Amiga 1010 User manual

AMIGA EXTERNAL DRIVE
MODEL 1010
ASSEM BLY LEVEL REPAIR
PN 314039-01
Commodore-Amiga, Inc.
1200 Wilson Drive, West Chester, Pennsylvania 19380 U.S.A.
Commodore-Amiga Inc. makes no expressed or im
plied warranties with regard to the information con
tained herein. The information is made availa le
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quality and accuracy is with the user. Commodore-
Amiga Inc. shall not e lia le for any consequen
tial or incidental damages in connection with the
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of any availa le replacement part herein does not
constitute in any case a recommendation, warranty
or guaranty as to quality or suita ility of such
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Copyright © 1986 y Commodore-Amiga Inc.
All rights reserved.

AMIGA 1010 ASSEMBLY LEVEL REPAIR
INTRODUCTION
The A IGA 1010 Assembly Level Repair module is divided into 3 sections:
Section 1:
Section 2:
Section 3:
Set-up & Test
External Drive Disassem ly
External Drive Assem ly
Section 1 is intended to instruct the technician in proper set-up and diagnosis
of problems to the ASSE BLY LEVEL. Assembly level may be defined as those
portions of the unit that may be easily disassembled and replaced without in
volvement with chip/component repair.
Section 2 is a step-by-step illustration of how to remove the various assemblies
from the unit. An overview of the assemblies is given on page 2-1.
Section 3 is a guide to re-assembling the drive after a repair is completed.
WARRANTY REPAIR is to be accomplished at the ASSE BLY LEVEL. That is,
as it is described within these 3 sections. Out-of-warranty repair at the compo
nent (chip) level will be introduced to the AQS center in a timely'manner.

AMIGA 1010 ASSEMBLY LEVEL REPAIR
SECTION 1. SET-UP & TESTING
1.1 OVERVIEW
There are 2 main assemblies that could fail in the 1010 external drive. They are the drive mechanism
and the interface PCB with cable. The 1010 is powered by the A IGA; therefore, it does NOT con
tain a power supply.
The first step in troubleshooting a 1010 is to duplicate the customer complaint to verify that the
problem is in fact the external drive and not the computer or the software.
The test procedures that follow are based upon using a "Known Good" A IGA computer and
diskettes.
NOTE
Before proceeding VERIFY that connector J7 on the A IGA CO PUTER
mother board has ALL pins. A few units have been discovered with pin 23,
+ 12V, missing. At this time, we believe this problem has been corrected but
feel that you should be aware of the situation.
When a 1010 external drive is connected to the A IGA, the internal drive is configured as DF0
and the 1010 drive becomes DF1.
1.2 PRELIMINARY NOTES
Required Equipment:
Kickstart Disk*
Workbench Disk*
Blank Disk or Disk for Testing
onitor
Amiga Computer
Known Good Drive echanism
OPTIONAL: Service Diagnostic Aide
•Version 1.0 or 1.1 may be used.
If a SOFTWARE PROBLE is suspected, verify that the software package operates COR
RECTLY ON A "Known Good" system before beginning test on the "Suspected Bad"
system.
1.2.1 ALWAYS turn the computer OFF when installing or removing a peripheral device, for example
the 1010, 1020 or 1050.
1.2.2 When the system is POWERED-DOWN, it should be left OFF for at least 5 seconds before it is
powered up again.
IF THIS IS NOT DONE, THE AC POWER SWITCH AY FAIL.
Whenever possible, RESET the system by depressing the "CNTRL" key and both "A " keys,
simultaneously.
1-1

AMIGA 1010 ASSEMBLY LEVEL REPAIR
1.2.3 It may be necessary to insert a diskette ORE THAN ONCE before it is seated correctly
in the drive. Continued difficulty in correctly seating the disk indicates a defective or incom
patible disk or a drive mechanical problem.
1.2.4 NEVER remove a disk when the DISK ACCESS LED is ON. Damage to the disk may result.
If the system LOCKS-UP, RESET it by depressing the "CNTRL" key and both "A " keys,
simultaneously.
1.2.5 If an assembly is replaced, ALL case and shield screws must be re-installed.
IF SCREWS ARE ISSING, EXCESSIVE RF NOISE AY RESULT.
1.3 SYSTEM POWER UP
1.3.1 Connect AC power, the keyboard, a mouse (if not available, see below), the monitor
and the 3.5" external drive to the A IGA computer. DO NOT connect any other devices
to the computer at this time.
ouseless Operation of the Amiga
On the A IGA, anything you can do with the mouse you can also do from the keyboard:
• Pressing, at the same time, an A IGA key and one of the cursor keys (the keys with
arrows on top that are to the right of and slightly below the RETURN key) moves the
Pointer in the direction of the arrow.
• Pressing, at the same time, an A IGA key, the SHIFT key, and one of the cursor keys
also moves the Pointer, but faster.
- • Pressing, at the same time, the left A IGA key and the left ALT key (the key just to
the left of the left A IGA key) is like pressing the Selection button, the left button on
the mouse.
• Pressing, at the same time, the right A IGA key and the right ALT key (the key just
to the right of the right A IGA key) is like pressing the enu button, the right button
on the mouse.
1.3.2 Turn the POWER SWITCH, located on the left side of the computer toward the front, to the ON
position. The 3.5 external drive does not have its own power supply and is powered by the
computer.
1.3.3 The RED Power LED, located at the left front corner of the computer, should BLINK on
system power-up, then display solid red. The LED of the external drive should remain off until a disk
is inserted. If a disk is already in the external drive (not recommended), the A IGA will not
access it until the WORKBENCH is loaded.
1.3.4 In approximately 20 seconds, the screen should turn white and, approximately 5 seconds
later, a hand should be displayed holding a diskette labeled KICKSTART.
The system is requesting the Boot-Up diskette, called KICKSTART, to be inserted.
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AMIGA 1010 ASSEMBLY LEVEL REPAIR
1.3.5 Insert the diskette labeled KICKSTART into the INTERNAL drive.
At this time, the screen should turn white as the system loads the disk. The drive activity light
will flash briefly and the drive access sounds should be heard. After approximately 30 seconds
and some screen changes, the system should display a hand holding a diskette labeled
WORKBENCH.
t
• If the hand holding the diskette labeled KICKSTART REAPPEARS, re-seat the diskette and
RETRY. If after 3 or 4 retries, the system still does not accept the KICKSTART diskette, try
a DIFFERENT COPY of the disk.
• If the disk still WILL NOT LOAD, refer to the A IGA 1000 ASSE BLY LEVEL REPAIR, 1.7
DRIVE ASSE BLY CHECK.
1.3.6 Remove the KICKSTART disk.
1.3.7 Insert the diskette labeled WORKBENCH into the INTERNAL drive.
At this time, the screen will turn white for approximately 2 seconds and then display the boot
up message while continuing to load from the disk.
• If the hand holding the diskette labeled WORKBENCH REAPPEARS, re-seat the diskette and
RETRY. If after 3 or 4 retries, the system still does not accept the WORKBENCH diskette, try
a DIFFERENT copy of the disk.
• If the disk STILL WILL NOT LOAD, refer to the A IGA 1000 ASSE BLY LEVEL REPAIR, 1.7
DRIVE ASSE BLY CHECK.
When loading is complete, the screen will be blue with the WORKBENCH DISK ICON in the upper
right hand corner. The TITLE BAR message will be:
Amiga Workbench Version 1.0 167840 free memory
or
Workbench release 1.1: 141496 free memory
1.4 EXTERNAL DRIVE TEST
NOTE: WRITE-PROTECT ALL VOLU E DISKS
BEFORE BEGINNING!
• Slide the write-protect tab up toward the edge
of the disk to expose the small hole in the disk
case.
1.4.1 Remove the WORKBENCH DISK from DFO (internal drive) and insert it into DF1
(external drive).
When the disk is inserted, the external drive LED will flash. The WORKBENCH ICON will remain
on the screen.
1-3

AMIGA 1010 ASSEMBLY LEVEL REPAIR
1.4.2 Select the WORKBENCH DISK with the mouse.
With the pointer on the WORKBENCH DISK ICON, double-click the left mouse button. The
WORKBENCH WINDOW will be displayed.
The LED will flash as the WORKBENCH window is being loaded from DF1.
• If the WORKBENCH window will not load from the 1010, refer to 1.5 DRIVE ASSE BLY CHECK
and 1.6 EXTERNAL DRIVE INTERFACE PCB.
1.4.3 Select INFO from the TITLE BAR ENU.
Press and hold the right mouse button while sliding the pointer to the upper left corner of the title
bar. When the pointer is over the word Workbench, the word will highlight and the menu selec
tion will be displayed.
Continue to depress the right mouse button and slide the pointer down to the word INFO and,
when INFO is highlighted, release the right mouse button.
The INFO WINDOW will be displayed.
The STATUS window should indicate READ ONLY.
• If the status is READ/WRITE, the WRITE-PROTECT SENSOR is not operating properly and a
drive replacement is necessary. Refer to SECTION 2 DRIVE DISASSE BLY.
1.4.4 Record the SIZE information for the disk to use as a comparison when your DISKCOPY is
complete.
1.4.5 Select QUIT in the lower right-hand corner of the window.
With the mouse, move the pointer onto QUIT and click the left button once.
1.4.6 Remove the VOLU E WORKBENCH disk from DF1 and return it to DFO.
1.4.7 Insert a TEST or BLANK DISK that is NOT write-protected into DF1.
An additional ICON will appear on the screen.
1.4.8 COPY the VOLU E WORKBENCH DISK onto the TEST DISK.
With the mouse, move the pointer to the WORKBENCH ICON. Press and HOLD the LEFT OUSE
button. When the red e symbol appears, slide it onto the DF1 ICON and release.
The DISKCOPY window will appear.
1.4.9 Select CONTINUE from the DISKCOPY window.
Once you are certain that your "FRO ” and "TO " disks are correctly inserted, move the pointer
to CONTINUE and click the left mouse button once.
DFO AND DF1 BUSY will be displayed during the copy process.
1-4

AMIGA 1010 ASSEMBLY LEVEL REPAIR
WHEN THE DISKCOPY is completed the window will clear and an ICON for the copy of
WORKBENCH will be displayed.
• During the DISKCOPY the drive is writing, reading and verifying data. If the copy is completed
without a problem continue to 1.4.10.
• If a problem is encountered, try a DIFFERENT DESTINATION DISK or a DIFFERENT SOURCE
DISK.
• If the problem continues, refer to 1.5 DRIVE ASSE BLY CHECK.
1.4.10 Remove both DISKS from their respective drives.
1.4.11 Insert the COPY OF WORKBENCH into DFO, the internal drive.
1.4.12 RE-BOOT the system.
The system will now load the WORKBENCH from the copy disk.
• If a problem is encountered, a write or compatibility problem exists with the external drive.
Refer to 1.5 DRIVE ASSE BLY CHECK.
1.4.13 Select the COPY OF WORKBENCH ICON with the mouse.
With the pointer on the DISK ICON, double-click the left mouse button. The WORKBENCH WIN
DOW will be displayed.
1.4.14 Select the UTILITIES DRAWER with the mouse.
With the pointer on the UTILITIES DRAWER, double-click the left mouse button. The UTILITIES
WINDOW will appear.
1.4.15 Select the NOTEPAD ICON.
With the pointer on the NOTEPAD ICON, double-click the left mouse button.
1.4.16 Select the SAPPHIRE 19 FONT.
When the NOTEPAD WINDOW appears, move the pointer to the TITLE BAR. Depress the right
mouse button and slide the pointer to FONT. Still holding the right mouse button, slide the pointer
down to SAPPHIRE and then across and down to 19. When SAPPHIRE and 19 are both
highlighted, release the mouse button.
• If the NOTEPAD and FONT loaded without difficulty, DFO has been able to read TRACK 79
of the disk that was just written in DF1. Alignment and drive speed problems are usually detected
above TRACK 75. Therefore, the COPY can be considered "good” .
• If the NOTEPAD and FONT will NOT load, DFO cannot read what was written by DF1. Refer
to 1.5 DRIVE ASSE BLY CHECK.
1-5

AMIGA 1010 ASSEMBL Y LEVEL REPAIR
1.5 DRIVE ASSEMBLY CHECK
1.5.1 Follow the DISASSE BLY sequence in SECTION 2 to obtain access to the drive.
1.5.2 To check the DRIVE ASSE BLY in an external unit, disconnect the power and ribbon
cables from the back of the drive. Place a "known good" drive assembly on top of the
bottom RFI shield and connect the cables to it.
1.5.3 Power-up the system and begin testing from the start.
• If the system now PASSES all tests, EXCHANGE the DRIVE ASSE BLY in the external unit.
• If the system still FAILS, the INTERFACE PCB may be at fault.
Refer to 1.6, EXTERNAL DRIVE INTERFACE PCB.
1.6 EXTERNAL DRIVE INTERFACE PCB
1.6.1 DISK INTERFACE SIGNALS
The signals involved with interfacing the A IGA computer and an external drive are as
follows: ^PIN 1
PIN 13
Fig. 1-1. J7 Female AMIGA Connector
1RDY Disk Ready — A ctiv e LO W
2DKRD Disk R EAD D A TA - A ctiv e LO W
3 -7 G N D Ground
8M T R X D Disk M O TO R control — A ctiv e LO W
9SEL2B SELECT drive 2 - B u ffered , A ctiv e LOW
10 DRESB Disk RESET - B uffered, A ctive LO W
11 C H N G Disk CH AN GE sense. W h en disk has een rem oved from drive, latched high
until heads are stepped — A ctive LO W
12 + 5V
13 SID EB Select a specific HEAD — Buffered, LOW = UPPER head, HIG H = LO WER head
14 W P R O Disk is W RITE PR O TECTED - A ctive LO W
15 TKO Disk heads cu rrently positioned at T R AC K 0 / — A ctive LO W
16 DK W EB Disk W R ITE ENABLE - B uffe red, A ctiv e LO W
17 D KW D B Disk W R ITE D A TA - B uffered, A ctive LO W
18 STEPB STEP th e heads o f th e disk — Bu ffered, A ctiv e LO W
19 DIRB Disk head seek D IR EC T IO N — B u ffered,
LO W = Tow ard C enter Spindle, HIG H = Tow ard TRK 0 (O uter Edge of Dsk)
2 0 SEL3B S ELECT drive 3 - B u ffered, A ctive LO W
21 SEL1B SELECT drive 1 - B uffered, A ctiv e LO W
2 2 IN D E X Disk IN DE X pulse — A ctiv e L O W
2 3 + 1 2V
1-6

AMIGA 1010 ASSEMBLY LEVEL REPAIR
1.6.2 Follow the DISASSE BLY sequence in SECTION 2 to obtain access to the interface PCB.
1.6.3 Assuming that you are using a "Known Good" A IGA to test the 1010, proceed to
1.6.4, interface PCB layout and schematic and trace the signals listed in 1.6.1 through the
interface circuitry.
1.6.4 INTERFACE PCB ASSY. #327204
J5 23 PIN 34 PIN J2 23 PIN
MALE J4 HEADER FEMALE
Fig. 1-3. Interface Schematic
1-7

AMIGA 1010 ASSEMBLY LEVEL REPAIR
SECTION 2. 3. " EXTERNAL DRIVE
DISASSEM BLY
2.1 ASSEMBLY OVERVIEW
ACTUAL SIZE
1A1
ABc
POS. DESCRIPTION PART NO.
1TOP CASE 327011-01
2 RFI TOP SHIELD 327116-01
3DRIVE MTG. BRACKET-NEC
DRIVE MTG. BRACKET-PANA 327143-01 327144-01
43 . ” DRIVE ASSY-NEC
3 . ” DRIVE ASSY-PANA 327141-01
327142-01
DISK EJECT BU1TON-NEC
DISK EJECT BUTTON-PANA 327006-01 328117-01
6 INTERFACE PCB ASSY 327204-01
7INTERFACE CABLE ASSY 327164-01
8 CABLE CLAMP ASSY 327208-01
9RFI BOTTOM SHIELD 327117-01
10 BOTTOM CASE 327010-01
11 LED ASSY-NEC
LED ASSY-PANA 32717 -01
32717 -02
12 RUBBER FOOT 3270 3-01
13 FRONT BEZEL 327012-01
14 NAMEPLATE-AMIGA LOGO 327113-01
PARTS NOT ILLUSTRATED:
RIBBON CABLE ASSY-DATA 327206-01
'CABLE ASSY-POWER 327207-01
USERS INSTRUCTION SHEET 327202-01
f t
Fig. 2-1. Assembly Overview
THE AJOR ASSE BLIES IDENTIFIED
2-1