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22

How to Check Speaker (P.39).
Signal Route (P.12)

23

If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester
(*1) or not. 

(*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic
level in detail.
(*2) Refer to Check Point (P.23)

Please follow the items below when BBIC or EEPROM is replaced.

After the measuring, suck up the solder of TP.
*: PC Setting (P.34) is required beforehand.
The connections of simulator equipments are as shown in Adjustment Standard (P.36).

Items

Check 

Point

Procedure

Check or 

Replace Parts

(A)* 1.8V Supply Adjustment

+1.8 V

1. Confirm that the voltage between test point +1.8 V and GND is 1.8V ± 0.02V.
2. Execute the command “bandgap”, then check the current Value.
3. Adjust the 1.8V voltage of +1.8 V executing command “bandgap XX” (XX is the

value).

IC1, Q1, C7, 

JK101, D102, 

CN1, CN2, 

IC3, C47, R43, 

R44, C2

(B) 2.5 V Supply Confirma-

tion

+2.5 V

1. Confirm that the voltage between test point +2.5 V and GND is 2.5 V ± 0.1 V. 

JK101, D102, 

IC104, R113, 

R114, C131

(C) 2.7 V Supply Confirma-

tion

+2.7 V

1. Confirm that the voltage between test point +2.7 V and GND is 2.7 V ± 0.1V.

IC1, IC3, R43, 

R44, C2, 

JK101, D102, 

CN1, CN2, 

IC3, R43, R44, 

C2 

(D)*

BBIC Confirmation 

(include Flash ROM)

-

1. BBIC Confirmation (Execute the command “getchk”).
2. Confirm the returned checksum value.

Connection of checksum value and program number is shown below.

IC1, X1, C14, 

C15, IC5, C46, 

C62

(E)* EEPROM Confirmation

-

1. Flash ROM Confirmation (Execute the command "ChkTGA914ErevYY.bat").

YY: revision number

2. Confirm the returned checksum value.
3. The checksum is displayed in the last output line.

“YY” and “checksum” vary depending on the country version. You can find them
in the batch file, PQZZ- mentioned in JIG and PC (P.34).

IC1, IC2, R4-

R6, Q4, R35 

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(F)* BBIC Clock Adjustment

CLK

1. Apply 6.5 V between DCP-b(+) and DCM(-) with DC power.
2. Execute the command “conttx”.
3. Input Command “rdeeprom 00 01 01”, then you can confirm the current value.
4. Adjust the frequency of CLK executing the command “setfreq 00 xx (where xx

is the value)” so that the reading of the frequency counter is 10.368000MHz ±
10Hz.

Note:

CLK is displayed only for a few seconds when executing the command “conttx”
after battery is inserted.

IC1, X1, C14, 

C15, IC105, 
C129, R132

(G)* Transmitted Power Con-

firmation

-

Remove the Antenna before starting step from 1 to 4.

1. Configure the DECT tester (CMD60) as follows;

<Setting>

• Test mode: PP
• RFPI: 0102030405
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• RF LEVEL = -70dBm

2. Execute the command “regcmd60 01 02 03 04 05”.
3. Initiate connection from DECT tester.
4. Confirm that the NTP value at ANT is 19dBm ~ 25dBm.

IC1, IC105, 

R115, R116, 

C127, C128, 

R126-R133, 

C132, C130, 

C124, C125

(H)* Modulation Check and 

Adjustment

-

Follow steps 1 to 3 of (G).

4.Confirm that the B-Field Modulation is -350 ~ -400/+320 ~ +370kHz/div using
data type Fig 31.
5.Adjust the B-Field Modulation if required. (Execute the command “Readmod”
and “wrtmod xx”, where xx is the value.)

IC1, IC105, 

R115, R116, 

C127, C128, 

R126-R133, 

C132, C130, 

C124, C125

(I)* Frequency Offset Confir-

mation

-

Follow steps 1 to 3 of (G).

4.Confirm that the frequency Offset is < ± 45kHz.

IC1, IC105, 

R115, R116, 

C127, C128, 

R126-R133, 

C132, C130, 

C124, C125

(J)* Frequency Drift Confir-

mation

-

Follow steps 1 to 3 of (G).

4.Confirm that the frequency Drift is < ± 30kHz/ms.

IC1, IC105, 

R115, R116, 

C127, C128, 

R126-R133, 

C132, C130, 

C124, C125 

(K)*

Sensitivity Receiver 

Confirmation

-

Follow steps 1 to 3 of (G).

4.Set DECT tester power to -90dBm.
5.Confirm that the BER is < 1000ppm.

IC1, IC105, 

R115, R116, 

C127, C128, 

R126-R133, 

C132, C130, 

C124, C125 

(L)*

Timing Confirmation

-

Follow steps 1 to 3 of (G).

4.Confirm that the Timing accuracy is < ± 2.0ppm.

IC1, IC105, 

R115, R116, 

C127, C128, 

R126-R133, 

C132, C130, 

C124, C125

(M)* RSSI Level Confirmation

-

Follow steps 1 to 3 of (G).

4.Set DECT tester power to -81dBm.
5.Execute the command “readrssi”.
6.Confirm that the returned value is 1D ± 8 (hex).
7.Set DECT tester power to -63dBm.
8.Execute the command “readrssi”.
9.Confirm that the returned value is 27 ± 8 (hex).

IC1, IC105, 

R115, R116, 

C127, C128, 

R126-R133, 

C132, C130, 

C124, C125

(N)* Power RAMP Confirma-

tion

-

Follow steps 1 to 3 of (G).

4.Confirm that Power RAMP is matching.

IC1, IC105, 

R115, R116, 

C127, C128, 

R126-R133, 

C132, C130, 

C124, C125

(O)

Camera Confirmation

-

1.  Link a base unit, a handset and a camera.
2. Press the call SW of the camera.
3. Confirm that the handset LCD can display the image from the camera properly

when the [talk] button of the handset is pressed.

IC1, JK2, R62, 

C56, D12, 

CN3, R65-

R70, R58, 
R59, C63, 

C64, C66-C68

Items

Check 

Point

Procedure

Check or 

Replace Parts