KX-TG6621RUB, KX-TG6621RUM, KX-TG6621UAB, KX-TG6621UAM, KX-TG6621CAB, KX-TG6621CAM, KX-TG6622CAB, KX-TGA661RUB, KX-TGA661RUM (serv.man2) - Panasonic Telephone Service Manual Supplement (repair manual). Page 2

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KX-TG6621RU/KX-TG6621UA/KX-TG6621CA/KX-TG6622CA/KX-TGA661RU
1 REPLACEMENT PARTS LIST
1.1.
REFERENCE CHART
1.2.
ORIGINAL AND NEW PARTS COMPARISON LISTS
Change of the Suffix Code (Base Unit)
Serial No.Label tells you the suffix code as follows.
Change of the Suffix Code (Handset)
Serial No.Label tells you the suffix code as follows.
Reason for Change
*The following items (1-8) indicate the reason for change. See the “Notes” column for each part in ORIGINAL AND NEW PARTS 
COMPARISON LISTS.
1. Improve performance
Remarks: 
*c: To share the parts with other models.
2. Change of material or dimension
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other
Suffix Code
Reasons of change
A to B
To decrease the influence on power outage operation caused by parts dispersion.
(There is no part change in the parts list.)
B to C
To share the parts with other models. (There is no part change in the parts list.)
Suffix A 
ψ C
C
Serial No. Label
(Example)
Suffix Code
Reasons of change
A to B
To decrease the influence on power outage operation caused by parts dispersion.
(There is no part change in the parts list.)
B to C
To share the parts with other models. (There is no part change in the parts list.)
Suffix A 
ψ C
C
Serial No. Label
(Example)
Ref. No.
Part No.
Part Name & Description
Pcs/
Set
Remarks
Notes
Time of Change
Original (Old)
New
(Suffix)
Main P.C.Board Parts(Base Unit)
Page of 8
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