Dec 072017
 
Product and Service information about Miniscribe 3650 - 40 meg hard drive. Includes set up, jumpers, technical description and how to interpert flashing LED errors.
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Product and Service information about Miniscribe 3650 – 40 meg hard drive. Includes set up, jumpers, technical description and how to interpert flashing LED errors.
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Contents of the 3650_PM.TXT file


















MINISCRIBE XI

PRODUCT MANUAL

MODEL 3650



P/N 1076
Revision G
May 26, 1988





(Subject to Change Without Notice)

















MiniScribe Corporation
1861 Lefthand Circle
Longmont, Colorado 80501
(303) 651-6000
REVISIONS MANUAL NO.
1076
|----|--------|-------|------------------------------|--------|
| RV | EC NO. | SECT. | DESCRIPTION | DATE |
|----|--------|-------|------------------------------|--------|
| A | 71181 | All |Initial Release |04/07/87|
|----|--------|-------|------------------------------|--------|
| B | 71600M | 5.2 |Replace Single Pack Shipping |05/06/87|
| | |Fig 5-3|Container B with new Single | |
| | | |Pack Container | |
|----|--------|-------|------------------------------|--------|
| C | 71650 | All |Correct errors. |10/13/87|
|----|--------|-------|------------------------------|--------|
| D | 71679M | 5.1.2 |Remove reference to AutoPark. |01/22/88|
|----|--------|-------|------------------------------|--------|
| E | 71668M | 5.1.2 |Add reference to AutoPark. |02/02/88|
|----|--------|-------|------------------------------|--------|
| F | 71706 | 2.6 |50 was 30. 16 was 10. |04/08/88|
|----|--------|-------|------------------------------|--------|
| G | 71655M | 5.5.3 |Add Single Pack Shipping |05/26/88|
| | | |Container C. | |
| | |Fig 5-4|Unpackaging instructions and | |
| | | |Figure 5-4. | |
| | |5-5,5-6|Figure 5-5 was 5-4, 5-6 was | |
| | | |5-5. | |
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TABLE OF CONTENTS

Section Page

1.0 Introduction........................................... 1

2.0 Product Specifications................................. 2
2.1 Model Specifications.............................. 2
2.2 Performance Specifications........................ 2
2.3 Power Requirements................................ 2
2.4 Physical Characteristics.......................... 3
2.5 Environmental Characteristics..................... 3
2.6 Reliability and Maintenance....................... 3
2.7 General Characteristics........................... 4
2.8 Shock and Vibration............................... 4
2.9 Magnetic Field.................................... 4
2.10 Acoustic Noise.................................... 4
2.11 Safety Standards.................................. 4

3.0 Electrical Interface................................... 5
3.1 Control Input Signals............................. 8
3.2 Control Output Signals............................ 10
3.3 Data Transfer Signals............................. 12

4.0 Physical Interface..................................... 15
4.1 P1 Connector - Control Signals.................... 15
4.2 P2 Connector - Data Signals....................... 16
4.3 P3 Connector - DC Power........................... 16
4.4 P4 Connector - Frame Ground....................... 16

5.0 Installation........................................... 17
5.1 Customer Options.................................. 17
5.2 Terminators....................................... 18
5.3 Error Messages.................................... 18
5.4 Message Readout................................... 18
5.5 Unpacking and Inspection.......................... 19
5.6 Repacking......................................... 25
5.7 Recommended Mounting.............................. 26
5.8 Cabling........................................... 26
LIST OF FIGURES

Figure Page

3-1 Cable Interconnection - 4 Drive System................. 7

3-2 Control Signal Driver/Receiver Equivalent Circuit...... 8

3-3 Seek Mode Timing....................................... 10

3-4 Data Signal Driver Receiver............................ 12

3-5 Read/Write Timing...................................... 14

4-1 P1/P2 Connector........................................ 15

4-2 P3 Connector........................................... 16

5-1 Jumper Strip........................................... 17

5-2 Single Pack Shipping Container A....................... 20

5-3 Single Pack Shipping Container B....................... 21

5-4 Single Pack Shipping Container C....................... 23

5-5 Multipack Shipping Container........................... 24

5-6 Outline and Mounting Dimensions........................ 27



LIST OF TABLES

Table Page

3-1 P1/P2/P3/P4 Connector Pin Assignment................... 6

3-2 Write Precompensation Rules............................ 13

5-1 Drive Selection Configuration.......................... 18


1.0 INTRODUCTION

The MiniScribe 3650 is a half-height random access 5-1/4 inch
rigid media disk drive employing Winchester technology. The
drive utilizes a rack-and-pinion actuator, microprocessor
control, and open loop stepper head positioning.

The Model 3650 features power up diagnostics, buffered seek
and 5 Megabit/Sec transfer rate. D.C. voltages and physical
form factor are the same as the 5-1/4 inch half height flop-
py disk drive.

This equipment generates and uses radio frequency energy, and
if not installed and used properly, that is in strict
accordance with the manufacturer's instructions, may cause
interference to radio and television reception. This product
has been type tested in a representative system, and found to
comply with the limits for a Class B computing device in
accordance with specifications in Subpart 2 of Part 15 of FCC
rules which are designed to provide reasonable protection
against such interference in a residential installation. This
does not imply that this product guarantees FCC compliance in
any given system. It is the responsibility of the installing
systems manufacturer to insure system assembly EMC compliance.
MiniScribe maintains product compliance regarding FCC
requirements and will provide technical assistance in securing
system product compliance where appropriate.

If the system equipment does cause interference to radio or
television reception (this can be determined by turning the
equipment off and on), the user is encouraged to try to
correct the interference by using one or more of the following
measures:

- Reorient the receiving antenna
- Relocate the computer with respect to the receiver
- Move the computer away from the receiver

It is recommended that shielded interface cable be used to
ensure compliance with FCC emission limits.

2.0 PRODUCT SPECIFICATIONS

2.1 MODEL SPECIFICATIONS


Storage Capacity:

Unformatted Model 3650

Per Drive 50,559,264 Bytes
Per Surface 8,426,544 Bytes
Per Track 10,416 Bytes
Per Cylinder 62,496 Bytes

Disks 3
Recording Heads 6
Cylinders 809
Data Tracks 4854

Recording Density:
Areal (TPI x BPI) 7.72 Mbits/sq.in.
Linear (MFM) 10,124 bpi
Radial 763 tpi


2.2 PERFORMANCE SPECIFICATIONS

Rotational Rate 3600 RPM +0.5%

Data Transfer Rate 5.0 Mbits/second

Access Time
Average Latency 8.33 ms

Seek Time (including settling time)
Single Track 15 ms
Average 61 ms
Maximum 132 ms


2.3 POWER REQUIREMENTS

DC Input +12 Volts DC
Steady State: +5%, 1.3 amps typical, 1.5 amps
maximum.
Maximum Ripple allowed is 1% with equivalent
resistive load.
Start Surge: 3.5 amps maximum, initial 10 seconds.

+5 Volts DC
+5%, 0.5 amps typical, 0.7 amps maximum.
Maximum Ripple allowed is 2% with equivalent
resistive load.


AC Input None Required

Power Dissipation 18.1 watts typical, 21.5 watts maximum


2.4 PHYSICAL CHARACTERISTICS


Outline Dimensions See Figure 5-5
Mounting Dimensions See Figure 5-5
Weight 3.5 pounds


2.5 ENVIRONMENTAL CHARACTERISTICS

Temperature:

Operative (stabilized) 40F (4C) to 122F (50C)
Non-operative -40F (-40C) to 135F (57C)
Thermal Gradient 18F/hr (10C/hr) maximum

Humidity:

Operative & Non-operative 8% to 80% noncondensing
Maximum Wet Bulb 78F (26C)

Altitude (relative to sea level):

Operative -200 to 10,000 feet
Non-operative (maximum) 40,000 feet


2.6 RELIABILITY AND MAINTENANCE

MTBF 15,000 hours (continuous
operation at 35C)

MTTR 30 minutes

Preventative Maintenance None

Component Design Life 5 years

Data Reliability 1 recoverable error in
1010bits read
1 permanent error in 1012
bits read (not recoverable
in 16 reads)
1 seek error in 106 seeks

Media Defect Criteria (as shipped from MiniScribe)

Model 3650 50 defects maximum per drive
16 defects maximum per surface

Defect < 2 bytes in length
Defects may be contiguous
Cylinder Zero Defect Free.


2.7 GENERAL CHARACTERISTICS

Start Time (Typical) 22 seconds from power
application to -READY

Stop Time (Typical) 20 seconds from power removal


2.8 SHOCK AND VIBRATION

Non-operational Shock 40 G's, 10 ms pulse
duration, 1/2 sine wave

Non-operational Vibration 5 to 36 Hz -.05 in DA
(peak to peak)
36 to 250 Hz - 3.0 G's

Operational Shock 4 G's, 10 ms pulse
duration, 1/2 sine wave

Operational Vibration 5 to 12 Hz -.05 in DA
(peak to peak)
12 to 250 Hz - .35 G
(random seek/read)


2.9 MAGNETIC FIELD

The externally induced magnetic flux density may not exceed
3 Gauss as measured at the disk surface.


2.10 ACOUSTIC NOISE

20 - 20,000 Hz 50 dBA maximum at 1 meter
(on track mode)


2.11 SAFETY STANDARDS

The MiniScribe Model 3650 disk drive shall comply with
relevant product safety standards such as UL, CSA, TUV and
FCC Rules and Regulations.


3.0 ELECTRICAL INTERFACE

The interface to the MiniScribe 3650 can be divided into three
categories, each of which is physically separated: Control
Signals, Data Signals and DC Power.

All Control Signals are digital in nature (open collector TTL)
and either provide signals to the drive (input) or signals to
the controller (output). The Data Signals are differential
in nature and provide data either to (write) or from (read)
the drive.

Table 3-1 provides the connector pin assignments for P1 and
P2. The interconnect cable between the drive and controller
may be flat ribbon or twisted pairs of a length not to exceed
20 feet. The signal return lines and ground lines for P1 and
P2 should be grounded at the controller.

Table 3-1 also provides the connector pin assignments for P3.
The voltage return lines of P3 should only be grounded at the
power supply.

Connector P4 is a spade lug connector tied to frame ground.

The cable interconnection for a 4 drive system is defined in
Figure 3-1.


Ground
Signal Return Signal Name

P1-2 P1-1 Reserved
P1-4 P1-3 Head Select 22
P1-6 P1-5 -Write Gate
P1-8 P1-7 -Seek Complete
P1-10 P1-9 -Track Zero
P1-12 P1-11 -Write Fault
P1-14 P1-13 -Head Select 20
P1-16 P1-15 Reserved
P1-18 P1-17 -Head Select 21
P1-20 P1-19 -Index
P1-22 P1-21 -Ready
P1-24 P1-23 -Step
P1-26 P1-25 -Drive Select 1
P1-28 P1-27 -Drive Select 2
P1-30 P1-29 -Drive Select 3
P1-32 P1-31 -Drive Select 4
P1-34 P1-33 -Direction In


P2-1 P2-2 -Selected
P2-3 P2-4 Reserved
P2-5 P2-6 Spare
P2-7 P2-8 Reserved
P2-9 Spare
P2-10 Spare
P2-11 P2-12 Ground
P2-13 +MFM Write Data
P2-14 -MFM Write Data
P2-15 P2-16 Ground
P2-17 +MFM Read Data
P2-18 -MFM Read Data
P2-19 P2-20 Ground


P3-1 +12 Volts DC
P3-2 +12 Volts DC Return
P3-3 +5 Volts DC Return
P3-4 +5 Volts DC


P4 Frame Ground
Figure 3-1
CABLE INTERCONNECTION - 4 DRIVE SYSTEM

3.1 CONTROL INPUT SIGNALS

The Control Input Signals are gated into the drive by the
activation of the appropriate -DRIVE SELECT line. Refer to
Figure 3-2 for the driver/receiver equivalent circuit and
signal level specification. Each Control Input Signal is
terminated by a 220/330 ohm resistor network in the drive.


3.1.1 -WRITE GATE

The true state of this signal enables write data to be
written on the disk. The false state of this signal
enables data to be transferred from the drive.

3.1.2 -HEAD SELECT 20, 21 AND 22

These three signals provide for the selection of each
individual Read/Write head in a binary coded se-
quence. -Head Select 20 is the least significant
signal. Heads are numbered 0 through 5. When all Head
Select lines are false, Head 0 will be selected.


CONTROL SIGNAL DRIVER/RECEIVER EQUIVALENT CIRCUIT
3.1.3 -DIRECTION IN

This signal defines direction of motion of the Read/Wr-
ite heads when the -STEP line is pulsed. A high level
defines the direction as "out", and if a pulse is
applied to the -STEP line the Read/Write heads will
move away from the center of the disk. If this line
is a low level the direction of motion is defined as
"in", and the step pulses will cause the Read/Write
heads to move toward the center of the disk. Change
in direction must meet the requirements shown in Figure 3-3.

3.1.4 -STEP

This control signal causes the Read/Write heads to move
with the direction defined by the -DIRECTION IN line.

The drive is able to accept step pulses in two modes,
track-to-track and buffered. In the track-to-track
mode, step pulses should be sent at a 3 ms rate or
greater to access the desired track. In the buffered
mode, step pulses must be sent at a 2 us to 200 us
rate. In this mode, pulses are accumulated until no
new pulses have been received for 500 us. At this
point access motion is initiated, and an optimized seek
algorithm is executed to minimize access time. Pulses
that occur after this time and prior to completion of
the seek will be ignored. The drive automatically
decides which mode to use based on the incoming step
pulse rate. The direction line should be maintained
at the desired level 100 ns before the first step pulse
and until 100 ns after the last step pulse has been
issued. Refer to Figure 3-3 for the timing diagram.

3.1.5 -DRIVE SELECT 0, 1, 2, AND 3

-DRIVE SELECT, when low, connects the drive to the
control lines. Installing the appropriate jumpers on
the Printed Circuit Board (see Table 5-1, Drive
Selection Configuration) will determine which select
line on the interface will activate the drive.


3.2 CONTROL OUTPUT SIGNALS

The Control Output Signals are gated from the drive by the
activation of the appropriate -DRIVE SELECT line. Refer to
Figure 3-2 for the driver/receiver circuit and signal level
specifications. Each Control Output Signal should be ter-
minated in the controller with a 220/330 ohm resistor network.



3.2.1 -SEEK COMPLETE

This signal will go true when the Read/Write heads have
settled on the final track at the end of a seek.
Reading or writing should not be attempted when -SEEK
COMPLETE is false.

-SEEK COMPLETE will go false if a recalibration se-
quence is initiated (by drive logic) at power on, or
500 ns (typical) after the leading edge of a step pulse.


3.2.2 -TRACK ZERO

This interface signal indicates a true state only when
the drive`s Read/Write heads are positioned at Track
Zero (the outermost data track).

3.2.3 -WRITE FAULT

This signal is used to indicate that a condition exists
in the drive which will result in improper writing on
the disk. When this signal is true, further writing
is inhibited at the drive until the condition is cor-
rected. Once corrected, the controller can reset this
line by deselecting the drive. Any of the following
four conditions could cause -WRITE FAULT to be true.

1. No write current sensed in the head with -WRITE
GATE active and -DRIVE SELECTED.

2. An open head in the drive.

3. No transitions on MFM WRITE DATA line when -WRITE
GATE true.

4. DC voltages are out of tolerance.

3.2.4 -INDEX

This 100 microsecond (typical) interface pulse is
provided by the drive once each revolution (16.67 ms
nominal) to indicate the beginning of the track.
Normally, this signal is a high level and makes the
transition to the low level to indicate -INDEX. Only
the transition from high to low is valid.

3.2.5 -READY

This interface signal, when true together with -SEEK
COMPLETE, indicates that the drive is ready to read,
write, or seek, and that the I/O signals are valid.
When this signal is false, all writing and seeking are
inhibited.

The typical time after power on for -READY to be true
is 22 seconds.

3.2.6 -DRIVE SELECTED

The -DRIVE SELECTED signal will go true only when the
drive is programmed as drive X (X=0,1,2, or 3) and the
-DRIVE SELECT X line is activated by the controller.


3.3 DATA TRANSFER SIGNALS

All signals associated with the transfer of data between the
drive and the controller are differential in nature and are
gated by -DRIVE SELECT.

Two pairs of balanced signals are used for the transfer of
data: MFM WRITE DATA and MFM READ DATA. Figure 3-4 illus-
trates the driver/receiver combination used in the MiniScribe
3650 for data transfer signals.


3.3.1 MFM WRITE DATA

This is a differential pair that defines the transi-
tions to be written on the track. The transition of
the +MFM WRITE DATA line going more positive than the
-MFM WRITE DATA line will cause a flux reversal on the
track provided -WRITE GATE is true. The timing of the
write operation is illustrated in Figure 3-5.

In MFM recording, to optimize data integrity and meet
the error rate specified, the write data presented by
the controller must be precompensated from Track 128
to Track 808. + MFM Write Data pulses bounded on one
side by a 200 ns period (1/2F) and bounded on the other
side by 300 ns (1/1.5F) or 400 ns (1/F) period must
be precompensated by 12 ns towards the side of the 200
ns (1/2F) period. The precompensation is illustrated
in Table 3-2.


Table 3-2
WRITE PRECOMPENSATION RULES

Bit
1 2 3 4 Compensation

1 0 0 0 12 ns late on first clock
0 0 0 1 12 ns early on second clock
0 1 1 x 12 ns late on first data
1 1 0 x 12 ns early on second data


3.3.2 MFM READ DATA

The data recovered by reading a prerecorded track is
transmitted to the controller via the differential pair
of MFM READ DATA lines. The transition of the +MFM
READ DATA line going more positive than the -MFM READ
DATA line represents a flux reversal on the track of
the selected head. The timing of the read operation
is illustrated in Figure 3-5.
Figure 3-5
READ/WRITE TIMING

4.0 PHYSICAL INTERFACE

The electrical interface between the disk drive, the host
controller and the DC power supply is via four connectors: P1
- Control Signals, P2 - Read/Write Signals, P3 - DC Power
input, and P4 - Frame Ground.

Refer to Figure 10-1 for connector locations.


4.1 P1 CONNECTOR - CONTROL SIGNALS

Connection to P1 is through a 34 pin PCB edge connector. The
dimensions for this connector are shown in Figure 6-1. The
pins are numbered 1 through 34 with the odd pins located on
the component side of the Printed Circuit Board. A key slot
is provided between pins 4 and 6.


The recommended mating connector (J1) is AMP Ribbon Connector,
P/N 88373-3.


4.2 P2 CONNECTOR - DATA SIGNALS

Connection to P2 is through a 20 pin edge connector. The
dimensions for the connector are shown in Figure 4-1. The
pins are numbered 1 through 20 with the odd pins located on
the component side of the Printed Circuit Board. A key slot
is provided between pins 4 and 6.

The recommended mating connector (J2) is AMP Ribbon Connector,
P/N 88373-6.


4.3 P3 CONNECTOR - DC POWER

DC power connector (P3) is a 4 pin AMP Mate-N-Lok connector,
mounted on the PCB.

The recommended mating connector (J3) is AMP P/N 1-480424-0
utilizing AMP pins P/N 350078-4.



P3-1 = +12 VOLTS DC
P3-2 = +12V GROUND RETURN
P3-3 = +5V GROUND RETURN
P3-4 = +5 VOLTS DC

Figure 4-2
P3 CONNECTOR



4.4 P4 CONNECTOR - FRAME GROUND

Fasten AMP P/N 61761-2.

The recommended mating connector is AMP 62187-1.

If used, the hole in P4 will accommodate a wire size of 18
AWG maximum.


5.0 INSTALLATION

CAUTION/WARNING

THE MINISCRIBE DRIVE IS A PRECISION PRODUC-
T. DURING HANDLING THE UNIT MUST NOT BE
DROPPED, JARRED, OR BUMPED. OTHERWISE,
DAMAGE TO THE HEADS AND DISKS MAY OCCUR.
WHEN THE DRIVE IS REMOVED FROM THE MINI-
SCRIBE SHIPPING CONTAINER AND NOT IMMEDIAT-
ELY SECURED WITHIN A CHASSIS THROUGH ITS
SHOCK MOUNTS, IT MUST BE STORED ON A SOFT
PADDED CONDUCTIVE OR ANTISTATIC SURFACE.

FAILURE TO COMPLY WITH THE ABOVE PROCEDURE
WILL RENDER NULL AND VOID ALL WARRANTIES.


5.1 CUSTOMER OPTIONS

Customer optional features are implemented via jumpers on the
Printed Circuit Board. Refer to Figure 5-1 for the location
of the jumper pins, and to Table 5-1 for the placement of the
jumpers.


5.1.1 DRIVE SELECT

As shipped, the jumper is set to Drive 0 selected. To
select a different drive number in a daisy chain
operation, refer to Table 5-1 or 3-1.


Table 5-1
DRIVE SELECTION CONFIGURATION

Drive Select Number
Position 0 1 2 3

DS 0 jumper open open open
DS 1 open jumper open open
DS 2 open open jumper open
DS 3 open open open jumper



5.1.2 DRIVE EXERCISE OPTIONS

As shipped, there are jumpers on JP1 and JP2. JP1 and
JP2 jumpers are for factory test modes and must remain
on for normal operation. JP3 is the autopark feature
enable for PCBA module 02 ONLY and must be jumpered to
use the 15 second autopark feature. For other PCBA
modules JP3 MUST remain open for normal operation.


5.2 TERMINATORS

Each drive is shipped with a terminator pack providing the
220/330 ohm termination for the Control Input Signals. If
multiple drives are configured in a daisy chain configuration
(see Figure 3-1), the terminator pack must be removed from all
drives except the last unit on the daisy chain. Figure 5-1
(RP1) shows the location of the terminator pack.


5.3 ERROR MESSAGES

The microprocessor performs wake up diagnostics on power up.
Additionally, some operations are monitored during normal
operations. If an error is detected, the microprocessor will
flash a warning by blinking red activity LED.


5.4 MESSAGE READOUT

Error codes may be generated by the microprocessor to indicate
hardware failures or warnings that are detected during
power-on diagnostics, burn-in mode, or normal operation. Error
codes are displayed in a "morse-code" type manner. Bits may
be interpreted and converted into hexadecimal error codes.
"Zeros" are indicated by a short (1/2 second) flashing mode.
"Ones" are indicated by a short (1/2 second) continuous ON
mode. Error "Words" are separated by a one second LED off time.
Zero = 0.5 second flashing red mode
One = 0.5 second continuous red ON mode
Between Bits = 0.5 second Off
Between Repeat Cycles = 1.0 second Off

Listed below are the binary to hexadecimal conversion values:

0=0000 4=0100 8=1000 C=1100
1=0001 5=0101 9=1001 D=1101
2=0010 6=0110 A=1010 E=1110
3=0011 7=0111 B=1011 F=1111

Example: Code "E"

0.5 Sec ON
0.5 Sec OFF
0.5 Sec ON
0.5 Sec OFF
0.5 Sec ON
0.5 Sec OFF
0.5 Sec FLASHING
1.0 Sec OFF

MESSAGE DEFINITIONS

Code 0 - Microprocessor RAM error
Code 1 - Microprocessor ROM checksum error
Code 2 - Interface chip diagnostic failure
Code 3 - Write Fault latch will not reset
Code 4 - Index pulse not detected during spinup
Code 5 - Unable to reach 3600 rpm in 30 seconds
Code 6 - Unable to stabilize spin speed in 10 seconds
Code 7 - Unable to maintain spin speed to 0.5%
Code 8 - Unable to uncover Track Zero sensor
Code 9 - Unable to cover Track Zero sensor
Code A - Track Zero interrupter misadjusted
Code B - Shipping zone error, crash stop misadjusted
Code C - Carriage stuck during recal error
Code D - Seek error during burn-in or recal
Code E - Unused
Code F - Unexpected interrupt from processor


5.5 UNPACKING AND INSPECTION


5.5.1 SINGLE PACK A

Retain the packing materials for reuse. Refer to
Figure 5-2 for the following steps:

Step 1: Inspect the shipping container for evidence
of damage in transit. If damage is
evident, notify the carrier immediately.
Step 2: Ground out work area and operator to elimin-
ate electrostatic discharge.

Step 3: Open the outer carton by carefully cutting
the tape on the top of the carton.

Step 4: Lift the inner carton out of the outer carton
and remove the end foam cushions.


Step 5: Open the inner carton by carefully cutting
the tape on the top of the carton.

Step 6: Lift the drive from the inner carton and
remove the end foam cushions, the cardboard
wrap with spacer, and the conductive/antis-
tatic bag.

Step 7: Place the two pairs of end cushions, the
cardboard wrap with spacer, and the inner
carton within the outer carton and store for
subsequent use.

Step 8: Inspect the drive for shipping damage, loose
screws or components and correct if possible.
If damage is evident without noticeable
damage to the shipping cartons, notify
MiniScribe immediately for drive disposition.



5.5.2 SINGLE PACK B

Retain the packing materials for reuse. Refer to
Figure 5-3 for the following steps:

Step 1: Inspect the shipping container for evidence
of damage in transit. If damage is evident,
notify the carrier immediately.

Step 2: Ground out work area and operator to elimina-
te electrostatic discharge.

Step 3: Open the carton by carefully cutting the tape
on the top of the carton.

Step 4: Lift the top foam cushion out of the carton.

Step 5: Remove the drive in the antistatic bag from
its seat in the bottom foam cushion. Remove
the drive from the antistatic bag.



SINGLE PACK SHIPPING CONTAINER B
Step 6: Place the top foam cushion and the antistatic
bag back in the carton and store for subse-
quent use.

Step 7: Inspect the drive for shipping damage, loose
screws or components and correct if possible.
If damage is evident without noticeable
damage to the shipping cartons, notify
MiniScribe immediately for drive disposition.

5.5.3 SINGLE PACK C

Retain the packing materials for reuse. Refer to
Figure 5-4 for the following steps:

Step 1: Inspect the shipping container for evidence
of damage in transit. If damage is evident,
notify the carrier immediately.

Step 2: Ground out work area and operator to elimina-
te electrostatic discharge.

Step 3: Open the carton by carefully cutting the tape
on the top of the carton.

Step 4: Remove the drive in the antistatic bag from
its seat in the bottom foam cushion. Remove
the drive from the antistatic bag.

Step 5: Place the antistatic bag back in the carton
and store for subsequent use.

Step 6: Inspect the drive for shipping damage, loose
screws or components and correct if possible.

If damage is evident without noticeable
damage to the shipping carton, notify
MiniScribe immediately for drive disposition.
Figure 5-4
SINGLE PACK SHIPPING CONTAINER C

5.5.4 MULTIPACK

Retain the packing materials for reuse. Refer to
Figure 5-5 for the following steps:

Step 1: Inspect the shipping container for evidence
of damage in transit. If damage is evident,
notify the carrier immediately.


Step 2: Ground out work area and operator to elimin-
ate electrostatic discharge.

Step 3: Lift off outer carton top.

Step 4: Lift off upper foam cushion. This will
expose the drives in their conductive/an-
tistatic bag.

Step 5: Lift each drive out of the lower foam cushion
individually and remove the conductive/antis-
tatic bag.

Step 6: Return conductive/antistatic bag to lower
foam cushion for reuse.

Step 7: Place drive on a protective foam pad and
inspect the drive for shipping damage, loose
screws or components and correct if possible.
If damage is evident without noticeable
damage to the shipping carton, notify
MiniScribe immediately for drive disposition.

Step 8: Once all the drives have been removed from
the shipping carton and the conductive/antis-
tatic bag has been returned to the lower foam
cushion, reassemble the carton and store for
reuse.


5.6 REPACKING

Should the MiniScribe drive require shipment, repack the drive
using the antistatic bag supplied and the other MiniScribe
packing materials and following the steps in Paragraph 5.5.2,
5.5.1 or Paragraph 5.5.3 in reverse order. The MiniScribe
series contain shipping zones for protection of the data areas
from periods of mishandling. Prior to power down for ship-
ment, the host controller should access this zone; if it is
NOT the product warranty is void.


NOTICE

The MiniScribe drive product warranty is
void if the drive is returned to MiniScribe
in other than the standard MiniScribe ship-
ping carton packed in accordance with the
enclosed procedure.

It should also be noted that the MiniScribe
drive product warranty is void if the
multipack shipping container is not shipped
on a pallet.


5.7 RECOMMENDED MOUNTING CONFIGURATION

The MiniScribe 3650 half height drive is designed to be used
in applications where the unit may experience shock and
vibrations at greater levels than larger and heavier disk drives.

Two features which allow greater shock tolerance are the use
of rugged media and shock mounts. To take full advantage of
the shock mounts, however, it is necessary to provide a 0.1
inch clearance on both the top and bottom of the drive. This
clearance allows for movement of the drive during accelera-
tion. This implies that if the drive is mounted by the bottom
mounting holes on a flat surface, stand-offs are needed under
the mounting holes. No special considerations are required
if the drive is mounted using the side mounts except for the
clearance on top and bottom. The drive may be mounted in any
attitude except upside down.

The drive is mounted using 6-32 UNC screws, 1/4 inch maximum
penetration. See Figure 5-5 for mounting dimensions. The
customer should allow adequate ventilation to the drive to
insure reliable drive operation over the operating temperature
range.


5.8 CABLING

Connect interface cables with connectors P1, P2, P3, and P4
to J1, J2, J3, and J4 respectively. Insure that connectors P1
and P2 have keys installed as indicated in Figure 4-1. If
multiple drives are to be interconnected, remove the ter-
minator packs in all but the last drive in the daisy chain.
See Figure 5-1 for the terminator pack location.


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