DOWNLOAD Panasonic KX-TGH210UAB / KX-TGH212UAB / KX-TGH220UAB / KX-TGHA20RUB Service Manual ↓ Size: 7.14 MB | Pages: 90 in PDF or view online for FREE

41

(F)* Battery Monitor Check

-

1. Apply 2.25 V between BATT+ and BATT-.
2. Execute the command 

sendchar PAD
sendchar LED 0
sendchar CRX 0 1
sendchar AD1
It assumes that the return value is XX.
a) XX: 70: No need to adjust
b) XX: 66 ~ 6F: Need to adjust
XX: 71 ~ 7A: Need to adjust
Write AD value of 2.25 V to EEPROM.
ex) read data: XX = 6A, write data: YY = 6A
read data: XX = 73, write data: YY = 73
EEPROM = 0009(Low Voltage) write “YY”
Execute the command “wreeprom 00 09 01 YY”.
EEPROM = 000A(No Voltage) write “YY -C"
Execute the command “wreeprom 00 0A 01 ZZ”.

ZZ = YY - C

c) XX: 00 ~ 65: Reject
XX: 7B ~ FF: Reject

IC1, R45

(G)

Battery Low 

Confirmation

-

1. Apply 2.40 V between BATT+ and BATT-.
2. Confirm that there is no flashing of Battery Icon.
3. Apply 2.25 V ± 0.08 V between BATT+ and BATT-.
4. Confirm that there is flashing of Battery Icon.

IC1, R45

(H)* BBIC Clock Adjustment

CKM

1. Apply 2.6 V between BATT+ and BATT- with DC power.
2. Input Command “sendchar sfr”, then you can confirm the current value.
3. Check X’tal Frequency. (10.368 MHz ± 100 Hz).
4. If the frequency is not 10.368 MHz ± 100 Hz, adjust the frequency of CKM

executing the command “sendchar sfr xx xx (where xx is the value)” so that the
reading of the frequency counter is 10.368000 MHz ± 5 Hz.

Note:

Clear the registered information for Base Unit before measurement, because the
Frequency will not possibly get stable due to the registered information.
Pressing the button of "3" "5" "7" "#"clears the registration.
Register to it on Base Unit after measurement. 

IC1, X1, C47

 

(I)*

Transmitted Power 

Confirmation

-

Short Antenna pattern to GND.

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

<Setting>

• Test mode: PP
• RFPI: 0102030405
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• RF LEVEL = -70 dBm
• PACKET: PP32Z

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

IC1, C801, 

C859, C860, 

C861, C862

(J)* Modulation Check and 

Adjustment

-

Follow steps 1 to 3 of (I).

4.Confirm that the B-Field Modulation is -350 ± 50/+350 ± 50 kHz/div using data
type Fig 31.

Refer to (I)

(K)*

Frequency Offset 

Confirmation

-

Follow steps 1 to 3 of (I).

4.Confirm that the frequency Offset is < ± 20 kHz.

Refer to (I)

(L)*

Sensitivity Receiver 

Confirmation

-

Follow steps 1 to 3 of (I).

4.Set DECT tester power to -88 dBm.
5.Confirm that the BER is < 1000 ppm.

Refer to (I)

(M)*

Power RAMP 

Confirmation

-

Follow steps 1 to 3 of (I).

4.Confirm that Power RAMP is matching.

Refer to (I)

(N)

Audio Check and 

Confirmation

-

1. Link to BASE which is connected to Line Simulator.
2. Set line voltage to 48 V and line current to 50 mA.
3. Input -45 dBm (600 

)/1 kHz to MIC of Handset. Measure the Level at Line I/F

and distortion level.

4. Confirm that the level is -3.0 dBm ± 5 dB and that the distortion level is < 5 %

at TEL Line (600 

 Load).

5. Input -20 dBm (600 

)/1 kHz to Line I/F. Measure the Level at Receiver of

Handset and distortion level (Receive volume set to second position from
minimum).

6. Confirm that the level is -27.0 dBm ± 4 dB and that the distortion level is < 5 %

at Receiver (34 

 Load).

IC1, C12, C11, 

C13, MIC, 
R23, R24, 

R25, RA4, 

C70, C71

Items

Check 

Point

Procedure

Check or 

Replace Parts

42

(O) SP phone Audio Check 

and Confirmation

-

1. Link to Base which is connected to Line Simulator.
2. Set line voltage to 48 V and line current to 50 mA.
3. Set the handset off-hook using SP-Phone key.
4. Input -30 dBm (600 

)/1 KHz to Line I/F and measure Receiving level at SP+

and SP-.

5. Confirm that the level is -7 dBm ± 3 dB and that the distortion level is < 5 %. 

(vol = Max at SP (8 

 Load))

IC1, C78, C79, 

R76, R77

(P)

Charge Pump 3.0 V 

Supply Confirmation

CP3V

1. Confirm that the voltage between testpoint CP3.0V and GND is 3.0 V ± 0.3 V. C30, C53, C29

(Q)

Charge Pump CP4V 
Supply Confirmation

CP4V

1. Confirm that the voltage between testpoint CP4V and GND is 4.0 V ± 0.3 V.

(Power is supplied when LED in on)

C52, C55, 

C30, C29

Items

Check 

Point

Procedure

Check or 

Replace Parts

43

ձ

ղ

ճ

ձ

ղ

 screws

Jack holder

44

ձ

ղ

ճ

ձ

ղ

 screws

Jack holder