I 2 C Bus; Touch-Screen Interface; Lcd Display Module; Table 11-5: Dc Power Supply Acceptable Levels - Teledyne t100 Operation Manual

Teledyne API - T100 UV Fluorescence SO
2
11.6.3. I C BUS
11.6.4.

TOUCH-SCREEN INTERFACE

11.6.5.

LCD DISPLAY MODULE

06807F DCN7335
Analyzer
2

Table 11-5: DC Power Supply Acceptable Levels

POWER
VOLTAGE FROM TEST POINT
SUPPLY
PS1 +5
PS1 +15
PS1 -15
PS1 AGND
PS1 Chassis
PS2 +12
PS2 DGND
2
Operation of the I C bus can be verified by observing the behavior of D1 on the relay
PCA & D2 on the Valve Driver PCA . Assuming that the DC power supplies are
operating properly, the I
the Valve Driver PCA are flashing
There is a problem with the I
Driver PCA are ON/OFF constantly.
Verify the functioning of the touch screen by observing the display when pressing a
touch-screen control button. Assuming that there are no wiring problems and that the
DC power supplies are operating properly, but pressing a control button on the touch
screen does not change the display, any of the following may be the problem:
•
The touch-screen controller may be malfunctioning.
•
The internal USB bus may be malfunctioning.
You can verify this failure by logging on to the instrument using APICOM or a terminal
program. If the analyzer responds to remote commands and the display changes
accordingly, the touch-screen interface may be faulty.
Verify the functioning of the front panel display by observing it when power is applied
to the instrument. Assuming that there are no wiring problems and that the DC power
supplies are operating properly, the display screen should light and show the splash
screen and other indications of its state as the CPU goes through its initialization
process.
CHECK RELAY BOARD TEST POINTS
TO TEST POINT
NAME # NAME
DGND 1
AGND 3
AGND 3
AGND 3 DGND
DGND 1 Chassis
+12V Ret 6
+12V Ret 6 DGND
2
C bus is operating properly if: D1 on the relay PCA and D2 of
2
C bus if both D1 on the relay PCA and D2 of the Valve
Troubleshooting & Service
MIN V
#
+5 2 +4.80
+15 4 +13.5
-15V 5 -14.0
1 -0.05
N/A -0.05
+12V 7 +11.8
1 -0.05
MAX V
+5.25
+16.0
-16.0
+0.05
+0.05
+12.5
+0.05
235