KX-TDA3174XJ (serv.man2) - Panasonic PBX Service Manual Supplement (repair manual). Page 2

2

KM

KXTDA3174XJ

Suffix

Reason for suffix change

A to B

Change of FET to FET unit on Main Board due to suplier request.

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)

MAIN BOARD PARTS
R744

ERJ2GEJ220

RESISTOR, 0Ω

1

8

Y

B

Q710

B1DFBL000002

TRANSISTOR(SI)

1

8

Y

B

C709, C721

F2GZZ4R70001

CAPACITOR, 4.7μF

2

8

V

R733

ERJ2GEYJ102

RESISTOR, 470Ω

1

8

W