KX-MB773RU, KX-MB773UA - Panasonic Fax Service Manual Supplement (repair manual). Page 3

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Q Change of the Suffix Code 

Serial No.Label tells you the suffix code as follows.

                                                               KX-MB773RU/KX-MB773UA

The SOC-IC mounted on the Main Board has been changed.
Therefore, the parts numbers of SOC-IC, Flash ROM and Main Boardare also changed.
After replacing any parts of those, make sure to pass the included leaflet and new CD-ROM to
the customer and ask them to install the MFS application software contained on the CD-ROM on
their personal computer. It does not work properly without being set up with the new software.

Ref. No.

Part No.

Part Name & Description 

Pcs/

Set

Remarks

Time of Change

Original (Old)

(Suffix)

MAIN BOARD
PCB1

PNWP1MB773RU

MAIN BOARD ASS'Y (RTL) 
(KX-MB773RU)

(*2)

1

*a

1

X

D to E

PCB1

PNWP1MB773UA

MAIN BOARD ASS'Y (RTL) 
(KX-MB773UA)

(*3)

1

*a

1

X

D to E

IC300

C1ZBZ0003716

IC(SOC)

(*2)
(*3)

1

*a

1

X

D to E

IC402

PFWIMB773RU3

IC (ROM) (KX-MB773RU) (Change 2)
[Program Ver. GAU1RS 

→ GAU1RT]

(*2)

1

*a

1

X

D to E

IC402

PFWIMB773UA3

IC (ROM) (KX-MB773UA) (Change 2)
[Program Ver. GAU1XE 

→ GAU1XF]

(*3)

1

*a

1

X

D to E