1532_Technical_Bulletins 1532 Technical Bulletins

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User Manual: 1532_Technical_Bulletins

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TECHNICAL BULLETIN

UNIVAC

I CUSTOMER SERVICES

DIVISION

CONTENTS
SECTION 7
1532 (OA-7984) INPUT/OUTPUT CONSOLE
2.7.1
2.7.1.1
2.7.1.2
2.7.1.3

ADJUSTMENTS AND PROCEDURES
CONSOLE ADJUSTMENT PROCEDURE
PUNCH MOTOR DELAYS
PUNCH CLEANING PROCEDURE

2.7.2

MISCELLANEOUS INFORMATION
(INCLUDES TECHNICAL NOTES, TROUBLESHOOTING AIDS,
HAZAR DS, ETC.)

2.7.3

DOCUMENTATION

2.7.4

FIELD CHANGE ORDERS

November 1980

1

TECHNICAL BULLETIN

UNIVAC

I CUSTOMER SERVICES

2.7.1.1

DIVISION

1532 I/O CONSOLE ADJUSTHENT PROCEDURES
The following adjustment procedures should be used in conjunction with
the listed references.
REFERENCES
1.

Model 2500 Digitronics Reader Hanual, Technical Manual for Perforated
T&pe Reader

2.

Bulletin 281B, Volume I, Technical Manual for Teletypewriter (Theory of
Operation)

3.

Bulletin 281B, Volume II, Technical Manual for Teletypewriter (Adjustmont s)

4.

PX 3618-0-2, Technical Manual for 1532 I/O Console (Theory of Operation)

5.

Bulletin 215B, Technical Manual for High Speed Punch

READER ADJUSTMENTS
1.

2.

3.

Capstan Alignment.
a)

Check horizontal and vertical alignment of the capstan with a
small machinist's square.

b)

If the shaft is not in perfect alignment, place small shims under
the motor mounting screws. The bottom edge of the capstan must be
on the same level or slightly above the read head assembly. This
adjustment should be checked whenever the motor assembly is removed
for drive belt replacement.

Pinch Roller Alignment.
a)

Visually check horizontal alignment of the pinch roller.

b)

If adjustment is necessary, loosen the four screws on the pinch
r011er spring. (See figure 6-3 in the Digitronics manual.)

c)

Check the vertical alignment or parallelism between the pinch roller
and capstan by plac i ng a feeler gauge between the rollers. The
gap spacing should be equal at both ends or tape will t end to skew.

d)

If adjustment is necessary , loosen the two screws that hold the
r oller mount block t o t he bracke t soleno id mounting and move roller
mount block unti l pi nch roller i s parallel .

Re t urn Spring Adj u s tment .
a)

Enable the reader by

March 1971

~r c undi ng

t es t

~o int

G1 C in the r eader logics .

TECHNICAL BULLETIN

UNIVAC
b) .
c)

I CUSTOMER SERVICES

2.7.1.1

DIVISION

~sing

a spring scale, pull the pinch roller away from the capstan
until solenoid deactivates. This force should be 2-1/2 pounds minimum.
If adjustment is necessary, turn locknut no.

4 as shown on figure

6-3 in the Digitronics manual until solenoid deactivates.
d)

Turn locknut counterclockwise until solenoid reactivates and give
an additional half turn.

e)

If the force is less than 2-1/2 pounds minimum, check gap spacing
and readjust return spring.

4. Pinch Roller-Capstan Gap Adjustment.

5.

a)

Check the gap spacing between the pinch roller and the capstan.
gap should be 0.008 inch with the pinch roller deactivated.

The

b)

If adjustment is necessary, loosen the two allen screws that hold
the solenoid assembly to the front panel.

c)

Adjust for an 0.008 inch gap.

Brake Assembly Alignment.
a)

Read a tape off-line, stopping tape periodically. The feedhole
should be centered over the photodiode with tape stopped.

b)

Reform the brake spring if the brake armature does not rest squarely
and evenly upon the poles of the coil assembly.

c)

If the tape feedhole is stopping slightly past the photocell, the
brake spring tension should be increased.

6. Reader Checks.

a)

Depress READ indicator.
1)
2)

3)

Reader motor should begin running (power switch
be on).
Light source on reader should be on.

Oh,

reader must

b)

Set tape levels switch to 8.

c)

Pull tape width guide out as far as possible and put it in the down
position.
1)

d)

All eight indicators of the input register should light and
stay lighted.

Clear READ.
1)
2)
J)

2

READ indicator should light.

READ indicator should clear.
Reader motor should stop.
All eight bits of the input data register should clear.

March 1971

~

TECHNICAL BULLETIN

UNIVAC

I CUSTOMER SERVICES

/1
e)

2.7.1.1

DIVISION

~,

Adj"Llst read delay 19FOO as follows:
1)

R/

Connect oscilloscope to TPG6.
Adjust as looking from the front for a delay of 0.5 seconds.
(Externally trigger on TPC2)
Ov

-4.5v
f)

Put tape width guide down; depress READ and 8TPET f, EAD.
1)
2)

g)

Put tape width guide to the UP position.
1)
2)

h)
7.

Input data register bits should light.
READ and START READ should light.

START READ should clear.
Input data register bits should remain set.

Clear READ

Reader Data Level Adjustments.
a)

Preparations for adjustments.
1)
2)
3)
4)
5)

b)

Reader power to ON.
Tape levels switch to 6-7 if using 7 level tape or to 8 if
using 8 level tape.
ON-LINE/OFF-LINE switch to OFF-LINE.
Make a tape loop with all levels punched.
Position the tape loop in the reader and put the tape width
guide down.

Obtain motion as follows:
1)
2)

Depress READ.
Ground TPG11.

c}

Tape should be read at normal operating speed.

d)

The data levels should be adjusted for a 70 percent hole condition
and a 30 percent no-hole condition. The feed hole should be adjusted for a 40 percent hole condition and a 60 percent no-hole
condition. The adjustment pots are located on the re ader itself and
are in sequential order from the operator, starting with level 0
and ending with the feed hole. The levels and test points are as
follows:

March 1°71

:3

TECHNICAL BULLETIN

UNIVAC

I CUSTOMER SERVICES

2.7.1.1

DIVISION

LEVEL

TEST POINT
TPE19
TPF12
TPF16
TPF20
TPG16
TPG20
TPA28
TPA30
TPC14

o
1
2

3

4
5
6
7
Feed hole

Adjust each data level for the following waveform.

Ov
70%

Hole Condition

-4.5v

30% No Hole
Condition

Adjust feed hole for the following waveform.
Ov
40%
-4.5v
NOTE:

Hole
Condition

60%

No Hole Condition

Digitronics perforated tape reader manual will answer any
questions regarding reader operation.

PUNCH ADJUSTMENTS
1.

Punch Checks.
a)

Load a roll of tape on the punch and manually feed it through the
tape guide path. Rotate the punch flywheel manually to ensure
that there is no binding.

b)

Depress PUNCH indicator. The indicator should light and the punch
should begin running. If the punch doesn't run, check the power
switch on the punch itself.

c)

Depress the manual tape feed arm on the punch and feed tape through
the punch block. Only the feed holes should be punched.

d)

The feed holes punched must be clean cut and the holes must be 10
per inch as measured with a tape guide. (Teletype technical _manual,
high speed tape punch set, Bulletin 215B will answer any questions
regarding punch operation or adjustments.)

e)

4

When manually feeding tape, check the tape wheel brake for proper
operation.

March 1971

~

TECHNICAL BULLETIN

UNIVAC

I CUSTOMER SERVICES

2.7.1.1

DIVISION

f)

Check the tape remaining gauge for proper operation .

g)

Depress punch CLEAR switch and note that the indicator clears and
the punch stops running .

h)

Adjust 52D02 delay as follows:
1)
2)

i)

Connect oscilloscope to test point TPA2.
Set and clear the punch indicator and adjust J10A (right adjustms nt as viewed from the front) for a delay of 0.5 second. (It
may be necessary to trigger externally on TPA5.)

Adjust tape feed delay 51EOO as follows:
1)
2)

Connect oscilloscope to TPF2. '
Hold tape feed indicator depressed and adjust J12B for a delay
of 4 milliseconds.

NOTE:

j)

If tape doesn't feed when tape feed button is depressed,
check the air gap between punch timing wheel and the magnetic
pick up. Adjust gap at the point of least clearance for a
gap of 0 . 005 inch.

Master clear console and depress tape feed.
1)
2)

While holding tape feed depressed, set bits 0- 6 (0-7 with 8
level tape) in the output register. Tape should now be fed
with all levels punched .
Release tape feed .
a.
b.

Tape feed indicator and all output regis t er indicators clear.
Punch should cease running.

KEYBOARD AND PRINTER ADJUSTMENTS
1.

Adj ustment of Printer
a)

De ~ ay

Car ds .

Install tape l oop in the r eader .
OFF-LINE .

March 1971

Set ON -LINE/O F~-L I NE swit ch to

5

TECHNICAL BULLETIN
I CUSTOMER SERVICES

UNIVAC

2.7.1.1

DIVISION

b)

Set tape width guide to the down po sit ion.

c)

Set READ, START READ, PRINT and put the
READ.

d)

Connect scope to TPC22 and adjust J25C (76H02) for a 4 milli-second
delay .

e)

Adjust serializer delays at the following test points for the specified delay.
DELAY
71H02
71H04
71H06
71H08
71H10
71H12
71H14
71H16
71H18
71H18

f)

J16D
J17D
J18D
J19D
J22D
J23D
J24D
J25D
J26D
J27D

READ/READ·~)NE

TEST POINT
TFC18
TPG28
TPD20
TPD21
TPD22
TPE12
TPE13
TPD14
TPD15
TPD16

switch to

TIME
9.09
9.09
9.09
9.09
9.09
9.09
9.09
9.09
9.09
18.18

ms
ms
ms
ms
ms
ms
ms
ms
ms
ms

Adjust 52D01 as follows':
1)
2)

Connect scope at TPD3.
Set and clear print and adjust J9A for a de.J.ay of 0.5 sec onds
left adjustment. Externally sync on TPD2.

2.

The mechanical adjustment and lubrication procedures for the keyboard
and printer are detailed in Bulletin 281B, Volumes I and II, Technical
Manual for Teletypewriter.

3.

Time Delay Adjustments.
NOTEz
a}

Delay adjustment of 52E04.
1)
2)
3)
4)

b)

Connect oscilloscope to TPE8.
Ground TPG11.
Jumper TPE6 to TPE19.
Adjust J10A for 2 usec delay. (left adjustment as looking
from the front).

Delay adjustment of 27F01, 18D01, 52F03.
1)
2)
3)
4)
5)
6)
7)

6

Time delay adjust~ents should be made as accurately as possible.
Use the fastest possible sweep time to display each delay time.

tr 1/

Connect oscilloscope to TPC13.
Jumper TPE19 to TPA19.
Adjust J11B for a 2 microsecond delay. (left adjustment)
Connect scope to TPB4.
Jumper TPE19 to TPA1.
Remove card in J4A.
Adjust J9A for a 2 microsecond delay. (right adjustment)

March 1971

TECHNICAL BULLETIN

UNIVAC

I CUSTOMER SERVICES

8)
9)
10)
11)
c)

2.7.1.1

Replace card in J4A.
6- !)
Jumper TPE19 to TPB20 and ground TPGio. ~
Connect scope to TPG31, externally s~c on TPG23.
Adjust J30A for a 4.4 millisecond delay.

Delay adjustment of 30F01.
1)
2)
3)

4)

5)
d)

DIVISION

Remove all jumpers and grounds.
Set PRINT indicator and READ and START READ.
Set READ/READ-ONE to READ.
Connect scope to TPA17.
Adjust J11B for a 2 millisecond delay.

Delay adjustment of 22DOO.
1)
2}
3)

Master clear console and set ON-LINE/OFF-LINE switch to ON-LINE.
Connect scope to TPA9.
Repeatedly ground TPA3 with a jumper and at the same time adjust
J11A for a 70 millisecond delay.

March 1971

7

TECHNICAL BULLETIN

UNIVAC

I CUSTOMER SERVICES

2.7.1.2

DIVISION

1532 Punch Motor Delays
At the present time there is the possibility of there being three versions
of the punch motor delay circuitry in 1532 I/O Consoles in the field.
This delay is to provide time for the punch motor to attain full speed
before punching data. Adding to the confusion is that the possibility also
exists that there are two versions of this circuitry shown in the technical
manual. Depending on FCO status and on the serial number of the 1532,
neither of these versions may reflect the actual circuitry in the 1532.
SIN's 1-64 were bhilt with the original delay circuitry shown in Figure 1.
SIN's 65-160 were built with the circuitry shown in Figure 2. This was
the result of EIR B-93901 and FCO MPL-39O. Those SiN's below 65 which had
1PL-390 ialtalled al.o ~Iye t~. circaitry .aowa ia Fig.re 2. SiN'. 161
lad abo" wr. bull t wi t~ the circui try .~o_ i. Figar. 3. nil w. t~e
result of-ElK E-1034 ' and is 8 part of FOO IPL-552B. Also included in
IIPL-552B is a new P.C. Card type for the 70 millisec EFR delay.

~

0

~

S

.....

,
co

:z:~
~o::
liE-!

...:I~

5

M

'-'

13
Refer to Figure 8-5

......r----------~----------~~

FIGURE 2

September 1972

9

TECHNICAL BULLETIN

UNIVAC

I CUSTOMER SERVICES

DIVISION

2.7.1.2

1532 Punch Motor Delays

...---~Gl

11

Punch
Ready

5

Refer to Figure 8-3

NEil
8 II

.....--< ElO

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D24

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A5Jl
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III
...-i

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