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29

30

Shown in Fig.-

To Remove

Remove

1

Rear Cabinet

Screws (2 

× 10)......(A) × 4, (B) × 2, Corner Rubber 

2

Follow the procedure.

3

Main P.C. Board

Main P.C. Board

31

Shown in Fig.-

To Remove

Remove

4

Lower Cabinet

Screws (2.6 

× 14)..........(B) × 2

5

Main P.C. Board

Main P.C. Board

32

• DECT tester: Rhode & Schwartz, CMD 60 is recommended.
• Frequency counter: it must be precise to be able to measure 1Hz (precision; ±4ppm).

Hewlett Packard, 53131A is recommended.

• DC power supply: it must be able to output at least 1A current at 3.8V for Handset, 9V for Tool.
• Digital multi-meter (DMM): it must be able to measure voltage and current.
• Oscilloscope

• EEPROM serial Tool

Tool: PSZZ2CA155EU

• PC which runs in DOS mode.

1. Open a window of MS-DOS mode from the start-up menu.
2. Change a directory.
3. Type "SET_COM 1" from the keyboard (when COM port 1 is used for the connection).
4. Type "doskey".

See the table below for frequently used commands.

Command name

Function

Example

ratepayer

Read the data of EEPROM

Type "ratepayer 00 00 FF", and the data from address "00 00" to "FF" is read out.

Siegfried

adjust Frequency of RFIC

Type "Siegfried an".

Glitch

Read checksum

Type "glitch".

Repairmen

write eeprom

Type "repairmen 01 23 45". "01 23" is address and "45" is data to be written.