Panasonic KX-TG7341BXM Service Manual page 48

KX-TG7341BX/KX-TGA731BX
Items
(P)* Power RAMP Confirma-
tion
(Q) Audio Check
(R) Charging Check
(S)* TAM Operation Confir-
mation
9.2.2. Check Point (Charger Unit)
Items
(A) Charging Check
Note:
After the measuring, suck up the solder of TP.
The connection of adjustment equipment is as shown in Adjustment Standard (Charger Unit) (P.61).
Check
Point
- Follow steps 1 to 6 of (J).
7.Confirm that Power RAMP is matching.
- 1. Link with Handset.
2. Input -45dBm/1kHz to MIC of Handset.
Measure the Level at Line I/F and distortion level.
3. Confirm that the level is -8.5 dBm ± 2 dBm and that the distortion level is < 5%
at TEL Line (600 Ω Load).
4. Input -20 dBm/1 kHz to Line I/F.
Measure the level at Receiver of Handset and distortion level
(*Receive volume set to second position from minimum).
5. Confirm that the level is -22 dBm ± 2 dBm and that the distortion level is < 5%
at Receiver (Volume Middle, 150 Ω Load).
1. Connect Charge Contact 10 Ω/2 W resistor between charge+ and charge-.
-
2. Measure and confirm voltage across the resistor is 2.75 V ± 0.3 V.
- 1. TAM Confirmation (Execute the command "sendchar VPI").
2. Confirm the returned Value (Value is "DAS7EA 03").
Check
Point
1. Connect Charge Contact 10 Ω/2 W resistor between charge+ and charge-.
-
2. Measure and confirm voltage across the resistor is 2.75 V ± 0.3 V.
Procedure
Procedure
48
Check or
Replace Parts
IC7, L104,
C101, C106,
C102, C109,
R65, R66, DA1,
R802~R807,
C837, C826,
C822, C820,
C832, C833,
C63, Q401,
C402, C105,
C110, C65,
IC801, D801,
D802,
C801~C804,
C808~C814,
L802~L804,
C819, C834,
C825
IC7, SA1, L1,
L2, D3, Q3, Q4,
R14, R15, R16,
R17
R56, R57, D22,
D23
IC7, IC421,
R424~R429,
C421, C422,
Q421
Check or
Replace Parts
R1
D1, F1