Texas Instruments PHP1850 User manual

INTRODUCTION
The Texas Instruments Disk Memory Drive is ahigh-speed. high-
volume memory device. The disk drive reads information from and
writes Information on a5-114 inch diskette (not included). It can read or
write information from any place on the diskette. and can rapidly locate
any position or me on the diskette. The disk drive spins the diskette at
a constant speed and controls the movement of the magnetic head.
To function properly. a disk drive must have adisk controller. The Disk
nriVp. Controller tells the disk drive where to position the magn~tlc head
in order to read or write information properly. The controller also puts a
catalog
on the disk. making the data,that has been written easy to
'locate.
The controller does these things in response to commands which
you choose with the Disk Manager Sdlt~ State Software™ Command
Module or in response to the statements in aTI BASIC program.
This manual contains only the set-up, service, and warranty
Information for the Disk Memory Drive. For instructions regarding
setup. tests. and operation of the complete disk system. please refer to
the Disk Memory System manual included with the Disk Drive
Controller.
IMPORTANT
Record the serial number from the bottom of the Disk
Memory Drive
and purchase date in the space below. The
seriai number is identified by the words "SERIAL NO." on
the bottom case. Always relerence this information in any
correspondence.
PHP1850
Mod.1 No. S.,I.I No. Pu,oh ••• D.,.
Copyright C 1980, Texas Instruments Incorporated
1

SET UP INSTRUCTIONS
Carefully unpack the Disk Memory Drive and its cable. The disk drive is
a precision device which l1~P.S moving partsi with exacting tolerances. so
handle it carefully. Save the packing materials and cartons so that you
can safely transport the unit later.
The drive as it comes from the factor-y is rCi:tl.1y tu run as the only etr1ve
on your system. If you are using more than one drive. the following
process
must be done to all but one of the drives that you are using.
The last drive should be connecterl without being altered.
DO THE FOLLOWING ONLY IF YOU
ARE USING TWO OR THREE DRIVESI
1. WARNING: ALL POWER CORDS MUST BE DISCONNECTED
FROM THE POWER OUTLETS DURING THE FOLLOWING
PROCEDUREI
2. On all but one of your drives. use aPhillips head screwdriver to
remove the six screws
that hold the cover. Lift the cover off.
3. Locate the main ,printed circuit board. On ll, locaLe the lennlnatlon
resistor pack. It has 14 leads and looks like an integrated circuit.
(The
main boards look slightly different on the two different kinds of
drives. but the pack Is in the Ramp. place on each.) Be careful not to
disturb the strapping pack (which Is also removable) located very
near the resistor pack.
STRAPPING PACK
RESISTOR PACK
4. Remove the termlnatlon ~eslstor pack by prying each end up slightly
with asmall screwdr:ver
and then lifting it out by your thumb and
forefinger. Pull _:,'alght up,
2

5. Save the single drive termination resistor pack so that you can
reinsert it If the drive is ever to be used as a single or last disk drive.
Note
that If the socket for the reststor pack has more holes than
there are pins on the pack, Install the pack toward the outer edge of
the circuit board, leaVing the unused holes toward the center of the
board.
6.
Reattach the cover on the drive. aligning and tightening the screws
carefully. DO NOT OPERATE ANY UNITS WITHOUT
REATTACHING
THE COVER.
General Notes
The drives shoulrl hf" IOl"ated conveniently so that you CQn inacrt and
remove diskettes. The drives should be placed horizontally. Stacking of
disk drives Increases internal temperatures and may adversely affect
the diskettes.
Disk
drives and diskettes are affected by static electricity, magnetic
fields, and dust. The .drives should not be near the monitor screen. as it
generates apowerful magnfl!tft:' field. If possible, ,the drives should be in
alow humidity, dust-tree environment, free from static electricity. If
static electricity Is a problem In your area, treatIng your carpet with an
anti-static preparation may be helpful.
Setting up the controller and disk drives Is aSimple process. First,
connect them to the Home Computer, and then test their operation as
outl1ned in theDlsk Memory S!J .•t .. m manual.
CAUTION
The electronk C'ompnnt::"nts of the controller and
disk drives can be damaged by static electricity
discharges. To avoid damage, do not touch the
connector contacts or expose them to static
electricity.
Once
you've unpacked the units and made any modifications necessary
to the diSk drives, you're ready to connect the units to the Home
Computer.
3

Connecting the Disk Drives
Each drive has an attached cable with two connectors. one at the end of
the cable and one near the middle of the cable. The connector on the
end goes into the port on the rear of the controller or. in the case of
multiple disk drives. into the middle connector on the preceding drive
unit. usine the adapter board (see t1lustratlon hp.lowl. TVntp· It may be
necessary to rotate the connector in order to insert it. It goes in easily if
you have it positioned correctly.
If you have one drive. connect it to the controller. (Remove and save the
adapter board in the event adrive is added later.)
If you
have more than one drive. connect them to the controller in
series, wtth all but the last one (the one farthest away from the
controller) modifled as described above. Connect the first drive to the
port on the rear of the controller. The connector on the end of the
second drive's cable plugs into the adapter board in the middle of the
first drive's cable. The third drive is connected to the second drive in
the same way. Whether you have two or three drives. the drive farthest
away from the controller should be the one that has not been modifled.
.
ADAPTER BOARD
~
•
==
coc==c
=ClI::l~l:l=
=<======
=o•
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DSK 1
---
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DSK2
---
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DSK3
The first drive. the one connected directly to the controller. is identified
as DSKI by TI·BASIC. The second drive. connected to the cable of
nSK1, i~ nSK2. The third drive i5 DSK3. The labels prOVided with your
drivels) can be used to identify each drive.
4

•
SERVICE AND WARRANTY INFORMATION
In Case of Difficulty
If the disk system does not appear to be working properly, check the
following:
1, Power -Be sure all devices are plugged In, Then tum on the power
to the unit8 in the !JI0l-Jt:l ~t::4ut:l1ct::: 1.11:sk urives and cuntroller first,
and then the console and monlior.
2, Connector Separation - Check for proper alignment of the console
ann the: r.ontrnllf'T (they should be parallel).
3, Cable - Check that the proper cables are being used, Check the
cables for loose or broken leads, Check to see that the cables are
properly connected, right side up,
4. Software -Be sure all commands and statements are used as
described In this manual, If the disk system works properly wlih the
Disk Manager Command Module but not with a program, the
problem is probably With the program, EspeCially cheek the use of
OPEN, INPUT,
and PRINT.
5.
Diagnostic Tests - Check that the diskette, controller, and disk
drives are workl~g properly by running the diagnostic tests.
6. Home Computer - Check to see that the Home Computer works
properly wlih all accessories disconnected.
7. If none of the above procedures corrects the difficulty. consult "If
You Have guestions or Need Assistance" or see the "Service
Information" portion of the User's Reference Guide.
Diskette Failure IndLcators
Diskettes can lose information because of ascratch on their surface.
The Information lost depends on the shape of the scratch. A circular
scratch. probably cau!ied by !iotnething being ground into the diskette
by the magnetic head, may destroy an entire track, usually losing data
from one file.
A straIght scratch, :!tuch as one made uy i:l IJt::IlL:1l ur fiugernatl being run
across the exposed area of the diskette, may destroy all the Information
on a number of sectors. This usually causes Information to be lost from
mn~t of thp ftlf:".fil. on the diskette. If the !icratch goes through sector 0 or
1, all contents of the diskette are lost, since those sectors hold the
catalog whtch the computer uses to find files.
Scratchcs too small to be visible to the naked eye can cau~ infoHllation
to be lost.
Information can also be lost due to exposing dtskettes to magnetic fields
or excessive heat or cold and by bending or striktng them.
5

Exchange Centers (Local Service Options)
If some part of your disk system requires service. instead of returning it
to ~ sp.rvlrf' (;lrllity for repair or replacement, you may elect to exchange
it for afactory reconditioned unit by going in per!?on to one of the
exchange centers which has been established across the United States.
A handling fee wl1l be charl!ed by the exchange center for in-
warranty exchanges. Out-of-warranty exchanges will be charged at
the rates in effect at the time of the exchange. Please refer to the
enclosed Exchange Service listing or call the Consumer Relations
Department for exchange fee tnformation and the location 01 the nearest
exchange center.
IfYou Have Questions or Need Assistance
If you have questions concerning disk system repair or peripheral,
accessory, or software purchase. please call our Consumer Relations
Department at 800-858-4565 (toll free within the contiguous United
States except Texas) or 800-092-4279 witliiu Tt::xa~. The operators at
these numbers cannot proVide technical assistance_
For
technical questions about programming, specific applications, etc ..
you can call tlUti-141-2titi3. Please note that this is not atoll-free
number, and collect calls cannot be accepted.
As an alternative. you can write to:
Consumer Relations Department
Texas Instruments Incorporated
P.O. Box 53
Lubbock. Texas 7!J4Utl
Because of the number of suggestions which come to Texas
Instruments from many sources containing both new and old ideas,
Texas Instruments wlll consider such suggestions only if they are freely
given to
Texas Instruments. It Is the polley of Texas Instruments to
refuse to receive any suggestions in confidence. Therefore, if you wish
to ~hare YOUI" :5uggc5t10115 with TeA~ III~lrurnt:nt5. or jf you Wish us to
review any BASIC langualle program which you have developed. please
include the follOWing statement In your letter:
"All of the InfofJui:1UuU [UJ wanlel1 hereWllh Is presenteCl
to Texas Instruments on anonconfidential. nonobligatory
basis; no relationship, confidential or otherwise,
expressen or implied, is established with Texas
Instruments by this presentation. Texas Instruments
may use, copyright. distribute. publish, reproduce. or
dispose of the information in any way without
compensation to me_"
6

THREE-MONTH LIMITED WARRANTY
THIS TEXAS INSTRUMENTS DISK MEMORY DRIVE WARRANTY
EXTENDS TO THE ORIGINAL CONSUMER PURCHASER OF THE
ACCESSORY.
WARRANTY DURATION
This Disk Memory Drive is warranted for a period of three (3) months
from the date of orIginal purchase by the consumer.
WARRANTY COVERAGE
This Disk Memory Drive is warranted against defective materials or
workmanshIp. THIS WARRANTY IS VOID IF THE ACCESSORY HAS
BEEN DAMAGED BY ACCIDENT. UNREASONABLE USE. NEGLECT.
IMPROPER SERVICE OR OTHER CAUSES NOT ARISING OUT OF
DEFECTS IN MATERIALS OR WORKMANSHIP.
WARRANTY DISCLAIMERS
ANY IMPLIED WARRANTIES ARISING OUT OF THIS SALE. INCLUDING
BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANT-
ABILITY AND FIT!"ESS FOR A PARTICULAR PURPOSE. ARE LIMITED
IN DURATION TO THE ABOVE THREE·MONTH PERIOD. TEXAS
INSTRUMENTS SHALL NOT BE LIABLE FOR LOSS OF USE OF THE DISK
SYSTEM OR OTHER INCIDENTAL OR CONSEQUENTIAL COSTS.
EXPENSES. OR DAMAGES INCURRED BY THE CONSUMER OR ANY
OTHER USER.
Some state,s do not allow the exclusion or limitation of implied
warranties or consequential damages, so the above limitations or
exclusions may not apply to you.
LEGAL REMEDIES
This warranty gives you specific legal rights. and you may also have
other rights that vary from state to state.
7

WARRANTY PERFORMANCE
During the above three-month warranty period, your Disk Memory
Drive will be repaired or replaced with a new or reconditioned unit of
the same or equivaient model [at TI's option) when the unit is returned
by prepaid shipment to a Texas Instruments Service FacIlity listed
below. The repaired or replacement unit will be warranted for three
months from date of repair or replacement. Other than the postage
requirement. no charge wlll be made for the repair or replacement of in-
warranty units.
Texas Instruments strongly recommends that you insure the unit for
value prior to shipment.
TEXAS INSTRUMENTS CONSUMER SERVICE FACILITY
U.S, Residents
Texas Instruments Service Facility
2303 North University
Lubbock, Texas 79415
Canadian Residents
Geophysical Services Incorporated
41 Shelley Road
Richmond Hill, Ontario, Canada L4C5G4
Consumers in California and Oregon may contact the following Texas
Instruments offices for additional assistance or information,
Texas Instruments Consumer Service
831 South Douglas Street
El Segundo, California 90245
(2131973,1803
8
Texas Instruments Consumer Service
10700 Southwest Beaverton Highway
Park Plaza West
Beaverton. Oregon 97005
[phone]

PRINTED IN U.S.A
,.
TEXAS INSTRUMEN.T~
INCORPORATE~_
DALLAS. TEXA$ "
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