Bell System Practices Plant Series Installation, Operation And Maintenance Manual page 8

SECTION 512- 115-100
RECORDING
HEAD JACK
D RAW
TAPE TAB
BASE
LOCKING CLAMPS
Fig. 7-KS-16844 Rapidial List 6 Tape Assembly Removed (Front View)
(6) Lower tape assembly onto base, carefully
engaging recording head pin in hole in draw
tape tab.
{7)
Line up tape assembly so all four lugs fall
in base slots.
{8) Lift front of tape assembly approximately
3/ 4-inch and push record bar leaf spring
back (with 3-1/2 inch screwdriver) about 112-inch.
(9) Lower tape assembly, allowing spring to
rest on latch (Fig. 11).
( 10)
Be sure all lugs on tape assembly are
engaged with base slots (Fig. 7 and 8).
(11) Secure base locking clamps (Fig.
Page 8
BSP 512-115-100-i04_1970-10-08.jp g
Scanned by Frank Harrell, {Cowboy Frank) Castle Rock, Colorado Apr 29, 2012 21:43:19
K I RELAY
(12)
(13)
with top edge of scan locking lever approximately
1/32-inch below scan switch (see Fig. 2, 9, and
12).
scan switch will not operate in either direction.
Operate release latch (Fig. 2). Hold scan switch
operated to right and verify that start lever will
not operate.
to left. Verify that spline screws in scan locking
lever are tight.
(14)
Dress wires behind large capacitor to clear
7
and 8). recording head travel.
OFF- NORMAL
CONTACTS
Secure tape assembly retaining screw.
Place scan locking lever on shaft.
lever with slot in scan switch (vertically)
Operate the start lever and verify that
Repeat with scan switch operated
Connect recording head
motor leads to receptacle placed in (6).
RECORD BAR
LEAF SPRING
Line
to
jack and connect