Measurements And Adjustments; Equipment Required; The Setting Method Of Jig - Panasonic KX-TG3711BXB Service Manual

KX-TG3711BX/KX-TG3712BX/KX-TG3719BX/KX-TGA371BX

12 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.32)

12.1. 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.
This equipment may be useful in order to precisely adjust like a mass production.

12.2. The Setting Method of JIG

<Preparation>
• Serial JIG cable: PQZZ1CD300E*
• PC which runs in DOS mode
• Batch file CD-ROM for setting: PNZZTG3721BX
12.2.1. Connections (Base Unit)
Connect the AC adaptor.
Connect the JIG Cable GND (black).
Connect the JIG Cable RX (red) and TX (yellow).
1
AC adaptor
Note:
*: COM port names may vary depending on what your PC calls it.
UTX URX GND
Base unit P. C. board
46
Note:
*: If you have the JIG Cable for TCD500 series
(PQZZ1CD505E), change
resistance. Then you can use it as a JIG Cable for both
TCD300 and TCD500 series. (It is an upper compatible JIG
Cable.)
Resistor Old value (kΩ)
R2 22
R3 22
R4 22
R7 4.7
3 UTX (yellow)
URX (Red)
3
2
GND (black)
JIG Cable
the following values
New value (kΩ)
3.3
3.3
4.7
10
To Serial Port
(COM port 1*)
PC
of