Configuration Service
3.2 Configuration
The main PCB, which is shown in figure 4, contains the following
jumpers, measurement points and adjustment possibilities:
Reference Factory
setting
or
value/range
Function
W1
Open
If closed the computer is
reset
W2
Closed
Connecting/disconnecting
power supply from rest of
circuitry
W3 120
kHz,
±
2 kHz
Switch frequency of switch
mode power supply
W4
Pin 2 and 3 closed
Select 3606 XP/E backlight
TP1
0 - 3.6 V DC
Output of light sensor
R38 120
kHz,
±
2 kHz
Adjustment
of
switch
frequency
Table 5
Configuration
The jumper W2 can be used to remove the connection between the
switch mode power supply and the rest of the circuitry including
computer as well as backlight inverter. The pin assignments for W2
are as follows. Please notice that ground connection can only be
disconnected when the PCB is NOT mounted on the intermediate
plate.
19Mar07 Page
3-3
Summary of Contents for TT-3606E
Page 1: ...Message Terminal TT 3606E Installation and Service Manual ...
Page 2: ......
Page 6: ...This page is intentionally left blank ...
Page 8: ...Table of Contents This page is intentionally left blank Page ii 19Mar07 ...
Page 16: ...Installation Mounting This page is intentionally left blank Page 1 8 19Mar07 ...
Page 27: ...Configuration Service Figure 4 Main PCB 19Mar07 Page 3 5 ...
Page 28: ...Service Configuration This page is intentionally left blank Page 3 6 19Mar07 ...
Page 35: ...Special I O Technical description This page is intentionally left blank 19Mar07 Page 4 7 ...
Page 36: ......
Page 38: ...Mechanical outlines Figure 7 TT 3606E Message Terminal Page 5 2 19Mar07 ...