1401 Demo Power-on Procedure
1) System power on procedure:
a) In the AC circuit breaker panel in the
far back corner near the entrance, move the wide arm on the appropriate 3-phase
circuit breaker to the ON position
(to left). Note that there is a breaker for the German system
(DE 1401) and another one for the Connecticut system (CT 1401).
b) If powering on the DE 1401:
i) At the bottom of the Pacific Power 60->50 Hz Converter, move the arm on the large circuit breaker to the ON position (to left).
ii) At the top of the Pacific Power 60->50 Hz Converter, turn on the Converter’s output by momentarily depressing its green POWER ON push button at the top. Note that the three voltage meters (one for each phase) should each indicate about 220 V (line to neutral).
c) The lamp on top of the appropriate CPU should be illuminated, which indicates that the system has AC power. WARNING: All AC outlets are now energized and peripherals have ingress AC power!
d) Momentarily depress indented yellow POWER ON button on bottom of 1401 panel. The 1401 and all connected peripherals should now be on and running. The system only comes up if all power supplies are properly operating and other safety interlocks. With all the fans running, it should be fairly noisy. WARNING: Ferroresonant power supplies in several of the units (1401, 1402, 729) pack lethal power levels.
2. 1401 CPU initialization:
a. Rotate white “mode” rotary switch until it is in the RUN position.
b. Rotate white “tape unit select" rotary switch until it is in the N position.
c. Momentarily depress shiny START RESET push button.
d. Optional: Momentarily depress yellow I ADD REG button.
3. 1402 Card Reader Unit initialization and card setup:
a. Turn on 1402 card reader: Depress READER ON (down) side of rocker switch on front panel.
b. Clear the reader of any cards that may have been left from last use:
i. Remove any cards present in the read hoppers.
ii. Remove card weight and any cards left in the card read station
iii. Close reader gate (move bar up), and
iv. Momentarily depress NON PROC RUN OUT (down) side of rocker switch on front panel. Remove any new cards from the hopper.
c. Open (lower) reader gate and place punched-card deck in face down, 9 or bottom edge first/towards reader card picker.
d. Place card weight over cards and close (up) reader gate. (If there are only a few cards, add ~inch of blank cards to increase weight.)
e. Momentarily depress CHECK RESET (up) side of rocker switch
on front panel
4. 1403 Printer initialization and setup for aligning paper for BigPrint demo:
a. Open 1403 cover.
b. It’s likely that the paper is already properly aligned for the BigPrint demo program and you can skip to step “c”. If not, here’s the paper carriage alignment procedure:
i. If not already, pull the black ball on the “Print Unit Release Lever” on left side away from paper to de-energize chain motor and move the print unit outward about an inch.
ii. Rotate large black “Feed Clutch” knob on the right counterclockwise into AUS or NEUTRAL, “6 LINE” position to disengage carriage feed clutch.
iii. Rotate the black PAPER ADVANCE knob on right appropriately so that line 33 shows just above the left top “forms tractor”.
iv. Momentarily depress CARRIGE RESTORE button on 1403 panel.
v. Rotate large black “Feed Clutch” knob on the right clockwise into EIN or DRIVE, “6 LINE” position to engage carriage feed clutch.
c. Push black ball on “Print Unit Release Lever” on left towards paper to move print unit inward about an inch to energize chain motor and enable printing. The 1403 will not operate if the release lever is not engaged.
d. Verify that the PRINT READY status light is illuminated. If not check for complete closure of all four paper tractors. If FORMS CHECK light was on, clear it by momentarily depressing CHECK RESET.
e. Close cover.
5. If running a tape demo program, here’s the 729 Tape Unit initialization procedure. Otherwise skip to step “6”.
a. Verify supply tape has a write enable ring and mount it on left supply hub.
b. Depress supply tape unlock push button to the lower left of supply reel.
c. Feed tape straight over tape heads and then clockwise into right take-up reel, so it hangs down from hub center.
d. Pressing the tape against the hub, depress supply tape unlock push button while hand rotating take-up reel clockwise several rotations. Remove finger and continue rotating until the reflective tape mark has moved past the read head.
e. Close door and close sliding glass
front cover upward.
(If door drops down, it may be necessary to actuate the door sensor in the upper left by momentarily pushing it to the left.)
f. Momentarily depress RESET, then LOAD REWIND, and then START buttons. The head assembly should lower, the tape should drop into the vacuum columns, and it should move left until the load point marker is sensed.
g. Verify READY light is illuminated.
6. Load cards to begin demo:
a. Depress LOAD switch on 1402 front panel to read-in cards.
b. Momentarily depress START button on
1401 or 1402 or 1403 to begin program execution. Some demo programs require additional STARTs.
1401 Demo Power-down Procedure
7. Unmount the tape drive(s) by momentarily depressing RESET and then UNLOAD. The tape should first be rewound (high speed if 1/2 inch of tape on takeup reel), then when rewound to load point marker, lifted out of the vacuum columns and the tape heads raised.
8. Open the 1403 door and disengage the 1403 print chain by pulling pull the black ball on the “Print Unit Release Lever” on left side away from paper to de-energize chain motor and move the print unit outward about an inch.
9. On the 1401, rotate white “mode” rotary switch until it is in the ALTER position.
10.On the 1401, momentarily push the POWER OFF button. All the fans should be off. It should be fairly quiet now.
11.At the circuit breaker panel, move the wide arm on the appropriate 3-phase circuit breaker to the OFF position (to right). The light on top of the 1401(s) should be off.
12.Confirm that all 026 key punch units are turned off (toggle switches up).
13.Turn off Computer Room A/C units, if they were on.
14.Record in activity in the 1401 log book.
15.Close both doors.