Panasonic KX-TG8551CAB / KX-TG8561CAB / KX-TGA855RUB Service Manual ▷ View online
53
KX-TG8551CAB/KXTG8561CAB/KX-TGA855RUB
10.2. How to Replace the Base Unit LCD (KX-TG8561 Only)
Operational P.C.Board
Ԙ
Fit the heatseal of a new LCD.
0.2mm
0.2mm
If interval tolerance between center lines
is less than 0.2 mm, it is o.k.
is less than 0.2 mm, it is o.k.
Horizontal Interval
Tolerance
Tolerance
Vertical Interval
Tolerance
Tolerance
OK
NG
NG
NG
(Horizontal interval tolerance is
more than 0.2 mm.)
more than 0.2 mm.)
(Vertical interval tolerance is
more than 0.2 mm.)
more than 0.2 mm.)
(Inclined)
54
KX-TG8551CAB/KXTG8561CAB/KX-TGA855RUB
Operational P.C.Board
Ԛ
Attach the LCD and fix by hook A (two points).
Rubber of Soldering Iron
(Part No. PQZZ430PRB)
(Part No. PQZZ430PRB)
Tip of Soldering Iron
(Part No. PQZZ430PIR)
Operational P.C.Board
ԙ
Heatweld with the tip of the soldering
iron about 5 to 8 seconds
(in case of 60W soldering iron).
iron about 5 to 8 seconds
(in case of 60W soldering iron).
A
55
KX-TG8551CAB/KXTG8561CAB/KX-TGA855RUB
10.3. How to Replace the Handset LCD
Note:
The illustrations are simplified in this page.
They may differ from the actual product.
They may differ from the actual product.
1
2
Attach LCD to P.C.B.
*When attaching the LCD holder,
don't pull the FPC (Flexible Print Circuit).
*When attaching the LCD holder,
don't pull the FPC (Flexible Print Circuit).
Locate the Flat Cable inside as shown.
A
B
LCD
B
A
Lock.
A
A
(Lock.)
56
KX-TG8551CAB/KXTG8561CAB/KX-TGA855RUB
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.28)
Troubleshooting Guide (P.28)
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)
• 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.41).
<Preparation>
• Serial JIG cable: PQZZ1CD300E*
• PC which runs in DOS mode
• Batch file CD-ROM for setting: PNZZTG8561CA
• PC which runs in DOS mode
• Batch file CD-ROM for setting: PNZZTG8561CA
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.)
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.
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
Base unit P. C. board
UTX (yellow)
AC adaptor
1
2
3
3
GND (black)
URX (red)
GND
UTX
URX
To Serial Port
(COM port 1*)
(COM port 1*)
PC
Click on the first or last page to see other KX-TG8551CAB / KX-TG8561CAB / KX-TGA855RUB service manuals if exist.