Wavetek 145 Instruction Manual page 38

6.4.2 Reassembly
Refer to the chassis assembly drawing 0102-00-0575
(refer to Section 7) for correct positioning of the
reassembled components.
1. Turn the unit upside down (bottom of unit up).
2. Insert the trigger/pulse board (component side
up).
3. Solder the following wires to the board:
E1 (blue);
E2 (white-blue);
E3 (blue);
E4 (red);
E5 (white-red);
E6 (red);
E7 (green);
E8 (green);
E30 (coax-center conductor);
E31 (coax-shield);
J6 (TTL BNC), E40 and E41 ;
J5 (TTL BNC), E42 and E43;
J4 (ECL BNC), E44 and E4 7;
J3 (ECL BNC), E45 and E46;
E9 (blue);
E10 (red);
E 11 (violet);
E12 (white);
E13 (white);
E14 (white);
E15 (gray);
E16 (orange);
E17 (red);
E18 (white-black);
E19 (yellow);
E22 (brown);
E48 (green).
4. Secure the power switch to the trigger/pulse
board.
5. Solder the green-yellow wire connecting the
front and rear panels.
6. Slide in the generator board (component side up).
7. Secure the four screws attaching the generator
and trigger/pulse boards together.
8. Install the two screws securing the generator to
the left side panel mounting brackets.
9. Push the front panel back over the board
detents.
10. Connect the following wires to the generator
board:
E4 (red), E5 (brown) and E3 (orange) dial pot;
E1 (brown) and E2 (white-black) VCG;
E6 (green) and E7 (white-black) GCV;
E28 (coax, center conductor) and E29 (coax
shield);
E26 (yellow) and E27 (white-black) Ext DC;
E23 from E34 of trigger/pulse board;
E21 from E39 of trigger/pulse board;
E24 from E37 of trigger/pulse board;
E25 from E38 of trigger/pulse board.
Connect the Molex connector.
11. Solder the large No. 18 ground wire to the output
BNC.
12. Turn the instrument upright and slide front and
rear panels into the bottom cover. This spaces
them correctly for proper knob alignment.
13. Install all knobs. Align them so that they match
the front panel graphics and are spaced approx-
imately 1116th of an inch away from the surface
the front panel.
14. Install four screws to secure the lower board to
the bottom cover standoffs
15. Replace the top cover and invert the instrument.
16. Secure the top cover with four screws into bot-
tom cover.
6.5 DISASSEMBLY/REASSEMBLY INSTRUC-
TIONS (For the Rack Mounted Instrument)
6.5.1 Disassembly
Review the following procedure and identify
components using drawings 0102-00-0621 and
0102-00-0575 (refer to Section 7).
1. Disconnect the power plug from the line recep-
tacle.
2. Turn the unit top side up.
3. Remove the four top cover screws and cover.
6-3