PTE-50-CET
Sheet 30
To repair it you just must do the following:
1. Disconnect the main supply.
2. Open carefully the
Front Panel
: extract the six screws and take care of no disconnecting
any other cables inside the equipment.
3. The channel fuses are located under the
Main Voltage Supply Section
:
Figure 12:
Fuses Box
4. Check the correspondent fuses of the channel (CH
1
, for instance) and change the broken
one. The fuses are 6.3 A (fast type) and were delivered with the equipment
5. Close carefully the
Front Panel
.
6. Connect the main supply and test again the channel outputs.
When you want to test the equipment outputs, remember that below 3% of the tap, there is no
feedback (neither in amplitude nor in phase angle), so you can get errors. Then you must perform
this kind of test with values over 3% of the chosen tap
3.5.3.2. Monitor input taps
These taps are located in the lower right hand part of the unit and consist of three, 4 mm female
connectors. These taps receive the input signals to the unit.
•
Black tap (0): this is the common tap.
•
Red tap: any DC or AC voltage between 5 and 250 V can be connected between the
common tap (0) and this one. The presence of voltage will activate the
Monitor
.
•
Green tap: between this tap and the common a DRY CONTACT can be connected. A close
contact will activate the
Monitor
.
Both inputs are protected by fuses, fast characteristic, 0.1 A..
The
Monitor
signal fuses are situated to the left and to the right of the monitor taps. The fuse on
the left protects the voltage-input tap and the fuse on the right protects the free contact input tap.
To remove the fuse, turn the cap anti-clockwise. These are fast fuses, 5x20 mm, 0.1 A.
CH1
CH2
CH3
+28 V
−
28 V
All fuses:
6.3 A / 5
×
20
mm
