KX-DT543RU, KX-DT543RU-B, KX-DT546RU, KX-DT546RU-B - Panasonic PBX Service Manual Supplement (repair manual). Page 2

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2
KX-DT543RU/KX-DT543RU-B/KX-DT546RU/KX-DT546RU-B
1 CHANGES
1.1.
Subject 
KX-DT543RU
KX-DT543RU-B
KX-DT546RU
KX-DT546RU-B
SUFFIX LOCATION
1.2.
Replacement Parts List
Suffix
Reason for suffix change
A to B
Software version up.
Suffix
Reason for suffix change
A to B
Software version up.
Suffix
Reason for suffix change
A to B
Software version up.
Suffix
Reason for suffix change
A to B
Software version up.
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 
Cabinet and Electrical Parts
11
PNBH1012Z1
PNBH1012Y1
HOOK BUTTON(BLACK)
1
8
W
---
11
PNBH1012Z2
PNBH1012Y2
HOOK BUTTON(WHITE)
1
8
W
---
13
PNBC1500Y1
PNBC1500W1
CURSOR KEY(WHITE)
1
8
W
---
13
PNBC1500Z1
PNBC1500X1
CURSOR KEY(BLACK)
1
8
W
---
14
PNHR1775Z
PNHR1775Y
HOLDER (ENTER KEY)
1
8
W
---
Main Board Parts
CN400
K1MN14BA0238
K1MY14BA0683
CONNECTOR
1
8
V
---
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