Panasonic KX-TC1801B Service Manual ▷ View online
24 SCHEMATIC DIAGRAM (RF Unit)
TX
RX
49
KX-TC1801B
24.1. MEMO
50
KX-TC1801B
25 CIRCUIT BOARD (Base Unit)
25.1. Conponent View
E B
E B
E
B
E
B
E B
E B
E
B
B
GND
PWRDIN
If the BASE PCB number of the unit you are repairing is PQUP10981ZA, you will see a resistor between PWRDIN and GND of the RF block.
(See the figure below.) As the resistor is directly soldered to the RF block, you need to remove it when replacing RF with new one.
(See the figure below.) As the resistor is directly soldered to the RF block, you need to remove it when replacing RF with new one.
When replacing RF, please note:
1. Remove the resistor carefully and keep it.
2. Replace the RF with new one.
3. Install the removed resistor to its original location. If you lose the resistor or damage the resistor, please use ERJ3GEYJ103.
1. Remove the resistor carefully and keep it.
2. Replace the RF with new one.
3. Install the removed resistor to its original location. If you lose the resistor or damage the resistor, please use ERJ3GEYJ103.
If the BASE PCB number is PQUP10981ZB the resistor is not needed.
KX-TC1801B
51
25.2. Flow Solder Side View
KX-TC1801B
52
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