Panasonic KX-TCD450 Series Service Manual page 47

Items
(O)* Transmit Audio Check
and Adjustment
(P) Charging Check
Note:
After the measuring, sock up the solder of TP.
* : PC Setting (P.42) is required beforehand.
The connection of adjustment equipment are as shown in Adjustment Standard (Base Unit) (P.48).
Adjustment
Point
ANT 1. Configure the DECT tester (CMD60) as follows;
J1
<Setting>
· Test mode: FP
· Mode: Normal
· PMID: 0000
2. Execute the command "testmode".
3. Initiate connection from DECT tester.
4. Execute the command "hookoff".
5. Execute the command "openau".
6. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
Ω.
7. Set line voltage to 48V and line current to 40mA.
8. Input audio signal (30mVrms/1kHz tone) to DECT tester.
<DECT tester setting>
· Scramble: On
· AF Gen to ADPCM: On
· AF Meter Input: AF Voltm
· AF Gen Frequency: 1000Hz
· AF Gen Level: 30mVrms
9. Confirm hearing tone: 330mVrms ± 100mVrms.
10. Adjust audio level if required. (Make sure current value using "getspkrgain".
And then execute the command "setspkrgain xx", where xx is the value.)
11. Confirm that the audio distortion at 600R of Tel-simulator is < 5 %.
- 1. Connect Charge Contact 12Ω/2W register between charge+ and charge-.
2. Measure and confirm voltage across the regigster is 2.3V ± 0.2V.
KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT
Procedure
47
Check or
Replace Parts
IC2,R32,C22,
R23,C14,C13,
R22,R21,Q6,
R18,R19,R20,
C12,D2,C1,
C2,R77,R16,
D3,R12,Q2,
R7,R8,R9,
R10,Q3,IC3,
L1,C43,C61,
C68,C69,C48,
C72,C66,C67,
C65,C57,C73,
L3,DA1,R66,
R67,C55,C56,
R78,R79,C54
C58,C80,R38
C90,C52,C81,
C82,C83,C84,
C85,C91,L8
C47
D4,R43,R44