Sony KDE-55XBR950 (serv.man2) Service Manual ▷ View online
-33-
Exists on half
upside?
Y
N
Turn off the power.
Replace ABUSU board
(Backup part).
Turn on the main power.
Normal?
ABUSU board is
defective.
N
Y
Y
Turn off the power.
Replace LOGIC board (Backup part)
Turn on the power.
Normal?
LOGIC board is
defective.
Y
N
Turn off the power.
Replace signal cable between
LOGIC and ABUSU.
Turn on the power.
Normal?
Y
Signal cable is
defective.
ADM is defective.
(Panel chassis is
defective.)
N
N
Turn off the power.
End of analysis
Vertical line of
different color
does appear?
(2)
(3)
(4)
-34-
Y
Turn off the power.
Replace ABUSD board (Backup part).
Turn on the power.
Normal?
ABUSD board is
defective.
N
Turn off the power.
Replace LOGIC board (Backup part).
Turn on the power.
Normal?
LOGIC board is
defective.
Y
Turn off the power.
Replace signal cables between LOGIC
and ABUS.
Turn on the power.
N
Panel is defective.
(Panel chassis is
defective.)
Turn off the main power.
End of analysis
Normal?
Y
Signal cable is
defective.
ADM is defective.
(Panel chassis is
defective.)
N
(3)
(4)
-35-
4.6.3 "Horizontal bar" Problem analysis procedure
Horizontal bar
Normal?
Y-SUS board is
defective.
Y
Turn off the power.
Replace Y-SUS board (Backup part).
Turn on the power.
Turn off the power.
Replace Y-SUS board (Defective product).
Replace X-SUS board (Backup part)
Turn on the power.
N
Normal?
X-SUS board is
defective.
Panel chassis is
defective.
Y
N
Turn off the power.
End of analysis
Turn off the power.
Replace X-SUS board (Defective product).
Replace ABUS-D2 and D3 board (Backup part)
Turn on the power.
Normal?
ABUS-D2 and D3 board
are defective.
Y
N
-36-
4.7 PROBLEM ANALYSIS USING A PERSONAL COMPUTER
4.7.1 Connecting a computer
(1) Set the module in accordance with Chapter 4.4.
(2) Connect the RS-232C terminal of the computer to the RS-232C terminal of the interface
board.
(3) Turn on the main power to the interface board. (Red LED goes on.)
4.7.2 Preparing a computer
(1) Turn on the main power to the computer.
(2) Set the PDPgo switch on the interface board to ON and turn on the main power to the
module.
(3) For computer running MS-DOS:
C: \ >FHPP1<ENTER>
For computer running WINDOWS:
Start menu
→ Run → FHPP1<ENTER>
(4) The following menu screen appears.
POWER indicator (red LED)
*1: Use COM1: for the computer's communication port.
*2: Set the communication setup as follows.
*2: Set the communication setup as follows.
Speed: 9600 bps
Data: 7 bits
Parity: none
Stop bit: 1 bit
Data: 7 bits
Parity: none
Stop bit: 1 bit
In Windows, restart the computer after setting the communication setup.
*3: If the program starts up while the module standby power is not yet turned on, the menu
screen will not be displayed.
screen will not be displayed.
Main menu
Click on the first or last page to see other KDE-55XBR950 (serv.man2) service manuals if exist.