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Model
KX-TG7227UAJ KX-TG7227UAM KX-TG7227UAS KX-TG7227UAT KX-TG7228UAS KX-TG7228UAT KX-TGA721RUM KX-TGA721RUS KX-TGA721RUT KX-TGA721UAJ KX-TGA721UAM KX-TGA721UAS KX-TGA721UAT
Pages
101
Size
2.84 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS ANSWERING SYSTEM
File
kx-tg7227uaj-kx-tg7227uam-kx-tg7227uas-kx-tg7227ua.pdf
Date
PREV: Panasonic KX-TG7225RUJ / KX-TG7225RUM / KX-TG7225RUS / KX-TG7225RUT / KX-TG7226RUS / KX-TG7226RUT / KX-TGA721RUJ / KX-TGA721RUM / KX-TGA721RUS / KX-TGA721RUT (serv.man2) Service Manual / Supplement

Panasonic KX-TG7227UAJ / KX-TG7227UAM / KX-TG7227UAS / KX-TG7227UAT / KX-TG7228UAS / KX-TG7228UAT / KX-TGA721RUM / KX-TGA721RUS / KX-TGA721RUT / KX-TGA721UAJ / KX-TGA721UAM / KX-TGA721UAS / KX-TGA721UAT Service Manual ▷ View online

53
KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
9.5.4.
How to Install the IC
1. Place the solder a little on the land where the radiation GND pad on IC bottom is to be attached.
2. Place the solder a little on the land where IC pins are to be attached, then place the IC.
Note:
• When placing the IC, the positioning should be done very carefully.
3. Heat the IC with a hot air desoldering tool through the P.C.Board until the solder on IC bottom is melted.
Note:
• Be sure to place it precisely, controlling the air volume of the hot air desoldering tool.
4. After soldering, confirm there are no short and open circuits with visual inspection.
9.5.5.
How to Remove a Solder Bridge
When a Solder Bridge is found after soldering the bottom of the IC, remove it with a soldering iron.
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KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
10 Disassembly and Assembly Instructions
10.1. Disassembly Instructions
10.1.1. Base Unit
55
KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
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KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
10.1.2. Handset
Page of 101
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