DH Instruments PPC2 AF - Front Panel Removal and Replacement; Display Removal and Replacement

5. MAINTENANCE, ADJUSTMENTS AND CALIBRATION
Page 77 © 1998 DH Instruments, Inc.
5.1.2.2 FRONT PANEL REMOVAL AND REPLACEMENT
See Figures .1, .7 and .9.
Remove electrical power and shut off pressure prior to executing this procedure.
1. Remove top panel (fig 7)
2. Remove front panel.
2.1. Remove ribbon cable P/N 401278 (W5) (fig 1)
2.2. Remove the four (4) mounting nuts P/N 100970-Z (fig 1).
2.3. Remove front panel assembly from instrument
3. Remove keypad interface board
3.1. Remove the ribbon cable at the interface board P/N 401093 (fig 9).
3.2. Remove mounting screws P/N 100984-Z (fig 9).
4. Remove display
4.1. Remove standoff P/N 100171 (fig 9)
4.2. Remove mounting screws P/N 100970-Z (fig 9)
5. Replace front panel assembly
6. Reassemble in reverse order as disassembly.
5.1.2.3 DISPLAY REMOVAL AND REPLACEMENT
Remove electrical power and shut off pressure prior to executing this procedure.
1. Remove top panel (fig 7)
2. Remove front panel.
2.1. Remove ribbon cable P/N 401278 (W5) (fig 1)
2.2. Remove the four (4) mounting nuts P/N 100970-Z (fig 1).
2.3. Remove front panel assembly from instrument
3. Remove keypad interface board
3.1. Remove the ribbon cable at the interface board P/N 401093 (fig 9).
3.2. Remove mounting screws P/N 100984-Z (fig 9).
4. Remove and replace display
4.1. Remove standoff P/N 100171 (fig 9)
4.2. Remove mounting screws P/N 100970-Z (fig 9)
5. Reassemble in reverse order as disassembly.