IBM 353 User manual

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TIJ]5rk1r
Machine
Record I
MACH
SERIAL NUMBER
VOLTAGE
AcD
CYCLES
DATE
TYPE
DcD
INSTALLED
353
354
SYSTEM DIAGRAMS
PLANT INSTALLED SPECIAL FEATURES
EC LEVEL
DESCRIPTION
QTY
DESCRIPTION QTY
FIELD INSTALLED SPECIAL FEATURES
CEM DIAGRAM
INSTALLED
REMOVED
NO.
OR S/M NO.
DESCRIPTION OF FEATURE
MAN NO.
DATE
MAN NO.
DATE
227-5583-1 (11-62)

Issued to: ________________ _
Branch Office:
______________ _
Department:
_______________ _
Address:
________________ _
If this manual is misplaced, it should
be returned to the above address.
1710)0 w.r-
t~_!J[~ .. ~l.M..!. Customer Engineering Reference Manual
til)
353 Disk Storage
354 Disk Control
@ 1962 by International Business Machines Corporation

TIrls edition, Form 227-5583-1, incorporates major
changes and additions to Form R27-5583-0. The latter
form is made obsolete by these changes.
Section 2 of this manual contains reference material
that is specifically intended for the 353 Disk Storage and
the 354 Disk Control. Most of the service checks, adjust-
ments, and removal and replacement procedmes for the 353
Disk
Storage are the same as those for the 1301 Disk Storage.
The procedmes that are the same are not included here, but
are found in the 1301 Disk Stor age Customer Engineering
Reference Manual (Form 227-5581).
Address comments regarding this publication to:
IBM, Product Publications Department, San Jose, California
227-5583-1 (11-62)

Section 1.
Section 2.
Section 3.
Section 4.
Section 5.
227-5583-1 (11-62)
INSTALLATION INSTRUCTIONS •••••••••••••••• 5
SCHEDULED MAINTENANCE
11tis section describes scheduled maintenance objectives
and procedures. The accepted inspection routine is
given in detail • • • • • • • • • • • • • • • • • • • • • • • •• 1. 1
SERVICING PROCEDURES
This section includes adjustments, removals, replace-
ments, waveforms, levels, and performance tests of
machine areas and functional units. • • • • • • • • • • • • •• 2. 1
SERVICE AIDS
This section contains specific trouble symptoms and
cures, scope aids, lubrication charts, and servicing
hints. ••••••••••••••••••••••••••••• 3. 1
LOCATIONS
This section gives locations of all major components
and functional units. • • • • • • • • • • • • • • • • • • • • •• 4. 1
SPECIAL TOOLS AND SUPPLIES
This section lists and describes the tools and supplies
that are specifically designed for this machine or are
necessary for proper servicing of this machine • • • • • • • •• 5.1
CONTENTS

SAFETY
Personal safety cannot be overemphasized. To ensure
your own safety, make it an every day practice to follow
safety precautions at all times. Become familiar with
and use the safety practices outlined in IBM pocket-
size cards, Forms 124-0002 and M04-8401, issued to
all Customer Engineers.
Exercise caution when working around moving
parts of the machine. Parts of the body or clothing
near the machine can cause accidents if the machine
starts unexpectedly. These accidents can be pre-
vented.
Potential difference within the power contactor
gate is -48 v DC to +208 v AC. Potential difference
within the electronic gates, printed cards, anddisplay
back pa.nel is -48 v DC to +30 v DC. Do not remove
or repla.ce circuit cards when DC power is on.
Do not short out or bypas s any safety feature.
One such feature is the access cover door safety
switch. Do not allow the access to run with this door
open by manually energizing this cover safety switch.
Also note that although the actuator is electronically
interlocked with this door open, if for any reason the
solenoid DC power goes off the actuator will attempt
to move under hydraulic pressure.
Access Mechanism
Because of the random and sometimes unpredictable
motion of the access mechanism, it should be serviced
with caution. Shields and guards have been provided
which can be of assistance only when firmly in place.
Care should be taken to remove the access assem-
bly according to outlined procedures. Two men must
be available to handle this unit since it weighs approxi-
mately 60 poundR and the mounting screws are accessible
only from the rear of the supporting strut.
Power Supplies
When a DC failure is sensed, a DC off sequence is
initiated but power remains on at the gate blowers,
convenience outlets, and disk drive motor. Do not
depend on this feature as safety protection.
Always use fusc pullers to remove or insert fuses.
Replace plastic protective covers over fuses immedi-
ately after replacing fuse.
The power supplies are heavy and should be
removed with care. Remove line cord from power
receptacle and wait at least 15 seconds after power
is turned off before attempting any repair or adjust-
ment within any power supply.
High Voltages
High voltage lines and connections exist in many areas
within the machine. Such voltages are found on trans-
formers, terminals, convenience outlets, and the like.
Contactor relays utilize high voltages at their points.
Check these contactor relays with the power on only
if absolutely necessary, and use extreme caution.
Power On States
Before the file is brought up to running condition from
the power sequence panel, it may exist in one of several
states of power on. In all cases, the following
assumptions are made:
1. The file is plugged into the wall.
2. The wall plug is at the specified potential.
Mainline (70 amp C. B.) switch OFF.
1. 208-230 volts AC is present at:
a. input and output of mainline filter
b. input to the mainline switch
Mainline switch and CB-2 (30 amp C. B. ) ON.
1. 208-230 v AC is present at:
a. input and output of mainline filter
b. input and output of mainline switch
c. input and output of CB-2
d. input to K-2, K-3, K-4
e. T1
2. 110 v AC is present at:
a. convenience outlet
b. TB204, TB203
c. Tl
3. 24 v AC is present at:
a. Tl
b. TB204
c. power sequence panel
When working in these areas, remove the input power
cord or turn off AC power at customer's wall switch.

1. Remove packing material as specified in un-
packing instructions. Do not install drawers.
2. Inspect machine for shipping damage, es-
pecially in the power contactor box, hydraulic
power supply, and SMS gates.
WARNING: Applying power to a machine with loose
or damaged connections in these areas can cause
damage to the machine and its surrounding area.
3. Connect all power cables from mechanical
frame to electronic frame before securing
them. Level electronic frame with mechani-
cal frame.
4. Swing out the receiver (see * Receiver Swing
Out, Section 2).
5.
Clean the disks (see * Disk Cleaning, Section
2) .
6. As the drawers are installed (see * Drawer
Replacement, Section 2), inspect the drawer
and clean heads. These units are adjusted at
the plant so they will be interchangeable with
each other.
7. Swing receiver into the array (see * Receiver
Swing-In, Section 2). Check for binds in load-
ing mechanism.
8. Manually load and unload heads to ensure
correct alignment.
WARNING: Never load or unload the heads when they
are out of the array.
9. Push access fully into disk array against
inner crash stop.
10. Check that the carriage-way wipers are not
* Refer to 1301 CE Heference Manual
227-5583-1 (11-62)
dry and that the way is not dirty.
11. Replace actuator shield.
12. Before applying power, check that the voltage
at outlet agreos with the amount shown on the
nameplate.
13. Start disk drive motor and check disk rotation
as indicated by arrow on filter frame. Turn
on electronic DC, gate blowers, solenoid DC.
and hydraulic power supply.
WARNING: Do not load the heads.
14. Reinspect drawer profiles.
15. Allow the disk array to run (purge) for 1-1/2
hours before loading the heads.
16. Load heads for 30 minutes.
17. Unload heads and turn machine off. Check
rundown time of disk array and compare it
to the run -down time recorded on the decal
in the power sequence gate. Run -down time
at installation should not be shorter than
recorded time minus four minutes.
18. After the disks have come to a complete stoP.
remove the access cover and again inspect
and clean heads and disks.
19. Manually load and unload heads to ensure
correct alignment.
20. Replace actuator shield.
21. Purge system for 15 minutes before loading
heads.
22. Reinspect the heads and disks again at the
end of the first, second and third week of
operation. After that time refer to the
Scheduled Maintenance Routine Chart in
Section 1 for correct inspection frequency.
Installation Instructions
5