MES SQA-Vision Service Manual page 17

SQA-Vision
SECTION 2:

SN #5229
and above

WARNING:
The two ends of
the Data flat cable
must be connected
in the same way at
each of the nodes
(Operation
monitor, Backlight
PCB and
Motherboard) or
the LCD may be
burned!
Note: For more
detailed
explanations
regarding blank
screen issues,
please refer to the
"blank screen
technical bulletin"
in the appendix
section



Edition rev.: Jan 2020
Service Manual Version 109.13.4
Re-install SQA-Vision software.
If the software was installed successfully but the problem remains - check the LCD flat
cable:
 MB side: Open the SQA-Vision and verify that the LCD flat cable is oriented with
the red lined side toward J1 connector (as shown in the picture below).
 Replace the long flat cable which connects the main board and the Backlight PCB.
(Item #KHD-908-000858)
 If replacing the long flat cable does not work – Replace the short flat cable which
connects the LCD screen and the Backlight PCB. (Item#V-H-01411-00)
 If replacing the short flat cable does not work - Replace backlight PCB.
(Item#V-B-01410-00)
Note the alignment of the
red line on the Data cable
If replacing the backlight PCB does not work - replace the processor on the main board
(see Appendix section for instructions)
If replacing the processor does not work, re-start the SQA-Vision and see if the LCD
operational screen is still blank. If yes, replace the screen:
 Disconnect the operational display data and power cable - note the four screws.
 Replace the screen & reconnect the data and power cables
If the problem persists with the new screen – perform an MBOB replacement OR
send the SQA-Vision back to the manufacturer (MES) for a repair RMA
17