Rohde & Schwarz 1164.4391.03, Service Manual

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R&S FSP Module Replacement
1164.4556.82 3.55 E-1
Replacing Trigger A230 (Option R&S FSP-B6)
(See chapter 5, spare parts list, item 1800, and drawings 1164.4391 and 1129.8613.)
The board is installed at the rear of the instrument in front of the power supply.
Opening the Instrument and Removing the Board
Switch off unit, disconnect it from power supply, unscrew 4 rear-panel feet (450) and pull off
enclosure (410) towards rear.
Undo the two countersunk screws (260) at the top of the instrument and the three countersunk
screws (250) at the fan side, lift the cover at the top (240) of the instrument to the left side and take
off.
Place the instrument onto its side and remove all connecting RF cables to board on the bottom of the
instrument.
Pull out the board towards the top of the instrument.
Note: The board can be disconnected from the motherboard connector by carefully pressing
through the motherboard slots from the bottom.
Installing the New Module and Completing the Instrument
Plug the new board into the instrument and reconnect all RF cables.
Note: Please observe the labelling on the motherboard.
Mount top cover (240) and fasten it in place by 2 countersunk screws (260) and three countersunk
screws (250).
Slide on enclosure (410) and screw on 4 rear-panel feet (450).
A cold boot is necessary after replacing the TRIGGER module.
See section "Performing a Cold Boot" in this chapter.
Connect power cable, switch on power switch and press ON key.
After starting the instrument check for system messages:
- [ SETUP : SYSTEM INFO : SYSTEM MESSAGES ]
Start selftest and check results to ensure that no errors occurred:
- [ SETUP : SERVICE : SELFTEST ], then [SELFTEST RESULT]
Start system error correction and check the result to ensure that no errors occurred:
- [ CAL : CAL TOTAL ] , then [ CAL RESULTS ]
Check trigger level according to chapter 1 and adjust if required.
Create a backup of the EEPROM data (see chapter 2, section "Adjustment of Module Data").