Terak 8510/a User manual

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'System Installation
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GRAPHieS COMPUTER SYSTEM
8510/a GRAPHies COMPUTER SYSTEM
INSTALLATION & USERS GUIDE
This document describes the installation of aTERAK 8510/a Graphies Computer
System. Single and multiple disk drive configurations are presented, along with
system acceptance test procedures. Operating environment requirements, abasic
troubleshooting guide, maintenance
procedures and descriptions of the system
components are also included. Contained in appendices are descriptions of the
system modules and apart number listing of the major assemblies.
teral<
SCOrr5DALE, ARIZONA
Part No. 50-0010-001

"TERAK CORPORATION believes that the infornlation contained herein is accurate. In no event will
TERAK be Hable for any losses or damages whether direct or indirect resulting from the use of such
information, including, without limitation,
lasses arising frorn claims of patent, copyright, and
trademark infringement. No license is granted hereby for·the use of any patent or patent rights of
TERAK. TERAK reserves the right to update the information contail1ed herein at any time without
further notice.
The inforrnation contained herein is proprietary to TERAK, CORPORATION and must be treated as
confidential. It may not be disclosed to others or used for any purpose except as expressly consented
ta by "·ERAK."
8510/a GRAPHieS COMPUTER SYSTEM
INSTALLATIO,N & USERS GUIDE
Part No. 50-0010-001
FIRST EDITION
Copyright 1980 by TERAK CORPORATION
"Ail Rights Reserved"
TERAK is atrademark of TERAKCORPORATION.
DEC, PDP-l1,RT-ll and'LSI-l1 are trademarks of
DIGITAL EQUIPMENT CORPORATION.
{

CONTENTS
PAGE
) INTRODUCTION. ... . 1
SECPflON
1. PRE-INSTALLA~rION CONSiDERATIONS t, •••••••••••••••••••••••••• 2
1.1 PHYSICAL INSPEC1-ION OF SYSTEM COMPONENTS ,) 2
1.2 SYSTEM POWER &OPERi\TING ENVIRONMENT REQUIREMENTS 2
1.2.1 Input Voltage &Frequency Options 2
1.2.2 Power Requirements t ••••••••••••••••••••••••••••••••••• 2
1.2.3
Temperature Limits 2
1.2.4 Relative Humidity R,ange 3
1.3 UNIT DIMENSIONS ' 3
1.4 UNIT'WEIGHT '3
2. SYSTEM INSTALLATION PROCEDURES 3
2.1 SINGLE DISK DRIVE CONFIGURATI()N 3
2.2 MULTIPLE DISK DRIVE CONFIGURAT·ION 4
58 UNIT COVER REMOVAL-REPLACEMENT 8
5.1 8510, 8512 &8515 UNITS 8
5.2 8532-1 MONITOR 9
6. UNIT AC INPUT VOLTAGE SELECTION 9
6.1 8510/12/15 UNITS 9
6.2 8532-1 MONITOR UNIT 11
7. UNIT CHANGES FOR 50 Hz & 60 Hz AC POWER FREQUENCIES 12
8. IJ~~I<: 1rIl(){jIJI-IE5;II()()lrl~(i 13
9. SYSTEM DESCRIPTION a ••••••• a •••••••••••••••• a ••••••••••••••••• 17
9.1 8510 DATA PROCESSOR SYSTEM a •••••••••••••••••••••••••••••••••••••••••• 17
9.2· 8532-1 MONITOR a' ••••••••••••••••••••••••••••••••••••••••• a ••••••••• a •••• a ••••• 0 •••••• 17
9.3 8532-2.KEYBOARD a •••••• a ••••••••••••••••••••••••••••••••••••••• a •••••••••••••••••••••• 17
9.4 8512 DISK SUBSYSTEM 17
9.5 8515 EXPANSION SySTEM a ••••••••••••••••••••••••••••••• a ••••••••••••••••••••••••••• 19

(
f,

)
APPENDICES
PAGE
A. Diskette Handling/Storage Considerations. . . . .. .. ~ .. 1 1 •••••••••••••• 1 ••••• ~ •••••••••• , • • •• Al thru A2
B. Suggested Maintenance 0 • 0 •••••••••••••• 0 •••••• > ••• 0' •••••••••• 0 • 0 •• 0 • 0 •••••• 0 0 • 1 010 ••••• BI
C. Processor Reference Guide 0 ••• 0.0 ••••••• 1' ••• 1 •••••••••• 1 ••• 1 ••• 1 •••••• 0 ••••••••• 0 ...... Cl thru C44
D. Video Controller-Memory Reference Guide ... 0' ••••••••••••• 0 •••••• 0 ••••••• 0 •••• 0 1 0 ••• 0 '0 Dl thru 08
E. Diskette Controller Reference Guide .. 0 ••••••••••••• 0 • o •••••••••••• o •• o0 El thru E19
F.
Asynchronous SeriaI Interface Reference Guide 1' ••••••••••••••••••• 0 •••••••• 0 0 •••••• fl thru F5
G. Parallel Interface Reference Guide ~ Gl thru G5
H. Use of Control Console Mode (Micro-OOT) 1 ••••• 1 •••••••••••••••• 1 ••••• ~ ••••••• •• • •• Hl thru 1-I5
1. TERAK Part Numbers, Major Assemblies 1 ••••••••••••••••••••••••••••••• 0 ,"' •••• 1,.1. Il
LIST OF FIGURES
FIGURE NO.
System Components '0 • 1 •• 0 ••••• 0 • 0 •••• 0 0 •• 1··1
Single Disk Drive Interconnections 0 •• 0 ••• 0 • 0 •••••• 0 • 0 • 0 •• 0 •••• 0 ••• 0 0 0 •• 0 ••• 0 0 0 • 0 • 0 •••• 0 ••• 0 • 0 2-1
Multiple Disk Drive Interconnections o •• 0 •••••• 0 • 0 ••••••• 0 ••••••••••••• 000 •• 0 • 0 • 0 •• 0 0 ••••• 0 • " 0 •••• 0 0 2-2
8510/a Module Locations & I/C) Priority 0.0 ••••••••• 0 •••••• 0. 0 • 0 •• 0 ••• 0 0 •••• 0 • 0 •••••••• 0 •• 0 •• '0' 0 • •• 4-1
Bus Extension Interconnections 0 ••••• 0 •• 0 ••• 0 • 0 • 0 •••• 0 ••• 0 ••••••• 0 0 • 0 • 0 • 0 •• 0 • 0 ••••••• 0 • 0 0 •• 0 • • • • • •• 4-2
EIB Locations .. 0 •••• 0 ••••• 0 0 • 0 ••••• 0 ••••••••• 0 ••••• 0 •••• 0 • 0 • 0 • 0 • 0 •• 0 ••• 0 0 •• 0 0 0 0 •••• 0 • 0 ••••••••• 0 4-3
8510/12/15 Caver Removal-Replacement &8510/15 Module Retaining Hardware 0 00 •••• 0 ••• 0 •• 0 • 0.01. • • •• 5-1
8532-1 Monitor Chassis Ren1oval-Repla.cement 0 0 • 0 0 ••••••• 0 0 •••• 0 •• 0 •• 0 •• 0 0 • 0 ••••••••••• 0 • • • •• • 0 • • •• 5-2
8510/12/15 AC Input Voltage Selection .000 ••••••• 0 ••••• 0 ••••• '0 •• 0 • 0 • 0 •• 0. 0 .0' •••• 0 0 •• 0 ••• '~ • •••• • •• 6-1
8532-1 AC Input Voltage Selection .. 0 ••• 0 ••••• 0 •••••••••••••••• 0 • 0 ••• 0 •••••••• 0 0 • 0 •••• 0 •••••••• 0 •• 0 6-2
8510/a Troubleshooting Guide 000 ••• 0 ••• 0 •• 0.0 ••••• 000.0 ••••••••••• 0 •••••• 0 • •• 8-1
8532-2 Keyboard Unit Output Codes 00 •• 0.00.0 •• 0 ••••• 0 0 ••• 0 ••• 0 •••••••• 0 ••••••• 0 0 • 00' ••••• 0 ••• 0 • •• 9-1
8532-2 Keyboard Layout .0 • 0 • 0 ••••• 0 0 • 0 0 0 ••• 0 •• 0 • , ••• 0 •••••••••••••••••• 0 •••••• 0 • 0 •• 0 • 0 0 • 000 .. 0 • • • •• 9-2
Diskette Loading .. 0000 ••• 0 0 • 0 0 • 0 .0' ••• 0 • 0 0 ••••••••••••••••• 0 • 0 ••• 0 •• 0 •••• 0' ••••••• 00. 00 •••••••••• A-l
Diskette HandlingJStorage Considerations ... 0 •••• 0 • 0 •• 0 •••••••••• 0 •• 0 ••••••••••• 0 •• 0 •• 0 •••• 0 0 • • • • • •• A-2
General I<egister Identification 0 0 ••• 0 0 0 • 0 • 0 •• 0 • 0 0 • 0 •• 0 • 0 • 0 0 •••• 0 0 • 0 0 0 ••• 0000000• 000 •• 0 0 ••• 0 ••• 0 • 0 • o' C-l
High and Law Byte .0 0 0 0 •• 0 •• 0 •• 0 • 0 0 0 0 0 •• 0 • 0 • 0" •• 0 •• 0 • 0 0 •••• 0 • 0 • 0 • 0 0 0 0 • 0 0 ••••••••••• 0 • '. 0 •••••••• 0 0 C-2
Ward &Byte Addresses for First 4K Bank o,. 0 • 0 • 0 ••• 0 •• 0 • 0 ••• 0 0 • 0 •••• 0 0 • 0 •••• 0 • 0 • 0 ••• 0 0 0 • 0 • 0 ••• 0 • •• C-3
Processor Status Ward (PS) o •• 0 •••••••• 0 0 • 0 • 0 0 •••••• 0 ••••••• 0 •••• 0 • 0 0 • 0 0 •• 0 • 0 0 ••• 0 •• 0 •• 0 • 0 0 • 0 ••• 0 0 C-4
System Memory Organization .0 • 0
•••••• 0 0 ••••••• 0 • 0 ••••••••• 0 0 ••••••••••••• 0 0 ••••• 0 • 0 •••• 0 0 •• 0 • • •• D-1
Display Geometry .. 0 •• 0 • 0 •••••••• 0 ••••••••• 0 0 •• 0 •••••••••••• 0 •••••••••••• 0 0 •• 0 ••••• 0 • 0 0 • 0 •••••••• 'D-2
Composite Video Waveform at 8510 Video EIB BNe 0 ••••••• 0 • o' •0 •••••• 0 • 0 • 0 0 ••••••••• 00 D-3
Graphie Address Register (GAR) 0 0 ••• 0 ••• 0 • 0 •• 0 ••••••• 0 •••••• 0 •• 0 ••••• 0 • 0 ••••• 0 ••• 0 •• 0 •• 0 0 0 ••• 0 •• 0 0 D-4
,Video Control Register (VeR) .. 0 ••• 0 • 0 • 00' •• 0 •• 0 0 ••••••••••• 000 ••• 0 0 • 0 • 0 •• 0 • 0 • 0 0 00 •• 0 ••• 00' 00' 0 0 .0 D-5
Generator Buffer Address Format o., 0 0 0 0 0 0 0 •• 0 0 •• 0 • 0 • 0 ••• 00' 0 ••• 00 •• 0 00' •••••• 0 .00. 0 • 0 • 0 0000 ••• 0 • o' 0-6
Page Buffer Address Format. 0 0 • 0 • o •• 0 • 0 • 0 0 • 0 • 0 • 0 0 0 • 0 0 0 •• 0 •• 0 0000000 •• 00' 0 0 0000 •• 0 0 0 0000000 •••••• o' D-7
Video Index Register (VIR) 0 0 •••• 0 • 0 0 0 •• 0 0 0 0 • 0 0 •• 0 •• 0 0 ••• 0 ••• 0 0 0 0 •• 0 • 0 0 0 0 0 • 0 •• 0 0 • 0 • 0 0 0 0 0 0 0 •••• 0 •• 0 0 D-8
Keybaard Data Bufter (KDB) 0 0 0 •• 0 • 0 0 0 0 • 0 0 ••••••• 0 0 •• 0 0 •••••• 0 •• 0 0 •• 0 0 • 0 • 0 0 0 •••• 0 0 • 0 •• 0 0 •• 0 D-9
Keyboard Status Register (KSR) .0 0 •• 0 0 • 0 0 0 • 0 •••••• 0 0 0 •••• 0 ••••••••••• 0 ••• 0000• 00000 •• 0 0 0 0 0 0 •••• o' 0-10
Emulator Data Buffer (EDB) o' 0 •• 0 0 • 0 0 •• 0 0 0 •••••• 0 ••••••• 0 •• 0 0 • 0 • 0 0 •••• 0 0 • 0 0 0 • 0 • 0 0 0 0 • 0 0 0 0 0 • 0 D-11
Emulator Status Register (ESR) ... 0 0 0 •• 0 • 0 • 0 0 •• 0 0 ••• 0 0 0 0 • 0 0 • 0 0 • 0 •• 0 •••• 0 0 • 0 0 0 ••• 0 •• 0 0 • 0 • 0 0 0 0 0 •• 0 • 0 0-12
Diskette Controller Control &Status Register (QXCS) 00' o' 0 0 ••• 0 • o •••• 0 •• 0' 00' •• 00000 ••• 000 ••••• o. 00' E-l
Diskette Controller Data Buffer (QXCB) .. 0.0 ••• 0 0 ••• 0 • 0 ••••••••••••••••• 0 • 0 •• 0 •••• 0 ••• 0' 0 • 00 • 0 .0 •••• E-2
Diskette Controller ROM Listing 0 0 • 0 0 • 0 0 0 •• 0 0 • 0 0 ••••••••••••• 0 0 ••••••••• 0 • 0 0 0 •• 0 0 •••••• 0 0 0 •••••••• 0 • E-3
Diskette Controller Sample System Bootstrap Listing o •• 0 ••• 0 0 •••••• 0 0 ••• 0 0 0 0 • 0 • 0 •••• 0 ••• 0 0 0 0 ... 0 0 •••••• E-4
Diskette Controller Listing of Dummy Boat Example .... 0 •• 0 ••••••••••• 0 0 0 ••••••• 0 0 0 0 •• 0 0 0 ••• 0 •••• 0 • 0 • E-5
SeriaI Interface EIB Connector &Switch Functions o ••••••• 000 •• 00' •• 00' 0.00000. 0 o' •• 0 •• 0.0 •• 0 •• o' ••• F-1
Single Seriai Current Loop &J3 'Wiring .. 0 0 •• 0 0 ••• 0 0 000 •••• 0 • 0 • o' 00' 0000 •••• 0 •• 0 ••• 0 0 • 0 0 • 0 .00000.00 •• F-2
Parallel Interface EIB Connector &Module Jumper Functions .0.0 •• 0 • 0 ••• 0 • 0 ••• 0 • 0000000. 0 •• o' •0000000 G-1
Data &Control Word Formats 0 0 • 0 0 • 0 •••• 0 ••• 0 0 •••••••••••• 0 • 0 0 ••••• 0 •• 0 ••• 0 • 0 • 0 ••••• 0 •• 000 •• 0 • 0 • 0 G-2
1/0 Data Transfers .0 ••••••• 0 ••••• 0 •• 0 •• 0 000 •••• 0 0 0 • 0 ••••• 0 •• 0 • o •••• 00 •• 0 •••• 0 0 •• 0 • 0 ••• 0 •• 0 • 00 •• o' G-3
8510/a HALT Switch Module ... 0 0 ••••• 0 0 •••••••• 0 •••• o' ••••• 0 ••••• 0 0.0 •••• 0 •••••••• 0 0 •• 00' •• 0 0 •••• H-1

:(
. <,

INTIIODUCTION
)
The TERAK 8510/a is a general-purpose, disk-based
cornputer intended for data processing and medium-
resolution .graphies applications. A320 x240 dot pattern
and/or 1920 eharacters (24 lines of 80) can be displayed
(under program control) on a 12 in. monochrome CRT.
Four drives, accommodating IBM 3740 formatted (8 in.)
Happy di?kettes, can be included in a systern configur-
ation.
The hardware is madularized into a keyboard unit,
a CRT display, a data proeessor unit, bus expansion unit
and optional drive units. T'he system companents are
shawn in Figure 1-1. AlI components are light-weight and
are suitable for office and laboratory environments.
This document describes the installation of aTERAK
8510/a Graphie Computer System. The installation
consists of the interconnection and aeceptance testingof
the system hardware. Aiso included is abrief trouble-
shooting guide and system description. Appendices
contain diskette handling/storage considerations, sug-
gested maintenance procedures, a parts list and
reference guides for the system hardware.
Figure 1·1 System Components
0001-000
1

1PRE-INSP"f ALLATION
CONSIDERA,TI'ONS
1.1 PHYSICAL INSPECTION OF SYSTEM
COMPONENTS
Carefully unpack aU the shippingcontainers; save aH the
containermaterials for equipment
storage or future re-
shiprnent.
Each container is marked with the 'unitpart number(s)
and individual seriaI number(s). (AppendixI lists
the part
numbers of the major assemblies.) Use the fol1owing 1iSt5
ta verify the contents of each container.
8510 Container:
8510 Data Processor 1ea.
8510/a Systern Acceptance ,Disk 1ea.
8510/a Docurnentation Kit 1ea.
AC Power Cord . . . . . . . . . . . . . . . . . . . . .. 1ea.
8515 Container:
8515 Expansion System 0 1ea.
Cable, Aux. Drive, Short 1ea.
8510 Bus Exte,nsion EIB (packed inside
the 8515 unit) 1ea.
AC Power Cord . . . . . . . . . . . . . . . . . . . . .. 1'ea.
8512 Container:
8512 Disk Subsystem 1ea.
Cable, Aux. Drive, Short ~. 1ea.
A,C Power Cord . . . . . . . . . . . . . . . . . . . . .. 1ea.
8532-1, 8532-2 Container:
8532-1 Monitor 1ea.
8532 Monitor Cable (6 ft.) ..........•... lea.
8532-2 Keyboard (with integral 8532
KeyboardCableAssembly) '; 1ea.
AC Power Cord ' .. '. . . . . . . . . . . . . . . . . . .. lea.
Inspect aIl iteIns for obvious signs of damage. DO NOT
interconnect a damaged item ta asystetn; contact
T'ERAK, or its representative, for further information.
NOTE: The 8510, 8512 and 8515 diskdrive-heads are
protected during shipmentby foam blacks that are
inserted in the disk drive openings. These blocks ensure
that the cloors will stayopen, so that the -drive ,heads
remain unloaded (not clown) and therefore protected.
Remove and save these blocks for future re-shipment.
Shipping the units without the foam blacks in placemay
result in damage to the drive heads: -
1.2 SYS1"'EM POWER &OPERATING
ENVIRONMENT REQUIREMEN~rS
The 'TERAK 8510/a system requires single-phase ac
power sources and earth-grounded chassis protection.
Each system unit that requires ac power input is
delivered with an ac power cord that cantains three
insulated 18-gauge stranded wires. The chassis ground
wire is connected to the round pin of the ac power cord.
2
A grounding conductor that is equal, or greater in size, to
tnepower cord, must be a part of the branch circuit that
supplies each unit of the 8510/3 system.,
The grounding conductor mentioned ab ove must be
grounded to earth at the service equipment or otber
acceptable building earth ground such as the building
frame in the case 'of ahigh-rise steel frarne structure.
The attachment-plug receptacles in the vicinityof each
unit of the 8510/a system are aIl ta be ofa groundingtype,
and thegrounding conductors serving these·receptacles
are to be connected to earth ground at the serviceequip-
ment or other acceptacle building earth ground such as
the building frame in the case of ahigh-rise steel frarne
structure.
1.2.1 AC Input Voltage & Frequency Options
100 V RMS 50 Hz/60 riz
120 vRMS 50 Hz/60 f'iz
220 V RMS 50 Hz/6ü I-Iz
240 V RMS 50 Hz/6ü Hz
~
Each unit has been factory wired for aparticular ac input
voltage and frequency. Labels, indicating the values,
were affixed to
the unit whenit was initiallyshippedfrom
the factory. Ta use an acvoltage other than that
indicatedby the label, internaljurrlpeismust be changed.
See Section 6 for adescription of voltage selection.
Each'unit has been configured for either,SÜ l-Iz or 60 Hz.
operation. For 50 Hz operation, alabel'signifying that
frequency wa~, affixedto<the unitwhenit. wasinitially
, shipped 'from tb~ factory.·See'Section.7 for adescription
of thechangesnecessary to aperate atSOI-iz vs 60 l-iz.
~NI:N!iJ
THE 8512,8532·1 AND 8532·2 UNITS AREDESIGNED
AND INTENDED FOR US·EONLY'WITH THE. 8510
UNrr. ANY ATTEMPTTO CONNECT THE 8512,
8532-1 OR 8532-2 UNITS TOADEVICEOTHER THAN
THE 8510 UNIT MA y RESIJL T IN DAMAGE TO THE
EQUIPMENT.
1.2~2.Power Requirements
8510 Unit: 250 Watts (Maxirnum)
8512 Unit:
100 Wa~ts' (Nominal)
8515 Unit: 250 Watts.(Maximum)
8532-1 Unit: 24 'Watts'(Nominal)
8532-2 Unit:· 2.S·Watts. (Nominal)
1.2.3 Temperature Limits
System OperatingRange: SOF (10 C) to 100 F
(37.7 C)
Hardware Storage Range: ~40F (·40 C) to 167F
(75 C)
·~.Media 'Storage Range: SOF (IOC) to120 F
(49 C) .
(
(,
(

t-'
11.2.4 Relative
I--Il.1miejity Ra.11ge
Operating: 201.?f) ta BOOk> w'ithout condensation
Storage: 5~b ta 98% without condensation
of the units. In the following descriptions, the inter-
connec tian diagrams indicate which EIBs are involved in
aparticular configuration. Labels on each cable identify
their use.
1.3 UNIT DIMENSIONS
8510: 7.5 in (19 cm) Hx12.2 in (31 cm) Wx
18 in. (46 cm) D
8515: Same as 8510
8512: 5.5 in. (14 cm) 1-1 x12.2 in. (31 cm) W x
18 in. (46 cm) 0
8532-1: 15.5 in. (39 crn) I-I x12.2 in. (31 cm) W x
12 in. (30.5 cm) 1)
8532-2: 2.5 in. (6.4 cm) I-I x17.8 in. (45 cm) Wx
7.1 in. (18 cm) 0
1.4 UNI1· WEIGHT
8510: 45.5 lbs. (Shipping container wt.: 53.5 lbs.)
851S: 41.5 lbs (Shipping container wt.: 50 lbs.)
8512: 31 lbs. (Shipping container wt.: 40 lbs.)
8532-1: 30.8 lbs. (Sl'" lb
8532-2: 6.3 lbs.
11pPlng contaIner wt.: 48,.2 s.)
2 INSTALLATION PROCEDURES
Installation of an 8510/a system is straight-forward
and, typicaHy, can be accamplished within 15 minutes.
[
The system can be configured via plug-in modules,
connectors and switches ~ounted on External Interface
Boards (EIBs) that are Il1stalled on the rear surfaces
~~'c .... ... __ .. =_ ____,-_-----
2.1 SINGI_E DISK DRIVE CONFIGURATION
Figure 2-1 depicts the sta.ndard configuration of 8510
EIBs
as installed at the factory. Asixft. cable, packed in a
plastic bag in the 8532 shipping container, is used ta
connect the 8532-1 Monitor ta the Video EIB of the 8510
Data Processor unit. Another six ft. cable, integral ta the
8532-2 Keyboard, a1so plugs into the Video EIB.. 1"he
connectors on the Video EIB are labeled "Monitor" and
"Keyboard", and are of different size, for easy
recognition.
The "Keyboard/Emulator" s\vitch, on the Video EIB,
must be in the Sl'"[) (off) position ta use the 8532-1
Monitor
and 8532-2 Keyboard as the system console.
The switch is OFF when a red bar appears at the ON sicle
of the housing; canversely, the switch is ON when a red
bar appears at the OFF sicle.
The switches on the 8510 Asynchronaus SeriaI Interface
EIB must be set as shawn in Figufe 2-1.
The 8532-1 Monitor and ··8510 Data Processor have
individual ac power cards. Asingle switch on the 8510
contraIs tht2 ac power ta bath units.
This
completes the single disk drive interconnections.
Proceed further in Sections 2&4for other system
configurations.
Back of 8532-1 Monitor
Back Of 8510
Data Processor
8510 Floppy Disk
EIB o~ ~
o
Blank Cover
o c:=:==::::J
Seriai Interface EIB 0 c==J CJ W0
(PN 31-0003-250) Video EIB 0 q..... l0l
'-=====:;:::=============~ '?c::....:-~F-- 9--'---'"
----;:: ..... .# \ \
Monitor Cable (lncluded With 8532-1 Monitor )(PN 90-0012-006) "\
\
,\"
\Composite Video
\\ Output BNe
\ Connector (Similar T0
\ElA RS-170)
\\\
"-
\\\\
/ 1 2 Keybo~d/Emulator SW. Must
o Iml Be Off For 8532-1,-2 Selection.
nDepress Off Skie Of Switch; Red
Off Marking Appears At Opposite Sîde
On:AJt
Off:Std.
Back of 8532-2 K::~:r: / / J
.,. ... Ke. board Cable (Included With 8532-2 Keyboard)(PN 91-0032-001
.....
" <" ._----.,.
~:.R
Serial ElB Switches
(*Indicates the switch state)
(Depress On/Off Side Of Switch;
Red Marking Appears At OppOsite Sicle.)
Figure 2-1 Single Disk Drive Interconnections
0002-000
3

(
An Alternative Unit Stacking Arrangerrlent.
(Long Ribbon
Cable Option Required)
or AC'" p... Short Ribbon Cable Induded With An 8512 Unit
;? __ -... ower (PN90~OOO8~OOl)
,I~~ " __ ~ /
'Tf -~--.". ~ .......... ---------.
:=:dL --- ..... "\'
~.~._-: /S:~:;8512 ~\-; ~
l====~~ /ic=>
1 ..... ü
10 ~
/ <75..8
, -- ..o~====
/ ë2~...,--_",",""=,,
Empty Dip Sockets __ ... 0
\
Back of 8512 \ \:Ë
\ ~CJ
\.8c
\ tf)2
~9'6: -\ -- :-Q \==::::-====~
'7~\ 0:: _
~\ °D~~
,~.\ p..-/~
\ 0"2 \ . ./
\ "',7\/----:::::-/~ c::>
---~ ....
Back of 8512
Video EIB
Blank Cover
Seriai Interface EIB 0c::::::::::J
r--\ L.-~ 0_' -----il . ...-J ~c:=:JI,I~_= ~ ~ 1
Back of 8510 r--'---=--.--s------.t-----
(PN 31-0003-250J-iL ..
1
8532-1-2
~; Connections
ToAC Power
Driver T erminator Dip 0
8510 Floppy Disk EIB ........ 0
~o --n ;..J"'I..-.......:...----:-l
8512 Floppy Disk BBs- :0
Back of 8512
Disk Drive
Empty Dip 03ULI'\.~L~i- -. -'-i
Recommended Back of 8512
Maximur11
Unit Stacking Disk Drive
Figure 2-2 Multiple Disk Drive Interconnections
0003-000
2.2 MUI..~TIPLE DISK DRIVE
CONFIGURATION
Refer to r--"'igure 2-2. A maximum of four disk drives can
be utilized in an 8510/a system. As shawn, the 8512 Disk
Subsystems can be stacked on top of the 8510, or
alternatively, can be stacked separately. Each8512 has a
disk drive "daisy chain" connector EIB; these EIBs are
interconnected to the 8510 Floppy Disk EIB by rneans of
8 inch fiat ribbon cables (Part Nurnber 90-0008-001). One
ribbon cable is packed inside each 8512 (or 8515) ship-
ping container. An optional.27 inch fIat ribbon cable
(Part Number 90-0008-002) can be usedto position the
85125 at adifferent location on the user's workspace.
The cable and unit connectors are keyed to prevent in-
correct coupling; check the cable connector orient-
ation . before attempting to insertit in the EIB connector.
T'erminating resistors for the disk drive daisy chain are
contained in a14-pin Dual-In-Line Package (DIP), on the
8510 Disk Drive EIB. For convenience, the terminator
resistor DIP should remain in the 8510 socket. If the
optional 27 in. cable is used, the terminator resistor DI?
should be moved to the daisy chainEIB socket on the
drive unit that is last in the daisychain connection.
NOTE: The DIPmust be oriented 50 that pin 1is at the
lower right-hand corner ofthesocket, when viewed fram
the rear of the unit. Pin 1is identified by a dot or
depression, or the nun1ber 1, on the package.
Each 8512 has an ac input power requirement; however,
the control ofac power i5 by means of the main ac power
ON/OFF switch on the 8510 unit
3 SYSTEM ACCEPTANCE TESTS
After an 851ü/a system has been interconnected in
accordance with Section 2of this document, the system
should be initially tested by means of the TERAf< System
Il Acceptance Disk{PartNumber 61-0006-001). The
diskette cantains GO/NO-GO tests that exercise the
hardware subsystems. Each test is precededby an
explanatory message on the display; user instructions
will also appear on the display.
NOTE: If the following procedures cannot be
accomplished, refer to Section 8for troubleshooting
steps.
3e1 POWER ON; DISKETTE LOADING
T urn the system on by rneans· of. the ac power switches
located inthe upper right corners of the 8510 and 8515 (if
used) front panels. If closed, open the·diskette loading
door on the 8510 (Drive QXO) by depressing the button
just below the door.
NOTE: If you are unfamiliar with diskette hand1ing
procedures, referto Appendix Afirst.
Remove the System Acceptance Disl~ette from its pro-
tective envelope; keep'your fingers. 9ft of the exposed
magnetic surfaces of tI1é'âiskette. Holding the diskette
with the label sideup,3s'snown in Figure A-l, insertit
into the QXOdri~e ~ntilit carl go no further. The
diskette will "latch~'~'·}nto position. Close the drive door;
the drive··head-down' light (Red Light Emitting Diode
embedded in the door button) will turn on.
(
(
4

3.2 SYSTEM ACCEPTANCE TEST
PROCEDURES
ejected. RetTIove the diskette and return it ta its
protective envelope.
)After
the Systenî Acceptance Test diskette has been
inserted in drive QXO, and the drive door has been
closed, the operating system should loaditself (boat) into
main mernory. Within 20 seconds, an acceptance test-
related message should appear on the display.
The test -n~lated rnessage will prompt the user to execute
a carriage return to display the "menu" of tests. Select a
test by typing the displayed test name, followed by a
carriage return. The test procedures will then appear on
the display.
N01~E: Once a test has begun, the user should not type
anything, unless prompted by a message. Typing during
the test execution can produce unpredictable results
and an apparent test failure.
NOTE: Ta exit from any test, at any time, re-boat the
operating system by depressing the upper half of the
8510 ac power switch; the acceptance test-related
message will re-appear on the display.
3.3 DISKETTE REMüVAL.
After the System Acceptance Tests are completed,
remove the diskette by depressing the drive door button.
The door will open and the diskette will be partially
4- SYSTEM EXPANSION
A8510 system can be expanded, by means of modular
options, to allow the user to interconnect avariety of
peripheral equipment. TERAK, or other LSI-ll bus-
compatible modules can be installed in the 8510 and 8515
units.
The 8510 and 8515 units each contain an LSl·ll bus-
cornpatible
backplane. Each backplane cantains sixteen
36 pin connectors, as shown in Figure 4-1. The L5I-l1
bus is based on the use ofdual-height (8.9 in Wx5.2 in H)
modules; that is, modules that plug into pairs of
connectors (A&B or C&D).
A module has an 1/0 priority that is based on itselectrical
distance from the processor module, as shawn in Figure
4-1. For instance, if aquad-height (8.9 in W x 10.5 in H)
processor module were instal1ed in s1ot5 1 and 5of the
backplane, the highest priority slot would be #2. The
arrows on Figure 4-1 signify the descending order of
priority. Aquad-height
module uses slot connectors
A&B for 1/0priority signaling; adual-height l'nodule uses
either A&B or C&D. An LSI-l1 bus-compatible quad-
height
module maintains continuity of the prioritysignaIs
through slots C&D by means of etched circuit jumpers
on the module
Note: AH modules that plug into the backplanes have their components facing downward
5lot 7CD: bus extender card, seriaI, parallel or other interface modules
510t 3AB: samE as
7CO, except for the bus extender card
Selection of siot 7CO for either backplane was arbitrary -actual slots used depend upon actual configuration
8515 Backplane Connectors (User-Specified Modules)
-.f Toward The Rear
- lOf The Un:t
:
43 ~,~ ",1.
.Highest \. },
Priority
2Module Slot If
The CPU Module
Is Installed In
Siots lAB (And
5eO).
B
~
A
::
BA
BA2
BA
==r-'
,Bus Extender Inteconnector
"Cables, If Required.
!8
1 ~~~~~-=-----"---=---~_~:"'--_.:-...t.
i --- ri 71' .:J Bus Extender
1 -~--=:---==---__=_--:--- --,
i6Lowest Priority Slot For This Configuration
1 15 0 C
1!
11
1
1
1
1
1
1
1
1
1
1
1
1
1
Figure 4·1 8510/a Module Locations & 1/0 Priority 0004-000
5

4.1 PROCESSOR B'US EXTENSION
Refer to Figures 4-2 &4-3. The Bus Extension EIBs and
the 8515 Backplane provide the' "(J$\. wrthameans of
extending the 8510's data bus.
An 8515 unit
is shipped ,with afactory-installed Floppy
Disk EIS, two Cable Clamp Cavers and aBlank Caver,
as shawn in Figure 4-3. The 8510 Bus Extension EIB has
been packed inside the 8515 for shipment; this EIB must
be removed from the 8515 and installedin the 8510. In the
process, the 8510 Floppy Disk EIB must be relocated.
RelTIOVe the 8510 and 8515 covers in accordance with
Part 5.1, Section 5. Remove the 8510 Sus Extension EIB
from
the 8S15. Check to see that the 8515 Bus Extension
EIB cable card is plugged into the 8515 Backplane. (See
Figure 4-1 for Backplane locations.) Additional rnodules
may be installed in the 8515 at this'time. Note the device
1/0 priority indicated by Figure 4-1. The 8515 caver can
he reinstaHed at this tinle ..
AIl EIBs are attached to the units by means of 4Phillips
head screws, one in each corner of the EIB. RelTIOVe the
Blank . Caver frorn the 8510; save it for future Use.
Unfasten the Floppy Disk EIB from the top .. most location
and let it hang loose.
Remove
the module retainer bracket in the 8510 (see
Figure 5-1). The Bus Extension EIB cqrd mustnow be
installed
in the 8510 backplane slot that is shawn in
Figure 4-1. The component (connector) sicle of the card
must be facing downward wh en it is inserted. [jft the
ribbon cable through the notch in thecard; slide the card
through the module guide and insert it into the
backplane. Pass the card's ribbon cable and attached
EIB through the rear of the 8510. Secure the Bus
Extension EIB to the top-mûst EIB location with four
screws, then install the Disk Drive EIB, just below it.
The 8510 caver can now be re-installed.
As shawn in Figure 4-2, the bus extension cables that
emerge frOlTI the 8515 Cable ClampCover are
connected to the Bus Extension EIB on the 8510. The
shortest (innennost) cable of this pair plugs into the
DATA connector on the 8510 Bus Extension EIB; the
other cable plugs into the CONTROL connector. An 8
inch ribbon cable, (Part
Number 90-000S-001, packed in
the 8515 shipping container), connects the 8510 Floppy
Disk EIB
ta the 8515 Floppy Disk EIS.
The 8515 requires ac input power and is controlled from
aswitch
on its front panel. Both the 8510 and 8515 ac
power switches must be on for the 8510/a system ta
operate. The system can he reset trom {2ither the 8510 or
8515 power on/reset switches.
(
r-r
---------------------
I
Back Of 8512 1
l '
. ! Further Disk Drive Expansion i
11 l,
, 1
(
Sicle of 8515
Sicle of 8510
Cable Clamp
Cover
Short Ribbon Cable
Factory Installed (Inclucled With An 8515 Or 8512 Unit)
,-EIBs
~----'"
8532-1,-2
Connections
Back Of 8515
Blank
Cover ~---.I
Cable Clamp Caver
8515,Floppy Disk EIB
(Empty Dip
Socket)
(For Disk Drive
I;xpansion)
Bus Extension Cables
Seria.I Interface EIB
Video EIB ..... 10
rr::*=============:::::XC:::> ~o ~""""-+ @]--J'0
M
ToAC
Power
Recommencled
Maximum
Unit Stacking
Figure 4 ... 2 System Processor Bus Extension Interconnections
0005-000
(
6

Single EIB Location
o
8512 Floppy Disk EIB*
o
)
Back Of 8512
EIB Locations --
Back Of 8515
EIB Locations
Back
Of 8510
o0
'---------_ .. _-----_ .. -
00
Blank Caver *
00
00
Cable Clamp Cover*
00
00
8515 Floppy Disk EIB*
00
0
()
Cable Clamp Cover*
00
00
Bus Extension E18*
00
00
8510 Floppy Disk EIB*
00
00
SeriaI Interface EIB *
00
00
Video EIB*
00
)
!.'.'
/-
*Standard Factory-Installed EIB Configuration; Can Be
Aitered With Any Combination Of EIBs.
NOTE: AIl Locations Must Be Filled With An EIB
Or ACover Plate Ta Maintain Proper Air Flow Through Aunit.
Figure 4·3 EIB Locations
7
0006-000

4.2 MODULE INS~rALLATION
5 UNI1~, COVER REMOvAL-
REPLACEMENT
Figure 5·1 8510/12/15 Caver Removal-Replacement &
8510/15 Module Retaining Hardware
(
.ô\\.
(
(
0007·000
Cover:Rétaining
Screws,·BoÙom
(Screws With Metal Washers)
(WARNI~~)
*"
Due ta the complex nature o(the system r.:omponents,
unit caver removal-teplac'Èi'ment, and- -subsequent
maintenance and repairs, should·only be perforrned by
technically-qualified personnel.
~
DISCONNECT THE UNIT AC POWER CORDS
BEFORE REMOVING THECOVERS
5.1 8510, 8515 & 8512 UNITS
The unit covers are held in place by four Phillips-head
screws, as indicated by Figure 5-1. RelTIOVe the two
retaining screws and nylon finishing washers at the rear-
-sicles of the unit. Loosen the two retaining screws with
the metal washers at the bottom-front of the unit. It is not
necessary to remove these screws completely. Don't
stand aunit on its rear feet to loosen the bottonl-front
Caver Retaining
Sicle,
Screws
8510/15 Module Retainer
'The installation of a-rnoduleis quite stra'ight-forward. As
described. in Part.4, the ·1/0 p(jority o~ .. -_ ]1flM);t:1:ule 15 a
function of -its electricaldistance from the system
processor module~ Only I_SI-11 bus-compatible modules
are ta be installed. After the unit caver and module
retainer
bracket have been removed (see Part 5.1 and
Figure 5-1), a dual or quad-height module can be plugged
into a backplane location. (The power supplies in the
8510 and 8515 units can provide a maximum of 12 A@5
VDC and 6 A @12 VDC to-the backplanes; the available
power i5 afunction of the nurnber and type of modules
installed.)
Peripheral connections. to a module are by means of
External Interface Boards (EIBs). These'EIBs, located at
the rear of the units, as shawn in Figure 4-3, are held in
place by four Phillips-head screws. With the exception of
the bus extension EIBs (described in Part 4.1). the
module EIBs can be installed in any location at the rear of
the 8510 and 8515 units. Neatly fold the EIB-module
ribbon cable(s) along the chassis when re,·installing aunit
caver, 50 that the cables are not pinched when the caver
is fastened down. EIB connector pin listings and switch
settings (if applicable)
are described in the Appendices.
8

)
screws if cables are connected ta EIBs. Instead, slide the
unit forward until it protrudes far enough beyond the
desk or bench edge to allow access to the botton1 front
screws. Slide the integral front panel~cover forward until
it separates from the chassis.
Re-install a caver by sliding it back onto its chassis,
taking care not to pinch any ribbon cables that may be
protruding slightly. W'hen the cover is in place, tighten
thebottom front screws and then replace the rear-side
screws.
5.2 8532-1 MONITOR
~
AVOlD STRIKING THE PICTURE TUBE
The Monitor chassis i5 held in place by 8Phillips pan-
head screws; six (#8'5) on the bottom and two (#6's) on
the rear of the cabinet, as shawn in Figure 5-2. Renîove
these screws and slide the chassis straight back out of its
cabinet.
NOTE: Do not remove the fiat-head screws securing the
stand to the Monitor cabinet.
6UNIT' AC INPUT VOLTAGE
SELECTION
[WARNING)
THE VOL TAGES REQUIRED BY THE SYSTEM ARE
pO~rENTIALL y HAZARDOUS: ONL y TECf-f-
NIC,ALLyQUALIFIED PERSONNEL SHOULD
PERFORM 1'HE AC INPUT VOLTAGE SELECTION
CHANGES.
6.1 8510, 8612 &8515 UNITS
Remove the cavers in accordance with Part 5.1, Section
5. As shawn in Figure 6-1, there are two types of power
supply boards in current use. Identify the board type in
your particular unit, then proceed with the following
appropriate paragraph.
As shawn in Figure 6~ lA, there are three jumpers on the
power supply boards of each unit; the y are locatedin the
upper right-hand corner of the boards, on the
Monitor Chassis
7Retaining Screws
"" Rear Of Unit
Figure 3·2 8532-1 Monitor ·Chassis· .. ·Removal-~eplacement
9
0008-000

A
~
Hale And 510t
(For Access To' Disk Drive
Chassis Fastening Screws)
85JO/15 l;lnit Powe.r Supply Board
----}'
r_----, .240 V! ~ 1 =.1 t::j
Sa/60Hz 22~1~ 6bo660o~ J23
AC Line 120 v1 .1:=1 :::'j c:::: 1
(RMS) lOOV H! :::t r= J
8512 Unit Power Supply Board
~--c:::;---=-.--:::-
1 ~;~~. = == ~
JI 9<> 09 9099 J8
120 Vib r= ::: 1
100 v::::l =:1::: 1
Sû/60Hz AC
____ Line (RMS)
Typical Jumper
(
(
0009-000
l
Connector
1 1
J 16 Connector J
Voltage Select
Board
Voltage Select Board
8510/15 Unit Power Supply
Board
(This Board TabSurface
Indicates The Voltage
~ . (~,_ele_ct_ed_) - ----,
~ '8512 Power Supply Board
~
~\
o~6. \
sv.{!{!\'l '<ÇP / /'
e'( ~/
\",o\Y 1
/
Hale And 510t
(For Access T0Disk Drive
Chassis Fastening Screws)
AC, Input Voltage
Select
Board Location
"
240
AC Input
Voltage Select
Board
,Figure 6-1 8510/12/15 AC Input Voltage Selection
10

J
component sicle. ~rhe 8510 &8515 jumper jacks are
labeled J16 through J'23; the 8512 jacks are labeled JI
through J8. Insert the jurnpers into the jack pairs that are
color-banded together for a particular voltage. For
instance, to operate an 8512 unit at 120 V, the jumpered
pairs would be: J2
ta J3; J4 to J5; J6 to J7.
As shawn in Figure 6-1B, a printed wiring board is used
for voltage selection. 'This board must be inserted into a
connectar located in the upper right-hand corner of the
power supply board. The connector is labeled J16. Ta
select adifferent ac input voltage, rem ove the board and
re-insert it sa that the desired voltage is indicated on the
board tab surface that is nearest ta the front and top of
the unit) as
shoVJl1 in Figure 6-1B.
6.2 8532-1 UNIT
Rernove the Monitor chassis in accordance with Part 5.2,
Section 5. In Figure 6-2, the plugs labeled Pl and P2
contain the jumpers. P2 is actually apair of plugs: one is
for 100V & 120\/ operation; the other is for 220V&24üV
operation. When the pin in Pl must be rnoved, use a
MOLEX HT 2285 Extractor Tool, (or equivalent), ta
rernove the pin. Insert the pin in its alternate location
until it locks in place.
lOOV Operation
1. Insert the "120" labeled P2 plug inta J2.
2. Move the brown-wiredpin in Pl ta location3 of
Pl.
3. Insert Pl into JI.
120V Operation
1. Insert the "120" labeled P2 plug into J2.
2. Move the brown-wiredpin in Pl ta location 1of
Pl.
3. Insert Pl into JI.
220V Operation
1. Insert the "220" labeled P2 plug into J2.
2. Move the brown-wired pin in Pl to location 3 of
Pl.
3. Insert Pl inta JI.
240V Operation
1. Insert the "220" labeled P2 plug into J2.
2. Move the brown-wired pin in Pl ta location 1of
Pl.
3. Insert Pl into JI.
8532-1 Monitor
Top View
({j
/~
"'\
\\
C:::::<~ • -----'
Extractor T 001 (Molex HT 2285)
Pl Brn. Pl
Brn.: !Grn. ~ For 120 Vand 240 VOperation
Grn. ===;=g; ~ For 100 Vand 220 VOperation
Red· Red
Figure 6·2 8532-1 AC Input Voltage Selection
Il
~p~
1------iJ·,' ,
P2
0010-000

7 UNIT CHANGES FOR 59 Hz & 69Hz
POWERFltEQUENCf'ES
The pulleys on the disk drive \-ilc)tors and the drive beIts
of the 8510,8512 and 8515 units rnust be replaced when
changing from 50 rIz ta 60 Hz operation, or vice versa.
The Video Board in the 8510 unit must also be
exchanged. The fol1owing TERAK part numbers are
applicable:
Item 50Hz 60 Hz
Video Board 92-0014-011 92-0014-010
Pulley,
matar 39-0012-001 39-0012-002
Belt, disk drive 39-0013-001 39-0013-002
1. Remove the unit covers (see Part 5.1, Section 5).
2. Remove the 8510, 8515 module retainer brackets
(see Figure 5-1).
3. Remove the modules from
the 8510 &8515
backpl.anes.
4. Remove the four Phillips-head screws that fasten
adisk drive chassis
to aunit chassis. Two of these
screws are accessed through ahale and a 510t in a
power supply board '(see Figure 6-1). The other
two screws are on the unit chassis sicle that i5
opposite the power supply board.
s. Slide the disk drive chassis forward until the disk
drive PWB connectors can be easily dis-
connected. Remove the disk drive chassis.
6. Stand the disk drive chassis on its side 50 that its
PWB is visible. Remave the four slotted hex.-
agonal screws that fasten the PWB to the chassis
housing. Swing the PWB clear of the mator pulley
and belt drive. There are three connectors still
fastened to the PWB; they do not have tobe dis-
connected.
7. Remove the disk drive belt.
8. Using a1/16 in. Allen wrench, remove the small
pulley on the motor shaft.
9.
In5ta11 the new pulley and new drive belt.
10. Re-instal1 the PWB and disk drive unit; re-install
aIl modules except for the MemoryVid'eo module.
Il. Remove the ribbon cable cannectors from Pl,
then P2, of the Men10ry board.
12. Separate the Memory and Video boards by
removing the four corner, and two middle, Phil-
lips-heàd screws that hald the boards together.
13. Fasten the Memory board to the. NEW Video
board.
14. Re-connect the ribbon cab les ta P2, then Pl, of
the Memory board.
12
15. Re-install the Memory-Video rnodule in the 8510
backplane, then replace the module retainer
bracket.
16. Re-install the unit covers. (
(

)
8 BASIC TROUBLESHOOTING
DlJE Tü THE COMPLEXITY OF THE SYS'TEM AND
TI-IE REQUIREMENT FOR TEST E(~UI.PMENT,
REPAIRS AND/OR ADJUSTMENTS Ta THE VAR-
IOUS SUBSYSTEMS OF THE8510/a SHOULD ONL y
BE PERFORMED SY QUALIFIED TECHNîCAL
PERSONNEL ..
The following procedures in Figure 8~ 1 are intended as a
fundarrlental guide for problerns
that could prevent the
execution of the Systenl Acceptance Tests. These
procedures can help ta isoiate aproblen1, and in 50
doing, effect a faster solution \tvhen contacting TERAK's
Product Service Department. Be sure to include the unit
seriaI numbers in any telephone or letters
correspondence with TERAI< Product Service.
WARNING
The voltaqes required by the system are patentially
hazardous. Only technically-qualified personnel
should perform the troubleshooting stepsenclosed
within this type of box.
Voltage and frequency of power source matches
voltage and frequency labels of aIl units.
,
Yes
t
r-- No ~_= _______.1._ ... _
Set 8510, 8512, 8515 &8532-1 units to proper
voltage &frequency.
.... --~--~~-- Yes
Yes
N0
't
Check line fuses, cords and power source. Remove
air filters
ta verify that the fan impellers rota te
~
l:eel
y.Air
exhausts from 851~ only.
,
No
L+
Verify that voltage & frequency of power source
matches voltage &frequency setting of aIl units, by
removing
covers &inspecting power supply.
Jo
-
Yes
Air filters
are clean. Yes
No
[ Clean air filters. \--No
Air exhaust flow is weak.
Turn on system at 8510 and (if present) 8515 units.
Air
is exhausting trom front panels of aIl (8510,8512 ..
and 8515) units.
Power switch on 8510 &8515 units rotates freely to
upper position, returns to center position when
released. No significant drag is present.
Check that aH floppy disk daisy chain cab les are
propet-ly installed. Relay click can be heard inside
8532-1
or 8512 units.
'No'
No
Remove 8510 caver. Check power supply module
by observing LED lights. AC power indicated O.K.
,)
Loosen caver &realign with power
switch rocker.
Yes
!
A
Figure 8-1 Troubleshooting Guide
No
+
BD
0011-000
13

AB
1
No
Investigate voltage & frequency of local 'power.
Correct power supply voltage selection, if
required.
c
y~s
~_--L--
OC power is indicated O.K~
o
Yes
No
Replace power supply Inodule.
~------No-------'
Yes
----,- ....... -----,---- .... ----------------------""""--'-----v..
Verify that aIl PWBs are fully inserted and that the retaining clamp is mounted firmly. Verity that aIl fIat
cables
are securely mounted ta their corresponding edge connector on the PWBs. Ifrequired, remove the
PWBs and clean the edge fingerswith a clean cloth and a.lcohol, search for components on the PWBs
which may have been damaged during shipment, service, or systen1 configuring, then remount in original
arder and sec ure with retaining clamp. Verify that aIl connectors in the chassis harness are fully seated.
Relay click can be heard inside 8532-1 unit, but not inside 8512 unit.
Replace Happy disk controller, EIB, or daisy chain
cables.
No
Yes 1
____ -1.,_-----.
(
No
Verify that keyboard is connected to video EIB.
Remove cable and rneasure 4.7 ta 5.3 volts OC
between pins 1 and 3of the video EIB keyboard
connector.
Remove the keyboard caver. Verify that the
connector on the edge of the keyboard PWB is
securely in place. Inspect keyboard for damage
during shipment.
Relay click can be heard inside 8512 unit, but not
inside 8532-1 unit.
Verify distributionof
power through system PWBs,
harness, EIBs andcables.
Replace video controller~
video EIB, or video cable.
Ye~et switches. 1
'EML/KBD' switch on the video EIB is set off and
left four switches on the seriaI interface are set on-
off-an-off.
Type 'lock' key on keyboard. Red light appears
through key. Type 'shift' key on keyboard. Red
light is extinguished.
"-'-----. -----~------~------
r..---_- ~Iro--_ .. ;_----_-------J
\'es
......-- f ____
Mount system acceptance disk inta 8510 unit.
Diskette bottoms into drive with aclick, stays in
place
and drive door closes and latches.
No
Yes
!
E(
Figure 8-1 Troubleshooting Guide
0011-000
14