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57

When connecting the simulator equipment for checking, please refer to below.

(A) - (R) is referred to Check Point (Handset) (P.41)

+

–

+

–

+

–

R48

ANT- Short

ANT- Short- GND

C91

LCD_OTP

RECEIVER

C38

C81

D21

C70

C71

D22

D14

D13

C73

C72

SP-PHONE_SPEAKER

C92

LCD_SID

LCD_CD

LCD_SCL

%LCD_RESET%

%LCD_CS%

C93

C801

ANT1_TP

JTAG

C69

CP2.8V

RA5

R60

C44

R61

C45

C46

C860

C861

C859

C862

R20

C47

C43

C12

R23

RA7

C13

C11

C22 C36

C191

C190

C98 C99

C59

C29

C30

D3

C51

C53

C52

C55

C56

C40

STM

X1

CP4V

CP3V

CKM

STB_E

KIN_4

KIN_2

SFK_LED

KIN_3

CHG_MON

1.8V

R41

C41

R77

C78

R15

R76

C79

R1

Q1

RA2

Q6 RA3

KEY_LED

C1

C32

R19

R18

C866

C85

KIN_1

STB_D

POWER

STB_B

STB_C

Q10

R10

Q12

R11

Q11

R12

R13

Q9

Q4

CHG_CTRL

STB_A

Q2

C19

R2

R9

R8

Q3

C6

F1

BATT+

R6

R45

C15

UTX

GND

URX

VBAT

BATT-

R7

C5

R3

CHG

CHG

PbF

PNLB2160Z

GREEN

ORANGE

BLUE

ORANGE

A

AF

Generator

MIC-

MIC+

+

+

(N)

CMD T

ester

CMD60

(I)(J)(K)(L)
(M)

D

C

 Po

w

e

r

2.30 - 2.60 V

Connect betw

een 

AN

T

-Shor

t and 

AN

T

-Shor

t GND

.

2.7V Zener

DC P

o

w

e

r

5.0V

CHG+

CHG-

(D)
(E)

F

requency

Counter

U-AR

T

22pF

100

(H)

(A)
(B)(C)(F)
(H)(I)

RX

TX

GND

PC

GND

DC PO

WER

2.00 - 2.25 V

(at batter

y lo

w)

P

o

w

e

r k

e

y

(F)
(G)

VDD
1.8V

(A)

CP3V (P)

CP2.8V (R)

Blue

Oscilloscope

AF V

olt

 Meter

34

8

56

1

F

56

(N)
(O)

Orange

Green

Or

ange

CP4V (Q)

58

If repairing or replacing BBIC (FLASH type), EEPROM and X'tal, it is necessary to download the required data such as
Programming data or adjustment data, etc in memory.
The set doesn't operate if it is not executed.

First, operate the PC setting according to The Setting Method of JIG (Base Unit)(P.52).
Then download the appropriate data according to the following procedures.

(*1) WW: destination code, XXX_YYY: revision number
“XXX_YYY” vary depending on the country version. You can find them in the batch file, PNZZ- mentioned in The Setting
Method of JIG (Base Unit) (P.52).
(*2) Refer to Check Point (Base Unit) (P.39)

Items

How to download/Required adjustment

EEPROM (IC611)

Adjusted parameter data is stored in memory.
(country version batch file, default batch file,
etc.)

1) Change the address “0001” of EEPROM to “AA” to download 
the data.
2) Default batch file: Execute the command “default.bat”.
3) Country version batch file: Execute the command 
“TG6811EU_WW_RevXXX_YYY.bat” (KX-TG6811) or 
“TG6821EU_WW_RevXXX_YYY.bat” (KX-TG6821) (*1)
4) Clock adjustment: Refer to Check Point (E). (*2)

X'tal (X501)

System clock

Clock adjustment data is in EEPROM, adjust the data again
after replacing it.
1) Apply 5.5V between DCP ad DCM with DC power.
2) Input Command "sendchar sfr", then you can confirm the
current value.
3) Check X'tal Frequency.(13.824 MHz ± 100 Hz).
4) If the frequency is not 13.824 MHz ± 100 Hz, adjust the 
frequency of CKM executing the command "sendchar sfr xx xx
(where xx is the value)" so that the reding of the frequency
counter is 13.824000 MHz ± 7 Hz. 

59

First, operate the PC setting according to The Setting Method of JIG (Handset)(P.55).
Then download the appropriate data according to the following procedures.

(*3) WW: destination code, XXX_YYY: revision number
“XXX_YYY” vary depending on the country version. You can find them in the batch file, PNZZ- mentioned in The Setting
Method of JIG (Handset) (P.55).

(*4) Refer to Check Point (Handset) (P.41)

Items

How to download/Required adjustment

FLASH(IC4)

Programming data is stored in memory.

1) Make sure to connect the JIG cable, then disconnect the DC
Power in order to download the data.
2) Execute the command “flw441 *********.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
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
“TGA681RU_DEF_RevXXX_YYY.bat”. (*3).
11) Country version batch file: Execute the command
“TGA681RU_WW_RevXXX_YYY.bat”. (*3).
12) Clock adjustment: Refer to Check Point (H). (*4).
13) 1.8 V setting and battery low detection: Refer to Check
Point (A), (F) and (G). (*4).

EEPROM (IC3)

Adjusted parameter data is stored in memory.
(country version batch file, default batch file,
etc.)

1) Change the address “0001” of EEPROM to “22” to download 
the data.
2) Default batch file: Execute the command “default.bat”.
3) Default batch file (remaining): Execute the command 
“TGA681RU_DEF_RevXXX_YYY.bat”. (*3)
4) Country version batch file: Execute the command 
“TGA681RU_WW_RevXXX_YYY.bat”. (*3)
5) Clock adjustment: Refer to Check Point (H). (*4)
6) 1.8 V setting and battery low detection: Refer to Check Point 
(A), (F) and (G). (*4)

X'tal (X1)

System clock

Clock adjustment data is in EEPROM, adjust the data again
after replacing it.
1) Refer to Check Point (C). (*4)

60

*: Refer to Check Point (Base Unit) (P.39)

**: Refer to Check Point (Handset) (P.41)

Item

Value

Refer to -. *

TX Power

18.5 dBm ~ 25 dBm

Modulation

-350 ± 50/+350 ± 50 kHz/div

Frequency Offset

±20 kHz

RX Sensitivity

< 1000 ppm

Power RAMP

Power RAMP is matching

Item

Value

Refer to -. **

TX Power

19 dBm ~ 25 dBm

Modulation

-350 ± 50/+350 ± 50 kHz/div 

Frequency Offset

±20 kHz

RX Sensitivity

< 1000 ppm

Power RAMP

Power RAMP is matching