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Model
KX-TG6421CAM KX-TG6421CAT KX-TG6422CAT KX-TGA641RUM KX-TGA641RUT
Pages
106
Size
2.62 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS ANSWERING SYSTEM
File
kx-tg6421cam-kx-tg6421cat-kx-tg6422cat-kx-tga641ru.pdf
Date
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Panasonic KX-TG6421CAM / KX-TG6421CAT / KX-TG6422CAT / KX-TGA641RUM / KX-TGA641RUT Service Manual ▷ View online

57
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
10.1.2. Handset
58
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
10.1.3. Charger Unit
59
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
10.2. How to Replace the Handset LCD
60
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
11 Measurements and Adjustments
This chapter explains the measuring equipment, the JIG connection, and the PC setting method necessary for the measurement in 
 Troubleshooting Guide (P.35)
11.1. Equipment Required
• Digital multi-meter (DMM): it must be able to measure voltage and current.
• Oscilloscope.
• Frequency counter: It must be precise enough to measure intervals of 1 Hz (precision; ±4 ppm)
Hewlett Packard, 53131A is recommended.
• DECT tester: Rohde & Schwarz, CMD 60 is recommended.
This equipment may be useful in order to precisely adjust like a mass production.
11.2. The Setting Method of JIG (Base Unit)
This section explains the PC setting to use command required in Check Point (Base Unit)(P.47).
<Preparation>
• Serial JIG cable: PQZZ1CD300E*
• PC which runs in DOS mode
• Batch file CD-ROM for setting: PNZZTG6421CA
Note:
*: If you have the JIG Cable for TCD500 series
(PQZZ1CD505E), change the following values of resis-
tance. Then you can use it as a JIG Cable for both TCD300
and TCD500 series. (It is an upper compatible JIG Cable.)
11.2.1. Connections
 Connect the AC adaptor to DC-JACK (base unit).
 Connect the JIG Cable GND (black) to GND.
 Connect the JIG Cable RX (red) to URX and TX (yellow) to UTX.
Note:
*: COM port names may vary depending on what your PC calls it.
Resistor
Old value (k
Ω) New value (kΩ)
R2
22
3.3
R3
22
3.3
R4
22
4.7
R7
4.7
10
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