Read Panasonic KX-TG8421CAT / KX-TGA840UAT (serv.man4) Service Manual Supplement online
2
KX-TG8421CAT/KX-TGA840UAT
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
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
*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
Note:
Parts with *1 marking have been changed at the same time for charging detection.
The change shall be managed with a serial number.
Parts with *1 marking have been changed at the same time for charging detection.
The change shall be managed with a serial number.
Remark:
*c: To share the parts with other models
*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
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other
Suffix Code
Reasons of change
B to C
Due to revision of handset suffix (B to C). (There is no part change in the parts list.)
C to D
To share the parts with other models.(There is no part change in the parts list.)
Suffix Code
Reasons of change
B to C
Main P.C. Board of Handset is changed from PNLB1104ZB-GW to PNLB11040YA-GW displayed on Printed Cir-
cuit Board.
cuit Board.
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)
D1
D1
B0JCME000035
D0GLR00Z0001
DIODE (SI)
1
*c
4
V
---
D9
MA111
----------
DIODE (SI)
0
*c
6
---
---
D22
B0ECKM000008
D0GLR00Z0001
DIODE (SI)
*1
1
*c
4
Y
---
RA501
EXB28VR000X
D1H810240004
RESISTOR ARRAY
1
*c
4
W
---
R55, R56
ERJ1TYJ3R9U
ERJ1TYJ5R6U
RESISTOR, 5.5
Ω
*1
2
*c
4
Y
---
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