Panasonic KX-TG2873BXS, Service Manual

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59
KX-TG2873BXS/KX-TGA280BXS
12.2. The Setting Method of JIG (Base Unit)
12.2.1. Preparation
12.2.1.1. Equipment Required
• Frequency counter: It must be precise enough to measure intervals of 1 Hz (precision; ±4 ppm).
Hewlett Packard, 53131A is recommended.
• Digital multi-meter (DMM): it must be able to measure voltage and current.
• Oscilloscope
12.2.1.2. JIG and PC
• Serial JIG
JIG Cable: PQZZ1CD300E*
• PC which runs in DOS mode
•
Batch file CD-ROM for setting: PQZZTG2873BX
Note:
*: If you have the JIG Cable for TCD500 series
(PQZZ1CD505E), change the following values of resis-
tance.
12.2.2. PC Setting
12.2.2.1. Connections
Connect the AC adaptor to CN101 (base unit).
Connect the JIG Cable GND (black).
Connect the JIG Cable URX (red) and UTX (yellow).
Note:
*: COM port names may vary depending on what your PC calls it.
Resistor Old value (k
Ω
) New value (k
Ω
)
R2 22 3.3
R3 22 3.3
R4 22 4.7
R7 4.7 10