WJ-SX550 - Panasonic Video Monitoring Service Manual Supplement (repair manual)

WJ-SX550

ORDER NO. AVS9412932S8

C

1 9 9 4       M a t s u s h i t a   C o m m u n i c a t i o n   I n d u s t r i a l   C o . ,   L t d .

A l l   r i g h t s   r e s e r v e d .   U n a u t h o r i z e d   c o p y i n g   a n d   d i s t r i b u t i o n
i s   a   v i o l a t i o n   o f   l a w .

Please file and use this supplement service manual together with original service manual for

Model No. WJ-SX550 Order No.AVS9412931C8

■

This supplement service Manual describes the Self Check System of the WJ-SX550 and WV-CU550.

1. Purpose of Self Check System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1

2. Execution Procedure of the Self Check System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1

3. Test Equipments Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    2

4. Connection for the Self Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2

5. Disassembling Procedure for Self Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3

6.1. Check Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4

6.2. Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

6.3. Self Check Procedure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

7.1. Check Menu (CPU Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7.2. Flow Chart (CPU Board)   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

7.3. Self Check Procedure (CPU Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7.4. Check Menu (Control Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.5. Flow Chart (Control Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.6. Self Check Procedure (Control Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.7. Check Menu (Alarm Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39

7.8. Flow Chart (Alarm Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41

7.9. Self Check Procedure (Alarm Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

43

7.10. Check Menu (Video Output Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

52

7.11. Flow Chart (Video Output Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53

7.12. Self Check Procedure (Video Output Board)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

WJ-SX550 CPU Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

WJ-SX550 Video Output Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21

WJ-SX550 Video Input Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

WJ-SX550 Control Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

WJ-SX550 Alarm Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

51

This service information is designed for experienced repair technicians only and is not designed for use by the
general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to
service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any
attempt to service or repair the product or products dealt with in this service information by anyone else could
result in serious injury or death.

Y 

– 1 –

8

This Self Check System for the  System Controller WV-

CU550 and the Matrix Switcher WJ-SX550 was designed

for testing the WV-CU550 and each Board of the WJ-

SX550 perfect in the Production line. However, many of

the procedures included here can be used for the field

service.

8

This Self Check System does not require a fully config-

ured System for testing. However, one of each of the fol-

lowing Boards are required: CPU Board, Control Board,

Alarm Board, Video Input Board and Video Output Board.

The execution of the Self Check System can be con-

trolled by either the 10-Key of the WV-CU550, the

Test Switches on the each Board, RS-485 line or RS-

232C line. 

Depending on how Instruction codes are input to the

System either 2-digit or 3-digit codes are used.

It is possible to use a Personal Computer for checking

the CPU Board, Control Board, Alarm Board and

Video Output Board of the WJ-SX550 and WV-CU550

after connect the Personal Computer to the RS-232C

Connector on the CPU Board of the WJ-SX550.

A 3-digit Instruction code is used. However, when

entering Instruction Codes directly on the Board

through the use of Dip Switches, A 2-digit code is

used.

It is possible to check the CPU Board, Control Board,

Alarm Board and Video Output Board of the WJ-

SX550 by use of the WV-CU550.

A 3-digit Instruction code by the 10-key of the WV-

CU550 is used. However a 2-digit Instruction code is

used with the WV-CU550 self check.

Different ways of entering to the Check Mode:

1)  Enter the Check mode by turning On the Power

Switch after setting the Test Switch on each Board or

the WV-CU550.

2)

Enter the Check mode by the Check Program

Execution Request message from the Personal

Computer during normal operation.

3)  When using the WV-CU550, the WV-CU550 trans-

mits the Check Program Execution Request mes-

sage to the CPU Board of the WJ-SX550.

8

The CPU Board transmits the Check Program

Execution Request message to the WV-CU550 and

to all the Boards of the WJ-SX550 if the CPU Board

has received the Check Program Execution

Request message.

8

The Check Program Execution Request message is

"STX  CPS  ETX".

The Self Check System is ended when the Power

Switch is turned off.

Self check through use of Test Switches alone:

8

The Microprocessor of the CPU Board controls and

checks some items of the Control Board, Video

Output Board and Video Input Board, therefore

these three Boards should be controlled by the CPU

Board for a more complete check.

– 2 –

Depending on System Configuration and level of testing,

some or all the following Test Equipments may be required

for the Self Check for the WV-CU550 System Controller

and the WJ-SX550 Matrix Switcher.

8

WJ-SX550 Matrix Switcher

8

WV-CU550 System Controller

8

Oscilloscope

8

Personal Computer

8

Printer

8

Video Monitor

8

Standard Straight RS-232C Cable

8

RS-485 Cable

8

Extension Board (Part Number: YWV0EA0339AN) as

shown in Fig. 3-1.

8

Test Modular Cable with one end having connection of

RXD and TXD reversed as shown in Fig. 3-2.

GND 1

T

X

(B) 2

T

X

(A) 3

R

X

(A) 4

R

X

(B) 5

GND 6

2 R

X

(B)

3 R

X

(A)

4 T

X

(A)

5 T

X

(B)

6 GND

1 GND

Approx.  1m

Fig. 4-1 shows the connection diagram for the Self Check of

the System Controller WV-CU550 and Matrix Switcher WJ-

SX550.

8

If necessary, connect the Personal Computer to the RS-

232C Port Connector on the CPU Board of the WJ-

SX550. 

8

If necessary, connect the Printer to the Printer Connector

on the CPU Board of the WJ-SX550. 

8

If necessary, connect the RGB Video Monitor to the

Printer Connector on the CPU Board of the WJ-SX550

when used (the Printer Connector provides the RGB sig-

nals and the Sync signal).

8

Connect the four Video Monitors to the MONITOR OUT1

to MONITOR OUT4 on the Video Output Board 1 of the

WJ-SX550. 

8

Connect the WV-CU550 to the DATA1 Modular

Connector on the Control Board of the WJ-SX550. 

8

Connect the probe of the Oscilloscope to desired the test

point in each step.

PC

Video

Monitor

Printer

Video

Monitor

Video

Monitor

Video

Monitor

Video

Monitor