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EK-TLZ07-IN-A01

July 1994

16 pages

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Document:	DEC 4000 Model 6x0/7x0 AXP Series TLZ07 Tape Drive Installation
Order Number:	EK-TLZ07-IN
Revision:	A01
Pages:	16
Original Filename:

OCR Text

DEC 4000 Model 6x0/7x0 AXP Series
TLZ07 Tape Drive Installation
EK–TLZ07–IN. A01
July 1994

This document illustrates how to install the TLZ07 tape drive in a DEC 4000
Model 6x0 or Model 7x0 AXP series system.

TLZ07

TLZ07 Tape Drive
Overview

Description
Media type
Recording format
Cartridge type
Capacity
Form factor
Transfer rate (sustained)
Temperature
Relative humidity
Voltage
Current
Power

Digital audio tape (RDAT drive)
DAT
DDS/ DDS-2/ DC
4 mm cassette tape 60 m/90 m/120 m
Up to 8.0 GB
5 1/4 in half-height
400 KB/second (no compression)
10°C (50°F)–40°C (104°F) (operating)
20%–80% noncondensing (operating)
+5 VDC 5% and +12 VDC 5%
+5 V: 0.89 A and +12 V: 0.2 A
9W

Add-On Option Part Number

3 1/2-inch embedded tape drive
with bracket
3 1/2-inch embedded tape drive
without bracket
Tabletop drive

TLZ07–MX (first device in removable-media
slot)
TLZ07–MY (second device in removablemedia slot)
TLZ07–DA

Field Replacable Parts and Options

TLZ07 tape drive
Cassette tape1

Head cleaning cassette

TLZ07–BA
TLZ04–CA (60 m = 2.6 GB)
TLZ06–CA (90 m = 4.0 GB)
TLZ07–CA (120 m = 8.0 GB)
TLZ04–HA

1 Compressed mode data capacity

TLZ07

Documentation

TLZ07 Cassette Tape Drive and
Autoloader Owners Manual
DEC 4000 AXP
Owner’s Guide (VMS Ops)
DEC OSF/1 AXP
Factory Installed
Software User Guide

EK–TLZ07–OM
EK–KN430–OP
EK–SFFIS–UG

Figure 1 shows the indicators, jumpers, and connectors on the TLZ07 tape
drive. Table 1 shows the default switch settings, and Table 2 describes the
light indications.
Table 1 SCSI ID / Option Selection Switch
Switch

Default Setting

S1 - S3 SCSI ID
S4 Media Recognition
System (MRS)
S5 Parity
S6 Compression
S7
S8 Self-test

Off - See Note
On = Disabled
On = Enabled
On = Disabled
Off = Reserved for future use
On = Enabled
Note

In a DEC 4000 system, the SCSI ID select cable is used instead of
jumpers. The SCSI ID jumpers are logically ORed with the SCSI ID
select connector pins. Set switches 1 - 3 off because the logic recognizes
a SCSI ID bit set if either a switch is on or the bit is set by the cable.
Media Recognition System
The media recognition system (MRS) is a quality standard for tapes. Cassette
tapes that meet this standard are labeled MRS or Media Recognition
System, and contain identifying information at the beginning of the tape.

TLZ07

When the media recognition system is enabled on the TLZ07 cassette tape
drive (S4 off), the TLZ07 drive reads the header information on the cassette
tapes to determine if the tape meets the MRS standard. Although it can read
any 4 mm cassette tape, the drive will only write to tapes that meet the MRS
standard. If the cassette tape does not meet the MRS standard, you will see a
write-lock error message on the console terminal.
When the media recognition system is disabled (S4 on), the drive will write to
any MRS tape as well as tapes that do not meet the MRS standard.

TLZ07

Figure 1 TLZ07 Cassette Tape Drive Connectors and Indicators
Front

Tape
Activity
Light
Power
Connector

Write-Protect
Light

Term
Power

Tape
Unload
Button

Tape
Cassette
Slot

SCSI
Connector

SCSI
ID

Remote
ID Pins

Pin 1 Pin 1

Rear

O
F
F

Off

8
7
6
5
4
3

TLZ07 SCSI ID Switch Selection

SCSI ID

Off

Self-Test
Compression

Off

SCSI ID
Select
Cable

O
F
F

Off

SCSI ID

Off

Parity
Reserved

MRS

MLO-012717

TLZ07

Installation
Caution
Static electricity can damage integrated circuits. Use the antistatic
wrist strap and antistatic pad found in the static-protective kit (ON
29–26246–00) when you work with the internal parts of a computer
system.

Before you begin the installation procedure, remove the bus continuity card
from the option storage slot into which you intend to install the tape drive.
Figure 6 shows the location of the bus continuity cards.
To install a TLZ07-MX tape drive in your system, perform the following steps:
1. Slide the TLZ07-MX mounting bracket assembly into the option storage
slot and push until the connector on the SCSI paddle card on the drive
mounting bracket engages securely into the backplane. Secure the
assembly by tightening the two captive screws. Figure 2 shows the location
of one of the screws. The second screw is located on the bottom drive
mounting bracket. Do not over-tighten the screws; 9" lbs is sufficient to
secure the drive. It is normal for there to be a slight gap between the
bracket and chassis.
2. Attach the SCSI ID cable to the OCP connector on the bezel assembly
(Figure 2).
3. Insert the tabs on the bottom of the bezel into the slots on the storage slot
(Figure 2).
4. Push in the top of the bezel, and tighten the Phillips screw (Figure 2).
5. Install a SCSI ID plug to the front of the bezel, making sure that the SCSI
ID number is not used by another device. The bezel is marked to show the
corresponding SCSI ID plug for each slot.
To add a TLZ07-MY tape drive to your system, perform the following steps:
1. Remove the mounting assembly as follows:
•

Remove any SCSI ID plugs installed in the bezel.

•

Loosen the Phillips screw at the top of the bezel, pull out the top of the
bezel, and carefully lift the bezel up and out from the storage slot to
expose the SCSI ID cables.

TLZ07

•

Remove any SCSI ID cables from the OCP connector on the bezel
assembly.

•

Loosen the two captive screws that secure the mounting bracket to the
chassis.

•

Pull on the mounting assembly until it slides away from the chassis.

•

Place the mounting assembly on the antistatic pad.

2. Connect the SCSI ID cable to the back of the drive (Figure 1).
3. Slide the drive into the mounting assembly.
4. Attach the SCSI and power cables to the drive. Figure 1 shows the location
of the connectors.
5. Secure the drive into the mounting assembly with the four mounting
screws provided. Two screws attach to the top of the assembly, and two
screws attach to the bottom of the assembly (Figure 3 shows the top of the
assembly). Make sure that the top front screw goes through the grounding
strip shown in the figure.
Caution
Failure to connect the grounding strip could result in data errors.

6. Remove the blank panel from the bezel (Figure 4).
7. Remove the blank flat plug(s) from the bezel (Figure 5).
8. Return the OCP connector board to the bezel.
9. Install SCSI ID plugs on the front of the bezel. Each drive must have an
unique SCSI ID number. Make sure that the drive that was installed prior
to this add-on procedure retains the same SCSI ID number that was used
previously. The front of the bezel is marked to show the corresponding
SCSI ID plug for each slot.
10. Slide the mounting bracket assembly into the option storage slot and push
until the SCSI paddle card on the drive mounting bracket engages securely
into the backplane. Secure the drive by tightening the two captive screws.
Figure 2 shows the location of one of the screws. The second screw is
located on the bottom drive mounting bracket. Do not over-tighten the
screws; 9" lbs is sufficient to secure the drive. It is normal for there to be a
slight gap between the bracket and chassis.

TLZ07

11. Attach each SCSI ID cable into the appropriate connector on the OCP
connector board on the bezel (Figure 2). The top connector corresponds
with the left storage slot, and the bottom connector corresponds with the
right storage slot. The bezel is marked to show the corresponding SCSI ID
plug for each slot.
12. Insert the tabs on the bottom of the bezel into the slots on the storage slot
(Figure 2).
13. Push in the top of the bezel, and tighten the Phillips screw (Figure 2).

TLZ07

Figure 2 Installing a TLZ07-MX Tape Drive

Tighten
screw.

Insert
SCSI ID
connector.
8
7
6
5
4
3
F
F
O

2
1

Insert
bezel.

MLO-012702

Note
When a removable-media compartment is empty, blank bezels are
required to maintain maximum air flow.

TLZ07

Figure 3 Inserting Mounting Screws
Mounting Screws

Grounding Strip

MLO-012703

TLZ07

Figure 4 Removal of Blank Panel

Push Spring Tab

Remove Blank Panel

Blank Panel

MLO-010646

TLZ07

Figure 5 Removal of Blank Flat Plugs
Front

Rear

Unload

Operate
Lever

Tape in Use

Write
Protect

Push Back Two
Spring Tabs

Blank
Flat Plugs

Lift Out
Board

Remove Blank
Flat Plugs

Note: Re-install board and then insert standard ID plugs.
MLO-010648

TLZ07

Figure 6 Bus Continuity Card
Dual Half-Height
SCSI Drives
Continuity Card

Full-Height
SCSI Drives

J4
J2

J7
J5
J3

Dual Half-Height
SCSI Drives
Full-Height
SCSI Drives

Full-Height
SCSI Drives
MLO-009431

Note
When either the J6 or J7 backplane connector is not used, insert a bus
continuity card into those slots to maintain bus continuity. There are
two bus continuity cards already installed in the backplane.

TLZ07

Table 2 TLZ07 Light Summary
Write-Protect Light
(Amber)

Tape/Activity Light
(Green)

Off
Off

Off
On

Off

Blinks

Write-protect
status.

Blinks (25% on), then turns
on solid when load sequence
completes.
Blinks (25% on), then turns
off when unload sequence
completes.
Blinks for 1–2 seconds.

Indicates writeprotect status;
then turns off.
Blinks for 1–2
seconds.
Blinks 2 Hz for
more than 15
seconds.
Blinks 1 Hz.

Blinks 2 Hz for more than 15
seconds.
On

Condition

No tape loaded.
Tape loaded and writeenabled,
no SCSI activity.
Tape loaded and writeenabled, SCSI activity.
Tape loaded and writeprotected, no SCSI drive
activity.
Tape loaded and writeprotected, SCSI activity.
Load sequence.

Unload sequence.

Power-on/reset sequence;
POST.
Test failure, drive fault.

Tape drive head needs to
be cleaned. Use the head
cleaning cassette tape
(TLZ04–HA).

TLZ07

Figure 7 Inserting and Removing a TLZ07 Cassette

WriteProtected

WriteEnabled

Digital
Data
Storage

Insert
cassette.

Push
eject button.

Digital
Data
Storage

Remove
cassette.

MLO-008662