DOWNLOAD Panasonic KX-MB283RU / KX-MB783RU (serv.man3) Service Manual ↓ Size: 1.82 MB | Pages: 49 in PDF or view online for FREE

ORDER NO. KMF0812995SE

(for Russia)

(for Ukraine)

PAGE

PAGE

1 REPLACEMENT PARTS LIST--------------------------------- 2

1.1. REFERENCE CHART------------------------------------ 2
1.2. INTRODUCTION ------------------------------------------ 2
1.3. ORIGINAL AND NEW PARTS COMPARISON

LISTS --------------------------------------------------------- 3

2 CORRECTION (PFUP1657ZA-1 ONLY) -------------------- 4

2.1. SCHEMATIC DIAGRAM (MAIN BOARD (3))------- 4
2.2. PRINTED CIRCUIT BOARD---------------------------- 5

2.2.1. MAIN BOARD: COMPONENT VIEW ------------ 5
2.2.2. MAIN BOARD: BOTTOM VIEW------------------- 6

3 CHANGE (PFUP1657YA ONLY) ------------------------------ 7

3.1. Technical Descriptions ----------------------------------- 7

3.1.1. CIS CONTROL SECTION -------------------------- 7
3.1.2. Main Board Section ---------------------------------- 8

3.2. TROUBLESHOOTING DETAILS --------------------- 11

3.2.1. USB SECTION --------------------------------------- 11
3.2.2. LAN SECTION ---------------------------------------13
3.2.3. MAIN BOARD SECTION --------------------------16

3.3. Schematic Diagram (KX-MB283RU) ----------------18

3.3.1. MAIN BOARD (1) ------------------------------------18
3.3.2. MAIN BOARD (2) ------------------------------------22
3.3.3. MAIN BOARD (3) ------------------------------------24
3.3.4. MAIN BOARD (4) ------------------------------------26

3.4. Schematic Diagram (KX-MB783RU) ---------------- 28

3.4.1. MAIN BOARD (1) ----------------------------------- 28
3.4.2. MAIN BOARD (2) ----------------------------------- 32
3.4.3. MAIN BOARD (3) ----------------------------------- 34
3.4.4. MAIN BOARD (4) ----------------------------------- 36

3.5. Printed Circuit Board ------------------------------------ 39

3.5.1. MAIN BOARD: COMPONENT VIEW ---------- 39
3.5.2. MAIN BOARD: BOTTOM VIEW ----------------- 40

3.6. REPLACEMENT PARTS LIST ----------------------- 41

3.6.1. MAIN BOARD (KX-MB283RU) ------------------ 41
3.6.2. MAIN BOARD (KX-MB783RU) ------------------ 44

2

There are two kinds of Main Board, a new type and an old (original) type. 
The service of new type and old type Main Boards should proceed according to each respective procedure.
When replacing the Main Board or parts on the Main Board, first confirm if it is a new or old type Main Board by referring to the
table below.

OFor each type Main Board, see the contents of this supplement about the item of the table below.

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

Notes:
(*1): When Main Board is an old (original) type.
(*2): When Main Board is a NEW type.

Remarks: 
*a : To enhance the quality.
*n : To correct error writing.

2. Change of material or dimension
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other

Old type, PNWP1MB283RU

A

PFUP1657ZA-1

New type, PNWP1B283RU1

B or later

PFUP1657YA

Old type, PNWP1MB783RU

A

PFUP1657ZA-1

New type, PNWP1B783RU1

B or later

PFUP1657YA

R573

CN514

1

2

R534

CN509

1

4

09

CN502

C525

1

D503

L502

C671

C673

R452

C491

PbF

PFUP1657ZA-1

Q524

E

E

KX-MB283/783RU Service Manual

(Order No.KMF0804159CE)

Contents of Supplement

Main unit bareboard

Old type:

PFUP1657ZA-1

New type: 

PFUP1657YA

6. Technical Descriptions

6.6. CIS CONTROL SECTION

*1

3.1.1. CIS CONTROL SECTION  Refer to P.7

6.17. Main Board Section

*1

3.1.2. Main Board Section Refer to P.8

12.3. TROUBLESHOOTING DETAILS

12.3.22. USB SECTION

*1

3.2.1. USB SECTION Refer to P.11

12.3.23. LAN SECTION

*1

3.2.2. LAN SECTION  Refer to P.13

3

(*1: See to KX-MB283/783RU Service Manual. (

Order No.

KMF0804159CE))

Q Change of the Suffix Code 

Serial No.Label tells you the suffix code as follows.

12.3.24. MAIN BOARD SECTION

*1

3.2.3. MAIN BOARD SECTION  Refer to P.16

16 Schematic Diagram

16.2. KX-MB283RU MAIN BOARD

Service  Manual  and  2.1 SCHEMATIC DIA-
GRAM (MAIN BOARD (3)) Refer to P.4

3.3. Schematic Diagram (KX-MB283RU) 
Refer to P.18

16.3. KX-MB783RU MAIN BOARD

Service  Manual  and  2.1 SCHEMATIC DIA-
GRAM (MAIN BOARD (3)) Refer to P.4

3.4. Schematic Diagram (KX-MB783RU) 
Refer to P.28

17 Printed Circuit Board

17.1.1. MAIN BOARD: COMPONENT VIEW 2.2.1 MAIN BOARD: COMPONENT VIEW

Refer to P.5

3.5.1. MAIN BOARD: COMPONENT VIEW  
Refer to P.39

17.1.2. MAIN BOARD: BOTTOM VIEW

2.2.2 MAIN BOARD: COMPONENT VIEW
Refer to P.6

3.5.2. MAIN BOARD: BOTTOM VIEW Refer 
to P.40

18.2. REPLACEMENT PARTS LIST

18.2.2. MAIN BOARD (KX-MB283RU)

Parts List in Service Manual and 1.3 ORIGI-
NAL AND NEW PARTS COMPARISON
LISTS Refer to P.3

3.6.1. MAIN BOARD (KX-MB283RU) Refer 
to P.41

18.2.3. MAIN BOARD (KX-MB783RU)

Parts List in Service Manual and 1.3 ORIGI-
NAL AND NEW PARTS COMPARISON
LISTS Refer to P.3

3.6.1. MAIN BOARD (KX-MB783RU) Refer 
to P.44

KX-MB283/783RU Service Manual

(Order No.KMF0804159CE)

Contents of Supplement

Main unit bareboard

Old type:

PFUP1657ZA-1

New type: 

PFUP1657YA

Ref. No.

Part No.

Part Name & Description 

Pcs/

Set

Remarks

Time of Change

Original (Old)

(Suffix)

LOWERSIDE CABINET
345

PFHX1937Z

COVER (*2)

0

*a

6

---

A to B

(KX-MB283RU/

KX-MB783RU)

MAIN BOARD (KX-MB283RU)
PCB1

PNWP1MB283RU

MAIN BOARD ASS'Y (RTL) only new
type (*2)

1

*a

1

W

A to B

Q527

----------

TRANSISTOR(SI) only old type (*1)
See to SCHEMATIC DIAGRAM (MAIN
BOARD (3)) (P.4) and PRINTED CIR-
CUIT BOARD (P.5)

1

*n

1

---

---

MAIN BOARD (KX-MB783RU)
PCB1

PNWP1MB783RU

MAIN BOARD ASS'Y (RTL) only new
type (*2)

1

*a

1

W

A to B

Q527

----------

TRANSISTOR(SI) only old type (*1)
See to SCHEMATIC DIAGRAM (MAIN
BOARD (3)) (P.4) and PRINTED CIR-
CUIT BOARD (P.5)

1

*n

1

---

---

4