KX-UT113RU, KX-UT113RU-B, KX-UT123RU, KX-UT123RU-B (serv.man4) — Panasonic PBX Service Manual Supplement (repair manual). Page 2

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2
KX-UT113RU/KX-UT113RU-B/KX-UT123RU/KX-UT123RU-B
1 CHANGES
1.1.
Replacement Parts List
KX-UT123RU
KX-UT113RU
NM
KXUT113RU
KXUT113RUB
KXUT123RU
KXUT123RUB
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
7
PNBH1012Z2
PNBH1012Y2
HOOK BUTTON (WHITE)
1
8
W
---
7
PNBH1012Z1
PNBH1012Y1
HOOK BUTTON (BLACK)
1
8
W
---
Main Board Parts
Q505
B1CHPC000005
B1CHPC000014
TRANSISTOR(SI)
1
8
V
---
T403
G5BYC0000030
G5BYC0000040
TRANSFORMER
1
8
V
---
Ref. No.
Part No.
Part Name & Description
Pcs
Remarks
Notes
Time of change 
(Suffix)
Original (Old)
New 
Cabinet and Electrical Parts
7
PNBH1012Z2
PNBH1012Y2
HOOK BUTTON (WHITE)
1
8
W
---
7
PNBH1012Z1
PNBH1012Y1
HOOK BUTTON (BLACK)
1
8
W
---
Main Board Parts
Q505
B1CHPC000005
B1CHPC000014
TRANSISTOR(SI)
1
8
V
---
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