KX-DT321RU, KX-DT321RU-B - Panasonic PBX Service Manual Supplement (repair manual). Page 2

2

JS

KXDT321RU

KXDT321RUB

Suffix

Reason for suffix change

D to E

Change the parts

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)

Cabinet and Electrical Parts
3

L5DBBYY00001

LIQUID CRYSTAL DISPLAY

1

8

V

Main Board Parts
LED4

B3AAB0000111

DIODE(SI)

1

8

Y

E

C1

F2G1H3300004

CAPACITOR, 33

F

1

8

V

C526

F2G0J1010014

CAPACITOR, 100

F

1

8

V

R313

ERJ3GEYJ270

RESISTOR, 6.8



1

8

Y

E