Panasonic KX-TG8021BXS Service Manual page 48

KX-TG8021BXS/KX-TG8021BXT/KX-TGA800BXS/KX-TGA800BXT
Items
(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
- 1. Link with Handset.
2. Input -45 dBm/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 12 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, SA1, L1,
L2, D3, Q3, Q4,
R14, R15, R16,
R17
R55, R56, R57,
D22, D23, C623
IC7, IC421,
R424~R429,
C421, C422,
Q421
Check or
Replace Parts
R1
D1, F1