Power Supplies, Model 2; Motors; Card Guides - IBM 1402 Reference Manual

Eccentric Screw
(Adjus" Impulse
Duration)
Rotor Locking Screw
(Adjus" Impulse Timing)
Figure 3-50. Contact Emitter
Power Supplies, Models 1 and 6
Models 1
&
6 contain two DC supplies and two AC
supplies. In addition, three DC voltages are brought
in for the solar cell CB circuits.
Most of the supplies listed can be measured at
test hubs on the CE aid panel, but the two AC sup-
plies must be measured at the supply. Measure the
115v AC across terminals one and two; the 130v AC
supply across terminals six and eight. Acceptable volt-
ages are shown in Figures 3-51 and 3-52.
SUPPLY
TOLERANCE
CURRENT
VOLTAGE
AT SUPPLY AT POINT OF USE
-20V DC' %2% ±4% 15 AMPS
-60V DC" %10% %10% 10 OR 20 AMPS
130V AC %5%
%10% 1250 WATT FERRO RESONANT
115V AC %10% AT TRANSFORMER
20 AMPS
• THE 20 VOLT SUPPLY MUST BE SET AT 21 VOLTS.
•• 60 VOLT SUPPLY NOT USED ON MODEL 4 &
5.
Figure 3-51. Models 1 and 6 Internal Supplies
SUPPLY
TOLERANCE
VOLTAGE AT SUPPLY AT POINT OF USE
-12VDC %2% %4%
+30V DC %2% %4%
+6V DC
*2%
%4%
Figure 3-52. Models 1 and 6 External Supplies
Power Supplies, Model 2
The Model 2 contains four DC supplies and one AC
supply. In addition +6v DC is brought into the read
circuits. All listed voltages can be measured at CE
aid panel test hubs except the + 12v DC and 130v
AC, which are measured between terminals six and
seven and terminals six and eight of the respective
supplies. Acceptable voltages are shown in Figure
3-53.
SUPPLY
TOLERANCE
VOLTAGE
AT SUPPLY
AT POINT OF USE
CURRENT
-12V DC
%1%
%2% 20 AMPS
+12V DC
%1%
%2%
4 AMPS
-20V DC %8%
%10%
6 AMPS
-60V DC *10%
%10%
10 OR 20 AMPS
130V AC %5%
%10%
1a.40 WATT FERRO RESONANT
Figure 3-53. Model 2 Internal Supplies
Power Supplies, Models 4 and 5
Models 4
&
5 contain one DC supply and two AC
supplies. Three other DC voltages are brought in
for the solar cell CB units. The -60v, DC supply
is not mounted in the Models 4
&
5.
Motors
The Model 3 read and punch motors are equipped
with thermal cutouts. The cutouts are reset manually
by depressing a button on the rear of the motor.
Reclesignecl Punch Feecl
Machine with the redesigned punch feed can be iden-
tified by the absence of the lowering frame.
Card Guides
All card guides except those included in the following
adjustments are prelocated. No adjustments are re-
quired when removing and replacing the prelocated
card guides.
ADJUSTMENTS
1. Check that hopper back plate guide is .008"
above the card line.
2. Loosen screws on tie bar on the first lower card
guide and shift the bar to obtain .020" to .050"
clearance between the lower card guide and the
hopper back plate guide (Figure 3-54).
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