KX-NS500UC - Panasonic PBX Service Manual Supplement (repair manual). Page 2

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2
KX-NS500UC
1 CHANGES
1.1.
Subject 
1.2.
Replacement Parts List
Suffix
Reason for suffix change
A to B
Software version up.
B to C
Software version up.
C to D
Change PDS.
D to F
Regarding DSP-IC Change.
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:
2. Change of material or dimension
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other
Interchangeability Code (Symbols: B) Following V-Z interchange abilities are indicated on the Notes in the bottom column.
Parts
Set Production
V Original
New
Early (before change)
Late (after change)
Original or new parts may be used in early or late production sets.
Use original parts until exhausted, then stock new parts.
W Original
New
Early (before change)
Late (after change)
Original parts may be used in early production sets only. New parts may be used in early or
late production sets. Use original parts where possible, then stock new parts.
X Original
New
Early (before change)
Late (after change)
New parts only may be used in early or late production sets.
Stock new parts.
Y Original
New
Early (before change)
Late (after change)
Original parts may be used in early production sets only. New parts may be used in late
production sets only. Stock both original and new parts.
Z Other
Ref. No.
Part No.
Part Name & Description
Pcs Remarks
Notes
Time of change 
(Suffix)
Original (Old)
New 
Accessories and Packing Materials
A6
PNJA1135Z
--------
Cord
0
6
-
Mother Board Parts
IC200A, C , E, G , I , K, 
M, O
C1CB00003834
C1CB00004294
IC
8
8
V
JK100A, C, E,  
JK200A, C, E, I, M,         
JK300A
K2LC1YYB0031
K2LC1YYB0071
JACK/SOCKET
9
8
V
IC101A, C , E
C2HBBY000149
C2HBBY000153
IC
3
8
Y
F
IC103A, C , E
PNWI2NS300BX
--------
IC
0
6
-
F
R137A, C , E       
R138A, C , E       
R139A, C , E
ERJ2GEJ330
--------
RESISTOR, 33
0
6
-
F
R140A, C, E
----------
ERJ2GEJ103
RESISTOR, 10k
3
5
Y
F
R152A, C, E
EXB28V103JX
--------
COMPONENTS PARTS
0
6
Y
F
R154A, C, E           
R155A, C ,E       
R156A, C, E      
R157A, C, E
----------
ERJ2GE0R00
RESISTOR, 0
12
5
Y
F
IC402, IC403
C0JBAZ002713
C0JBAZ003224
IC
2
8
V
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