DOWNLOAD Panasonic KX-MB773RU / KX-MB773UA (serv.man2) Service Manual ↓ Size: 1.6 MB | Pages: 33 in PDF or view online for FREE

ORDER NO. KMF0812006SE

(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. MAIN BOARD SECTION --------------------------13

3.3. Schematic Diagram --------------------------------------16

3.3.1. MAIN BOARD (1) ------------------------------------16
3.3.2. MAIN BOARD (2) ------------------------------------20
3.3.3. MAIN BOARD (3) ------------------------------------22
3.3.4. MAIN BOARD (4) ------------------------------------24

3.4. Printed Circuit Board-------------------------------------27

3.4.1. MAIN BOARD: COMPONENT VIEW ---------- 27
3.4.2. MAIN BOARD: BOTTOM VIEW ----------------- 28

3.5. REPLACEMENT PARTS LIST ----------------------- 29

3.5.1. MAIN BOARD ---------------------------------------- 29

2

There are three kinds of Main Board, a new type, old type1 and old type2.
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.

(The fifth digit of the serial number is the suffix.)

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 type2.
(*2): When Main Board is a NEW type.

Remark: 
*a : To enhance the quality.

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

Old type1, PFWP1MB773RU

A

PFUP1657ZA

Old type2, PFWP1MB773RU

B or C

PFUP1657ZA-1

New type, PNWP1MB773RU

D or later

PFUP1657YA

Old type1, PFWP1MB773UA

A

PFUP1657ZA

Old type2, PFWP1MB773UA

B or C

PFUP1657ZA-1

New type, PNWP1MB773UA

D 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-MB773RU/UA Service Manual

(Order No.KMF0709108CE)

Contents of Supplement

Main unit bareboard

Old type1: 

PFUP1657ZA

Old type2:

PFUP1657ZA-1

New type: 

PFUP1657YA

6. Technical Descriptions

6.6. CIS CONTROL SECTION

*1

*1

3.1.1. CIS CONTROL SECTION  
Refer to P.7

6.17. Main Board Section

*1

*1

3.1.2. Main Board Section Refer 
to P.8

12.3. TROUBLESHOOTING DETAILS

3

(*1: See to KX-MB773RU/UA Service Manual. (

Order No.

KMF0709108CE))

Q Change of the Suffix Code 

Serial No.Label tells you the suffix code as follows. (The change from suffix B to C is in supplement 3.)

OKX-MB773RU/KX-MB773UA

12.3.22. USB SECTION

*1

*1

3.2.1. USB SECTION Refer to P.11

12.3.23. MAIN BOARD SECTION

*1

*1

3.2.2. MAIN BOARD SECTION  
Refer to P.13

16 Schematic Diagram

16.2. MAIN BOARD (1)

*1

*1

3.3.1. MAIN BOARD (1) Refer to 
P.16

16.3. MAIN BOARD (2)

*1

*1

3.3.2. MAIN BOARD (2) Refer to 
P.20

16.4. MAIN BOARD (3)

*1

Service Manual and 2.1 SCHE-
MATIC DIAGRAM (MAIN BOARD
(3)) Refer to P.4

3.3.3. MAIN BOARD (3) Refer to 
P.22

16.5. MAIN BOARD (4)

*1

*1

3.3.4. MAIN BOARD (4) Refer to 
P.24

17 Printed Circuit Board

17.1.1. MAIN BOARD: COMPONENT VIEW

*1

2.2.1 MAIN BOARD: COMPO-
NENT VIEW Refer to P.5

3.4.1. MAIN BOARD: COMPO-
NENT VIEW  Refer to P.27

17.1.2. MAIN BOARD: BOTTOM VIEW

*1

2.2.2 MAIN BOARD: COMPO-
NENT VIEW Refer to P.6

3.4.2. MAIN BOARD: BOTTOM 
VIEW Refer to P.28

18.2. REPLACEMENT PARTS LIST

18.2.2. MAIN BOARD

*1

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

3.5.1. MAIN BOARD Refer to P.29

KX-MB773RU/UA Service Manual

(Order No.KMF0709108CE)

Contents of Supplement

Main unit bareboard

Old type1: 

PFUP1657ZA

Old type2:

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

---

C to D

(KX-MB773RU/

KX-MB773UA)

MAIN BOARD
PCB1

PFWP1MB773RU

MAIN BOARD ASS'Y (RTL), KX-
MB773RU only new type (*2)

1

*a

1

W

C to D

PCB1

PFWP1MB773UA

MAIN BOARD ASS'Y (RTL), KX-
MB773UA only new type (*2)

1

*a

1

W

C to D

Q527

----------

TRANSISTOR(SI) only old type2 (*1)
See to SCHEMATIC DIAGRAM (MAIN
BOARD (3)) (P.4) and PRINTED CIR-
CUIT BOARD (P.5)

1

*a

1

Y

A to B

4