
2. Default batch file (remaining): Execute the Command
“TGA721DEFrevYY.bat”. (*3)
3. Country version batch file: Execute the command
“TGA721XXrevYY”. (*3)
4. Clock adjustment: Refer to Check Point (J). (*4)
5. 1.8 V setting and battery low detection: Refer to Check
5. 1.8 V setting and battery low detection: Refer to Check
Point (A), (H) and (I). (*4)
X'tal (X1)
System clock
1. Refer to Check Point (J). (*4)
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KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
11.7. RF Specification
11.7.1. Base Unit
*: Refer to Check Point (Base Unit) (P.44)
11.7.2. Handset
**: Refer to Check Point (Handset) (P.47)
Item
Value
Refer to -. *
TX Power
20.7 dBm ~ 25.7 dBm
Check Point (Base Unit) (I)
Modulation
-220 ~ -403/+220 ~ +403 kHz/div & Mod-
ulated width 670 kHz
ulated width 670 kHz
Check Point (Base Unit) (J)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Base Unit) (K)
Frequency Drift
< ± 30 kHz / ms
Check Point (Base Unit) (L)
RX Sensitivity
< 1000 ppm
Check Point (Base Unit) (M)
Timing Accuracy
< ± 5.0 ppm
Check Point (Base Unit) (N)
Power RAMP
Power RAMP is matching
Check Point (Base Unit) (O)
Item
Value
Refer to -. **
TX Power
20 dBm ~ 25 dBm
Check Point (Handset) (K)
Modulation
-220 ~ -403/+220 ~ +403 kHz/div & Mod-
ulated width 670 kHz
ulated width 670 kHz
Check Point (Handset) (L)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Handset) (M)
Frequency Drift
< ± 30 kHz / ms
Check Point (Handset) (N)
RX Sensitivity
< 1000 ppm
Check Point (Handset) (O)
Power RAMP
Power RAMP is matching
Check Point (Handset) (P)
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