Panasonic KX-TG8200BXB Service Manual page 44

KX-TG8200BXB/KX-TGA820BXB
Items
(G)* Hookswitch Check with
DC Characteristics
(H) DTMF Generator Check
(I)* Transmitted Power Con-
firmation
(J)* Modulation Check and
Adjustment
(K)* Frequency Offset Check
(L)* Frequency Drift Confir-
mation
(M)* Sensitivity Receiver
Confirmation
(N)* Timing Confirmation
Check
Point
- 1. Connect CN1 (Telephone Socket) to Tel-simulator which is connected with
600 Ω.
2. Set line voltage to 48 V and line current to 40 mA at off-hook condition of nor-
mal telephone.
3. Execute the command "hookoff"
4. Confirm that the line current is 40 mA ± 5 mA.
5. Execute the command "hookon".
6. Confirm that the line current is less than + 0.8 mA.
1. Connect CN1 (Telephone Socket) to DTMF tester. (Road=600 Ω)
-
2. Link Handset and push dial key.
3. Confirm DTMF character.
4. Confirm that the high Group is -6 dBm ± 2 dBm.
5. Confirm that the low Group is -8 dBm ± 2 dBm.
- Remove the Antenna before starting step from 1 to 7.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Short A_1 and GND.
• Test mode: FP
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
• RF LEVEL = -70dBm.
2. Execute the command "testmode".
3. Execute the command "sendchar dmv 2 2".
4. Check that "Signalling Status" has been set to "Locked", then press "ACCEPT
RFPI".
5. Initiate connection from Dect tester ("set up connect")
6. Execute the command "ANT1".
7. Confirm that the NTP value at ANT is 20.7 dBm ~ 25.7 dBm.
- Follow steps 1 to 6 of (I).
7.Confirm that the B-Field Modulation is +220 ~ +403/-220 ~ -403 kHz/div &
Modulated width
8.Adjust the B-Field Modulation if required. (Execute the command "readmod"
and "wrtmod xx", where xx is the value.)
- Follow steps 1 to 6 of (I).
7.Confirm that the frequency offset is < ± 50 kHz.
- Follow steps 1 to 6 of (I).
7.Confirm that the frequency drift is < ± 30 kHz/ms.
- Follow steps 1 to 6 of (I).
7.Set DECT tester power to -90 dBm.
8.Confirm that the BER is < 1000 ppm.
- Follow steps 1 to 6 of (I).
7.Confirm that the Timing accuracy is < ± 5.0 ppm.
Procedure
670 kHz using data type Fig31.
44
Check or
Replace Parts
L1, L2, Q3, R14,
R15, Q4, R16,
R17, IC7, D3
IC7, R116,
C141, R29, C22,
C23, R18~R24,
C14~C17, Q5,
D4
IC7, IC10, L7,
C117, C118,
C124, C125,
R106, R109,
DA1, C112,
R111, C126,
C127, R112,
R125, C128
IC7, IC10, L7,
C117, C118,
C124, C125,
R106, R109,
DA1, C112,
R111, C126,
C127, R112,
R125, C128
IC7, IC10, L7,
C117, C118,
C124, C125,
R106, R109,
DA1, C112,
R111, C126,
C127, R112,
R125, C128
IC7, IC10, L7,
C117, C118,
C124, C125,
R106, R109,
DA1, C112,
R111, C126,
C127, R112,
R125, C128
IC7, IC10, L7,
C117, C118,
C124, C125,
R106, R109,
DA1, C112,
R111, C126,
C127, R112,
R125, C128
IC7, IC10, L7,
C117, C118,
C124, C125,
R106, R109,
DA1, C112,
R111, C126,
C127, R112,
R125, C128