6-8 250cx Series Maternal/Fetal Monitor Revision C
2036947-001
Parts List, Drawings, and Replacement: Assembly/Disassembly of FRUs
Assembly/Disassembly of FRUs
2025177-003 Speaker
1. Remove top cover. Keep screws aside.
2. Disconnect external display cable from J9 on DSP/Display PWA.
3. Remove nuts and flat washers fixing Speaker to mounting posts. Keep nuts and
washers aside.
4. Remove old Speaker from mounting posts. Keep existing nylon washers on
mounting posts.
5. Place new Speaker onto mounting posts on top of nylon washers.
6. Replace nuts and flat washers onto mounting posts over new Speaker.
7. Connect Speaker cable to Main board connector J10.
8. Connect external display cable from J9 on the DSP/Display PWA.
9. Replace top cover. Re-insert screws.
2025177-037 Main Board
1. Remove top cover. Keep screws aside.
2. Disconnect 8-conductor Inverter cable from DSP board connector J1.
3. Disconnect 20-conductor DSP-to-LCD Decoder ribbon cable from DSP board
connector J2.
4. Disconnect 10-conductor DSP-to-Keypad ribbon cable from DSP board
connector J5.
5. Disconnect external display cable from J9 on DSP/Display PWA.
6. Remove DSP board from Main board.
7. Remove two screws fastening Pneumatics assembly to chassis.
8. Remove Pneumatics assembly. Leave tubing connected to Front Bezel. The
tubing length should be sufficient.
9. Disconnect power supply cable from Main board connector J8.
10. Disconnect speaker cable from Main board connector J10.
11. Remove four screws fastening the Comm. Board to the chassis.
12. Remove Comm. board from Main board.
13. Remove six screws that fasten Main board to chassis.
14. Remove Main board from chassis.
15. Remove nuts from Main board PH1, 2, & 3 connectors that fasten EMI Plate to
Main board.
16. Place EMI Plate and Gasket onto new Main board. Use nuts from Main board
PH1, 2, & 3 connectors to fix Plate to Main board.
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