Read Panasonic WJ-SX550 Service Manual Supplement online
– 55 –
7.12. Self Check Procedure for the Video
Output Board
8
Set the Extension Board between the Mother Board and
the Video Output Board.
8
Turn On the Power Switch of the Matrix Switcher WJ-
SX550.
8
Turn Off the Power Switch of the System Controller WV-
CU550.
8
While pressing the MON and 2 Switches simultaneously,
turn On the Power Switch of WV-CU550.
500 Original Setting at Factory
8
Enter the Instruction Code 500 by the 10-key of the WV-
CU550 or Instruction Code 0 by the SW1-3, SW1-4 and
SW6-1 on the Video Output Board.
8
Press the GO key or set the SW6-2 from Off to On on the
Video Output Board, the original data set at the Factory is
loaded.
501 ROM Check
8
Enter the Instruction Code 501 by the 10-key of the WV-
CU550 or Instruction Code 1 by the SW1-3, SW1-4 and
SW6-1.
8
Press the GO key or set the SW6-2 from Off to On.
8
Action performed: Calculate the Check Sum of the ROM
IC, then display that value on the Video Monitor as shown
in Fig. 7-12-1, and then transmit the Data “STX XXXX
ETX” to the RS-232C line (RS232C Port Connector of the
CPU Board).
Note: The XXXX is the calculated result of the Data of
the Check Sum Value.
Fig. 7-12-1
502 RAM Check (basically used without Personal
Computer)
8
Enter the Instruction Code 502 by the 10-key of the WV-
CU550 or Instruction Code 02 by the SW1-3, SW1-4 and
SW6-1.
8
Press the GO key or set the SW6-2 from Off to On.
8
Action performed: Write the Data 00(H) to FF(H) to the
specific address and then check these Data after reading
for the RAM Data check. Also check the RAM Address by
the Marching Method, then display OK (both Data are
OK) or NG (other conditions) on the Video Monitor as
shown in Fig. 7-12-2, and then transmit the Data “STX
502 OK ETX” or “STX 502 NG ETX” to the RS-532C line.
Fig. 7-12-2
503 DPRAM Check (basically used without
Personal Computer)
8
Enter the Instruction Code 503 by the 10-key of the WV-
CU550 or Instruction Code 3 by the SW1-3, SW1-4 and
SW6-1.
8
Press the GO key or set the SW6-2 from Off to On.
8
Action performed: Write the Data 00(H) to FF(H) to the
specific address and then check these Data after reading
for the DRAM Data check. Also check the DRAM Address
by the Marching Method, then display OK (both Data are
OK) or NG (other conditions) on the Video Monitor as
shown in Fig. 7-12-3, and then transmit the Data “STX
503 OK ETX” or “STX 503 NG ETX” to the RS-532C line.
Fig. 7-12-3
504 Video Output/Character Generator (Reversed
Black and White) Check
8
Enter the Instruction Code 504 by the 10-key of the WV-
CU550 or Instruction Code 4 by the SW1-3, SW1-4 and
SW6-1.
8
Press the GO key or set the SW6-2 from Off to On.
Self Check
IDLE
RAM DATA – OK
RAM ADDR
RAM ADDR
–
NG
(For Example)
Video Monitor
Video Monitor
DPRAM DATA – OK
DPRAM ADDR
DPRAM ADDR
–
NG
(For Example)
Video Monitor
Video Monitor
Click on the first or last page to see other WJ-SX550 service manuals if exist.