Panasonic KX-A405CE Service Manual ▷ View online
13
KX-A405CE
7.3.
Check Link
Note:
(*1) Refer to Clock adjustment after crystal replacement (P.19) .
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KX-A405CE
7.4.
Check the RF part
Note:
(*1) Check parts for misalignment, blow-out, or total loss.
Confirmation of the parts inside RF Signal Route (P.8) shield box is impossible and therefore unnecessary.
15
KX-A405CE
8 Disassembly and Assembly Instructions
8.1.
Disassembly Instructions
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KX-A405CE
9 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.10)
Troubleshooting Guide (P.10)
9.1.
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)
• Oscilloscope.
• Frequency counter: It must be precise enough to measure intervals of 1 Hz (precision; ±4 ppm)
Hewlett Packard, 53131A is recommended.
(If you are already using a frequency counter with your cell station or portable cell station, you do not need to replace it.)
(If you are already using a frequency counter with your cell station or portable cell station, you do not need to replace it.)
9.2.
The Setting Method of JIG
<Preparation>
• Serial JIG cable: PQZZ1CD300E*
• Maintenance software for PC (PSZZ3TD7896M) PC which
• Maintenance software for PC (PSZZ3TD7896M) PC which
runs in DOS mode
Note:
*: If you have the JIG Cable for TCD500 series
(PQZZ1CD505E), change the following values of
resistance. Then you can use it as a JIG Cable for both
TCD300 and TCD500 series. (It is an upper compatible JIG
Cable.)
(PQZZ1CD505E), change the following values of
resistance. Then you can use it as a JIG Cable for both
TCD300 and TCD500 series. (It is an upper compatible JIG
Cable.)
9.2.1.
Connections
Connect the AC adaptor.
Connect the JIG Cable GND (black).
Connect the JIG Cable RX (red) and TX (yellow).
Connect the JIG Cable GND (black).
Connect the JIG Cable RX (red) and TX (yellow).
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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